A stamping die for a stator housing of a new energy vehicle motor

Abstract

The present invention relates to the field of brushless motor processing technology, and in particular to a stamping die for a stator housing of a new energy vehicle motor, comprising a die main body consisting of an upper die plate, a lower die plate and a workbench, the workbench is further provided with a cooling mechanism, the cooling mechanism comprising a first cooling mechanism arranged on a guide column and a second cooling mechanism arranged beside the lower die plate; the first cooling mechanism comprises a rotating sleeve arranged on the guide column, the rotating sleeve is provided with a liquid spray head capable of spraying cooling liquid toward a cutting section of an iron core sheet shape, and a liquid supply component is installed in a rotating shaft; when one of the upper die plates is heated more seriously, the rotating shaft can be rotated so that the liquid spray head is aligned with the heated area, and the cooling liquid is sprayed to quickly cool down the temperature without manual liquid spraying, the cooling effect is better and more obvious, and it does not occupy more space, so that other mechanical structures can be arranged; the second cooling mechanism can be used in the area where the first cooling mechanism cannot spray, so as to cool the upper die plate or the lower die plate at multiple angles.

Description

Technical Field

[0001] The invention relates to the technical field of brushless motor processing, and in particular to a stamping die for a stator housing of a new energy vehicle motor. Background Art

[0002] In compressors for new energy vehicles, the application of three-phase embedded permanent magnet synchronous motors is becoming more and more widespread. In the prior art, conventional permanent magnet synchronous motors for compressors for new energy vehicles, such as 4, 6, and 8-pole rotors, have permanent magnets embedded in rotor magnet slots. This type of motor has a small number of magnets, and the area of ​​a single magnet perpendicular to the magnetization direction is relatively large, so it has poor anti-seismic ability in automotive applications. At the same time, the radial unilateral magnetic pull of the permanent magnet synchronous motor will amplify the impact of the rotational imbalance caused by the eccentric mechanism such as the eccentric sleeve and crankshaft on the rotating parts of the scroll compressor, causing the radial vibration of the motor rotor to intensify. In addition, the 3rd, 5th, and 7th harmonics of the motors under the conventional pole slot structures of 4, 6, and 8 poles of the three-phase embedded permanent magnet synchronous motor with concentrated windings for scroll compressors are relatively high, which is one of the main sources of electromagnetic noise in the scroll compressor motor.

[0003] The stator core is composed of 3 to 4 blocks of cores. The processing method is: first punch straight bar-shaped core sheets, then stack several bar-shaped core sheets into straight bar-shaped core sheets, then use a circular fixture to bend the straight bar-shaped core sheets into arc-shaped core sheets, and then connect the 3 to 4 arc-shaped core sheets end to end and shape them to obtain the stator core.

[0004] The Chinese invention with application number CN202311605625.6 discloses a stamping die for automobile motor rotors, which belongs to the field of mechanical processing technology. It solves the problem of poor conveying efficiency between the conveyor line and the mold body in the existing rotor stamping die. The motor rotor stamping die includes a mold body consisting of an upper mold plate, a lower mold plate and a workbench; the conveyor line is located on one side of the mold body and is used to convey the raw material plate into the mold body; the docking rod is set in two groups and is respectively set on both sides of the top of the lower mold plate; the support head is installed on the top of the docking rod and can be lifted and lowered and moved back and forth to drive the raw material plate from the conveyor line to the mold body; the molding cavity is set in two and arranged at intervals, and is axially extended from the lower mold plate toward the inside of the workbench to allow the rotor sheet to be placed in an orderly manner; the laser welding head is set in the workbench and performs laser welding on two adjacent rotor sheets stacked up and down.

[0005] During stamping and forming, existing stamping dies require multiple stamping uses for cutting knives, punching knives and other modules, which come into frictional contact with the stator housing during stamping. Frequent stamping will cause cutting knives, punching knives and other modules to heat up rapidly. When the temperature is high, it is easy to cause cutting knives, punching knives and other modules to wear faster or even break. The solution is usually to set a coolant outlet head with a fixed direction on the workbench to spray coolant at the corresponding position for cooling. However, since there are many stamping areas, the coolant cannot be sprayed in a changing direction, which has certain limitations. Summary of the invention

[0006] The purpose of the present invention is to provide a stamping die for a stator housing of a new energy vehicle motor in view of the deficiencies in the prior art.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A stamping die for a stator housing of a new energy vehicle motor comprises a die main body consisting of an upper die plate, a lower die plate and a workbench, the lower die plate is mounted on the workbench, a guide structure is arranged between the lower die plate and the upper die plate, the guide structure comprises a guide column mounted on the lower die plate, an upper die sleeve slidably matched with the guide column is mounted on the upper die plate, and a positioning assembly for positioning the stator housing is mounted on the lower die plate, characterized in that: a downwardly protruding core sheet profile cutting section and a punching section are arranged at the bottom of the upper die plate, the core sheet profile cutting section is composed of two core sheet profile cutting knives spaced apart and arranged in parallel; the core sheet profile cutting knives are divided into two sections, and the two sections are spaced apart; the punching section comprises a plurality of longitudinally arranged punching knives;

[0009] The lower template is equipped with a pair of mold lifting cylinders, the piston rods of which are connected to the upper template, and the upper template is driven by the mold lifting cylinders to move longitudinally along the guide column to approach or move away from the lower template;

[0010] The workbench is also provided with a cooling mechanism, which includes a first cooling mechanism arranged on the guide column and a second cooling mechanism arranged beside the lower template;

[0011] The first cooling mechanism includes a rotating sleeve arranged on the guide column, the guide column includes a top column, a middle column and a bottom column coaxially arranged from top to bottom, the outer diameters of the top column, the middle column and the bottom column are the same, wherein the middle column is equipped with a rotating shaft that can rotate, the rotating shaft can move up and down in the axial direction of the middle column, the rotating shaft is fixedly connected to the rotating sleeve, the top of the rotating shaft is rotatably connected to the top column, the rotating sleeve is equipped with a liquid spray head that can spray cooling liquid toward the iron chip outer shape cutting section, the rotating shaft is formed with a liquid cavity with a hollow structure, and a liquid supply component for passing liquid into the rotating sleeve is installed in the liquid cavity;

[0012] The second cooling mechanism includes a driving head capable of moving in the X, Y and Z axis directions, the driving head is equipped with a liquid storage tank, a liquid storage cup is arranged in the liquid storage tank, the liquid storage cup is formed with a transfer cavity for temporarily storing liquid, a through hole for discharge from the transfer cavity is arranged at the bottom of the liquid storage cup, a liquid spray seat connected with the through hole and the transfer cavity is installed at the bottom of the liquid storage cup, a bottom water receiving head is installed at the bottom of the liquid spray seat, a side water receiving head is installed on the side of the liquid spray seat, the side water receiving head and the bottom water receiving head are connected to each other, and a water adding component for passing liquid into the liquid storage cup and a drainage component for passing liquid from the liquid storage cup to the liquid spray seat are also arranged in the liquid storage tank.

[0013] The beneficial effects of the present invention are as follows: after multiple stampings, the iron chip shape cutting segment and the punching segment generate severe heat. After the upper template is raised along the guide column, until the iron chip shape cutting segment and the punching segment are flush with the spray head of the rotating sleeve, the spray head can spray coolant to cool the iron chip shape cutting segment and the punching segment, thereby reducing the probability of deformation and damage caused by heat, effectively protecting the iron chip shape cutting segment and the punching segment, and extending their practical life. When one of the places on the upper template generates severe heat, the rotating shaft can be rotated so that the spray head is aligned with the heated place, and coolant is sprayed to quickly cool down the temperature without manual spraying. The cooling effect is more obvious and it will not take up much space, so that other mechanical structures can be arranged.

[0014] The first cooling mechanism has certain limitations. The second cooling mechanism can be used in areas where the first cooling mechanism cannot spray. The driving head can move in the X, Y, and Z axis directions to pass the liquid in the liquid storage cup into the spray seat, and discharge the liquid through the bottom water head or the side water head to achieve multi-area and multi-angle cooling of the upper template or the lower template. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the stamping die.

[0016] Figure 2 It is a schematic diagram of the structure of the stamping die in the front view direction.

[0017] Figure 3 It is a schematic diagram of the structure when the upper mold plate and the lower mold plate of the stamping die are separated.

[0018] Figure 4 This is a cross-sectional view of the connection between the guide column and the lower template.

[0019] Figure 5 A schematic cross-sectional view of a guide column.

[0020] Figure 6 for Figure 5 A partial enlarged schematic diagram includes the connection structure between the rotating shaft and the middle column.

[0021] Figure 7It is a cross-sectional view of the connection between the middle column and the lower template, including the liquid supply component.

[0022] Figure 8 This is a cross-sectional view of the connection between the bottom column and the lower formwork, including a cross-sectional view of the rotation axis.

[0023] Fig. 9 It is a structural schematic diagram of the second cooling mechanism.

[0024] Figure 1 0 is a schematic structural diagram of the second cooling mechanism from another perspective.

[0025] Fig.11 Schematic diagram of the explosion of the liquid storage tank and the liquid storage cup.

[0026] Fig.12 A schematic diagram of the cross section of the liquid storage tank.

[0027] Fig.13 This is a schematic diagram of the structure of an external rotor motor.

[0028] Reference numerals include:

[0029] 1- Workbench,

[0030] 11-upper template, 12-lower template, 13-upper mold sleeve, 14-positioning assembly,

[0031] 15-Iron chip shape cutter, 16-Punching knife, 17-Mold lifting cylinder, 18-Connecting plate,

[0032] 2- The first cooling mechanism,

[0033] 20-guide column, 21-top column, 22-middle column, 23-bottom column, 24-top guide groove,

[0034] 25-a rolling bearing, 26-a ring groove, 27-a bottom ring groove, 28-a ball bearing,

[0035] 29-bottom ball, 291-guide sleeve, 292-drive compression spring,

[0036] 3-Liquid supply components,

[0037] 30-rotating sleeve, 31-rotating shaft, 32-liquid chamber, 33-internal water pump, 34-first top liquid outlet, 35-second top liquid outlet, 36-liquid spray head, 37-air pipe, 38-air extraction hole, 39-heat dissipation pipe,

[0038] 391-heat dissipation holes,

[0039] 4- Rotation hole,

[0040] 41-annular groove, 42-rubber sealing sheet, 43-first bottom liquid supply hole, 44-second bottom liquid through hole, 45-a bottom liquid supply pipe, 46-bottom liquid supply pipe, 47-guide head, 48-third bottom liquid through hole,

[0041] 49-External water pump,

[0042] 5-Bottom mounting hole,

[0043] 50- plane bearing, 51- bottom guide rod, 52- bottom guide hole, 53- bottom drive groove,

[0044] 54-bottom lifting cylinder, 55-driving motor seat, 56-bottom driving motor, 57-cross connecting block, 58-cross connecting groove, 59-bottom connecting shaft,

[0045] 6- Second cooling mechanism,

[0046] 60-connecting rod assembly, 61-driving head, 62-first driving frame, 63-second driving plate,

[0047] 64-servo motor, 65-first drive shaft, 66-first swing rod, 67-first connecting shaft,

[0048] 68-first rolling ball, 69-second swing rod,

[0049] 7-Vertical bracket,

[0050] 71-connecting sleeve, 72-rolling groove, 73-second connecting shaft, 74-second rolling ball,

[0051] 8-Liquid storage tank,

[0052] 81-liquid storage cup, 82-transfer chamber, 83-through hole, 84-sealing cover, 85-liquid inlet, 86-liquid inlet head, 87-plug hole, 88-first plug, 89-sealing rubber plug, 891-lifting head, 892-pneumatic port,

[0053] 893-trachea, 894-pneumatic head,

[0054] 9-Spray seat,

[0055] 90- plugging head, 91- side water connection head, 92- bottom water connection head, 93- external rotor motor,

[0056] 94-stator part, 95-rotor part, 96-stator housing, 97-rotor shaft,

[0057] 98-winding core module, 99-magnetic steel group, 100-motor heat dissipation hole. DETAILED DESCRIPTION

[0058] The present invention is described in detail below with reference to the accompanying drawings.

[0059] like Figure 1-13 As shown, a stamping die for a stator housing of a new energy vehicle motor includes a die body consisting of an upper die plate 11, a lower die plate 12 and a workbench 1, a plurality of parallel and spaced connecting plates 18 are installed at the bottom of the lower die plate 12, the lower die plate 12 is installed on the workbench 1 through the connecting plates 18, a guide structure is provided between the lower die plate 12 and the upper die plate 11, the guide structure includes a guide column 20 installed on the lower die plate 12, the upper die plate 11 is installed with an upper die sleeve 13 that slides with the guide column 20, and the lower die plate 12 is installed with a positioning component 14 for positioning the stator housing 96, the The bottom of the upper template 11 is provided with a downwardly protruding iron core sheet shape cutter 15 section and a punching section, the iron core sheet shape cutter 15 section is composed of two iron core sheet shape cutters 15 spaced apart and arranged in parallel; the iron core sheet shape cutter 15 is divided into two sections, and the two sections are spaced apart; the punching section includes a plurality of longitudinally arranged punching knives 16; the raw material of the stator housing 96 is placed into the lower template 12, and fixedly installed by the positioning component 14, the positioning component is a card block, and the positioning is achieved by the cooperation of the card block and the interlocking groove and the cooperation of the positioning pin and the housing hole to prevent the displacement of the stator housing 96 raw material that needs to be stamped.

[0060] The lower template 12 is equipped with a pair of mold lifting cylinders 17, the piston rod of the mold lifting cylinder 17 is connected to the upper template 11, and the mold lifting cylinder 17 drives the upper template 11 to move longitudinally along the guide column 20 to approach or move away from the lower template 12; during stamping, the two mold lifting cylinders 17 move synchronously, driving the upper template 11 to move longitudinally along the guide column 20 to approach the lower template 12, and the iron core sheet shape cutting knife 15 section and the punching section of the upper template 11 punch and cut the appearance of the stator shell 96 to achieve stamping and shaping of the rotor shell.

[0061] The workbench 1 is further provided with a cooling mechanism, which includes a first cooling mechanism 2 arranged on the guide column 20 and a second cooling mechanism 6 arranged beside the lower template 12 .

[0062] The first cooling mechanism 2 includes a rotating sleeve 30 arranged on the guide column 20, and the guide column 20 includes a top column 21, a middle column 22 and a bottom column 23 which are coaxially arranged from top to bottom. The outer diameters of the top column 21, the middle column 22 and the bottom column 23 are the same, and the upper mold sleeve 13 of the upper mold plate 11 can pass through in sequence to ensure that the upper mold plate 11 moves axially on the guide column 20, wherein the middle column 22 is equipped with a rotatable rotating shaft 31, and the rotating shaft 31 can move up and down in the axial movement of the middle column 22, the rotating shaft 31 is fixedly connected to the rotating sleeve 30, and the top of the rotating shaft 31 is rotatably connected to the top column 21, and the rotating sleeve 30 is equipped with a liquid spray head 36 capable of spraying cooling liquid toward the iron core chip shape cutter 15, and the rotating shaft 31 is formed with a liquid cavity 32 with a hollow structure, and a liquid supply component 3 for passing liquid into the rotating sleeve 30 is installed in the liquid cavity 32;

[0063] After multiple stampings, the iron chip shape cutter 15 section and the punching section heat up more seriously. After the upper template 11 is raised along the guide column 20, until the iron chip shape cutter 15 section and the punching section are flush with the spray head 36 of the rotating sleeve 30, the spray head 36 can spray coolant to spray and cool the iron chip shape cutter 15 section and the punching section, thereby reducing the probability of deformation and damage caused by heat, effectively protecting the iron chip shape cutter 15 section and the punching section, and extending their practical life; when one of the upper templates 11 heats up more seriously, the rotating shaft 31 can be rotated so that the spray head 36 is aligned with the heated area, spraying coolant to quickly cool down without manual spraying, and the cooling effect is more obvious, and it will not take up more space, which can be used for the arrangement of other mechanical structures.

[0064] Specifically, a top guide groove 24 is formed in the top column 21, and a top rolling bearing 25 is installed in the top guide groove 24. The top of the rotating shaft 31 is connected to the top rolling bearing 25. When the rotating shaft 31 rotates, the top of the rotating shaft 31 rotates with the top rolling shaft. The top column 21 will not rotate and always remains coaxially aligned with the middle column 22, ensuring that the upper mold sleeve 13 of the upper mold plate 11 can slide with the top column 21 and the middle column 22.

[0065] Preferably, the top and bottom ends of the top column 21 and the middle column 22 are formed with chamfered structures to further improve the stability of sliding cooperation with the upper mold sleeve 13. The chamfered structure ensures that when the upper mold sleeve 13 slides with the top column 21, the middle column 22 and the bottom column 23 in turn, there will be no collision, and the sliding stability is further improved.

[0066] Furthermore, a top annular groove 26 is formed on the bottom end face of the top column 21, and a guide sleeve 291 is coaxially nested on the top of the middle column 22. A driving compression spring 292 is connected between the middle column 22 and the guide sleeve 291 to drive the guide sleeve 291 to fit with the rotating sleeve 30; a bottom annular groove 27 coaxially aligned with the top annular groove 26 is formed on the top of the guide sleeve 291, and a top ball 28 rolling with the top annular groove 26 is installed on the top surface of the rotating sleeve 30, and a bottom end surface of the rotating sleeve 30 is installed with a ball bearing 28 rolling with the bottom annular groove 27. When the rotating shaft 31 rotates in the middle column 22, the rotating sleeve 30 rotates synchronously accordingly. At this time, the liquid spray head 36 of the rotating sleeve 30 can rotate an angle to spray coolant in different directions. When the rotating sleeve 30 rotates, the top ball 28 at the top of the guide sleeve 291 can roll with the top annular groove 26 at the bottom end surface of the top column 21, and the bottom ball 29 at the bottom of the guide sleeve 291 can roll with the bottom annular groove 27 at the top of the guide sleeve 291, which can further improve the rotation stability of the rotating sleeve 30 and prevent displacement. Under the elastic drive of the driving compression spring 292, the guide sleeve 291 always keeps in contact with the bottom of the rotating sleeve 30. When the rotating shaft 31 rotates, the bottom ball 29 at the bottom of the guide sleeve 291 can roll with the bottom annular groove 27 at the top of the guide sleeve 291, which further improves the rotation stability of the rotating sleeve 30.

[0067] The liquid supply assembly 3 includes an internal water pump 33. It should be noted that the overall diameter of the guide column 20 is 10 cm, the diameter of the liquid cavity 32 is 5 cm, and the diameter of the rotating shaft 31 is 7 cm. The formed liquid cavity 32 can be used to install a micro water pump, which is an existing purchased WPY350 micro water pump. The widest part of the water pump is only 3.3 cm, which can meet the use of the present invention.

[0068] A top liquid supply pipe 45 is installed at the water outlet of the internal water pump 33, and a bottom liquid supply pipe 46 is installed at the water inlet of the internal water pump 33; the rotating shaft 31 is radially formed with a first top liquid port 34 connected to the top liquid supply pipe 45, and the rotating sleeve 30 is radially formed with a second top liquid port 35 sealed and connected to the first top liquid port 34, the second top liquid port 35 is connected to the spray head 36, and the spray head 36 is installed in the second top liquid port 35; the internal water pump 33 passes the coolant into the first top liquid port 34 through the top liquid supply pipe 45, and then passes it into the second liquid port of the rotating sleeve 30, and the coolant is sprayed outward through the spray head 36 of the second liquid port, so that the coolant has impact force when it is sprayed, which can increase the range, and the coolant can be sprayed to a relatively large area for heat dissipation.

[0069] The air inlet of the internal water pump 33 is also connected to an air pipe 37, and the rotating shaft 31 is radially formed with a plurality of exhaust holes 38 connected to the air pipe 37. The external air can be drawn into the internal water pump 33 through the exhaust holes 38, thereby providing auxiliary power for air intake and achieving water pumping; a heat dissipation pipe 39 is also installed in the heating area of ​​the internal water pump 33, and the rotating shaft 31 is radially formed with heat dissipation holes 391 connected to the heat dissipation pipe 39. The heat dissipation pipe 39 is made of copper material, which can further improve the heat dissipation effect and prevent the internal water pump 33 motor from burning out.

[0070] The middle column 22 is formed with a rotating hole 4 for the rotating shaft 31 to rotate, and the bottom end of the rotating shaft 31 is formed with an inwardly concave annular groove 41, and the concave annular groove 41 is used to transfer and store the coolant entering the internal pump body. The rotating shaft 31 is also formed with a rubber sealing sheet 42 located at the top and bottom of the concave annular groove 41 and sealingly fitted with the hole wall of the rotating hole 4; the rotating shaft 31 is also radially formed with a first bottom liquid supply hole 43 connected to the concave annular groove 41, and the inner end of the first bottom liquid supply hole 43 is connected to the bottom liquid supply pipe 46; the middle column 22 is radially formed with a second bottom liquid hole 44, and the inner end of the second bottom liquid hole 44 is connected to the rotating hole 4; the coolant that needs to enter the internal water pump 33 is passed into the concave annular groove 41 of the rotating shaft 31 through the second bottom liquid hole 44 radially formed by the middle column 22, and then enters the bottom liquid supply pipe 46 through the first bottom liquid supply hole 43 radially formed by the rotating shaft 31, thereby entering the internal water pump 33 for pumping water. Since the top and bottom of the concave annular groove 41 are respectively formed with rubber sealing sheets 42 that seal against the wall of the rotating hole 4, the coolant in the concave annular groove 41 will not leak out and will not enter the rotating hole 4 of the middle column 22, thereby ensuring the sealing effect.

[0071] When the rotating shaft 31 rotates in the rotating hole 4 of the middle column 22, even if the rubber sealing sheet 42 is frictionally matched with the hole wall of the rotating hole 4, since the rotating shaft 31 needs to rotate at a small angle, it will not have a great impact on the sealing of the water storage in the concave annular groove 41, and its sealing effect can still be maintained. In addition, when the rotating shaft 31 is raised and lowered in the rotating hole 4 of the middle column 22, since the number of times it needs to be raised and lowered is small, the number of times the rubber sealing sheet 42 is dynamically frictionally matched with the hole wall of the rotating hole 4 is also small, so the rubber sealing sheet 42 and the hole wall of the rotating hole 4 can maintain sealing, and the coolant in the concave annular groove 41 can be prevented from leaking into the rotating hole 4, and its service life can be extended.

[0072] When the height of the rotating sleeve 30 needs to be adjusted, the rotating shaft 31 needs to be driven to move axially in the rotating hole 4, in order to ensure that the inner end of the second bottom liquid hole 44 is always connected with the concave annular groove 41 of the rotating shaft 31. A guide head 47 that penetrates into the concave annular groove 41 is installed at the inner end of the second bottom liquid hole 44. When the rotating shaft 31 moves longitudinally, the guide head 47 can stop and cooperate with the rubber sealing sheet 42 at the top of the concave annular groove 41 and the rubber sealing sheet 42 at the bottom; the concave annular groove 41 is formed along the axial direction of the rotating shaft and has a certain length; when the rotating shaft 31 rises to the point where the guide head 47 stops and cooperates with the sealing sheet, the rotating shaft 31 cannot continue to rise; thus, the guide head 47 always penetrates into the concave annular groove 41, ensuring that the coolant always enters the concave annular groove 41.

[0073] The lower template 12 is provided with a bottom mounting hole 5 for mounting the middle column 22 and the bottom column 23, and the bottom mounting hole 5 is radially provided with a third bottom liquid hole 48 extending to the lower template 12; an external water pump 49 is installed at the outer end of the third bottom liquid hole 48, and the water outlet of the external water pump 49 is connected to the third bottom liquid hole; the external water pump 49 pumps the coolant into the third bottom liquid hole 48, and enters the second bottom liquid hole 44 of the middle column 22 through the third bottom liquid hole 48. When the rotating sleeve 30 rotates, the middle column 22 does not need to rotate; the external water pump 49 also does not need to rotate, and the coolant can still smoothly pass into the concave annular groove 41 of the rotating shaft 31, and then enter the liquid supply component 3 for spray cooling.

[0074] A bottom guide rod 51 is installed at the bottom of the middle column 22, and a bottom guide hole 52 is formed axially on the bottom column 23 for inserting the bottom guide rod 51. The bottom column 23 and the bottom guide hole 52 are fixedly connected, and a bottom driving groove 53 coaxially aligned with the rotating hole 4 is formed on the bottom column 23. The bottom driving groove 53 is installed with a bottom driving member for driving the rotating shaft 31 to rotate and lift. The bottom driving member includes a bottom lifting cylinder 54 installed on the bottom driving groove 53, and a driving motor seat 55 is installed on the driving end of the bottom lifting cylinder 54. A bottom driving motor 56 is installed in the driving motor seat 55, and the driving end of the bottom driving motor 56 is movably connected to the bottom of the rotating shaft 31. The bottom lifting cylinder 54 is fixedly installed on the bottom driving groove 53, and its driving end can drive the driving motor seat 55 to move axially in the bottom driving groove 53, thereby driving the rotating shaft 31 to move axially, realizing the lifting and lowering movement of the rotating sleeve 30, and spraying coolant to areas at different heights.

[0075] Preferably, a cross connection block 57 is installed at the driving end of the bottom driving motor 56, a bottom driving sleeve is installed at the bottom of the rotating shaft 31, and a cross connection groove 58 that cooperates with the cross connection block 57 is formed along the axial direction of the bottom driving sleeve; a bottom connecting shaft 59 is installed at the bottom of the bottom driving sleeve, and a plane bearing 50 is installed at the driving motor seat 55, and the top of the plane bearing 50 is connected to the bottom connecting shaft 59. The rotating shaft 31 is supported by the driving motor seat 55, and the motor shaft of the bottom driving motor 56 does not directly support the rotating shaft 31, which can reduce the load of the bottom driving motor 56, and there is no need to support the rotating shaft 31, and the stability of rotation is further improved. When the bottom driving motor 56 drives the top driving sleeve to rotate, the rotating shaft 31 rotates accordingly, and the plane bearing 50 installed at the top of the driving motor seat 55 rotates accordingly. The rotating shaft 31 is supported by the bottom connecting shaft 59, and the driving motor seat 55 does not move, and the rotating sleeve 30 rotates accordingly.

[0076] Preferably, the number of the guide columns 20 is four, wherein more than two guide columns 20 are installed with the first cooling mechanism 2, and the plurality of first cooling mechanisms 2 can spray coolant to a plurality of stamping areas as required.

[0077] The second cooling mechanism 6 includes a driving head 61 that can move in the X, Y, and Z axis directions. The second cooling mechanism 6 also includes a longitudinal bracket 7 installed on the workbench 1, and the longitudinal bracket 7 is equipped with a movable driving member for the driving head 61 to move in the X, Y, and Z axis directions.

[0078] The mobile driving component includes a first driving frame 62 installed on the second driving block and a second driving plate 63 located next to the first driving frame 62. The driving head 61 is installed on the second driving plate 63. The longitudinal bracket 7 is provided with a lifting cylinder. The driving end of the lifting cylinder is connected to the first driving frame 62, thereby driving the first driving frame 62 to move longitudinally.

[0079] The first driving frame 62 is equipped with four connecting rod assemblies 60, and the angle between two adjacent connecting rod assemblies 60 is 90 degrees; multiple connecting rod assemblies 60 can swing around the rotation point of the first driving frame 62 at the same time. The bottom end of the connecting rod assembly 60 is connected to the second driving plate 63, and the connecting rod assembly 60 includes a first swing rod 66 and a second swing rod 69. The first driving frame 62 is equipped with a first driving shaft 65 for fixing and nesting one end of the first swing rod 66, and the other end of the first swing rod 66 is equipped with a first connecting shaft 67, and the first two ends of the first connecting shaft 67 are equipped with first rolling balls 68, and the second driving plate 63 is equipped with a second connecting shaft 73, and the second two ends of the second connecting shaft 73 are equipped with second rolling balls 74, and the two ends of the second swing rod 69 are respectively formed with connecting sleeves 71, and the connecting sleeve 71 is formed with the first rolling The rolling groove 72 is semi-enclosed by the ball 68 or the second rolling ball 74, and the connecting sleeve 71 can roll with the first rolling ball 68 and the second rolling ball 74 through the rolling groove 72. The opening diameter of the rolling groove 72 is smaller than the diameter of the first rolling ball 68 and the second rolling ball 74. Therefore, the first rolling ball 68 and the second rolling ball 74 will not detach from the rolling groove 72. The second swing rod 69 can swing around the first rolling ball 68 at multiple angles. The connecting rod assembly 60 also includes a servo motor 64 installed on the first driving frame 62, and the driving end of the servo motor 64 is installed with the first driving shaft 65.

[0080] The driving end of one or more servo motors 64 can drive the first drive shaft 65 to rotate, and the first swing rod 66 with one end embedded in the first drive shaft 65 rotates synchronously with the first drive shaft 65, so that the first swing rod 66 swings accordingly, and the angle between the first swing rod 66 and the second swing rod 69 changes, so that the distance between the second drive plate 63 and the first drive frame 62 can change, so that the second drive plate 63 can move in the X-axis direction. The four servo motors 64 can have different speeds and drive the corresponding first drive shaft 65 to rotate at different angles according to the direction in which the second drive plate 63 needs to move. Since the connecting sleeves 71 at both ends of the second swing rod 69 can roll with the first rolling ball 68 and the second rolling ball 74 through the rolling groove 72, the second swing rod 69 can swing around the first rolling ball 68 and the second rolling ball 74 at multiple angles; the angles of each group of the first swing rod 66 and the second swing rod 69 can be different, so the second drive plate 63 can move in the Z and Y axes, and can also be tilted accordingly, so as to achieve multi-angle movement, so that the angle of the coolant injection can be increased.

[0081] The driving head 61 is equipped with a liquid storage tank 8, in which a liquid storage cup 81 is arranged. The liquid storage cup 81 is formed with a transfer chamber 82 for temporarily storing liquid. A through hole 83 for discharging from the transfer chamber 82 is arranged at the bottom of the liquid storage cup 81. A liquid spray seat 9 connected with the through hole 83 and the transfer chamber 82 is installed at the bottom of the liquid storage cup 81. A bottom water receiving head 92 is installed at the bottom of the liquid spray seat 9, and a side water receiving head 91 is installed on the side of the liquid spray seat 9. The side water receiving head 91 and the bottom water receiving head 92 are connected to each other. A water adding component for passing liquid into the liquid storage cup 81 and a drainage component for passing liquid from the liquid storage cup 81 to the liquid spray seat 9 are also arranged in the liquid storage tank 8. The outer ends of the bottom water connecting head 92 and the side water connecting head 91 are respectively detachably installed with sealing heads 90, and the sealing heads 90 are installed in the form of threaded knobs. When one of the bottom water connecting head 92 and the side water connecting head 91 is selected for use, the other is blocked by the sealing head 90 through the knob to block the hole, thereby preventing the coolant from passing through the two holes at the same time and causing leakage.

[0082] The first cooling mechanism 2 has certain limitations. The second cooling mechanism 6 can be used in areas where the first cooling mechanism 2 cannot spray. The driving head 61 can move in the X, Y, and Z axis directions to pass the liquid in the liquid storage cup 81 into the liquid spray seat 9, and discharge the liquid through the bottom water head 92 or the side water head 91, thereby realizing multi-area and multi-angle cooling of the upper template 11 or the lower template 12.

[0083] The liquid storage cup 81 is installed with a sealing cover 84, and the sealing cover 84 is formed with a liquid inlet 85. The liquid inlet 85 is installed with a liquid inlet head 86. The coolant to be discharged is passed into the liquid storage cup 81 through the liquid inlet head 86 for temporary storage. The plug hole 87 is installed with a first plug 88 for controlling the liquid to enter and exit from the through hole 83. The first plug 88 can be close to or away from the through hole 83. A sealing plug 89 with a conical structure is installed at the bottom of the first plug 88. The outer diameter of the sealing plug 89 is larger than the inner diameter of the through hole 83. When the first plug 88 contacts the through hole 83, the soft contact of the sealing plug 89 can block the through hole to prevent the liquid from entering the spray seat 9; when the first plug 88 is away from the through hole 83, the coolant located in the liquid storage cup 81 can enter the through hole 83, and then enter the spray seat 9, and the coolant is sprayed to the designated area that needs heat dissipation through the side water head 91 or the bottom water head 92 of the spray seat 9.

[0084] The sealing cover 84 is also formed with a plug hole 87 for guiding the top of the first plug 88 to move. The sealing cover 84 is equipped with a lifting head 891 that can move along the length direction of the liquid storage cup 81. The lifting head 891 is connected to the top of the first plug 88. The lifting head 891 is driven by the cylinder to move the first plug 88 closer to or away from the through hole 83. The lifting head 891 can be driven by a telescopic cylinder, and the arrangement direction of the telescopic cylinder is the same as the moving direction of the first plug 88, so that the first plug 88 can be stably driven to move closer to or away from the through hole 83 to control the discharge of the coolant. In addition, in order to increase the impact force of the coolant spraying out, the sealing cover 84 is also formed with a pneumatic port 892, and the pneumatic port 892 is installed with a pneumatic head 894. The outer end of the pneumatic head 894 is connected to an air pipe 893. The air pressure of the air pipe 893 can discharge the liquid in the transfer cavity 82 outward along the through hole 83 through the pneumatic head 894. Under the drive of the pneumatic system, when the coolant is discharged through the through hole 83, the side water head 91 or the bottom water head 92, the impact force of the coolant can be increased, and the range of the spray can be increased, thereby achieving a multi-zone cooling effect.

[0085] The outer rotor motor 93 includes a stator component 94 and a rotor component 95. The stator component 94 includes a stator housing 96. The rotor component 95 includes a rotor shaft 97 rotatably mounted on the stator housing 96. The rotor shaft 97 is sleeved with a winding core module 98. The stator housing 96 is installed with a plurality of magnetic steel groups 99. When the power is turned on, the rotor shaft 97 cooperates with the winding core module 98 and the magnetic steel group 99 of the stator housing 96 to rotate and rotate in the stator housing 96 to achieve power output. The stamping die of the present invention is used to stamp the stator housing 96, and a plurality of motor heat dissipation holes 100 can be stamped out and the edges can be cut, which can ensure the processing quality. The plurality of housing pieces after stamping are formed by welding and bending to form a cylindrical stator housing 96, thereby improving the rotation stability of the outer rotor motor 93.

[0086] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0087] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A stamping die for a stator housing of a new energy vehicle motor, comprising a die body consisting of an upper die plate, a lower die plate and a workbench, wherein the lower die plate is mounted on the workbench, a guide structure is arranged between the lower die plate and the upper die plate, the guide structure comprises a guide column mounted on the lower die plate, an upper die sleeve slidably matched with the guide column is mounted on the upper die plate, and a positioning assembly for positioning the stator housing is mounted on the lower die plate, characterized in that: The bottom of the upper template is provided with a downwardly protruding core sheet shape cutting section and a punching section, the core sheet shape cutting section is composed of two core sheet shape cutting knives arranged at intervals and in parallel; the core sheet shape cutting knives are divided into two sections, and the two sections are arranged at intervals; the punching section includes a plurality of punching knives arranged longitudinally; The lower template is equipped with a pair of mold lifting cylinders, the piston rods of which are connected to the upper template, and the upper template is driven by the mold lifting cylinders to move longitudinally along the guide column to approach or move away from the lower template; The workbench is also provided with a cooling mechanism, which includes a first cooling mechanism arranged on the guide column and a second cooling mechanism arranged beside the lower template; The first cooling mechanism includes a rotating sleeve arranged on the guide column, the guide column includes a top column, a middle column and a bottom column which are coaxially arranged in sequence from top to bottom, the top column, the middle column and the bottom column have the same outer diameters, wherein the middle column is provided with a rotating shaft which can rotate, the rotating shaft can move axially in the middle column to perform lifting and lowering motion, a bottom guide rod is provided at the bottom of the middle column, a bottom guide hole for inserting the bottom guide rod is formed axially on the bottom column, a bottom driving groove coaxially aligned with the rotating hole is formed on the bottom driving groove, a bottom driving member for driving the rotating shaft to rotate and lift is provided on the bottom driving groove, the bottom driving member includes a bottom lifting cylinder installed in the bottom driving groove, a driving motor seat is provided at the driving end of the bottom lifting cylinder, a bottom driving motor is provided in the driving motor seat, and the driving end of the bottom driving motor is movably connected to the bottom of the rotating shaft; The rotating shaft is fixedly connected to the rotating sleeve, the top of the rotating shaft is rotatably connected to the top column, the rotating sleeve is equipped with a liquid spray head capable of spraying cooling liquid toward the cutting section of the iron chip shape, the rotating shaft is formed with a hollow liquid cavity, and a liquid supply component for passing liquid into the rotating sleeve is installed in the liquid cavity; The second cooling mechanism includes a driving head capable of moving in the X, Y and Z axis directions, the driving head is equipped with a liquid storage tank, a liquid storage cup is arranged in the liquid storage tank, the liquid storage cup is formed with a transfer cavity for temporarily storing liquid, a through hole for discharge from the transfer cavity is arranged at the bottom of the liquid storage cup, a liquid spray seat connected with the through hole and the transfer cavity is installed at the bottom of the liquid storage cup, a bottom water receiving head is installed at the bottom of the liquid spray seat, a side water receiving head is installed on the side of the liquid spray seat, the side water receiving head and the bottom water receiving head are connected to each other, and a water adding component for passing liquid into the liquid storage cup and a drainage component for passing liquid from the liquid storage cup to the liquid spray seat are also arranged in the liquid storage tank.

2. The stamping die for the stator housing of a new energy vehicle motor according to claim 1, characterized in that: A top guide groove is formed in the top column, a top rolling bearing is installed in the top guide groove, the top of the rotating shaft is connected to the top rolling bearing, a top annular groove is formed on the bottom end face of the top column, a guide sleeve is coaxially nested on the top of the middle column, a driving compression spring is connected between the middle column and the guide sleeve to drive the guide sleeve and the rotating sleeve to fit together; a bottom annular groove is formed on the top of the guide sleeve and is coaxially aligned with the top annular groove, a top ball rolling in cooperation with the top annular groove is installed on the top surface of the rotating sleeve, and a bottom ball rolling in cooperation with the bottom annular groove is installed on the bottom end face of the rotating sleeve.

3. The stamping die for the stator housing of a new energy vehicle motor according to claim 2, characterized in that: The liquid supply component includes an internal water pump, a top liquid supply pipe is installed at the water outlet of the internal water pump, and a bottom liquid supply pipe is installed at the water inlet of the internal water pump; a first top liquid port connected to the top liquid supply pipe is radially formed on the rotating shaft, a second top liquid port sealed and connected to the first top liquid port is radially formed on the rotating sleeve, and the second top liquid port is connected to the liquid spray head; the air inlet of the internal water pump is also connected to the exhaust pipe, and the rotating shaft is radially formed with a plurality of exhaust holes connected to the exhaust pipe.

4. The stamping die for the stator housing of a new energy vehicle motor according to claim 3, characterized in that: The middle column is formed with a rotating hole for the rotating shaft to rotate, and the bottom end of the rotating shaft is formed with an inwardly concave annular groove, and the annular groove is used to store the coolant entering the internal pump body. The rotating shaft is also formed with a rubber sealing sheet located at the top and bottom of the concave annular groove and sealingly fitted with the wall of the rotating hole; the rotating shaft is also radially formed with a first bottom liquid supply hole connected with the concave annular groove, and the inner end of the first bottom liquid supply hole is connected to the bottom liquid supply pipe; the middle column is radially formed with a second bottom liquid hole, and the inner end of the second bottom liquid hole is connected with the rotating hole.

5. The stamping die for the stator housing of a new energy vehicle motor according to claim 4, characterized in that: A guide head that probes into the concave annular groove is installed at the inner end of the second bottom liquid through hole. When the rotating shaft moves longitudinally, the guide head can cooperate with the rubber sealing sheet at the top of the concave annular groove and the rubber sealing sheet stopper at the bottom; the lower template is provided with a bottom mounting hole for installing the middle column and the bottom column, and the bottom mounting hole is radially provided with a third bottom liquid through hole extending to the lower template; an external water pump is installed at the outer end of the third bottom liquid through hole, and the water outlet of the external water pump is connected to the third bottom liquid through hole.

6. The stamping die for the stator housing of a new energy vehicle motor according to claim 5, characterized in that: A cross connection block is installed at the driving end of the bottom drive motor, a bottom drive sleeve is installed at the bottom of the rotating shaft, and the bottom drive sleeve is axially formed with a cross connection groove that cooperates with the cross connection block; a bottom connecting shaft is installed at the bottom of the bottom drive sleeve, and the bottom connecting shaft is connected to the drive motor seat; the number of guide columns is four, and more than two of them are installed with the first cooling mechanism.

7. A stamping die for a stator housing of a new energy vehicle motor according to claim 1 or 6, characterized in that: The second cooling mechanism also includes a longitudinal bracket installed on the workbench, the longitudinal bracket is equipped with a mobile driving member for the driving head to move in the X, Y, and Z axis directions, the mobile driving member includes a first driving frame and a second driving plate located next to the first driving frame, the first driving frame is equipped with four connecting rod assemblies, and the angle between two adjacent connecting rod assemblies is 90°; the bottom end of the connecting rod assembly is connected to the second driving plate, the connecting rod assembly includes a first swing rod and a second swing rod, the first driving frame is equipped with a first driving shaft for fixing and nesting one end of the first swing rod, the other end of the first swing rod is equipped with a first connecting shaft, the first connecting shaft is equipped with a first rolling ball at both ends, the second driving plate is equipped with a second connecting shaft, the second rolling ball is installed at both ends of the second connecting shaft, and the second swing rod is respectively formed with a connecting sleeve at both ends, and the connecting sleeve is formed with a rolling groove that semi-encloses the first rolling ball or the second rolling ball, the connecting sleeve can roll with the first rolling ball and the second rolling ball through the rolling groove, and the second swing rod can swing around the first rolling ball at multiple angles, and the connecting rod assembly also includes a servo motor installed on the first driving frame, and the driving end of the servo motor is equipped with the first driving shaft.

8. The stamping die for the stator housing of a new energy vehicle motor according to claim 7, characterized in that: The liquid storage cup is equipped with a sealing cover, which is formed with a liquid inlet, and the liquid inlet is equipped with a liquid inlet head. The plug hole is equipped with a first plug for controlling the liquid to enter and exit from the through hole, and the first plug can be close to or away from the through hole. A sealing rubber plug with a conical structure is installed at the bottom of the first plug, and the outer diameter of the sealing rubber plug is larger than the inner diameter of the through hole. The sealing cover is also formed with a plug hole for guiding the top of the first plug to move, and the sealing cover is equipped with a lifting head that can move along the length direction of the liquid storage cup, and the lifting head is connected to the top of the first plug; the sealing cover is also formed with a pneumatic port, and the pneumatic port is equipped with an air pipe, which can discharge the liquid in the transfer cavity outward along the through hole.

9. The stamping die for the stator housing of a new energy vehicle motor according to claim 8, characterized in that: The automobile motor is an outer rotor motor, which includes a stator component and a rotor component. The stator component includes a stator housing, and the rotor component includes a rotor shaft rotatably mounted on the stator housing. The rotor shaft sleeve is provided with a winding core module, and the stator housing is installed with a plurality of groups of magnetic steel groups.

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