Stamping die for machining motor rotor

Abstract

The stamping die for motor rotor machining comprises a lower die body and an upper die body, the lower die body comprises a mounting base, a first stamping table is arranged on the mounting base, a die core mounting groove is formed in the axis of the first stamping table, and a die core limiting piece is arranged at the axis of the die core mounting groove; the die core mounting groove and the die core limiting piece are provided with a stamping die core in a matched mode, and the stamping die core can be separated from the interior of the die core mounting groove. During use, the die core mounting groove is formed in the first punching table, the die core limiting piece is arranged at the axis of the die core mounting groove, the die core mounting groove and the die core limiting piece are matched to limit the punching die core, meanwhile, the punching tool mounting groove is formed in the second punching table, and the punching die core and the punching tool are mounted in a separable mode; when the product style is replaced, only the stamping die core and the punching tool need to be replaced, the use cost is reduced, and after the stamping die core and the punching tool are replaced, the position of the die does not need to be adjusted again.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping die, in particular to a stamping die for motor rotor machining. BACKGROUND

[0002] A motor is a device that converts electrical energy into mechanical energy. It is to use the current coil (that is, the stator winding) to generate a rotating magnetic field and act on the rotor (such as a squirrel cage closed aluminum frame) to form a magnetic electric power rotating torque.

[0003] The motor rotor is mainly composed of an iron core and a wire winding, wherein the iron core is formed by stacking iron chips. When producing the motor rotor iron core, the iron chips are punched by a punching device to form a specific shape. Different types of motors have different rotor iron core styles and sizes, and different styles of rotor iron cores need to be replaced with corresponding types of iron cores.

[0004] The existing stamping die is generally integrally formed, and the stamping die needs to be replaced as a whole when producing different types of products, which causes the problem of high mold use cost.

[0005] Therefore, the present application provides a stamping die for motor rotor machining to reduce the use cost of the mold. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a stamping die for motor rotor machining to solve the problem of high mold replacement cost for producing different styles of rotor iron cores in the prior art.

[0007] To achieve the above-mentioned purposes and other related purposes, the present application provides a stamping die for motor rotor machining, which comprises a lower die and an upper die. The lower die comprises a mounting base, the upper surface of the mounting base is provided with a stamping table one, the axis of the stamping table one is provided with a mold core installation groove, the axis of the mold core installation groove is provided with a mold core limiting piece, the mold core installation groove and the mold core limiting piece are cooperatively provided with a stamping mold core, and the stamping mold core can be separated from the mold core installation groove; The upper die comprises a mounting upper seat, the lower surface of the mounting upper seat is provided with a stamping table two, the axis of the stamping table two is provided with a punch installation groove, the axis of the punch installation groove is provided with a punch cutter, and the punch cutter can be separated from the punch installation groove; The projection area of the mounting base and the mounting upper seat is equal, the projection area of the punching table one and the punching table two is equal, the outer surface of the punching die core is fitted with the inner wall of the die core mounting groove, the inner diameter of the punch mounting groove is equal to the outer diameter of the punching die core, the inner wall of the die core mounting groove is provided with a die core limiting boss, the inside of the punch mounting groove is provided with a punch limiting boss, the shape and position of the die core limiting boss and the punch limiting boss are matched.

[0008] Preferably, the punching die core includes a metal support column, the metal support column is provided with a punching groove at the center, the outer surface of the metal support column is fitted with the inner wall of the die core mounting groove; The outer surface of the metal support column is provided with a rotor outer contour groove matched with the position and shape of the die core limiting boss, and the rotor outer contour groove is inserted with the die core limiting boss.

[0009] Preferably, the top of the metal support column is provided with a positioning hole vertically penetrating the metal support column, the inside of the die core mounting groove is provided with a limiting rod matched with the position of the positioning hole, and the limiting rod is inserted into the inside of the positioning hole to limit the metal support column.

[0010] Preferably, the die cutting tool includes a punch mounting seat, the bottom of the punch mounting seat is provided with a die cutter, the outer surface section of the die cutter is matched with the inner wall section of the punching groove, and the die cutter can be inserted into the inside of the punching groove, and the outer surface of the punch mounting seat is provided with a punch limiting groove matched with the punch limiting boss; The top of the punch mounting seat is provided with a connecting fixing hole, and the punch mounting seat is fixed in the inside of the punch mounting groove through the connecting fixing hole by cooperating with the bolt.

[0011] Preferably, the edge of the upper surface of the punching table one is provided with a limiting baffle, and the top of the limiting baffle is higher than the top of the die core limiting member.

[0012] Preferably, the four corners of the upper surface of the punching table one are provided with an upper die guide, the four corners of the lower surface of the mounting upper seat are provided with a flange sleeve matched with the position of the upper die guide, and the upper die guide can be inserted into the inside of the flange sleeve; The periphery of the die core mounting groove on the upper surface of the punching table one is provided with a plurality of buffer members.

[0013] Preferably, all the upper die guides include a mounting flange plate, the center of the mounting flange plate is provided with a guide rod, the upper end of the guide rod is sleeved with a buffer sleeve, the buffer sleeve can slide up and down along the axial direction of the guide rod, the outer surface of the guide rod is sleeved with a buffer elastic member, and the buffer elastic member supports the buffer sleeve through elastic supporting force.

[0014] Preferably, the outer surface of the buffer sleeve is provided with a plurality of balls, the outer surface of the ball is attached to the inner wall of the flange sleeve, and the ball is rotatable; The buffer sleeve is internally provided with a cavity, the cavity is provided with adsorbing cotton, and the upper portion of the guide rod is provided with a sealing cover for closing the cavity. The cavity is filled with a lubricating substance, and the outer surface of the adsorbing cotton is attached to the outer surface of the ball.

[0015] Preferably, the mold core limiting piece comprises an axis positioning rod arranged at the axis of the mold core mounting groove, the outer surface of the axis positioning rod is sleeved with a mold core positioning plate, the mold core positioning plate is slidable on the outer surface of the axis positioning rod, and the top of the axis positioning rod is provided with a fixing bolt for limiting the upward height of the mold core positioning plate. The outer surface of the axis positioning rod is sleeved with a reset elastic piece for supporting the bottom of the mold core positioning plate.

[0016] Preferably, the mold core positioning plate is symmetrically provided with a material discharging air hole penetrating through the mold core positioning plate, the lower end of the material discharging air hole is connected with an air hole connector, the lower end of the air hole connector is provided with an extendable corrugated expansion tube, the corrugated expansion tube extends to the bottom of the mounting base, the end portion of each corrugated expansion tube is provided with an electromagnetic valve, and the electromagnetic valve is connected with an external air charging pump. The bottom of the mounting base is provided with an inner groove, the side surface of the inner groove is provided with an air pipe access hole, the electromagnetic valve is mounted in the inner groove, and an external pipeline is connected with the electromagnetic valve through the air pipe access hole. The axis of the limiting rod is provided with an adsorbing hole, the adsorbing hole extends into the inner groove, and an air suction pipe connector is mounted at the adsorbing hole in the inner groove, and the air suction pipe connector is connected with an external air suction pump.

[0017] As described above, the stamping die for motor rotor machining has the following beneficial effects: 1. The mold core mounting groove is arranged on the stamping table one, the mold core limiting piece is arranged at the axis of the mold core mounting groove, the mold core limiting piece and the mold core mounting groove cooperate to limit the stamping mold core, the punch mounting groove is arranged on the stamping table two, the punching tool is arranged in the punch mounting groove, the stamping mold core and the punching tool are detachably mounted, when the product style is changed, only the stamping mold core and the punching tool need to be replaced, the mold does not need to be replaced as a whole, the use cost is reduced, and after the stamping mold core and the punching tool are replaced, the position of the mold does not need to be re-adjusted, and the convenience of use is improved.

[0018] 2. The present application sets up a die core limiting boss on the inner wall of the die core installation groove and a limiting rod in the die core installation groove, and limits the installation position of the stamping die core through the die core limiting boss and the limiting rod, and sets up a punch limiting boss in the punch installation groove to limit the position of the punching tool, so that the positions of the stamping die core and the punching tool are matched when the stamping die core and the punching tool are installed, and the convenience of mold adjustment is improved.

[0019] 3. The present application sets up an upper die guide on the four corners of the installation base, and sets up a flange sleeve on the four corners of the installation upper seat, and limits the installation position of the installation base and the installation upper seat through the upper die guide and the flange sleeve, so as to further improve the accuracy of the mold stamping.

[0020] 4. The present application sets up a buffer on the periphery of the upper die core installation groove on the stamping table, and supports the buffer sleeve with a buffer elastic element on the outer surface of the guide rod, and the buffer and the buffer elastic element are used to provide a buffer force when the installation upper seat is downwardly stamped, so as to improve the service life of the mold.

[0021] 5. The present application sets up an axis positioning rod on the axis of the die core installation groove, and respectively sleeves a die core positioning plate and a reset elastic element on the axis positioning rod, and supports the die core positioning plate with the reset elastic element, and the die core positioning plate will sink under the pressure after stamping the product, and will rebound under the elastic force of the reset elastic element after the stamping is completed, so as to discharge the edge material in the stamping process from the inside of the stamping groove.

[0022] 6. The present application sets up an adsorbing cotton in the buffer sleeve, and the outer surface of the adsorbing cotton is attached to the surface of the ball, and fills a lubricating object in the buffer sleeve, so that the adsorbing cotton adsorbs the lubricating object to lubricate the ball, so as to further reduce the friction between the ball and the flange sleeve, and improve the service life of the mold.

[0023] 7. The present application sets up a material discharging air hole on the die core positioning plate, connects the air hole with an external air pump through a corrugated expansion pipe, and controls the air of the material discharging air hole through an electromagnetic valve, so that the waste material is driven by high-speed gas after the motor rotor is stamped, and is discharged in a predetermined direction according to the control of the electromagnetic valve.

[0024] Therefore, the present application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure of the present application is shown.

[0026] Figure 2 The structure of the lower mold of the present application is shown.

[0027] Figure 3 shows the structure side view of the lower die of the present application.

[0028] Figure 4 shows the structure schematic diagram of the core spacer of the present application.

[0029] Figure 5 shows the structure schematic diagram of the punch core of the present application.

[0030] Figure 6 shows the assembly schematic diagram of the core spacer of the present application.

[0031] Figure 7 shows the structure schematic diagram of the upper die of the present application.

[0032] Figure 8 shows the structure schematic diagram of the punch of the present application.

[0033] Figure 9 shows the structure sectional view of the upper die guide of the present application.

[0034] Figure 10 shows the structure enlarged schematic diagram of the present application Figure 6 at A.

[0035] Figure 11 shows the structure bottom view of the lower die of the present application.

[0036] Element number explanation: 1, lower die; 11, mounting base; 12, punch table one; 13, core mounting groove; 131, core spacer boss; 132, spacer rod; 133, adsorption hole; 134, air pipe joint; 14, core spacer; 141, shaft center positioning rod; 142, core positioning plate; 143, fixing bolt; 144, reset elastic member; 145, discharge air hole; 146, air hole joint; 147, corrugated expansion pipe; 148, electromagnetic valve; 15, punch core; 151, metal support column; 152, punch groove; 153, rotor outer contour groove; 154, positioning hole; 16, buffer member; 17, spacer baffle; 18, upper die guide; 181, mounting flange plate; 182, guide rod; 183, buffer sleeve; 184, ball; 185, buffer elastic member; 186, adsorption cotton; 187, sealing cover; 19, inner groove; 110, air pipe access hole; 2, upper die; 21, mounting upper seat; 22, punch table two; 23, punch mounting groove; 231, punch spacer boss; 24, punch; 241, punch mounting seat; 242, punch knife; 243, punch spacer groove; 244, connecting fixing hole; 25, flange sleeve. DETAILED DESCRIPTION

[0037] The present application will be described in detail by the following specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application.

[0038] Please refer to Figures 1 to 9 . It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the disclosure of the present specification for those skilled in the art to understand and read, and are not used to limit the defined conditions that the present application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope covered by the disclosed technology of the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship is also considered as the scope of the present application without substantially changing the technical content.

[0039] As shown in Figures 1-2 , Figure 4 , Figures 6-7 , the present application provides a stamping die for motor rotor processing, which comprises a lower die 1 and an upper die 2, and a metal sheet for preparing a rotor core is placed between the lower die 1 and the upper die 2, and the metal sheet is stamped and cut by the lower die 1 and the upper die 2 to form a core sheet of the rotor; Specifically, the lower die 1 comprises a mounting base 11 for mounting below the stamping machine, the upper surface of the mounting base 11 is provided with a stamping table 1 12, the axis of the stamping table 1 12 is provided with a mold core installation slot 13, the axis of the mold core installation slot 13 is provided with a mold core limiting part 14, the mold core installation slot 13 and the mold core limiting part 14 are cooperatively provided with a stamping mold core 15, and the shape of the stamping mold core 15 is set according to the shape of the motor rotor; the stamping mold core 15 can be separated from the mold core installation slot 13, so that when the stamping shape is replaced, only the stamping mold core 15 needs to be replaced, thereby reducing the cost of die design; The upper die 2 comprises a mounting upper seat 21 for mounting above the stamping machine and moving up and down with the stamping part of the stamping machine, the lower surface of the mounting upper seat 21 is provided with a stamping table 2 22, the axis of the stamping table 2 22 is provided with a punch installation slot 23, the axis of the punch installation slot 23 is provided with a punch 24, and the shape of the punch 24 is adapted to the shape of the stamping mold core 15; the punch 24 can be separated from the punch installation slot 23, and when the stamping mold core 15 is replaced, only the punch 24 needs to be replaced, which also reduces the cost of die design. At the same time, when the stamping mold core 15 and the punch 24 are replaced, the positions of the mounting base 11 and the mounting upper seat 21 do not change, so the time for adjusting the position of the die is also reduced.

[0040] The projected areas of the mounting base 11 and the mounting upper seat 21 are equal, and the projected areas of the stamping platform 12 and the stamping platform 2 22 are equal; the outer surface of the stamping die core 15 fits with the inner wall of the die core mounting groove 13 to limit the stamping die core 15 to avoid the stamping die core 15 from shifting during the stamping process; the inner diameter of the punch mounting groove 23 is equal to the outer diameter of the stamping die core 15, and when the mounting upper seat 21 moves downward for stamping, the punch mounting groove 23 and the stamping die core 15 cooperate The outer contour of the metal sheet can be cut; the inner wall of the core mounting groove 13 is provided with a core limiting boss 131, and the inside of the punch mounting groove 23 is provided with a punch limiting boss 231. The shape and position of the core limiting boss 131 and the punch limiting boss 231 are adapted to each other, and are used to limit the installation angle of the stamping core 15 and the punching tool 24. At the same time, the core limiting boss 131 and the punch limiting boss 231 cooperate to cut out the shape of the outer part of the iron chip.

[0041] like Figure 5 As shown, in some embodiments, the stamping die core 15 of the present invention includes a metal support column 151, and a stamping groove 152 is provided at the axis of the metal support column 151. The stamping groove 152 is in the shape of a hole groove in the middle of the iron core; the outer surface of the metal support column 151 is in contact with the inner wall of the die core mounting groove 13. During the stamping process, after the metal support column 151 is positioned by the die core mounting groove 13, it can prevent the metal support column 151 from tilting, thereby improving the stability and accuracy of the stamping; The outer surface of the metal support column 151 is provided with a rotor outer contour groove 153 which is adapted to the position and shape of the mold core limiting boss 131. The rotor outer contour groove 153 is plugged into the mold core limiting boss 131 to further limit the metal support column 151; at the same time, the rotor outer contour groove 153 can also punch out the outer contour of the iron chip with the cooperation of the punch limiting boss 231.

[0042] like Figure 2 、 Figure 5 and Figure 6 As shown, in some embodiments, a positioning hole 154 is provided on the top of the metal support column 151 of the present invention, which vertically passes through the metal support column 151. A limiting rod 132 that is adapted to the position of the positioning hole 154 is provided inside the core mounting groove 13. The limiting rod 132 is inserted into the inside of the positioning hole 154 to limit the metal support column 151. Through the cooperation between the limiting rod 132 and the positioning hole 154, the position of the metal support column 151 can be further limited, thereby further reducing the time for adjusting the installation position when installing the metal support column 151 and improving the convenience of installation.

[0043] like Figure 7 and Figure 8As shown, in some embodiments, the die cutting device 24 comprises a die mounting seat 241, the bottom of the die mounting seat 241 is provided with a die cutter 242, the outer surface section of the die cutter 242 is matched with the inner wall section of the punching groove 152, and the die cutter 242 can be inserted into the inside of the punching groove 152. The outer surface of the die mounting seat 241 is provided with a die limiting groove 243 matched with the die limiting boss 231. When the die cutter 242 punches the metal sheet under the action of pressure, the die cutter 242 cooperates with the punching groove 152 to make the metal sheet punched into the required shape. The outer surface section of the die cutter 242 is matched with the inner wall section of the punching groove 152 to improve the accuracy during punching. The top of the die mounting seat 241 is provided with a connecting fixing hole 244, and the die mounting seat 241 is fixed in the inside of the die mounting groove 23 through the connecting fixing hole 244 by cooperating with the bolt.

[0044] As shown in the drawings, Figure 3 In some embodiments, the upper edge of the die punching table 12 is provided with a limiting baffle 17, and the top of the limiting baffle 17 is higher than the top of the mold core limiting piece 14. When feeding, the limiting baffle 17 will block and limit the metal sheet, so as to avoid the deviation of the metal sheet during feeding and punching.

[0045] As shown in the drawings, Figure 1 and Figure 2 In some embodiments, the upper four corners of the die punching table 12 are provided with an upper die guide 18, and the lower four corners of the mounting upper seat 21 are provided with a flange sleeve 25 matched with the position of the upper die guide 18. The upper die guide 18 can be inserted into the inside of the flange sleeve 25. When the mounting upper seat 21 moves up and down during punching, the upper die guide 18 and the flange sleeve 25 cooperate to limit the position of the mounting upper seat 21, so as to avoid the deviation of the mounting upper seat 21 after being subjected to pressure. On the die punching table 12, the periphery of the mold core mounting groove 13 is provided with a plurality of buffer pieces 16. During the punching process, the buffer pieces 16 will support and buffer the die punching table 22, so as to reduce the impact force between the die punching table 12 and the die punching table 22, and improve the service life of the mold.

[0046] As shown in the drawings, Figure 4 and Figure 6As shown in the drawings, in some embodiments, all the upper die guides 18 of the present application comprise mounting flanges 181 which are mounted by bolts; the mounting flanges 181 are provided with guide rods 182 at the center of the shaft, the upper end of the guide rods 182 is sleeved with a buffer sleeve 183, the buffer sleeve 183 can slide up and down along the axial direction of the guide rod 182, when the mounting upper seat 21 is lowered, the buffer sleeve 183 will be lowered along with the lowering of the mounting upper seat 21, thereby limiting the position of the mounting upper seat 21 through the guide rod 182; the outer surface of the guide rod 182 is sleeved with a buffer elastic member 185, the buffer elastic member 185 supports the buffer sleeve 183 through elastic support force, when the buffer sleeve 183 is lowered, the buffer elastic member 185 will exert an elastic force on the buffer sleeve 183 to achieve the buffering of the force.

[0047] As shown in the drawings, Figure 6 in some embodiments of the present application, the outer surface of the buffer sleeve 183 is provided with a plurality of balls 184, the outer surface of the ball 184 is in contact with the inner wall of the flange sleeve 25, the ball 184 can rotate, thereby reducing the friction between the outer surface of the buffer sleeve 183 and the inner wall of the flange sleeve 25, and improving the service life of the mold.

[0048] As shown in the drawings, Figure 9 in some embodiments of the present application, the buffer sleeve 183 is provided with a cavity inside, the cavity is provided with adsorbing cotton 186, the upper part of the guide rod 182 is provided with a sealing cover 187 for closing the cavity, and the adsorbing cotton 186 is convenient to maintain and replace; the cavity is filled with lubricating material, the outer surface of the adsorbing cotton 186 is in contact with the outer surface of the ball 184. When the buffer sleeve 183 is forced to slide down, the end of the guide rod 182 will exert pressure on the adsorbing cotton 186, so that the lubricating material adsorbed by the adsorbing cotton 186 is extruded out and in contact with the outer surface of the ball 184, so as to improve the lubricity of the surface of the ball 184, for further reducing the friction, and improving the service life of the mold.

[0049] As shown in the drawings, Figure 4 and Figure 6As shown in the drawings, in some embodiments, the mold core limiting piece 14 of the present application comprises an axial positioning rod 141 arranged at the center of the mold core mounting groove 13, the outer surface of the axial positioning rod 141 is sleeved with a mold core positioning plate 142, the mold core positioning plate 142 can slide up and down on the outer surface of the axial positioning rod 141, the top of the axial positioning rod 141 is provided with a fixing bolt 143 to limit the rising height of the mold core positioning plate 142, when the stamping mold core 15 is mounted, the outer surface of the mold core positioning plate 142 is in contact with the inner wall of the stamping groove 152, which can limit the installation position of the metal supporting column 151; the outer surface of the axial positioning rod 141 is sleeved with a reset elastic piece 144 to support the bottom of the mold core positioning plate 142; during stamping, the acting force of stamping will make the mold core positioning plate 142 descend, reducing the hard impact between the molds; after stamping, the reset elastic piece 144 exerts a counteracting force on the mold core positioning plate 142, so that the mold core positioning plate 142 returns to the initial position, and the waste material after stamping is pushed out from the inside of the stamping groove 152.

[0050] As shown in the drawings, Figure 6 , Figure 10 and Figure 11 As shown in the drawings, in some embodiments, the mold core positioning plate 142 of the present application is symmetrically provided with a discharge air hole 145 penetrating through the mold core positioning plate 142, the lower end of the discharge air hole 145 is connected with an air hole connector 146, the air hole connector 146 is detachably mounted with the discharge air hole 145, and can be assembled as needed, the lower end of the air hole connector 146 is provided with an extendable corrugated expansion tube 147, when the mold core positioning plate 142 rises and falls, the corrugated expansion tube 147 changes its length by expansion and contraction, avoiding the corrugated expansion tube 147 being pinched by the reset elastic piece 144; the corrugated expansion tube 147 extends to the bottom of the mounting base 11, the end of each corrugated expansion tube 147 is provided with an electromagnetic valve 148, and the electromagnetic valve 148 is connected with an external air charging pump; after the rotor stamping is completed, high-speed gas can be filled into the discharge air hole 145 through the external air charging pump, and the waste material after stamping is discharged from the mold through the high-speed gas, and the electromagnetic valve 148 controls the air passage of the discharge air hole 145 by controlling the on-off of the corrugated expansion tube 147, so as to change the discharge direction of the waste material and make the waste material turn over in the predetermined direction.

[0051] The bottom of the mounting base 11 is provided with an inner groove 19, the side surface of the inner groove 19 is provided with an air pipe access hole 110, the electromagnetic valve 148 is mounted in the inner groove 19, and the external pipeline is connected with the electromagnetic valve 148 through the air pipe access hole 110, so that the electromagnetic valve 148 is hidden in the inside of the mounting base 11, avoiding the electromagnetic valve 148 being damaged due to impact, at the same time, the mounting base 11 is convenient to install, and the air pipe is externally connected from the air pipe access hole 110, which can avoid the air pipe being pinched; If necessary, the electromagnetic valve 148 can be communicated with the guide rod 182 through a pipeline, and the guide rod 182 is provided with a hollow, and the inside of the buffer sleeve 183 is not provided with a lubricating object, and when the buffer sleeve 183 is lowered, the air inside the buffer sleeve 183 is compressed to generate high pressure, and when the punch contacts, the high-pressure gas is discharged from the exhaust hole 145 through the corrugated expansion pipe 147, so as to realize the above-mentioned exhaust function.

[0052] The shaft of the limiting rod 132 is provided with the adsorption hole 133 extending into the inner groove 19, and the adsorption hole 133 is provided with the air extraction pipe joint 134 at the inner groove 19, and the air extraction pipe joint 134 is connected with an external air extraction pump, so that when the waste is discharged by inflation, the motor rotor sheet is prevented from displacement, the air extraction pump extracts air to generate suction at the adsorption hole 133, and the motor rotor sheet is adsorbed.

[0053] In summary, the motor rotor machining punch die has the following advantages: the die core mounting groove 13 and the die core limiting part 14 are arranged on the punch table 1, and the punch die core 15 is limited by the die core mounting groove 13 and the die core limiting part 14, the punch mounting groove 23 is arranged on the punch table 2, and the punch cutter 24 is arranged in the punch mounting groove 23, the punch die core 15 and the punch cutter 24 are detachably mounted, when the product style is changed, only the punch die core 15 and the punch cutter 24 need to be replaced, the overall die need not be replaced, the use cost is reduced, and after the punch die core 15 and the punch cutter 24 are replaced, the position of the die need not be re-adjusted, and the convenience of use is improved.

[0054] The die core limiting boss 131 is arranged on the inner wall of the die core mounting groove 13, the limiting rod 132 is arranged in the die core mounting groove 13, the mounting position of the punch die core 15 is limited by the die core limiting boss 131 and the limiting rod 132, the punch limiting boss 231 is arranged in the punch mounting groove 23 to limit the position of the punch cutter 24, the positions of the punch die core 15 and the punch cutter 24 are matched when the punch die core 15 and the punch cutter 24 are mounted, and the convenience of die adjustment is improved.

[0055] The upper die guide 18 is arranged at the four corners of the mounting base 11, and the flange sleeve 25 is arranged at the four corners of the mounting upper seat 21, the mounting positions of the mounting base 11 and the mounting upper seat 21 are limited by the upper die guide 18 and the flange sleeve 25, and therefore the accuracy of die punching is further improved.

[0056] The present application sets the buffer 16 on the periphery of the core installation slot 13 on the punching platform 12, and sets the buffer elastic piece 185 on the outer surface of the guide rod 182, and supports the buffer sleeve 183, when the upper seat 21 is installed and punched downward, the buffer 16 and the buffer elastic piece 185 are used to provide the buffer force, and the service life of the mold is improved.

[0057] The present application sets the shaft positioning rod 141 on the shaft of the core installation slot 13, sets the core positioning plate 142 and the reset elastic piece 144 on the shaft positioning rod 141, and supports the core positioning plate 142 through the reset elastic piece 144, after the product is punched, the core positioning plate 142 will sink under the action of the pressure, after the punching is completed, the core positioning plate 142 will rebound under the elastic force of the reset elastic piece 144, so that the corner material in the punching process is discharged from the inside of the punching groove 152.

[0058] The present application sets the adsorbing cotton 186 in the buffer sleeve 183, and the outer surface of the adsorbing cotton 186 is attached to the surface of the ball 184, and the buffer sleeve 183 is filled with lubricating material, so that the adsorbing cotton 186 adsorbs the lubricating material to lubricate the ball 184, which is used to further reduce the friction between the ball 184 and the flange sleeve 25, so as to improve the service life of the mold.

[0059] The present application sets the material discharge air hole 145 on the core positioning plate 142, and connects the material discharge air hole 145 with the external air pump through the corrugated expansion pipe 147, and controls the air of the material discharge air hole 145 through the electromagnetic valve 148, when the motor rotor is punched, the waste material can be driven by high-speed gas, and the waste material is discharged in the predetermined direction according to the control of the electromagnetic valve 148.

[0060] Therefore, the present application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0061] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. A stamping die for machining a motor rotor, characterized in that: The utility model relates to a stamping die, including lower mould (1) and upper mould (2), the upper surface of the installation base (11) is provided with stamping station one (12), the axle core of stamping station one (12) is provided with mould core installation groove (13), the axle core of mould core installation groove (13) is provided with mould core limiting piece (14), mould core installation groove (13) and mould core limiting piece (14) are cooperated and are provided with stamping mould core (15), and stamping mould core (15) can be separated from mould core installation groove (13) inside, the lower surface of the installation upper seat (21) is provided with stamping station two (22), the axle core of stamping station two (22) is provided with punch installation groove (23), the axle core of punch installation groove (23) is provided with punch cutting tool (24), and punch cutting tool (24) can be separated from punch installation groove (23) inside, the projection area of installation base (11) and installation upper seat (21) is equal, the projection area of stamping station one (12) and stamping station two (22) is equal, the outer surface of stamping mould core (15) is attached with the inner wall of mould core installation groove (13), the inner diameter of punch installation groove (23) is equal with the outer diameter of stamping mould core (15), the inner wall of mould core installation groove (13) is provided with mould core limiting boss (131), the inside of punch installation groove (23) is provided with punch limiting boss (231), and the shape and position of mould core limiting boss (131) and punch limiting boss (231) are all adapted.

2. The stamping die for processing the motor rotor according to claim 1, characterized in that: The stamping mould core (15) includes metal support column (151), the axle core of metal support column (151) is provided with stamping groove (152), and the outer surface of metal support column (151) is attached with the inner wall of mould core installation groove (13);The outer surface of metal support column (151) is provided with rotor outer contour groove (153) that is adapted with the position and shape of mould core limiting boss (131), and rotor outer contour groove (153) is inserted with mould core limiting boss (131).

3. The stamping die for processing the motor rotor according to claim 2, characterized in that: The top of metal support column (151) is provided with positioning hole (154) that is vertically through metal support column (151), the inside of mould core installation groove (13) is provided with limiting rod (132) that is adapted with the position of positioning hole (154), and limiting rod (132) is inserted in the inside of positioning hole (154) and limits metal support column (151).

4. The stamping die for processing the motor rotor according to claim 2, characterized in that: The punching device (24) comprises a punch mounting seat (241), the bottom of the punch mounting seat (241) is provided with a punch knife (242), the outer surface section of the punch knife (242) is matched with the inner wall section of the punching groove (152), and the punch knife (242) can be inserted into the punching groove (152); the outer surface of the punch mounting seat (241) is provided with a punch limiting groove (243) matched with the punch limiting boss (231); the top of the punch mounting seat (241) is provided with a connecting fixing hole (244), and the punch mounting seat (241) is fixed in the punch mounting groove (23) through the connecting fixing hole (244) and a cooperation bolt.

5. The stamping die for processing the motor rotor according to claim 1, characterized in that: The upper edge of the first punching table (12) is provided with a limiting baffle (17), and the top of the limiting baffle (17) is higher than the top of the mold core limiting piece (14).

6. The stamping die for processing the motor rotor according to claim 1, characterized in that: The upper corners of the first punching table (12) are provided with upper die guides (18), the lower corners of the mounting upper seat (21) are provided with flange sleeves (25) matched with the positions of the upper die guides (18), and the upper die guides (18) can be inserted into the flange sleeves (25); the periphery of the mold core mounting groove (13) on the first punching table (12) is provided with a plurality of buffer pieces (16).

7. The stamping die for processing the motor rotor according to claim 6, characterized in that: All the upper die guides (18) comprise mounting flanges (181), the center of the mounting flange (181) is provided with a guide rod (182), the upper end of the guide rod (182) is sleeved with a buffer sleeve (183), the buffer sleeve (183) can slide up and down along the axis of the guide rod (182), the outer surface of the guide rod (182) is sleeved with a buffer elastic piece (185), and the buffer elastic piece (185) supports the buffer sleeve (183) through elastic supporting force.

8. The stamping die for processing the motor rotor according to claim 7, characterized in that: The outer surface of the buffer sleeve (183) is provided with a plurality of rolling balls (184), the outer surface of the rolling ball (184) is attached to the inner wall of the flange sleeve (25), and the rolling ball (184) can rotate; the inside of the buffer sleeve (183) is provided with a cavity, the cavity is provided with adsorbing cotton (186), the upper portion of the guide rod (182) is provided with a sealing cover (187) for closing the cavity; the cavity is filled with lubricating objects, and the outer surface of the adsorbing cotton (186) is attached to the outer surface of the rolling ball (184).

9. The stamping die for processing the motor rotor according to claim 3, characterized in that: The mold core limiting piece (14) comprises an axis positioning rod (141) arranged at the axis of the mold core mounting groove (13), the outer surface of the axis positioning rod (141) is sleeved with a mold core positioning plate (142), the mold core positioning plate (142) can slide up and down on the outer surface of the axis positioning rod (141), the top of the axis positioning rod (141) is provided with a fixing bolt (143) for limiting the rising height of the mold core positioning plate (142); the outer surface of the axis positioning rod (141) is sleeved with a reset elastic piece (144) for supporting the bottom of the mold core positioning plate (142).

10. The stamping die for processing the motor rotor according to claim 9, characterized in that: The mold core positioning plate (142) is symmetrically provided with a through-hole (145) penetrating the mold core positioning plate (142), the lower end of the through-hole (145) is connected with a through-hole connector (146), the lower end of the through-hole connector (146) is provided with an extensible bellows (147), the bellows (147) extends to the bottom of the mounting base (11), the end of each bellows (147) is provided with an electromagnetic valve (148), the electromagnetic valve (148) is connected with an external air pump; the bottom of the mounting base (11) is provided with an inner groove (19), the side of the inner groove (19) is provided with an air pipe access hole (110), the electromagnetic valve (148) is mounted in the inner groove (19), and an external pipeline is connected with the electromagnetic valve (148) through the air pipe access hole (110); the shaft of the limiting rod (132) is provided with a suction hole (133), the suction hole (133) extends into the inner groove (19), and the suction hole (133) is provided with a suction pipe connector (134) at the inner groove (19), the suction pipe connector (134) is connected with an external suction pump.

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