Adjustable motor iron core large rotation mold and use method thereof

Abstract

The invention discloses an adjustable motor iron core large-rotation die and a using method thereof, relates to the technical field of motor iron core dies, and solves the problems that when a motor iron core large-rotation die is used, due to the fact that the shapes of iron cores are different, machining steps are different, needed dies are different, and the machining cost is high. And therefore, the iron core of each shape needs to be processed by a set of corresponding die, and the operation is very inconvenient. The invention relates to an adjustable motor iron core large rotation die and a use method thereof, the adjustable motor iron core large rotation die comprises an upper die, and eight lower die assemblies are arranged below the upper die; a rotor-shaped punching die, a rotor hole punching die, a rotor riveting punching die, a rotor blanking die, a stator-shaped punching die, a stator riveting punching die, an idle step die and a stator blanking die are sequentially and movably arranged in each lower die assembly. Through the combination of the main mold tables, the device can replace different molds for machining according to different shapes of motor iron cores needing to be machined.

Description

Technical Field

[0001] The invention relates to the field of motor iron core moulds, in particular to an adjustable large rotary mould for motor iron cores and a use method thereof. Background Art

[0002] The motor core is made of silicon steel sheets or other materials stacked and riveted one by one. In order to compensate for the stacking cumulative error caused by the uneven thickness of the punched material and improve the electromagnetic performance of the motor, each punch on the core must be rotated a specified angle before stacking. The rotation angle is generally 60°, 90°, 120°, 180°, etc.

[0003] When using the existing large rotary mold for motor cores, the different shapes of the cores often lead to different processing steps and different molds. As a result, each shape of the core requires a set of corresponding molds for processing, which is very inconvenient. Therefore, it does not meet the existing needs. In this regard, we propose an adjustable large rotary mold for motor cores and a method for using it. Summary of the invention

[0004] The purpose of the present invention is to provide an adjustable large rotary mold for motor core and a method of using the same, so as to solve the problem that when the large rotary mold for motor core is used, due to the different shapes of the cores, different processing steps are often required, and different molds are required, resulting in each shape of core requiring a set of corresponding molds for processing, which is very inconvenient.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable large rotary die for a motor core, comprising an upper die, eight lower die assemblies are arranged below the upper die, and a rotor-shaped die, a rotor hole die, a rotor riveting die, a rotor blanking die, a stator-shaped die, a stator riveting die, an empty step die and a stator blanking die are arranged and movably installed in sequence inside each of the lower die assemblies, a combination structure is provided on one side of the lower die assembly, and a rotary structure is provided on the front side of the lower die assembly; The lower mold assembly includes a main mold platform, a plug-in rod, a plug-in slot, a sub-mold platform, a large positioning sleeve, a small positioning sleeve and a mold positioning slot. The sub-mold platforms are fixedly installed on the front and rear sides of the main mold platform, a plug-in rod is fixedly installed on one side of the sub-mold platform, and a plug-in slot is provided on the other side of the sub-mold platform. The plug-in rods are slidably inserted into the inside of the plug-in slot. A large positioning sleeve is fixedly installed at the center of the top of the sub-mold platform, and small positioning sleeves are fixedly installed on both sides of the top of the sub-mold platform. The top surface of the main mold platform is provided with a mold positioning slot; The surfaces of the rotor-shaped die, rotor hole die, rotor riveting die, stator-shaped die, stator riveting die and empty step die are all fixedly installed with die positioning buckles, and the die positioning buckles are movably inserted into the inside of the die positioning groove. The bottom end of the main die table on which the rotor blanking die and the stator blanking die are installed is movably installed with a discharge table facing the front side, and the bottom ends of the remaining main die tables are movably installed with a discharge table facing the rear side.

[0006] Preferably, the lower mold assembly also includes a material baffle plate, a shrinkage groove and a compression spring. The inner wall surface of the main mold platform is provided with two shrinkage grooves, and a material baffle plate is slidably installed inside. A plurality of compression springs are movably installed between the material baffle plate and the inside of the shrinkage groove.

[0007] Preferably, the combined structure includes a first combined plate, a second combined plate, a combined plug rod, a handle rocker, a driven gear and a driving gear. The first combined plate is fixedly installed on one side of the bottom end of the main mold platform, and the second combined plate is fixedly installed on the other side of the bottom end of the main mold platform. The outer side of the second combined plate is fixedly installed with a combined plug rod. The surface of the first combined plate is provided with a through hole, and the inside of the through hole is movably installed with a driven gear. The outer side of the driven gear is meshed and connected with the driving gear, and the outer end of the driving gear is fixedly connected with a handle rocker, and the handle rocker passes through the surface of the first combined plate and extends to the outer side of the first combined plate, and the combined plug rod is movably inserted into the inside of the driven gear.

[0008] Preferably, the combined structure also includes a spring groove, an extrusion spring, a limit buckle, a limit groove, an outer groove of a combined plate and an inclined surface. The outer surface of the combined insertion rod is provided with four limit grooves, and the inner wall surface of the driven gear is provided with four spring grooves. The interior of the spring grooves is slidably installed with a limit buckle, and the limit buckles are movably inserted into the interior of the limit grooves. An extrusion spring is movably installed between the limit buckle and the interior of the spring groove, and the surface of the limit buckle is provided with an inclined surface. The end angle position of the side surface of the second combined plate close to the combined insertion rod is provided with an outer groove of the combined plate, and the handle rocker is movably inserted into the interior of the outer groove of the combined plate.

[0009] Preferably, the rotating structure includes a fixed plate, a stepper motor, a synchronous belt and a mold table side groove. The front surface of the auxiliary mold table close to the front side is fixedly installed with a fixed plate, and the front surface of the auxiliary mold table with the fixed plate installed is provided with a mold table side groove. A stepper motor is fixedly installed above the fixed plate located in front of the rotor blanking die and the stator blanking die, and the output end of the stepper motor is connected to the fixed plate through a coupling. A synchronous belt is movably installed on the outer surface of the output end of the stepper motor, and the synchronous belt is movably inserted into the inside of the mold table side groove.

[0010] Preferably, the bottom ends of the rotor blanking die and the stator blanking die are both provided with bearing seats, and the bottom ends of the bearing seats are both provided with rotating sleeves, and the rotating sleeves are movably inserted into the inner position of the synchronous belt, and the inner wall surface of the rotating sleeve is provided with a locking ring, and the locking ring and the rotating sleeve are interference fit.

[0011] Preferably, the bottom end surfaces of the locking ring and the rotating shaft sleeve are fitted with the top end surface of the baffle plate, an electric push rod is provided below the baffle plate, and the top end surface of the output end of the electric push rod is fixedly connected to the bottom end surface of the baffle plate.

[0012] Preferably, support frames are movably installed at the bottom ends of the front and rear sides of the main mold platform, and support plates are fixedly installed at the top ends of the support frames. The support plates are fitted with the bottom surface of the main mold platform, and material belt transport plates are installed on the front and rear sides of the top end of the main mold platform by bolts.

[0013] Preferably, a plurality of positioning rods are fixedly mounted on the bottom surface of the upper die, and seven die punches are provided at the center of the bottom end of the upper die, respectively corresponding to the positions of the rotor-shaped die, rotor hole die, rotor riveting die, rotor blanking die, stator-shaped die, stator riveting die and stator blanking die, and the positioning rods are respectively movably inserted into the interior of the large positioning sleeve and the small positioning sleeve.

[0014] A method for using an adjustable large rotary die for a motor core, the method comprising the following steps: Step A: first, according to the shape of the iron core to be punched, the rotor-shaped die, rotor hole die, rotor riveting die, rotor blanking die, stator-shaped die, stator riveting die, empty step die and stator blanking die of corresponding shapes are placed in the main die table in sequence, and then the plug rod is inserted into the plug slot, and the combined plug rod is inserted into the driven gear at the same time, so that multiple main die tables are combined with each other, and the device is supported by the support frame and the pallet and transported to the bottom of the upper die, and the positions of the positioning plug rod and the large positioning sleeve and the small positioning sleeve are made to correspond to each other, so that the device can replace different molds for processing according to the different shapes of the motor iron core to be processed; Step B: The material strip transport plates are respectively installed at the front and rear sides of the top of each main die table by bolts, and then the material strip is transported between the material strip transport plates on both sides, so that the material strip passes through the surfaces of the rotor-shaped die, the rotor hole die, the rotor riveting die, the rotor blanking die, the stator-shaped die, the stator riveting die, the step die and the stator blanking die in sequence, and is punched by the punch at the bottom end of the upper die; Step C: When the material strip passes through the rotor blanking die position, the rotor slice will be punched out of the material strip by the punch and fall into the bottom surface of the rotor blanking die. At this time, the rotor slice will be blocked by the baffle plate and stay inside the main die table. At this time, the output end will be driven to rotate by the stepper motor, so that it drives the rotating shaft sleeve to rotate through the synchronous belt, thereby driving the rotor blanking die to rotate through the rotating shaft sleeve, so that the rotor blanking die drives the inner rotor slice to rotate a certain angle through the locking ring, and then another rotor slice is punched out by the punch and falls on the top of the first rotor slice, so that the two are stacked and riveted together, and then the stepper motor drives the rotor blanking die to rotate once again, so that multiple rotor slices are stacked and riveted together in sequence, so as to avoid the situation that the rotor slice has a thickness difference on the surface of the rotor slice due to the thickness difference of the raw material during stamping. At this time, if the rotor slice is directly stacked and riveted, the formed rotor will tilt to one side, resulting in an imbalance between the rotor and the stator; Step D: After the rotor is formed, the electric push rod drives the baffle plate to retract into the inside of the shrinkage groove, thereby opening the blanking hole position below the rotor blanking die, so that the formed rotor falls onto the surface of the discharge table through the blanking hole and slides along the discharge table to the exit position, which is convenient for the staff to take. Then the electric push rod pushes the baffle plate back to its original position to block the next rotor sheet; Step E: When the material strip moves to the position of the stator blanking die, similarly to step C, each stator sheet is blocked by the baffle plate and stays inside the main die table, and the stepper motor drives the stator blanking die to rotate once each time, so that the next stator sheet is stacked and riveted together in sequence, until the stator is formed, similarly to step D, the stator is transported to the exit position through the discharge table for easy access by the staff; Step F: When installing the rotor-shaped die, rotor hole die, rotor riveting die, stator-shaped die, stator riveting die and empty step die, the die positioning buckle can be inserted into the die positioning groove to position the rotor-shaped die, rotor hole die, rotor riveting die, stator-shaped die, stator riveting die and empty step die to avoid the angle deviation after stamping, which leads to the situation that when the rotor and stator are stacked and riveted, the angles of the convex buckles and convex grooves on the surfaces of the rotor and stator sheets punched by the rotor riveting die and the stator riveting die are inconsistent after being driven and rotated by the stepper motor, and the rivet cannot be stacked.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with the mold positioning buckle and the mold positioning groove so that when the device installs the mold, the mold positioning buckle can be positioned through the mold positioning groove, thereby positioning the angle of the mold to avoid the angle deviation after stamping. When the rotor and the stator are riveted together, due to the wrong angle, the convex buckles and convex grooves on the surfaces of the rotor and stator sheets punched by the rotor riveting die and the stator riveting die do not match the angle after being driven and rotated by the stepper motor, and the riveting cannot be performed.

[0016] 2. The present invention cooperates with the rotor blanking die and the stator blanking die, so that when punching the rotor sheet and the stator sheet, the device can be driven by the stepping motor to rotate once, and then the next rotor sheet and the stator sheet are stacked and riveted, so as to avoid the thickness difference of the sheet surface caused by the thickness difference of the raw materials during the punching. At this time, if the stacking and riveting are directly performed, the formed rotor or stator will be tilted to one side, resulting in an imbalance between the rotor and the stator; 3. The present invention cooperates with the plug-in rod and the plug-in slot so that when the device is in use, different numbers of stamping steps can be selected according to the shape of the motor core to be stamped, thereby selecting different numbers of main mold tables for combined use, so that the molds inside the main mold tables can be replaced or removed to adapt to actual conditions, so that the device can replace different molds for processing according to the different shapes of the motor core to be processed, and according to the cooperation of the combined plug-in rod and the driven gear, the main mold tables can be combined after the combination by inserting the limit buckle into the inside of the limit slot, so that the cooperation between the main mold tables is stable and the separation of the main mold tables can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A cross-sectional front view of the present invention as a whole; Figure 3 It is a cross-sectional side view of the position of the stator blanking die of the present invention; Figure 4 A cross-sectional side view of the position of the stator-shaped die of the present invention; Figure 5 A cross-sectional top view of the present invention as a whole; Figure 6 It is a cross-sectional side view of the first combined plate position of the present invention; Figure 7 For the present invention Figure 3 Schematic diagram of the local structure of part A; Figure 8 For the present invention Figure 7 Schematic diagram of the local structure in the middle TT direction; Fig. 9 For the present invention Figure 6 Schematic diagram of the local structure of part B; Fig.10 For the present invention Fig. 9 Schematic diagram of the local structure in the LL direction; Fig.11 For the present invention Fig.10 Schematic diagram of the local structure of part C.

[0018] In the figure: 1. lower mold assembly; 101. main mold platform; 102. plug-in rod; 103. plug-in slot; 104. auxiliary mold platform; 105. large positioning sleeve; 106. small positioning sleeve; 107. mold positioning slot; 108. baffle plate; 109. contraction slot; 110. compression spring; 2. combined structure; 201. first combined plate; 202. second combined plate; 203. combined plug-in rod; 204. handle rocker; 205. driven gear; 206. driving gear; 207. spring groove; 208. extrusion spring; 209. limit buckle; 210. limit slot; 211 , outer groove of combined plate; 212, inclined plane; 3, rotating structure; 301, fixed plate; 302, stepping motor; 303, synchronous belt; 304, side groove of die table; 4, unloading table; 5, supporting frame; 6, pallet; 7, material belt transport plate; 8, rotor-shaped punch; 9, rotor hole punch; 10, rotor riveting punch; 11, rotor blanking die; 12, stator-shaped punch; 13, stator riveting punch; 14, empty step die; 15, stator blanking die; 16, upper die; 17, positioning rod; 18, mold positioning buckle; 19, bearing seat; 20, rotary shaft sleeve; 21, locking ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figures 1 to 11 , an embodiment of the present invention: an adjustable large rotary die for a motor core, comprising an upper die 16, eight lower die assemblies 1 are arranged below the upper die 16, and a rotor-shaped die 8, a rotor hole die 9, a rotor riveting die 10, a rotor blanking die 11, a stator-shaped die 12, a stator riveting die 13, an empty step die 14 and a stator blanking die 15 are arranged and movably installed in sequence inside each lower die assembly 1, a combined structure 2 is provided on one side of the lower die assembly 1, and a rotary structure 3 is provided on the front side of the lower die assembly 1; The lower mold assembly 1 includes a main mold platform 101, a plug-in rod 102, a plug-in slot 103, a sub-mold platform 104, a large positioning sleeve 105, a small positioning sleeve 106 and a mold positioning slot 107. The sub-mold platform 104 is fixedly installed on both the front and rear sides of the main mold platform 101, the plug-in rod 102 is fixedly installed on one side of the sub-mold platform 104, and the plug-in slot 103 is provided on the other side of the sub-mold platform 104. The plug-in rod 102 is slidably inserted into the inside of the plug-in slot 103. A large positioning sleeve 105 is fixedly installed at the center of the top of the sub-mold platform 104, and small positioning sleeves 106 are fixedly installed on both sides of the top of the sub-mold platform 104. The top surface of the main mold platform 101 is provided with a mold positioning slot 107; The surfaces of the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the stator-shaped die 12, the stator riveting die 13 and the empty step die 14 are all fixedly installed with die positioning buckles 18, and the die positioning buckles 18 are all movably inserted into the inside of the die positioning groove 107. The bottom end of the main die table 101 on which the rotor blanking die 11 and the stator blanking die 15 are installed is movably installed with a discharge table 4 facing the front side, and the bottom ends of the remaining main die tables 101 are all movably installed with a discharge table 4 facing the rear side.

[0021] Through the cooperation of the mold positioning buckle 18 and the mold positioning groove 107, the device can position the mold positioning buckle 18 through the mold positioning groove 107 when installing the mold, thereby positioning the angle of the mold to avoid the angle deviation after stamping resulting in the angle being incorrect when riveting the rotor and the stator. The convex buckles and convex grooves on the surfaces of the rotor and stator sheets punched by the rotor riveting die 10 and the stator riveting die 13 do not match the angles after being driven and rotated by the stepper motor 302, and riveting cannot be performed.

[0022] The lower mold assembly 1 also includes a baffle plate 108, a shrinkage groove 109 and a compression spring 110. The inner wall surface of the main mold platform 101 is provided with two shrinkage grooves 109. The inside of 10 is slidably installed with a baffle plate 108, and multiple compression springs 110 are movably installed between the baffle plate 108 and the inside of the shrinkage groove 109.

[0023] Through the cooperation of the plug rod 102 and the plug slot 103, when the device is in use, different numbers of stamping steps can be selected according to the shape of the motor core to be stamped, thereby selecting different numbers of main mold tables 101 for combined use, so that the mold inside the main mold table 101 can be replaced or removed to adapt to the actual situation, so that the device can replace different molds for processing according to the different shapes of the motor core to be processed, and according to the cooperation of the combined plug rod 203 and the driven gear 205, after the main mold tables 101 are combined, the limiting buckle 209 can be inserted into the limiting slot 210, so that the main mold tables 101 can be stably matched, avoiding the separation of the main mold tables 101; When the main mold platform 101 needs to be separated, the handle rocker 204 can be pressed downward to make the handle rocker 204 drive the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 205 to rotate, and the driven gear 205 drives the limit buckle 209 to rotate. At this time, the limit buckle 209 will retract into the inside of the spring groove 207 due to the inclined surface 212 on the surface, thereby releasing the limit buckle 209 from the limit groove 210. At this time, the two main mold platforms 101 can be directly separated to both sides, so that the combined insertion rod 203 can be pulled out from the inside of the driven gear 205; When the main mold platform 101 needs to be combined, the handle rocker 204 is first pulled upward to keep it parallel to the ground, and then the combination rod 203 can be inserted into the interior of the driven gear 205. At this time, the surface of the combination rod 203 will hit the inclined surface 212 on the surface of the limiting buckle 209, causing the inclined surface 212 to retract into the interior of the spring groove 207. When the combination rod 203 is fully inserted into the interior of the driven gear 205, the limiting buckle 209 will be squeezed by the elastic potential energy of the spring 208 and popped out and stuck into the interior of the limiting groove 210, thereby limiting the combination rod 203 and preventing the main mold platforms 101 from separating.

[0024] The combined structure 2 includes a first combined plate 201, a second combined plate 202, a combined plug rod 203, a handle rocker 204, a driven gear 205 and a driving gear 206. The first combined plate 201 is fixedly installed on one side of the bottom end of the main mold platform 101, and the second combined plate 202 is fixedly installed on the other side of the bottom end of the main mold platform 101. The outer side of the second combined plate 202 is fixedly installed with a combined plug rod 203. The surface of the first combined plate 201 is provided with a through hole, and the inside of the through hole is movably installed with a driven gear 205. The outer side of the driven gear 205 is meshed and connected with the driving gear 206. The outer end of the driving gear 206 is fixedly connected with a handle rocker 204. The handle rocker 204 passes through the surface of the first combined plate 201 and extends to the outer side of the first combined plate 201. The combined plug rod 203 is movably inserted into the inside of the driven gear 205.

[0025] The combined structure 2 also includes a spring groove 207, an extrusion spring 208, a limit buckle 209, a limit groove 210, a combined plate outer groove 211 and an inclined surface 212. The outer surface of the combined insertion rod 203 is provided with four limit grooves 210, and the inner wall surface of the driven gear 205 is provided with four spring grooves 207. The inner part of the spring groove 207 is slidably installed with a limit buckle 209, and the limit buckle 209 is movably inserted into the inner part of the limit groove 210. An extrusion spring 208 is movably installed between the limit buckle 209 and the inner part of the spring groove 207. The surface of the limit buckle 209 is provided with an inclined surface 212. The end angle position of the side surface of the second combined plate 202 close to the combined insertion rod 203 is provided with a combined plate outer groove 211, and the handle rocker 204 is movably inserted into the inner part of the combined plate outer groove 211.

[0026] The rotating structure 3 includes a fixed plate 301, a stepper motor 302, a synchronous belt 303 and a mold table side groove 304. The front surface of the auxiliary mold table 104 close to the front side is fixedly installed with a fixed plate 301, and the front surface of the auxiliary mold table 104 installed with the fixed plate 301 is provided with a mold table side groove 304. The stepper motor 302 is fixedly installed above the fixed plate 301 located in front of the rotor blanking die 11 and the stator blanking die 15. The output end of the stepper motor 302 is connected to the fixed plate 301 through a coupling, and the synchronous belt 303 is movably installed on the outer surface of the output end of the stepper motor 302, and the synchronous belt 303 is movably inserted into the inside of the mold table side groove 304.

[0027] Through the cooperation of the rotor blanking die 11 and the stator blanking die 15, when the device is punching the rotor sheet and the stator sheet, it can be driven by the stepper motor 302 to rotate once, and then the next rotor sheet and the stator sheet can be stacked and riveted, so as to avoid the thickness difference of the sheet surface due to the thickness difference of the raw materials when the sheet is punched. At this time, if the stacking and riveting are directly performed, the formed rotor or stator will be tilted to one side, resulting in an imbalance between the rotor and the stator.

[0028] The bottom ends of the rotor blanking die 11 and the stator blanking die 15 are both provided with a bearing seat 19, and the bottom ends of the bearing seat 19 are both provided with a rotating shaft sleeve 20, which is movably inserted into the inner position of the synchronous belt 303, and the inner wall surface of the rotating shaft sleeve 20 is provided with a locking ring 21, and the locking ring 21 and the rotating shaft sleeve 20 are interference fit.

[0029] The bottom surfaces of the locking ring 21 and the rotating shaft sleeve 20 are fitted with the top surface of the baffle plate 108 . An electric push rod is provided below the baffle plate 108 , and the top surface of the output end of the electric push rod is fixedly connected to the bottom surface of the baffle plate 108 .

[0030] Support frames 5 are movably installed at the bottom ends of the front and rear sides of the main mold platform 101, and support plates 6 are fixedly installed at the top ends of the support frames 5. The support plates 6 are in contact with the bottom surface of the main mold platform 101, and material belt transport plates 7 are installed on the front and rear sides of the top end of the main mold platform 101 by bolts.

[0031] A plurality of positioning rods 17 are fixedly mounted on the bottom surface of the upper die 16. Seven die punches are provided in the center of the bottom of the upper die 16, and they correspond to the positions of the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the rotor blanking die 11, the stator-shaped die 12, the stator riveting die 13 and the stator blanking die 15, respectively. The positioning rods 17 are movably inserted into the inside of the large positioning sleeve 105 and the small positioning sleeve 106, respectively.

[0032] A method for using an adjustable large rotary die for a motor core, the method comprising the following steps: Step A: First, according to the shape of the iron core to be punched, the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the rotor blanking die 11, the stator-shaped die 12, the stator riveting die 13, the empty step die 14 and the stator blanking die 15 of the corresponding shapes are placed in the main die table 101 in sequence, and then the plug rod 102 is inserted into the plug slot 103, and the combined plug rod 203 is inserted into the driven gear 205 at the same time, so that multiple main die tables 101 are combined with each other, and the device is supported by the support frame 5 and the support plate 6 and transported to the bottom of the upper die 16, and the positions of the positioning plug rod 17 and the large positioning sleeve 105 and the small positioning sleeve 106 are made to correspond to each other, so that the device can replace different molds for processing according to the different shapes of the motor iron core to be processed; Step B: The material strip transport plates 7 are respectively installed at the front and rear sides of the top of each main die platform 101 by bolts, and then the material strip is transported between the material strip transport plates 7 on both sides, so that the material strip passes through the surfaces of the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the rotor blanking die 11, the stator-shaped die 12, the stator riveting die 13, the step die 14 and the stator blanking die 15 in sequence, and is punched by the punch at the bottom end of the upper die 16; Step C: When the material strip passes through the position of the rotor blanking die 11, the rotor slice will be punched out of the material strip by the punch and fall into the bottom surface of the rotor blanking die 11. At this time, the rotor slice will be blocked by the baffle plate 108 and stay inside the main die table 101. At this time, the output end will be driven to rotate by the stepper motor 302, so that it drives the rotating shaft sleeve 20 to rotate through the synchronous belt 303, thereby driving the rotor blanking die 11 to rotate through the rotating shaft sleeve 20, so that the rotor blanking die 11 drives the inner rotor slice to rotate a certain angle through the locking ring 21, and then another rotor slice is punched out by the punch and falls on the top of the first rotor slice, so that the two are stacked and riveted together, and then the rotor blanking die 11 is driven to rotate once again by the stepper motor 302, so that multiple rotor slices are stacked and riveted together in sequence, so as to avoid the situation that the rotor slice has a thickness difference on the surface of the rotor slice due to the thickness difference of the raw material when the rotor slice is stamped. If the rotor slice is directly stacked and riveted at this time, the formed rotor will tilt to one side, resulting in an imbalance between the rotor and the stator; Step D: After the rotor is formed, the electric push rod drives the baffle plate 108 to retract into the inside of the contraction groove 109, thereby opening the blanking hole position below the rotor blanking die 11, so that the formed rotor falls onto the surface of the discharge platform 4 through the blanking hole, and slides along the discharge platform 4 to the exit position, which is convenient for the staff to take. Then the electric push rod pushes the baffle plate 108 back to its original position to block the next rotor slice; Step E: When the material strip moves to the position of the stator blanking die 15, similarly to step C, each stator sheet is blocked by the baffle plate 108 and stays inside the main die table 101, and the stepper motor 302 drives the stator blanking die 15 to rotate once each time, so that the next stator sheet is stacked and riveted together in sequence, until the stator is formed, similarly to step D, the stator is transported to the exit position through the discharge table 4, so that the staff can take it conveniently; Step F: When installing the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the stator-shaped die 12, the stator riveting die 13 and the empty step die 14, the die positioning buckle 18 can be inserted into the die positioning groove 107, so as to position the rotor-shaped die 8, the rotor hole die 9, the rotor riveting die 10, the stator-shaped die 12, the stator riveting die 13 and the empty step die 14, so as to avoid the angle deviation after punching, which leads to the situation that when the rotor and stator are riveted together, the angle of the convex buckles and convex grooves on the surfaces of the rotor and stator sheets punched by the rotor riveting die 10 and the stator riveting die 13 are inconsistent after being driven and rotated by the stepping motor 302, and the riveting cannot be performed together.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An adjustable large rotary die for a motor core, comprising an upper die (16), characterized in that: Eight lower die assemblies (1) are provided below the upper die (16), and a rotor-shaped die (8), a rotor hole die (9), a rotor riveting die (10), a rotor blanking die (11), a stator-shaped die (12), a stator riveting die (13), a step die (14) and a stator blanking die (15) are movably installed in sequence inside each of the lower die assemblies (1), and a combined structure (2) is provided on one side of each of the lower die assemblies (1), and a rotary structure (3) is provided on the front side of each of the lower die assemblies (1); The lower mold assembly (1) comprises a main mold platform (101), a plug-in rod (102), a plug-in slot (103), a secondary mold platform (104), a large positioning sleeve (105), a small positioning sleeve (106) and a mold positioning slot (107); the secondary mold platform (104) is fixedly installed on both the front and rear sides of the main mold platform (101); the plug-in rod (102) is fixedly installed on one side of the secondary mold platform (104); the plug-in slot (103) is provided on the other side of the secondary mold platform (104); the plug-in rod (102) is slidably inserted into the inside of the plug-in slot (103); the large positioning sleeve (105) is fixedly installed at the center of the top of the secondary mold platform (104); the small positioning sleeves (106) are fixedly installed on both sides of the top of the secondary mold platform (104); and the mold positioning slot (107) is provided on the top surface of the main mold platform (101); The surfaces of the rotor-shaped die (8), the rotor hole die (9), the rotor riveting die (10), the stator-shaped die (12), the stator riveting die (13) and the hollow die (14) are all fixedly mounted with die positioning buckles (18), and the die positioning buckles (18) are all movably inserted into the interior of the die positioning groove (107). The bottom end of the main die table (101) on which the rotor blanking die (11) and the stator blanking die (15) are all movably mounted with a discharge table (4) facing the front side, and the bottom ends of the remaining main die tables (101) are all movably mounted with a discharge table (4) facing the rear side.

2. The adjustable large rotary die for motor core according to claim 1, characterized in that: The lower mold assembly (1) further comprises a material baffle plate (108), a contraction groove (109) and a compression spring (110); the inner wall surface of the main mold platform (101) is provided with two contraction grooves (109); a material baffle plate (108) is slidably installed inside the 10; and a plurality of compression springs (110) are movably installed between the material baffle plate (108) and the contraction groove (109).

3. The adjustable large rotary die for motor core according to claim 2, characterized in that: The combined structure (2) comprises a first combined plate (201), a second combined plate (202), a combined insertion rod (203), a handle rocker (204), a driven gear (205) and a driving gear (206); the first combined plate (201) is fixedly mounted on one side of the bottom end of the main mold platform (101); the second combined plate (202) is fixedly mounted on the other side of the bottom end of the main mold platform (101); the combined insertion rod (203) is fixedly mounted on the outer side of the second combined plate (202); the first The surface of the combined plate (201) is provided with through holes, and a driven gear (205) is movably installed inside the through holes. The outer side of the driven gear (205) is meshedly connected with a driving gear (206), and the outer end of the driving gear (206) is fixedly connected with a handle rocker (204). The handle rocker (204) passes through the surface of the first combined plate (201) and extends to the outer side of the first combined plate (201), and the combined insertion rod (203) is movably inserted into the interior of the driven gear (205).

4. The adjustable large rotary die for motor core according to claim 3, characterized in that: The combined structure (2) further comprises a spring groove (207), a compression spring (208), a limit buckle (209), a limit groove (210), an outer groove (211) of the combined plate and an inclined surface (212); the outer surface of the combined insertion rod (203) is provided with four limit grooves (210); the inner wall surface of the driven gear (205) is provided with four spring grooves (207); the inner surfaces of the spring grooves (207) are slidably mounted with limit buckles (209); the limit buckles (209) are all movably inserted into the interior of the limiting groove (210), and a compression spring (208) is movably installed between the limiting buckle (209) and the interior of the spring groove (207), and the surface of the limiting buckle (209) is provided with an inclined surface (212), and the end angle position of the side surface of the second combination plate (202) close to the combination insertion rod (203) is provided with a combination plate outer groove (211), and the handle rocker (204) is movably inserted into the interior of the combination plate outer groove (211).

5. The adjustable large rotary die for motor core according to claim 4, characterized in that: The rotary structure (3) comprises a fixed plate (301), a stepper motor (302), a synchronous belt (303) and a die table side groove (304); the front side surface of the auxiliary die table (104) close to the front side is fixedly mounted with a fixed plate (301); the front side surface of the auxiliary die table (104) mounted with the fixed plate (301) is provided with a die table side groove (304); the upper part of the fixed plate (301) located in front of the rotor blanking die (11) and the stator blanking die (15) is fixedly mounted with a stepper motor (302); the output end of the stepper motor (302) is connected to the fixed plate (301) via a coupling; the outer surface of the output end of the stepper motor (302) is movably mounted with a synchronous belt (303); the synchronous belt (303) is movably inserted into the inside of the die table side groove (304).

6. The adjustable large rotary die for motor core according to claim 5, characterized in that: The bottom ends of the rotor blanking die (11) and the stator blanking die (15) are both provided with a bearing seat (19), and the bottom ends of the bearing seats (19) are both provided with a rotating shaft sleeve (20), the rotating shaft sleeve (20) is movably inserted into the inner side of the synchronous belt (303), and the inner wall surface of the rotating shaft sleeve (20) is provided with a locking ring (21), and the locking ring (21) and the rotating shaft sleeve (20) are interference fit.

7. The adjustable large rotary die for motor core according to claim 6, characterized in that: The bottom end surfaces of the locking ring (21) and the rotating shaft sleeve (20) are in contact with the top end surface of the material baffle plate (108); an electric push rod is provided below the material baffle plate (108); and the top end surface of the output end of the electric push rod is fixedly connected to the bottom end surface of the material baffle plate (108).

8. The adjustable large rotary die for motor core according to claim 2, characterized in that: Support frames (5) are movably mounted at the bottom ends of both front and rear sides of the main mold platform (101), and support plates (6) are fixedly mounted at the top ends of both support frames (5), and both support plates (6) are in contact with the bottom surface of the main mold platform (101), and material belt transport plates (7) are mounted on both front and rear sides of the top end of the main mold platform (101) by means of bolts.

9. The adjustable large rotary die for motor core according to claim 2, characterized in that: A plurality of positioning rods (17) are fixedly mounted on the bottom surface of the upper die (16). Seven die punches are arranged at the center of the bottom of the upper die (16), and correspond to the positions of the rotor-shaped die (8), the rotor hole die (9), the rotor riveting die (10), the rotor blanking die (11), the stator-shaped die (12), the stator riveting die (13) and the stator blanking die (15), respectively. The positioning rods (17) are movably inserted into the inside of the large positioning sleeve (105) and the small positioning sleeve (106), respectively.

10. A method for using the adjustable large rotary die for motor core according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: Step A: first, according to the shape of the iron core to be punched, a rotor-shaped punch (8), a rotor hole punch (9), a rotor riveting punch (10), a rotor blanking die (11), a stator-shaped punch (12), a stator riveting punch (13), an empty step die (14) and a stator blanking die (15) of corresponding shapes are placed in the main die table (101) in sequence, and then the plug-in rod (102) is inserted into the plug-in slot (103), and at the same time, the combined plug-in rod (203) is inserted into the driven gear (205), so that multiple main die tables (101) are combined with each other, and the device is supported by the support frame (5) and the support plate (6) and transported to the bottom of the upper die (16), and the positions of the positioning plug-in rod (17) and the large positioning sleeve (105) and the small positioning sleeve (106) are made to correspond to each other, so that the device can replace different molds for processing according to the different shapes of the motor iron core to be processed; Step B: The material strip transport plates (7) are respectively installed at the front and rear sides of the top of each main die platform (101) by bolts, and then the material strip is transported between the material strip transport plates (7) on both sides, so that the material strip passes through the surfaces of the rotor-shaped die (8), the rotor hole die (9), the rotor riveting die (10), the rotor blanking die (11), the stator-shaped die (12), the stator riveting die (13), the step die (14) and the stator blanking die (15) in sequence, and is punched by the punch at the bottom end of the upper die (16); Step C: When the material strip passes through the rotor blanking die (11), the rotor slice is punched out of the material strip by the punch and falls into the bottom surface of the rotor blanking die (11). At this time, the rotor slice is blocked by the blocking plate (108) and stays inside the main die table (101). At this time, the output end is driven to rotate by the stepper motor (302), so that the rotating shaft sleeve (20) is driven to rotate through the synchronous belt (303), thereby driving the rotor blanking die (11) to rotate through the rotating shaft sleeve (20), so that the rotor blanking die (11) passes through the locking ring (2 1) driving the inner rotor sheet to rotate a certain angle, and then causing another rotor sheet to be punched out by the punch and fall onto the top of the first rotor sheet, so that the two are stacked and riveted together, and then driving the rotor blanking die (11) to rotate once again by the stepper motor (302), so that multiple rotor sheets are stacked and riveted together in sequence, so as to avoid the situation where the rotor sheets have thickness differences on the surface due to the thickness differences of the raw materials during the stamping of the rotor sheets. At this time, if the rotor sheets are directly stacked and riveted, the formed rotor will be tilted to one side, resulting in an imbalance between the rotor and the stator; Step D: After the rotor is formed, the electric push rod drives the blocking plate (108) to retract into the inside of the contraction groove (109), thereby opening the blanking hole position below the rotor blanking die (11), allowing the formed rotor to fall through the blanking hole onto the surface of the discharge platform (4) and slide along the discharge platform (4) to the exit position, making it convenient for the staff to take it. Then, the electric push rod pushes the blocking plate (108) back to its original position to block the next rotor slice; Step E: When the material strip moves to the position of the stator blanking die (15), similarly to step C, each stator sheet is blocked by the baffle plate (108) and stays inside the main die table (101), and the stepper motor (302) drives the stator blanking die (15) to rotate once each time, so that the next stator sheet is stacked and riveted together in sequence, until the stator is formed. Similar to step D, the stator is transported to the exit position through the discharge table (4) to facilitate the staff to take it; Step F: When installing the rotor-shaped die (8), the rotor hole die (9), the rotor riveting die (10), the stator-shaped die (12), the stator riveting die (13) and the empty step die (14), the die positioning buckle (18) can be inserted into the inside of the die positioning groove (107), so as to position the rotor-shaped die (8), the rotor hole die (9), the rotor riveting die (10), the stator-shaped die (12), the stator riveting die (13) and the empty step die (14), so as to avoid the angle deviation after punching, which leads to the situation that when the rotor and stator are overlapped and riveted, the angles of the convex buckles and convex grooves on the surfaces of the rotor and stator sheets punched by the rotor riveting die (10) and the stator riveting die (13) are inconsistent after being driven and rotated by the stepping motor (302), and the overlapped riveting cannot be performed.

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