Stator core and manufacturing device thereof

Abstract

The invention relates to the technical field of stator iron core manufacturing, and provides a stator iron core and a manufacturing device thereof.The stator iron core comprises a punching sheet and further comprises bent notches, the multiple bent notches are formed in the punching sheet at equal intervals, and the angle of the bent notches can enable the long-strip-shaped punching sheet to be bent into a whole circle according to requirements; a plurality of mounting holes are formed in the punching sheet at equal intervals, and the plurality of mounting holes and the plurality of bent notches are arranged in a staggered manner; and the rivets are arranged in the mounting holes respectively. The invention further provides a manufacturing device of the stator iron core, and the problems that in the prior art, due to the fact that uneven force or pressure distribution is borne by the thin steel plate to be punched in the machining process, burrs are prone to occurring in the punching process, and the production efficiency is low are solved.

Description

Technical Field

[0001] The invention relates to the technical field of stator core manufacturing, and in particular to a stator core and a manufacturing device thereof. Background Art

[0002] The stator core of the brushless generator exciter is an important component used to support, concentrate and transmit the magnetic field of the motor. In a brushless generator, the stator core is usually composed of thin and dense iron sheets. Its main function is to generate a magnetic field through magnetization, which then interacts with the main magnetic poles in the rotor to make the generator operate normally.

[0003] At present, the exciter stator of the brushless synchronous generator is usually made of whole round materials punched and stacked. Since the exciter stator is round, a large amount of whole round materials is required, resulting in low material utilization rate. In addition, compared with materials of other shapes, the cutting and bending processes of whole round materials are more complicated, the production efficiency is low, and the product manufacturing cost is increased. The cost of mass and serial production of small and medium-sized synchronous generators is high, which is not conducive to market competition.

[0004] In addition, the manufacturing process of the exciter stator involves multiple links such as stamping, welding, and painting. Among them, the stamping and bending of the whole round material are more difficult. During the stamping process, due to the thin thickness of the punching sheet, the thin steel plate to be stamped is subjected to uneven force or pressure distribution, which will cause the material to twist or deform during the stamping process, resulting in burrs and other problems during the processing process, affecting product quality. Summary of the invention

[0005] The present invention provides a stator core and a manufacturing device thereof, which solves the problem in the prior art that burrs are easily generated during stamping, resulting in low production efficiency, due to uneven force or pressure distribution on a thin steel plate to be stamped during processing.

[0006] The technical solution of the present invention is as follows: A stator core includes a punching sheet and further includes: Bending cuts, a plurality of bending cuts are provided on the punch at equal distances: The angle of the bending cut can bend the long strip of punching sheet into a full circle as required: Mounting holes, a plurality of mounting holes are provided on the punching sheet at equal distances, and the plurality of mounting holes and the plurality of curved cutouts are arranged alternately; Rivet, each of the mounting holes is provided with the rivet.

[0007] The present invention also provides a stator core manufacturing device, which is suitable for manufacturing the above-mentioned stator core, comprising a fixed frame, a feeding frame is fixedly installed on one side of the fixed frame, a cutting device is fixedly installed on the fixed frame, and further comprising: A material guide rack, the material guide rack is fixedly mounted on the fixed frame, and the material discharge end of the material guide rack is connected to the material feed end of the cutting device; A guide assembly, the guide assembly is installed at the feeding end of the guide rack and is used to guide the material; A conveying assembly, the conveying assembly is mounted on the feeding frame, the conveying assembly is located at the feeding end of the guide assembly, and is used to convey materials; A waste collection box, the waste collection box is fixedly installed at the bottom of the fixed frame; A stamping assembly is installed on the material guide frame and is used for stamping.

[0008] Based on the above scheme, the guide component includes: A guide frame, wherein the guide frame is fixedly mounted on the fixed frame, and a discharge end of the guide frame is connected to a feed end of the guide frame; A slide groove, the top of the guide frame is provided with the slide groove; Sliding racks, two of which are symmetrically and slidably mounted on the sliding groove; Guide wheels, two guide wheels are symmetrically and rotatably installed at the bottom of the two sliding frames; An arc-shaped groove, each of the guide wheels is provided with the arc-shaped groove; An offset portion is mounted on the guide frame and is used to drive the sliding frame to move.

[0009] On the basis of the above solution, the offset portion includes: A mounting frame, the mounting frame being fixedly mounted on the upper portion of the guide frame; Partition plates, two of which are symmetrically and fixedly mounted inside the mounting frame; A bidirectional screw rod is rotatably mounted between the two partitions; a first motor, the first motor being fixedly mounted on one of the partitions; Nuts, two nuts are symmetrically and threadedly sleeved on the bidirectional screw, and the two nuts are fixedly connected to the two sliding frames respectively.

[0010] On the basis of the above scheme, the conveying assembly comprises: A conveyor frame, wherein the conveyor frame is fixedly mounted on the feed frame, and a discharge end of the conveyor frame is connected to a feed end of the guide frame; A conveying roller, the conveying roller is rotatably mounted inside the conveying frame; A first electric cylinder, the first electric cylinder being fixedly mounted on the top of the conveyor frame; An upper pressing frame, on which the output end of the first electric cylinder is fixedly mounted; An upper pressing roller, the upper pressing roller is rotatably mounted on the upper pressing frame; A reciprocating transmission part, which is installed on the feeding frame and is used to drive the conveying roller to rotate; A connecting part is installed at both ends of the conveying roller and is used to control the connection between the reciprocating transmission part and the conveying roller.

[0011] On the basis of the above scheme, the reciprocating transmission part comprises: A transmission housing, wherein the transmission housing is fixedly mounted on the feed frame; A rotating disk, the rotating disk being rotatably mounted inside the transmission housing; A second motor, the second motor is fixedly mounted on the bottom of the transmission housing, and an output end of the second motor is fixedly connected to the rotating disk; A cylindrical pin, the cylindrical pin being detachably and eccentrically mounted on the rotating disk; A push rod, one end of which is rotatably connected to the cylindrical pin.

[0012] In addition to the above solutions, it also includes: A rotating drum, the rotating drum is rotatably mounted on one side of the conveying frame; A driven gear, the driven gear being fixedly mounted on the rotating cylinder; A rack, the rack being slidably mounted on the feed frame, the rack being meshed with the driven gear, and the rack being rotatably connected to the other end of the push rod; A sensor is fixedly installed inside the transmission housing.

[0013] On the basis of the above solution, the connecting part comprises: A connecting block, wherein both ends of the conveying roller are fixedly mounted with the connecting block, and the connecting block is rotatably matched with the rotating cylinder; Second electric cylinders, two second electric cylinders are symmetrically and fixedly mounted on one side of the conveying frame away from the rotating cylinder; A third electric cylinder, two of which are symmetrically and fixedly installed inside the rotating cylinder; A fixed block is fixedly mounted on the output end of each of the second electric cylinders and the output end of each of the third electric cylinders.

[0014] On the basis of the above scheme, the stamping assembly comprises: A punching machine frame, wherein the punching machine frame is fixedly mounted on the material guide frame; A lower material barrel, the lower material barrel is fixedly mounted on the bottom of the material guide frame, and the lower material barrel is located on the top of the waste collection box; A guide sleeve, the guide sleeve being fixedly mounted on the punching machine frame; A punching rod, the punching rod is slidably mounted inside the guide sleeve; A crankshaft, the crankshaft being rotatably mounted inside the stamping machine frame; A connecting rod, the connecting rod is rotatably mounted at the axial diameter position of the crankshaft, and the other end of the connecting rod is rotatably connected to the top end of the punching rod; A third motor, the third motor is fixedly mounted on the stamping machine frame, and an output end of the third motor is fixedly connected to the crankshaft; An upper punch die, wherein the upper punch die is detachably mounted on the bottom end of the punch rod; A lower punch, which is detachably mounted on the upper portion of the lower barrel and is adapted to fit the upper punch; A positioning portion is installed on the punching rod and is used to fix the material to be punched.

[0015] On the basis of the above solution, the positioning part includes: A lower pressing frame, wherein the lower pressing frame is fixedly mounted on the punching rod; Positioning grooves, two positioning grooves are symmetrically arranged inside the lower pressure frame; A positioning frame, wherein the positioning frame is slidably mounted inside the two positioning grooves; A spring is fixedly installed inside each of the positioning grooves, and the spring is fixedly connected to the positioning frame.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, the second motor drives the rotating disk to rotate, and the rotating disk drives the cylindrical pin to rotate, thereby pushing the rack to reciprocate through the action of the push rod, thereby driving the driven gear to reciprocate, and the driven gear drives the rotating cylinder to rotate. When adjusting the distance that the steel belt moves each time, it is only necessary to adjust the installation position of the cylindrical pin to adjust the distance that the rack moves, thereby adjusting the distance that the steel belt moves, which is convenient for adjusting the stamping distance.

[0017] 2. In the present invention, specifically, when the steel strip is being stamped, the stamping rod pushes the positioning frame to move through the lower press frame. Before the upper punch contacts the lower punch, the bottom of the lower press frame contacts the steel strip. At this time, the spring is compressed, thereby providing pressure through the action of the spring, thereby fixing the steel strip before stamping, reducing the possibility of deformation of the steel strip during stamping, increasing the tension of the steel strip at the stamping position, reducing the possibility of edge deformation of the steel strip at the stamping position, and improving the quality of stamping.

[0018] 3. In the present invention, in the process of processing the stator core, a punched long strip structure is used, which can be conveniently processed using a high-speed punching machine and has better production efficiency.

[0019] 4. In the present invention, the stator core is processed by a bending forming technique, which can effectively improve the utilization rate of materials and greatly reduce the production cost.

[0020] 5. In the present invention, the steel strip is intermittently conveyed by the cooperation of the conveying assembly and the guide assembly, and the distance of each movement of the steel strip is adjusted. This facilitates the stamping process of the steel strip, improves the continuity of production, and the steel strip can be further fixed during stamping by setting the stamping assembly, thereby reducing the possibility of bending of the steel strip and burrs at the position of the stamping port, improving the quality of processing, and using the punching strip structure to stack the required thickness of the stator core, and then adopting the production method of the bending forming technical solution, which greatly improves the material manufacturing utilization rate, while improving production efficiency, reducing manufacturing costs, and enhancing product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the structure of the punching sheet after bending in the present invention; Figure 2 It is a schematic diagram of the structure of the punching sheet after punching in the present invention; Figure 3 It is a schematic diagram of the structure of the punching sheet during the bending process of the present invention; Figure 4 For the present invention Figure 2 The structural diagram at A in the middle; Figure 5 For the present invention Figure 2 The structural diagram at B in the middle; Figure 6 It is a schematic diagram of the overall structure of the present invention; Figure 7 It is a schematic diagram of the overall structure from another angle in the present invention; Figure 8It is a cross-sectional structural schematic diagram of the guide assembly in the present invention; Fig. 9 It is a structural schematic diagram of the offset part in the present invention; Fig.10 It is a cross-sectional structural schematic diagram of the cooperation between the conveying assembly and the feeding frame in the present invention; Fig.11 It is a cross-sectional structural schematic diagram of the cooperation between the conveying component and the connecting part in the present invention; Fig.12 It is a cross-sectional structural schematic diagram of the cooperation between the reciprocating transmission part and the connecting part in the present invention; Fig.13 It is a schematic cross-sectional structural diagram of the stamping assembly in the present invention; Fig.14 It is a schematic cross-sectional structure diagram of the positioning part in the present invention.

[0023] In the figure: 1, fixed frame; 2, feeding frame; 3, cutting equipment; 4, material guide frame; 5, waste collection box; 6, guide frame; 7, slide; 8, sliding frame; 9, guide wheel; 10, arc groove; 11, mounting frame; 12, partition; 13, two-way screw; 14, first motor; 15, nut; 16, conveyor frame; 17, conveyor roller; 18, first electric cylinder; 19, upper pressure frame; 20, upper pressure roller; 21, transmission housing; 22, rotating disk; 23, second motor; 24, cylindrical pin; 25, push rod; 26, rotating cylinder; 27, driven gear; 28 , rack; 29, sensor; 30, connecting block; 31, second electric cylinder; 32, third electric cylinder; 33, fixing block; 34, stamping frame; 35, unloading barrel; 36, guide sleeve; 37, stamping rod; 38, crankshaft; 39, connecting rod; 40, third motor; 41, upper punch; 42, lower punch; 43, lower pressure frame; 44, positioning groove; 45, positioning frame; 46, spring; 47, welding interface one; 48, welding interface two; 49, welding interface three; 50, welding interface four; 51, bending incision; 52, punch; 53, mounting hole; 54, rivet. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1 A stator core comprises a punching sheet 52, a bent cutout 51, a mounting hole 53 and a rivet 54, wherein the punching sheet 52 is provided with a plurality of the bent cutouts 51 at equal intervals, wherein the angle of the bent cutout 51 can bend the long strip-shaped punching sheet 52 into a full circle as required, and the punching sheet 52 is provided with a plurality of the mounting holes 53 at equal intervals, wherein the plurality of the mounting holes 53 and the plurality of the bent cutouts 51 are arranged alternately, and each of the mounting holes 53 is provided with the rivet 54.

[0026] Specifically, in order to solve the manufacturing process of the exciter core, improve the material manufacturing utilization rate, improve production efficiency, reduce the manufacturing cost of the component, and enhance product competitiveness, a stator core is formed by punching sheets 52 punched from multiple layers of silicon steel or cold-rolled thin steel plates and rivets 54 fastening the punching sheets 52.

[0027] The present invention also provides an implementation method in which the manufacturing process of the stator core comprises the following steps: Step 1: Use a long silicon steel sheet or cold plate and continuously punch it with a high-speed punching machine to have the same external dimensions as the stator core of the exciter and with a cut for bending and multiple notches for welding; Step 2: The angle of the bending cut is bent into a full circle according to the exciter punching sheet; Step 3: Stack the punched sheets into the required thickness of the stator core of the exciter, and then weld the welding gaps up and down to make the core an integral long structural part; Step 4: bend the long strip of excitation stator core into a circle and weld a plurality of notches respectively to tighten the core into shape; Step 5: Finally, rivets are inserted into the rivet holes for riveting and fastening to obtain the stator core.

[0028] In actual production, Figures 10 to 14 As shown, a long silicon steel sheet or cold plate is used to continuously punch out a high-speed punching machine to have the same external dimensions as the stator core of the exciter and with a cut for bending and a notch for welding, such as Fig.13 , Fig.14 As shown, it includes welding interface 1 47, welding interface 2 48, welding interface 3 49 and welding interface 4 50. The punched sheets 52 are stacked into the required thickness of the stator core of the exciter, and then the welding interface 1 47 is welded up and down to make the core an integral long structural member. Due to the setting of the bending cut 51, the angle of the bending cut 51 can be bent into a full circle according to the exciter punching sheet 52, and the welding interface 2 48, welding interface 3 49 and welding interface 4 50 are welded to tighten the core into shape, and then the rivet 54 is inserted into the mounting hole 53 to tighten the stator as a whole, and the manufacture of the stator core can be completed.

[0029] Embodiment 2 like Figures 1 to 14 As shown, further, this embodiment also proposes a stator core manufacturing device, which is suitable for manufacturing the above-mentioned stator core, including a fixed frame 1, a feed frame 2 is fixedly installed on one side of the fixed frame 1, a cutting device 3 is fixedly installed on the fixed frame 1, and also includes a guide frame 4, a guide component, a conveying component, a waste collection box 5 and a stamping component. The guide frame 4 is fixedly installed on the fixed frame 1, and the discharge end of the guide frame 4 is connected to the feed end of the cutting device 3. The guide component is installed at the feed end of the guide frame 4 for guiding the waste material. The guide assembly includes a guide frame 6, a slide groove 7, a sliding frame 8, a guide wheel 9, an arc groove 10 and an offset portion. The guide frame 6 is fixedly installed on the fixed frame 1, and the discharging end of the guide frame 6 is connected with the feeding end of the guide frame 4. A slide groove 7 is provided on the top of the guide frame 6, and two sliding frames 8 are symmetrically and slidably installed on the slide groove 7. Two guide wheels 9 are symmetrically and rotatably installed at the bottom of the two sliding frames 8. Each guide wheel 9 is provided with an arc groove 10. The offset portion is installed on the guide frame 6 to drive the sliding frame 8 to move.

[0030] Specifically, when processing the stator core of the exciter, first select a steel strip of appropriate size according to the size of the core to be processed, first feed the end of the steel strip into the conveying assembly, start the conveying assembly, and the conveying assembly drives the steel strip to move until the steel strip enters the guide frame 6. Under the action of the offset part, the two sliding frames 8 move in the opposite direction, thereby driving the arc grooves 10 on the corresponding guide wheels 9 to contact the two edges of the steel strip, thereby achieving the purpose of guiding the moving direction of the steel strip. After the steel strip moves to the guide frame 4, the stamping assembly can be started to start stamping processing on it, and the steel strip is continuously stamped into the same size as the stator core of the exciter. Like this, it has incisions for bending and notches for welding. As the stamping continues, the stamped steel strip will be moved out from the discharge end of the guide rack 4, and then enter the cutting device 3. When the punched sheet 52 punched out of the steel strip is moved out from the discharge end of the cutting device 3, the required length is determined, and the punched sheet 52 can be cut. Then the cut punched sheets 52 are collected, and the punched sheets 52 are stacked into the required thickness of the stator core of the exciter, and then welded to make the core an integral long strip structure, and then bent into a circle and fixed, the processing of the excitation stator core can be completed.

[0031] It should be noted that the steel strips mentioned in the above embodiments are preferably long strips of silicon steel sheets or cold-rolled thin steel plates.

[0032] As mentioned above, the offset part includes a mounting frame 11, a partition 12, a bidirectional screw 13, a first motor 14 and a nut 15. The mounting frame 11 is fixedly mounted on the upper part of the guide frame 6. Two partitions 12 are symmetrically and fixedly mounted inside the mounting frame 11. A bidirectional screw 13 is rotatably mounted between the two partitions 12. The first motor 14 is fixedly mounted on one of the partitions 12. Two nuts 15 are symmetrically and threadedly sleeved on the bidirectional screw 13. The two nuts 15 are fixedly connected to the two sliding frames 8 respectively.

[0033] Specifically, when driving the two sliding frames 8 to move, the first motor 14 is started, the first motor 14 drives the bidirectional screw 13 to rotate, and the bidirectional screw 13 drives the two nuts 15 to move at the same time, thereby driving the two sliding frames 8 to move in the opposite direction at the same time.

[0034] The conveying assembly is installed on the feed frame 2. The conveying assembly is located at the feed end of the guide assembly and is used to convey materials. The conveying assembly includes a conveying frame 16, a conveying roller 17, a first electric cylinder 18, an upper pressure frame 19, an upper pressure roller 20, a reciprocating transmission part and a connecting part. The conveying frame 16 is fixedly installed on the feed frame 2, and the discharge end of the conveying frame 16 is connected to the feed end of the guide frame 6. The conveying roller 17 is rotatably installed inside the conveying frame 16. The first electric cylinder 18 is fixedly installed on the top of the conveying frame 16, and the upper pressure frame 19 is fixedly installed on the output end of the first electric cylinder 18. The upper pressure roller 20 is rotatably installed on the upper pressure frame 19. The reciprocating transmission part is installed on the feed frame 2, and is used to drive the conveying roller 17 to rotate. Connecting parts are installed at both ends of the conveying roller 17 to control the connection between the reciprocating transmission part and the conveying roller 17.

[0035] Specifically, when the conveyor steel strip is being processed, the steel strip to be punched is first placed between the conveyor roller 17 and the upper pressure roller 20, and the first electric cylinder 18 is started. The first electric cylinder 18 pushes the upper pressure frame 19 to move, and the upper pressure frame 19 pushes the upper pressure roller 20 to move until the upper pressure roller 20 abuts against the upper side of the steel strip, thereby clamping the steel strip through cooperation with the conveyor roller 17, and then the reciprocating transmission part is started. With the cooperation of the connecting part, the conveyor roller 17 can be driven to rotate from time to time, and the distance the steel strip moves during each rotation is adjusted, thereby facilitating the punching of the steel strip.

[0036] The above-mentioned reciprocating transmission part includes a transmission housing 21, a rotating disk 22, a second motor 23, a cylindrical pin 24 and a pushing rod 25. The transmission housing 21 is fixedly mounted on the feed frame 2, the rotating disk 22 is rotatably mounted inside the transmission housing 21, the second motor 23 is fixedly mounted at the bottom of the transmission housing 21, the output end of the second motor 23 is fixedly connected to the rotating disk 22, the rotating disk 22 is detachably eccentrically mounted with a cylindrical pin 24, one end of the pushing rod 25 is rotatably connected to the cylindrical pin 24, and also includes a rotating cylinder 26, a driven gear 27, a rack 28 and a sensor 29. The rotating cylinder 26 is rotatably mounted on one side of the conveyor frame 16, the rotating cylinder 26 is fixedly mounted with a driven gear 27, the rack 28 is slidably mounted on the feed frame 2, the rack 28 is meshed with the driven gear 27, the rack 28 is rotatably connected to the other end of the pushing rod 25, and the sensor 29 is fixedly mounted inside the transmission housing 21.

[0037] Specifically, when the conveying roller 17 is driven to rotate, the second motor 23 is started, and the second motor 23 drives the rotating disk 22 to rotate, and the rotating disk 22 drives the cylindrical pin 24 to rotate, so that through the action of the push rod 25, the rack 28 is pushed to move back and forth, thereby driving the driven gear 27 to rotate back and forth, and the driven gear 27 drives the rotating cylinder 26 to rotate, and then through the setting of the connecting part, the conveying roller 17 is driven to rotate, thereby driving the steel belt to move.

[0038] It should be added that when adjusting the distance that the steel belt moves each time, it is only necessary to adjust the installation position of the cylindrical pin 24 to adjust the distance that the rack 28 moves, thereby adjusting the distance that the steel belt moves. The position of the cylindrical pin 24 is detected by the setting of the sensor 29. When the rotating disk 22 drives the rack 28 to move forward through the setting of the cylindrical pin 24 and the push rod 25, the sensor 29 receives the signal and immediately fixes the position of the conveying roller 17, so that the connecting block 30 and the rotating cylinder 26 rotate relative to each other. When the rack 28 moves backward, the relative position of the conveying roller 17 and the rotating cylinder 26 is immediately fixed, and the fixed connection with the conveying frame 16 is disconnected at the same time, so that the driven gear 27 can drive the connecting block 30 to rotate through the rotating cylinder 26, and then drive the conveying roller 17 to rotate, which can drive the steel belt to move forward.

[0039] As mentioned above, the connecting part includes a connecting block 30, a second electric cylinder 31, a third electric cylinder 32 and a fixed block 33. The connecting blocks 30 are fixedly installed at both ends of the conveying roller 17. The connecting blocks 30 are rotatably matched with the rotating cylinder 26. Two second electric cylinders 31 are symmetrically and fixedly installed on the side of the conveying frame 16 away from the rotating cylinder 26. Two third electric cylinders 32 are symmetrically and fixedly installed inside the rotating cylinder 26. The output end of each second electric cylinder 31 and the output end of each third electric cylinder 32 are fixedly installed with a fixed block 33.

[0040] Specifically, when it is necessary to fix the position of the conveyor roller 17 to prevent the conveyor roller 17 from rotating, the second electric cylinder 31 is started. The second electric cylinder 31 fixes one of the connecting blocks 30 through the setting of the fixing block 33, thereby fixing the relative position of the conveyor roller 17 and the conveyor frame 16, and the conveying of the steel belt can be stopped. During this period, stamping operations can be performed. When it is necessary to convey the steel belt, the second electric cylinder 31 is quickly retracted, and the third electric cylinder 32 is started at the same time. Then, through the setting of the fixing block 33, the relative position of the connecting block 30 and the rotating shell is fixed, thereby driving the conveyor roller 17 to rotate.

[0041] It should be added that the sensor 29 is provided with a signal transmitter, and the second electric cylinder 31 and the third electric cylinder 32 are also provided with a signal receiver matching the signal transmitter, so as to facilitate the control of the rotation of the conveying roller 17 .

[0042] The waste collection box 5 is fixedly mounted on the bottom of the fixed frame 1, and the stamping assembly is mounted on the guide frame 4 for stamping. The stamping assembly includes a stamping frame 34, a lower barrel 35, a guide sleeve 36, a stamping rod 37, a crankshaft 38, a connecting rod 39, a third motor 40, an upper punch 41, a lower punch 42 and a positioning part. The stamping frame 34 is fixedly mounted on the guide frame 4, and the lower barrel 35 is fixedly mounted on the bottom of the guide frame 4. The lower barrel 35 is located at the top of the waste collection box 5. A guide sleeve 36 is fixedly mounted on the stamping frame 34, and the stamping rod 37 is slidably mounted on the guide sleeve. Inside the sleeve 36, the crankshaft 38 is rotatably installed inside the stamping machine frame 34, the connecting rod 39 is rotatably installed at the journal position of the crankshaft 38, and the other end of the connecting rod 39 is rotatably connected to the top end of the stamping rod 37. The third motor 40 is fixedly installed on the stamping machine frame 34, and the output end of the third motor 40 is fixedly connected to the crankshaft 38. The upper punch 41 is detachably installed on the bottom end of the stamping rod 37, and the lower punch 42 is detachably installed on the upper part of the lower barrel 35. The lower punch 42 is adapted to the upper punch 41, and the positioning portion is installed on the stamping rod 37 for fixing the material to be stamped.

[0043] Specifically, when stamping the steel strip, first install the appropriate upper punch die 41 and lower punch die 42 according to the actual work requirements, and then start the third motor 40. The third motor 40 drives the crankshaft 38 to rotate. The crankshaft 38 drives the stamping rod 37 to reciprocate in the guide sleeve 36 through the setting of the connecting rod 39, so that the upper punch die 41 at the top of the stamping rod 37 cooperates with the lower punch die 42 on the upper part of the lower barrel 35 to stamp the steel strip, and the stamped waste will pass through the setting of the lower barrel 35 and fall into the waste collection box 5.

[0044] As mentioned above, the positioning part includes a lower pressure frame 43, a positioning groove 44, a positioning frame 45 and a spring 46. The lower pressure frame 43 is fixedly installed on the punching rod 37. Two positioning grooves 44 are symmetrically opened inside the lower pressure frame 43. The positioning frames 45 are slidably installed inside the two positioning grooves 44. A spring 46 is fixedly installed inside each positioning groove 44, and the spring 46 is fixedly connected to the positioning frame 45.

[0045] Specifically, when the steel strip is stamped, the stamping rod 37 pushes the lower press frame 43 to move, and the lower press frame 43 pushes the positioning frame 45 to move. Before the upper punch 41 contacts the lower punch 42, the bottom of the lower press frame 43 contacts the steel strip. At this time, the spring 46 is compressed, thereby providing pressure through the action of the spring 46 to fix the steel strip before stamping, reducing the possibility of deformation of the steel strip during stamping, increasing the tension of the steel strip at the stamping position, reducing the possibility of edge deformation of the steel strip at the stamping position, and improving the quality of stamping.

[0046] To sum up, when processing the stator core of the exciter, first select a steel strip of appropriate size according to the size of the core to be processed, first feed the end of the steel strip between the conveyor roller 17 and the upper pressure roller 20, start the first electric cylinder 18, the first electric cylinder 18 pushes the upper pressure frame 19 to move, and the upper pressure frame 19 pushes the upper pressure roller 20 to move until the upper pressure roller 20 abuts against the upper side of the steel strip, thereby clamping the steel strip through cooperation with the conveyor roller 17, and then it can start to be conveyed.

[0047] The second motor 23 is started, and the second motor 23 drives the rotating disk 22 to rotate, and the rotating disk 22 drives the cylindrical pin 24 to rotate, so that the rack 28 is pushed to move back and forth through the action of the push rod 25, thereby driving the driven gear 27 to reciprocate, and the driven gear 27 drives the rotating cylinder 26 to rotate. When the position of the conveying roller 17 needs to be fixed to prevent the conveying roller 17 from rotating, the second electric cylinder 31 is started, and the second electric cylinder 31 fixes one of the connecting blocks 30 through the setting of the fixing block 33, thereby fixing the relative position of the conveying roller 17 and the conveying frame 16, and the conveying of the steel strip can be stopped. During this period, the stamping operation can be performed. When the steel strip needs to be conveyed, the second electric cylinder 31 is quickly retracted, and the third electric cylinder 32 is started at the same time, and then the relative position of the connecting block 30 and the rotating shell is fixed through the setting of the fixing block 33, thereby driving the conveying roller 17 to rotate, thereby controlling the rotation of the conveying roller 17, and realizing the driving of the conveying roller 17 to rotate in a time-stopping manner, which is convenient for stamping the steel strip.

[0048] When the steel belt enters the guide frame 6, the first motor 14 is started, and the first motor 14 drives the bidirectional screw 13 to rotate, and the bidirectional screw 13 drives the two nuts 15 to move at the same time, thereby driving the two sliding frames 8 to move in the opposite direction at the same time, thereby driving the corresponding arc grooves 10 on the guide wheels 9 to contact the two edges of the steel belt, thereby achieving the purpose of guiding the moving direction of the steel belt, until the steel belt moves to the guide frame 4, it can start stamping processing.

[0049] When stamping the steel strip, first install the appropriate upper punch die 41 and lower punch die 42 according to the actual work requirements, then start the third motor 40, the third motor 40 drives the crankshaft 38 to rotate, the crankshaft 38 drives the punch rod 37 to reciprocate in the guide sleeve 36 through the setting of the connecting rod 39, when the punch rod 37 pushes the lower press frame 43 to move, the lower press frame 43 pushes the positioning frame 45 to move, before the upper punch die 41 contacts the lower punch die 42, the bottom of the lower press frame 43 contacts the steel strip, and the spring 46 is compressed at this time, thereby providing pressure through the action of the spring 46, so that the steel strip is stamped before stamping. The steel strip is fixed, which reduces the possibility of deformation of the steel strip during stamping, increases the tension of the steel strip at the stamping position, reduces the possibility of edge deformation of the steel strip at the stamping position, and improves the quality of stamping. The steel strip is stamped by the upper punch 41 on the top of the stamping rod 37 and the lower punch 42 on the upper part of the lower barrel 35. The stamped waste will pass through the setting of the lower barrel 35 and fall into the waste collection box 5. As the stamping continues, the continuous stamping is the same as the external size of the stator core of the exciter, and has a cut for bending and a notch for welding. As the stamping continues, the stamped steel strip will be removed from the discharge end of the guide rack 4.

[0050] The punched steel strip enters the interior of the cutting device 3. When the punched sheet 52 punched out of the steel strip is removed from the discharge end of the cutting device 3, the required length is determined and the punched sheet 52 is cut. The cut punched sheets 52 are then collected and stacked into the required thickness of the stator core of the exciter. The sheets are then welded to make the core an integral long structural member. The sheet is then bent into a circle and fixed to complete the processing of the excitation stator core.

[0051] Embodiment 3 Furthermore, this embodiment also provides another method for manufacturing a stator core, that is, a method for manufacturing the stator core in the first embodiment by using the second embodiment, which specifically includes the following steps: The first step is to feed the material by feeding the end of the steel strip between the conveying roller 17 and the upper pressure roller 20.

[0052] The second step is to clamp the material. Start the first electric cylinder 18, which pushes the upper pressure frame 19 to move. The upper pressure frame 19 pushes the upper pressure roller 20 to move until the upper pressure roller 20 abuts against the upper side of the steel strip, thereby clamping the steel strip through cooperation with the conveying roller 17.

[0053] The third step is driving, starting the second motor 23, the second motor 23 drives the rotating disk 22 to rotate, and the rotating disk 22 drives the cylindrical pin 24 to rotate.

[0054] Step 4: displacement, the push rod 25 pushes the rack 28 to move back and forth, thereby driving the driven gear 27 to rotate back and forth, and the driven gear 27 drives the rotating cylinder 26 to rotate; The fifth step is to stop feeding. When the conveying roller 17 needs to be fixed at a position to prevent the conveying roller 17 from rotating, the second electric cylinder 31 is started. The second electric cylinder 31 fixes one of the connecting blocks 30 through the setting of the fixing block 33, thereby fixing the relative position of the conveying roller 17 and the conveying frame 16, and the conveying of the steel belt can be stopped. The sixth step is guiding. Start the first motor 14 to drive the bidirectional screw 13 to rotate. The bidirectional screw 13 simultaneously drives the two nuts 15 to move, thereby simultaneously driving the two sliding frames 8 to move in the opposite direction, thereby driving the corresponding arc grooves 10 on the guide wheels 9 to contact the two edges of the steel belt, thereby achieving the purpose of guiding the moving direction of the steel belt.

[0055] Step 7: Install the upper punch 41 and the lower punch 42; The eighth step is to drive and start the third motor 40 . The third motor 40 drives the crankshaft 38 to rotate. The crankshaft 38 drives the punching rod 37 to reciprocate in the guide sleeve 36 through the setting of the connecting rod 39 .

[0056] The ninth step is positioning. When the punch rod 37 pushes the lower press frame 43 to move, the lower press frame 43 pushes the positioning frame 45 to move. Before the upper punch 41 contacts the lower punch 42, the bottom of the lower press frame 43 contacts the steel strip. At this time, the spring 46 is compressed, thereby providing pressure through the action of the spring 46 to fix the steel strip before stamping, reducing the possibility of deformation of the steel strip during stamping, increasing the tension of the steel strip at the stamping position, reducing the possibility of edge deformation of the steel strip at the stamping position, and improving the quality of stamping.

[0057] The tenth step is punching, in which the upper punch die 41 at the top of the punch rod 37 cooperates with the lower punch die 42 at the upper part of the lower barrel 35 to punch the steel strip.

[0058] The eleventh step is waste recycling. The punched waste will fall into the waste collection box 5 through the setting of the discharge barrel 35. As the punching continues, the continuous punching is the same as the stator core of the exciter, with incisions for bending and notches for welding.

[0059] Step 12, continue loading. When the steel strip needs to be conveyed, quickly retract the second electric cylinder 31, and start the third electric cylinder 32 at the same time. Then, through the setting of the fixing block 33, fix the relative position of the connecting block 30 and the rotating shell, thereby driving the conveying roller 17 to rotate, thereby controlling the rotation of the conveying roller 17, and realizing the driving of the conveying roller 17 to rotate from time to time, which is convenient for stamping the steel strip.

[0060] Step 13: Discharging: As the stamping process continues, the stamped steel strip will be moved out from the discharging end of the guide frame 4.

[0061] The fourteenth step is cutting. The punched steel strip enters the cutting device 3. When the punched sheet 52 punched out of the steel strip is removed from the discharge end of the cutting device 3, the required length is determined and the punched sheet 52 is cut.

[0062] The fifteenth step is forming, so that the punching sheet 52 becomes an integral long strip structure, and the long strip structure is bent into a full circle according to the shape of the exciter stator, and the long strip structure bent into a full circle is welded to tighten the core into shape and tighten the stator as a whole.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator core, comprising a punching sheet (52), and further comprising: Curved cuts, a plurality of curved cuts are provided at equal distances on the punching sheet (52): The angle of the curved cutout (51) can bend the long strip-shaped punching sheet (52) into a full circle as required: Mounting holes, a plurality of mounting holes (53) are provided on the punching sheet (52) at equal intervals, and the plurality of mounting holes (53) and the plurality of curved cutouts are arranged alternately; A rivet (54), wherein each of the mounting holes (53) is provided with the rivet (54).

2. A stator core manufacturing device, suitable for a stator core according to claim 1, comprising a fixed frame (1), a feeding frame (2) is fixedly mounted on one side of the fixed frame (1), and a cutting device (3) is fixedly mounted on the fixed frame (1), characterized in that: Also includes: A material guide rack (4), the material guide rack (4) being fixedly mounted on the fixed frame (1), and the material discharge end of the material guide rack (4) being connected to the material feed end of the cutting device (3); A guide assembly, the guide assembly being mounted on the feed end of the material guide frame (4) and being used for guiding the material; A conveying assembly, the conveying assembly being mounted on the feed frame (2), the conveying assembly being located at the feed end of the guide assembly and being used for conveying materials; A waste collection box (5), the waste collection box (5) being fixedly mounted on the bottom of the fixed frame (1); A stamping assembly, the stamping assembly is mounted on the material guide frame (4) and is used for stamping.

3. A stator core manufacturing device according to claim 2, characterized in that: The guide components include: A guide frame (6), the guide frame (6) being fixedly mounted on the fixed frame (1), the discharge end of the guide frame (6) being in communication with the feed end of the guide frame (4); A slide groove (7), wherein the slide groove (7) is provided on the top of the guide frame (6); A sliding frame (8), two sliding frames (8) are symmetrically and slidably mounted on the sliding groove (7); Guide wheels (9), the two guide wheels (9) being symmetrically and rotatably mounted on the bottom of the two sliding frames (8); An arc-shaped groove (10), each of the guide wheels (9) being provided with the arc-shaped groove (10); An offset portion, the offset portion being mounted on the guide frame (6) and being used to drive the sliding frame (8) to move.

4. A stator core manufacturing device according to claim 3, characterized in that: The offset portion comprises: A mounting frame (11), the mounting frame (11) being fixedly mounted on an upper portion of the guide frame (6); A partition (12), wherein two partitions (12) are symmetrically and fixedly mounted inside the mounting frame (11); A bidirectional screw (13), wherein the bidirectional screw (13) is rotatably mounted between the two partitions (12); a first motor (14), the first motor (14) being fixedly mounted on one of the partitions (12); Nuts (15), two nuts (15) are symmetrically and threadedly sleeved on the bidirectional screw rod (13), and the two nuts (15) are respectively fixedly connected to the two sliding frames (8).

5. The stator core manufacturing device according to claim 4, characterized in that: The conveying assembly comprises: A conveying frame (16), wherein the conveying frame (16) is fixedly mounted on the feeding frame (2), and the discharge end of the conveying frame (16) is connected to the feed end of the guide frame (6); A conveying roller (17), the conveying roller (17) being rotatably mounted inside the conveying frame (16); A first electric cylinder (18), the first electric cylinder (18) being fixedly mounted on the top of the conveyor frame (16); An upper pressing frame (19), the output end of the first electric cylinder (18) being fixedly mounted with the upper pressing frame (19); An upper pressing roller (20), the upper pressing frame (19) being rotatably mounted with the upper pressing roller (20); A reciprocating transmission part, the reciprocating transmission part being mounted on the feed frame (2) and being used to drive the conveying roller (17) to rotate; A connecting part is installed at both ends of the conveying roller (17) and is used to control the connection between the reciprocating transmission part and the conveying roller (17).

6. The stator core manufacturing device according to claim 5, characterized in that: The reciprocating transmission part comprises: A transmission housing (21), wherein the transmission housing (21) is fixedly mounted on the feed frame (2); A rotating disk (22), the rotating disk (22) being rotatably mounted inside the transmission housing (21); A second motor (23), the second motor (23) being fixedly mounted on the bottom of the transmission housing (21), and an output end of the second motor (23) being fixedly connected to the rotating disk (22); A cylindrical pin (24), the cylindrical pin (24) being detachably and eccentrically mounted on the rotating disk (22); A push rod (25), one end of which is rotatably connected to the cylindrical pin (24).

7. A stator core manufacturing device according to claim 6, characterized in that: Also includes: A rotating cylinder (26), wherein the rotating cylinder (26) is rotatably mounted on one side of the conveying frame (16); A driven gear (27), the driven gear (27) being fixedly mounted on the rotating cylinder (26); A rack (28), the rack (28) being slidably mounted on the feed frame (2), the rack (28) being meshed with the driven gear (27), and the rack (28) being rotatably connected to the other end of the push rod (25); A sensor (29), wherein the sensor (29) is fixedly mounted inside the transmission housing (21).

8. The stator core manufacturing device according to claim 7, characterized in that: The connecting portion comprises: A connecting block (30), the connecting blocks (30) being fixedly mounted on both ends of the conveying roller (17), the connecting block (30) being rotatably matched with the rotating cylinder (26); A second electric cylinder (31), two of which are symmetrically and fixedly mounted on one side of the conveying frame (16) away from the rotating cylinder (26); A third electric cylinder (32), two third electric cylinders (32) being symmetrically and fixedly mounted inside the rotating cylinder (26); A fixing block (33) is fixedly mounted on the output end of each of the second electric cylinders (31) and the output end of each of the third electric cylinders (32).

9. The stator core manufacturing device according to claim 8, characterized in that: The stamping assembly comprises: A punching machine frame (34), the punching machine frame (34) being fixedly mounted on the material guide frame (4); A material lowering barrel (35), the material lowering barrel (35) being fixedly mounted on the bottom of the material guide frame (4), and the material lowering barrel (35) being located on the top of the waste material collecting box (5); A guide sleeve (36), the guide sleeve (36) being fixedly mounted on the punching machine frame (34); A punching rod (37), the punching rod (37) being slidably mounted inside the guide sleeve (36); A crankshaft (38), the crankshaft (38) being rotatably mounted inside the punching machine frame (34); A connecting rod (39), the connecting rod (39) being rotatably mounted on the journal of the crankshaft (38), and the other end of the connecting rod (39) being rotatably connected to the top end of the punching rod (37); a third motor (40), the third motor (40) being fixedly mounted on the stamping machine frame (34), the output end of the third motor (40) being fixedly connected to the crankshaft (38); An upper punch (41), the upper punch (41) being detachably mounted on the bottom end of the punch rod (37); A lower punch (42), the lower punch (42) being detachably mounted on the upper portion of the lower barrel (35), the lower punch (42) being adapted to fit the upper punch (41); A positioning portion, the positioning portion is mounted on the punching rod (37) and is used to fix the material to be punched.

10. The stator core manufacturing device according to claim 9, characterized in that: The positioning portion comprises: A lower pressing frame (43), wherein the lower pressing frame (43) is fixedly mounted on the punching rod (37); Positioning grooves (44), two positioning grooves (44) are symmetrically arranged inside the lower pressing frame (43); A positioning frame (45), wherein the positioning frame (45) is slidably mounted inside the two positioning grooves (44); A spring (46), wherein each of the positioning grooves (44) has a spring (46) fixedly mounted therein, and the spring (46) is fixedly connected to the positioning frame (45).

Images