A stamping and forming equipment for automobile motor core

Abstract

The invention relates to the field of iron core stamping technology, in particular to an automobile motor iron core stamping forming device; the device comprises a lower die seat, and a support column is fixedly installed on the upper end of the lower die seat; the invention provides a grinding groove, so that when the silicon steel strip passes through the grinding groove to the third and fourth stations, the polishing cloth in the grinding groove can grind and remove the burrs on the lower end surface of the silicon steel strip, thereby preventing the silicon steel strip from bringing the burrs at the lower end into the third and fourth stations, and preventing the burrs from falling on the surfaces of the rotor punching sheets and stator punching sheets in the third and fourth stations, on the one hand, preventing the stress concentration at the position of the burr during the stacking riveting process, preventing the rotor punching sheets and the stator punching sheets from being mechanically damaged, and improving the stacking riveting quality of the stamped rotor punching sheets and the stator punching sheets; on the other hand, preventing the burrs from falling into the riveting groove, so as to ensure that the riveting points of the adjacent rotor punching sheets or stator punching sheets can be effectively inserted into the riveting groove, thereby improving the rotor punching sheets or the stator punching sheets and the riveting strength.

Description

Technical Field

[0001] The invention relates to the technical field of iron core stamping, in particular to an automobile motor iron core stamping forming device. Background Art

[0002] As the core component of the motor, the iron core (magnetic core) plays a pivotal role in the entire motor. It is used to increase the magnetic flux of the inductor coil and achieve the maximum conversion of electromagnetic power. The iron core is usually composed of a stator and a rotor. The stator is usually a non-rotating part, and the rotor is usually embedded in the stator. Nowadays, the production of iron cores mostly uses stamping technology to punch iron core parts, that is, when the punching sheets are progressively stamped, the first station punches the key shaft hole, the second station punches the stator slot hole and the rotor slot hole, the third station separates the rotor punching sheet, and the fourth station separates the stator punching sheet. Then, the punching sheets of the iron core are stacked by riveting and welding to obtain the required stator and rotor.

[0003] The stack riveting fixation is to stamp the stack riveting points on the core punching sheets. When stacking, the two adjacent core punching sheets are connected to each other through the stack riveting points on them. Compared with welding fixation, stack riveting fixation is usually simpler and faster than welding fixation, and does not require complex welding equipment and processes, so it is more efficient in the assembly process. In addition, the riveting equipment is relatively simple and the cost is usually low.

[0004] However, during the punching process, the silicon steel strip is continuously conveyed, and there are burrs on the side of the punched silicon steel strip close to the die. When the silicon steel strip slides on the lower die seat, the burrs will slide and rub against the upper surface of the lower die seat, causing the burrs to fall off under the action of friction. The continuously conveyed silicon steel strip will drive the fallen burrs to move to the third and fourth stations, causing the burrs to fall on the surfaces of the rotor and stator punchings in the third and fourth stations. On the one hand, during the stacking riveting process, stress concentration will occur at the location of the burrs, thereby causing mechanical damage to the rotor and stator punchings. On the other hand, if the burrs fall into the riveting grooves of the rotor and stator punchings, the riveting points of the upper rotor and stator punchings cannot be effectively inserted into the riveting grooves, thereby affecting the riveting strength of the rotor and stator punchings.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes an automobile motor core stamping forming device to solve the above technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the present invention proposes a stamping and forming equipment for automobile motor cores. The present invention arranges a grinding groove so that when the silicon steel strip passes through the grinding groove to the third and fourth stations, the polishing cloth in the grinding groove can grind off the burrs on the lower end surface of the silicon steel strip, thereby preventing the silicon steel strip from bringing the burrs at the lower end into the third and fourth stations, and preventing the burrs from falling on the surfaces of the rotor punchings and stator punchings in the third and fourth stations. On the one hand, stress concentration at the location of the burr is prevented during the stacking riveting process, and mechanical damage to the rotor punchings and stator punchings is prevented, thereby improving the stacking riveting quality of the stamped rotor punchings and stator punchings; on the other hand, the burrs are prevented from falling into the riveting grooves, so as to ensure that the riveting points of adjacent rotor punchings or stator punchings can be effectively inserted into the riveting grooves, thereby improving the rotor punchings or stator punchings and riveting strength.

[0007] The technical solution adopted by the present invention to solve the technical problem is: an automobile motor core stamping forming device described in the present invention comprises:

[0008] A lower die base, wherein a support column is fixedly mounted on the upper end of the lower die base; a frame is fixedly mounted on the upper end of the support column; an upper die is arranged between the lower die base and the frame; the upper die is fixedly connected to the frame through a hydraulic cylinder; two overlapping grooves and two stamping grooves are arranged on the upper end of the lower die base; a dust exhaust port connected to the stamping grooves is arranged inside the lower die base; a conveyor belt is installed in the dust exhaust port; a driving motor is installed inside the lower die base; the driving motor is used to drive the conveyor belt to rotate; a discharge port connected to the overlapping groove is arranged on one side of the lower die base; a pushing plate is installed in the discharge port; the pushing plate is connected to the inner wall of the discharge port through an electric push rod;

[0009] A grinding groove, in which two rollers are rotatably connected; polishing cloths are wound on the surfaces of the two rollers; there are two grinding grooves; the two grinding grooves are respectively located on one side of the two overlapping grooves close to the stamping groove; a overlapping plate is slidingly and sealably connected in the overlapping groove; a through groove is provided on the surface of the overlapping plate; the overlapping plate is connected to the bottom of the overlapping groove by a hydraulic push rod; a push rod matching the through groove is fixedly connected to the bottom of the overlapping groove; there are two grinding grooves; the grinding groove close to the stamping groove is connected to the dust exhaust port; the side wall of the grinding groove away from the stamping groove is provided with an inclined groove connected to the outside world; the drive motor is also used to drive the rollers to rotate.

[0010] Preferably, a pressure plate is installed at the upper end of the upper mold base; a mounting plate is fixedly installed in the grinding groove; the mounting plate is located between two rollers; a mounting groove is opened at the upper end of the mounting plate; a support plate is slidably connected in the mounting groove; a pushing unit is installed in the mounting groove; the pushing unit is used to push the support plate to extend out of the mounting groove.

[0011] Preferably, a cleaning rod is fixedly connected in the grinding groove; and a sponge cover is provided on the surface of the cleaning rod.

[0012] Preferably, a circular groove is provided at the upper end of the lower die base; a connecting rod is slidably connected in the circular groove; the end of the connecting rod away from the circular groove is fixedly connected to the pressure plate; a slot is provided on the surface of the connecting rod; an insert rod is slidably and sealably connected in the slot; an oil storage tank connected to the slot is provided on the mounting plate; a pull rod is slidably and sealably connected in the oil storage tank; the pull rod is connected to the bottom of the oil storage tank via a reset spring.

[0013] Preferably, a slide plate is provided above the support plate; a groove is provided at the lower end of the slide plate; the support plate is slidably connected in the groove; a connecting spring is provided in the groove; a pressure sensor is installed at one end of the support plate away from the mounting groove; one end of the connecting spring is connected to the pressure sensor, and the other end is connected to the bottom of the groove.

[0014] Preferably, the pushing unit comprises an electro-hydraulic push rod; one end of the electro-hydraulic push rod is fixedly mounted on the bottom of the mounting groove, and the other end is connected to the support plate.

[0015] Preferably, the pushing unit includes a worm wheel and a worm; the worm wheel is rotatably connected to the bottom of the mounting groove; the worm is meshed with the worm wheel; both ends of the worm are rotatably connected to the groove wall of the grinding groove; the worm is connected to the driving motor through a transmission unit; a screw is fixedly connected to the lower end of the support plate; and the screw and the worm wheel are helically connected.

[0016] Preferably, the transmission unit includes a transmission belt; the transmission belt is sleeved on the output shaft of the driving motor and the surface of the screw; a clamping groove is provided on the inner ring wall of the transmission belt; a connecting groove is provided on the surface of the output shaft of the driving motor; a protrusion is connected to the connecting groove in a sliding seal; the protrusion is connected to the groove wall of the connecting groove by a tower spring; an electromagnetic ring is inlaid on the bottom of the connecting groove; a magnet is inlaid on the end of the protrusion close to the electromagnetic ring.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention provides a grinding groove so that when the silicon steel strip passes through the grinding groove to the third and fourth stations, the polishing cloth in the grinding groove can grind off the burrs on the lower end surface of the silicon steel strip, thereby preventing the silicon steel strip from bringing the burrs at the lower end into the third and fourth stations, and preventing the burrs from falling on the surfaces of the rotor punchings and stator punchings in the third and fourth stations. On the one hand, stress concentration at the location of the burrs is prevented during the stacking riveting process, and the rotor punchings and stator punchings are prevented from being mechanically damaged, thereby improving the stacking riveting quality of the stamped rotor punchings and stator punchings; on the other hand, the burrs are prevented from falling into the riveting grooves, so as to ensure that the riveting points of adjacent rotor punchings or stator punchings can be effectively inserted into the riveting grooves, thereby improving the rotor punchings or stator punchings and riveting strength.

[0019] The present invention arranges a cleaning rod so that the sponge sleeve on the surface of the cleaning rod can block dust generated by grinding on the lower end surface of the silicon steel strip, thereby preventing the dust from falling into the stacking grooves of the three-station and the four-station, so as to prevent the dust from falling into the riveting grooves of two adjacent rotor punchings or stator punchings, and avoid the riveting points of the rotor punchings or stator punchings being blocked by the dust falling into the riveting grooves and being difficult to be fully inserted into the riveting grooves below, so that the two adjacent rotor punchings or stator punchings can be tightly connected, the riveting strength of the adjacent rotor punchings or stator punchings is improved, and then the quality of the stacked riveted rotor punchings and stator punchings is improved; so that the practicability of the present invention is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the lower die base used in the present invention;

[0023] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0025] Figure 5 It is a structural schematic diagram of a lower die base equipped with a worm in the present invention;

[0026] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0027] Figure 7 is a transmission schematic diagram of the worm gear used in the present invention;

[0028] Figure 8 yes Figure 7The enlarged view of point D in the middle;

[0029] Fig. 9 It is a structural schematic diagram of a pressing plate equipped with a push plate according to the present invention;

[0030] Fig.10 yes Fig. 9 Enlarged view of point E in the middle;

[0031] In the figure: 1, lower die base; 11, support column; 12, frame; 13, upper die; 131, hydraulic cylinder; 14, stacking groove; 141, discharge port; 142, push plate; 143, electric push rod; 15, stamping groove; 16, dust outlet; 161, conveyor belt; 17, drive motor; 18, round groove; 2, grinding groove; 21, roller; 211, polishing cloth; 22, stacking plate; 221, through groove; 222, hydraulic push rod; 223, push rod; 224, inclined groove; 23, pressing plate; 231, connecting rod; 23 2. Slot; 233. Insert rod; 234. Oil storage tank; 235. Pull rod; 236. Return spring; 24. Mounting plate; 241. Mounting slot; 242. Support plate; 25. Cleaning rod; 251. Sponge cover; 26. Slide plate; 261. Groove; 262. Connecting spring; 263. Pressure sensor; 27. Electro-hydraulic push rod; 3. Worm gear; 31. Worm; 32. Screw; 33. Drive belt; 331. Slot; 34. Connecting slot; 35. Protrusion; 36. Tower spring; 37. Electromagnetic ring; 38. Magnet. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 10 As shown, the automotive motor core stamping and forming equipment described in the present invention includes the following embodiments:

[0034] Embodiment 1, a stamping and forming device for an automobile motor core, comprising:

[0035] The lower die base 1 has a support column 11 fixedly mounted on the upper end of the lower die base 1; a frame 12 is fixedly mounted on the upper end of the support column 11; an upper die 13 is arranged between the lower die base 1 and the frame 12; the upper die 13 is fixedly connected to the frame 12 through a hydraulic cylinder 131; two overlapping grooves 14 and two stamping grooves 15 are arranged on the upper end of the lower die base 1; a dust exhaust port 16 connected to the stamping groove 15 is arranged inside the lower die base 1; a conveyor belt 161 is installed in the dust exhaust port 16; a driving motor 17 is installed inside the lower die base 1; the driving motor 17 is used to drive the conveyor belt 161 to rotate; a discharge port 141 connected to the overlapping groove 14 is arranged on one side of the lower die base 1; a push plate 142 is installed in the discharge port 141; the push plate 142 is connected to the inner wall of the discharge port 141 through an electric push rod 143;

[0036] A grinding groove 2, in which two rollers 21 are rotatably connected; polishing cloths 211 are wound around the surfaces of the two rollers 21; two grinding grooves 2 are provided; the two grinding grooves 2 are respectively located on one side of the two overlapping grooves 14 close to the stamping groove 15; a overlapping plate 22 is slidably and sealedly connected in the overlapping groove 14; a through groove 221 is provided on the surface of the overlapping plate 22; the overlapping plate 22 is connected to the bottom of the overlapping groove 14 through a hydraulic push rod 222; a push rod matching the through groove 221 is fixedly connected to the bottom of the overlapping groove 14; two grinding grooves 2 are provided; the grinding groove 2 close to the stamping groove 15 is connected to the dust exhaust port 16; the side wall of the grinding groove 2 away from the stamping groove 15 is provided with an inclined groove 224 connected to the outside world; the driving motor 17 is also used to drive the roller 21 to rotate.

[0037] In this embodiment, a pressure plate 23 is installed at the upper end of the upper mold 13; a mounting plate 24 is fixedly installed in the grinding groove 2; the mounting plate 24 is located between the two rollers 21; a mounting groove 241 is opened at the upper end of the mounting plate 24; a support plate 242 is slidably connected in the mounting groove 241; a pushing unit is installed in the mounting groove 241; the pushing unit is used to push the support plate 242 to extend out of the mounting groove 241.

[0038] In this embodiment, a cleaning rod 25 is fixedly connected to the grinding groove 2; a sponge cover 251 is provided on the surface of the cleaning rod 25;

[0039] During operation, in the process of punching, the silicon steel strip is kept in a state of continuous conveying, and there are burrs on the side of the punched silicon steel strip close to the die. When the silicon steel strip slides on the lower die seat 1, the burrs will slide and rub against the upper surface of the lower die seat 1, so that the burrs will fall off under the action of friction, so that the continuously conveyed silicon steel strip will drive the fallen burrs to move to the third and fourth stations, causing the burrs to fall on the surfaces of the rotor punchings and stator punchings in the third and fourth stations. On the one hand, it will cause stress concentration at the location of the burrs during the stacking riveting process, thereby causing mechanical damage to the rotor punchings and stator punchings. On the other hand, the burrs fall into the riveting grooves of the rotor punchings and stator punchings, which will cause the riveting points of the upper rotor punchings or stator punchings to be unable to be effectively inserted into the riveting grooves, thereby improving the riveting strength of the rotor punchings or stator punchings;

[0040] In this regard, the present invention sets a grinding groove 2 so that when the silicon steel strip passes through the grinding groove 2 to the third and fourth stations, the polishing cloth 211 in the grinding groove 2 can grind off the burrs on the lower end surface of the silicon steel strip, thereby preventing the silicon steel strip from bringing the burrs at the lower end into the third and fourth stations, and preventing the burrs from falling on the surfaces of the rotor punchings and stator punchings in the third and fourth stations. On the one hand, it prevents stress concentration at the location of the burrs during the stacking riveting process, prevents the rotor punchings and stator punchings from being mechanically damaged, and improves the stacking riveting quality of the stamped rotor punchings and stator punchings; on the other hand, it prevents the burrs from falling into the riveting grooves, so as to ensure that the riveting points of the adjacent rotor punchings or stator punchings can be effectively inserted into the riveting grooves, thereby improving the rotor punchings or stator punchings and riveting strength;

[0041] In the initial state, the output shaft of the driving motor 17 is connected to the rotating roller 21, and the output shaft of the driving motor 17 is connected to the conveying shaft of the conveyor belt 161 through a belt transmission. A punch is fixedly connected to the lower end of the upper die 13; the punch is directly opposite to the stamping groove 15 and the stacking groove 14, and the external feeding device transports the silicon steel strip from the end of the lower die base 1 close to the stamping groove 15 to the stacking groove 14. At this time, the stamping groove 15 close to the external feeding device is the first station, and the stamping groove 15 close to the stacking groove 14 is the second station, the stacking groove 14 close to the external feeding device is the third station, and the stacking groove 14 far away from the external conveying device is the fourth station; the first grinding groove 2 is close to the stamping groove 15, and the second grinding groove 2 is far away from the stamping groove 15. The groove 2 is located between the stamping groove 15 and the overlapping groove 14, the first grinding groove 2 is connected to the dust exhaust port 16, the second grinding groove 2 is located between the two overlapping grooves 14, and the second grinding groove 2 is connected to the inclined groove 224; when the feeding device transports the silicon steel strip to the first station, the feeding device stops, and the hydraulic cylinder 131 pushes the upper die 13 close to the lower die seat 1, so that the upper die 13 drives the punch to contact the silicon steel strip, so that the punch cooperates with the stamping groove 15 to punch out the shaft hole on the surface of the silicon steel strip, and then the hydraulic cylinder 131 drives the upper die 13 to rise, and the feeding device transports the silicon steel strip and the surface shaft hole to the second station. At this time, the hydraulic cylinder 131 pushes the upper die 13 again to punch the silicon steel strip, thereby forming an embedded wire groove surrounding the shaft hole at the punching position on the surface of the silicon steel strip, and the hydraulic cylinder 131 repeats When the silicon steel strip is in the first position, the feeding device is controlled to convey the silicon steel strip to the direction of the overlapping groove 14, so that when the silicon steel strip moves to the first grinding groove 2, the burrs that fall off due to the sliding friction between the lower end surface of the silicon steel strip and the upper end surface of the lower die seat 1 will enter the first grinding groove 2 under the push of the silicon steel strip. At the same time, the driving motor 17 is controlled to operate so that the driving motor 17 can drive the rotating roller 21 to rotate, so that the rotating roller 21 drives the polishing cloth 211 wrapped around the surface to rotate. At this time, the rotation direction of the polishing cloth 211 is opposite to the conveying direction of the silicon steel strip, so that the polishing cloth 211 can effectively grind the burrs on the lower end surface of the silicon steel strip, and the burrs that fall off by grinding will move away from the cleaning rod 25 under the drive of the polishing cloth 211 until the polishing cloth 211 drives the burrs to cross the rotating roller 211. The roller 21 rotates downward and falls into the first grinding groove 2; since the first grinding groove 2 is connected to the dust discharge port 16, and the conveyor belt 161 is located below the polishing cloth 211, the burrs dropped from the polishing cloth 211 will fall on the conveyor belt 161 of the dust discharge port 16; since the output shaft of the driving motor 17 and the conveyor shaft of the conveyor belt 161 are connected by belt transmission, the driving motor 17 can drive the conveyor belt 161 to rotate, so that the conveyor belt 161 discharges the burrs on the upper end surface through the end of the dust discharge port 16 away from the first grinding groove 2, thereby avoiding the accumulation of burrs in the grinding groove 2 and reducing the difficulty of cleaning the burrs in the grinding groove 2 for the staff; when the burrs on the lower end surface of the silicon steel strip are polished, the silicon steel strip will move to the cleaning rod 25;

[0042] When the silicon steel strip moves to the third station through the grinding groove 2, the punch at the third station punches the silicon steel strip, and the silicon steel sheet dropped by the punching is the stator punching sheet, and the stator punching sheet dropped by the punching will fall into the stacking groove 14; because a hydraulic push rod 222 is installed in the stacking groove 14, in the initial state, the hydraulic push rod 222 pushes the stacking plate 22 close to the punch, that is, after the punch punches the stator punching sheet, the stator punching sheet will enter the stacking groove 14 and fall into the upper end of the stacking plate 22 under the push of the punch, and at this time, the hydraulic push rod 222 is controlled to descend The height of a stator punch. When the punch pushes the new stator punch into the stacking groove 14, the new stator punch will enter the stacking groove 14 under the push of the punch and contact the stator punch on the upper end of the stacking plate 22. At this time, the riveting point on the lower end face of the upper stator punch will enter the riveting groove on the upper end face of the lower stator punch, so that the two stator punches are riveted. This is repeated. When the number of stacked riveted stator punches reaches the required number, the hydraulic push rod 222 is controlled to pull the stacking plate 22 down to the same plane as the discharge port 141. At this time, Then, the electric push rod 143 is controlled to extend and push the stator punching sheet on the upper end surface of the stacking plate 22 to slide out through the end connected to the outside through the discharge port 141. At the same time, the staff outside collects the stator punching sheet that slides out of the discharge port 141. Similarly, when the silicon steel strip passes through the third station to the second grinding groove 2, the polishing cloth 211 in the second grinding groove 2 will grind the silicon steel strip, and the burrs that fall off during grinding will be discharged through the inclined groove 224 connected to the second grinding groove 2, thereby reducing the staff's The cleaning difficulty of the grinding groove 2 is that the cleaning rod 25 in the second grinding groove 2 blocks the dust on the lower end surface of the silicon steel strip until the silicon steel strip reaches the fourth station, so that the punch at the fourth station punches the silicon steel strip to obtain the rotor punching sheet, and the punch punches the rotor punching sheet into the stacking groove 14 of the fourth station for stacking and riveting. After the stacking and riveting is completed, the electric push rod 143 at the fourth station pushes the stacked and riveted rotor punching sheet to be discharged through the discharge port 141 through the push plate 142. At this time, the external staff collects the rotor punching sheet that slides out of the discharge port 141;

[0043] When the polishing cloth 211 grinds the burrs on the lower end surface of the silicon steel strip, the surface of the silicon steel strip will inevitably produce fine particles (i.e., dust) due to grinding. These fine particles will adhere to the lower end surface of the silicon steel strip and be brought into the third or fourth station by the silicon steel strip, so that the dust falls into the riveting groove of the rotor punching sheet or the stator punching sheet, so that the cleaning rod 25 can block the dust generated by grinding on the lower end surface of the silicon steel strip through the sponge sleeve 251 on the surface, thereby preventing the dust from falling into the stacking groove 14 of the third and fourth stations, so as to prevent the dust from falling into the riveting grooves of two adjacent rotor punching sheets or stator punching sheets, and avoid the rivet points of the rotor punching sheets or stator punching sheets being blocked by the dust falling into the riveting grooves and being difficult to be fully inserted into the riveting grooves below, so that the adjacent two rotor punching sheets or stator punching sheets can be tightly connected, thereby improving the riveting strength of the adjacent rotor punching sheets or stator punching sheets, and thereby improving the quality of the stacked riveted rotor punching sheets and stator punching sheets; so that the practicality of the present invention is further improved;

[0044] By opening a through groove 221 on the surface of the stacking plate 22, the riveting points of the punched rotor and stator sheets are located at the through groove 221. When the stator and rotor sheets are stacked to the required number, the hydraulic push rod 222 pulls the stacking plate 22 down to be in the same plane as the discharge port 141. At this time, the descending stacking plate 22 will approach the push rod 223, so that the push rod 223 can be inserted into the through groove 221 and push the riveting point inserted into the through groove 221 out of the through groove 221, thereby preventing the stacked riveted stator and rotor sheets from being difficult to be pushed out due to the riveting points being stuck in the through groove 221, so that the practicality of the present invention is improved.

[0045] By setting the support plate 242, the support plate 242 extends out of the installation slot 241 under the push of the pushing unit, so that the support plate 242 extending out of the installation slot 241 pushes the polishing cloth 211 to contact the silicon steel belt, and the pressure plate 23 located at the upper end of the silicon steel belt will block the silicon steel belt, so that the pressure plate 23 cooperates with the support plate 242, thereby squeezing the polishing cloth 211 and fitting the silicon steel belt, thereby improving the polishing effect of the polishing cloth 211 on the silicon steel belt; ensuring that the burrs on the lower end surface of the silicon steel belt are polished off; preventing the burrs from entering the stacking slot 14, thereby ensuring that the rotor punchings or stator punchings in the stacking slot 14 can be tightly stacked and riveted without being affected by the burrs, thereby improving the practicality of the present invention.

[0046] In this embodiment, a circular groove 18 is provided at the upper end of the lower mold base 1; a connecting rod 231 is slidably connected in the circular groove 18; the end of the connecting rod 231 away from the circular groove 18 is fixedly connected to the pressure plate 23; a slot 232 is provided on the surface of the connecting rod 231; an insert rod 233 is slidably and sealably connected in the slot 232; an oil storage groove 234 connected to the slot 232 is provided on the mounting plate 24; a pull rod 235 is slidably and sealably connected in the oil storage groove 234; the pull rod 235 and the bottom of the oil storage groove 234 are connected via a reset spring 236.

[0047] In this embodiment, a slide plate 26 is arranged above the support plate 242; a groove 261 is opened at the lower end of the slide plate 26; the support plate 242 is slidably connected in the groove 261; a connecting spring 262 is arranged in the groove 261; a pressure sensor 263 is installed at one end of the support plate 242 away from the mounting groove 241; one end of the connecting spring 262 is connected to the pressure sensor 263, and the other end is connected to the bottom of the groove 261.

[0048] In this embodiment, the pushing unit includes an electro-hydraulic push rod 27; one end of the electro-hydraulic push rod 27 is fixedly mounted on the bottom of the mounting groove 241, and the other end is connected to the support plate 242;

[0049] During operation, since the silicon steel strip usually has a specific surface coating or oxide layer, if the friction between the polishing cloth 211 and the lower end surface of the silicon steel strip is too large, the polishing cloth 211 will remove the coating or oxide layer on the surface of the silicon steel strip, thereby affecting its electromagnetic performance. If the friction is small, it is difficult to effectively remove the burrs on the lower end surface of the silicon steel strip. In this regard, the present invention sets a support plate 242, and controls the electro-hydraulic push rod 27 in the mounting groove 241 to push the support plate 242 away from the mounting plate 24, so that the support plate 242 drives the slide plate 26 to contact the polishing cloth 211. Since the polishing cloth 211 contacts the lower end surface of the silicon steel strip, and the pressure plate 23 blocks the upper end surface of the silicon steel strip, the slide plate 26 cooperates with the pressure plate 23 to clamp the polishing cloth 211 and the silicon steel strip. Since the lower end of the pressure plate 23 is provided with a groove 261; the support plate 242 is connected to the bottom of the groove 261 by a connecting spring 262. As the electro-hydraulic push rod 27 pushes the support plate 242 to rise, the slide plate 26 and the support plate 242 are close to each other, so that the slide plate 26 and the support plate 242 squeeze the connecting spring 262 in the groove 261. , so that the connecting spring 262 pushes the slide plate 26 to squeeze the polishing cloth 211 and the silicon steel strip tightly under the action of its own restoring force. Since the force is mutual, the thrust applied by the slide plate 26 to the polishing cloth 211 by the thrust of the connecting spring 262 is the squeezing force between the polishing cloth 211 and the silicon steel strip; since the connecting spring 262 is connected to the pressure sensor 263, the thrust applied by the connecting spring 262 to the slide plate 26 is the pressure sensed by the pressure sensor 263, that is, the pressure sensor 263 can sense the magnitude of the squeezing force between the polishing cloth 211 and the silicon steel strip. Since the friction between the polishing cloth 211 and the silicon steel strip is proportional to the pressure between the two, the user can adjust the friction between the polishing cloth 211 and the silicon steel strip according to the pressure data transmitted by the pressure sensor 263, thereby ensuring that the burrs on the lower end surface of the silicon steel strip are effectively removed, and preventing the polishing cloth 211 from removing the coating or oxide layer on the surface of the silicon steel strip due to excessive pressure, thereby ensuring its electromagnetic performance, so that the practicality of the present invention is improved;

[0050] Since the thickness of the silicon steel strip used to manufacture the motor core of different models is different, in order to ensure that the pressure plate 23 can cover the silicon steel strips of different thicknesses on the upper end surface of the lower die seat 1, the present invention sets a connecting rod 231. In the initial state, the oil storage tank 234 is filled with hydraulic oil. The user first pulls the pull rod 235 so that the end of the pull rod 235 away from the oil storage tank 234 extends out of the oil storage tank 234. At this time, the return spring 236 is squeezed and compressed, so that the space in the oil storage tank 234 is increased; because the slot 232 is connected to the oil storage tank 234, the hydraulic oil in the slot 232 can enter the oil storage tank 234. At this time, the hydraulic pressure in the slot 232 is reduced to a negative pressure state, so that the insertion rod 233 enters the slot 232 under the adsorption of the negative pressure, so that the connecting rod 231 slides in contact with the circular groove 18. At this time, the user lifts the pressure plate 23 through the pull rod 235, loosens the pull rod 235, and allows the pull rod 235 to enter the oil storage tank 234 under the pull of the restoring force of the return spring 236, so that the pull rod 235 can squeeze the hydraulic oil in the oil storage tank 234 into the slot 232, so that the insertion rod 233 in the slot 232 can extend out of the slot 232 under the push of the hydraulic oil and press against the groove wall of the circular groove 18, so that the connecting rod 231 can slide in contact with ... The rod 231 is fixed in the circular groove 18 with the support of the insertion rod 233; then the external feeding device conveys the silicon steel strip to pass between the pressure plate 23 and the polishing cloth 211. After one end of the silicon steel strip passes through four stations, a traction device is used to clamp one end of the silicon steel strip that passes through the lower die seat 1 and to pull the silicon steel strip, which not only ensures that the steel strip can pass between the pressure plate 23 and the polishing cloth 211, but also facilitates the recycling of the silicon steel strip waste after stamping. When one end of the silicon steel strip is connected to the traction device, the pull rod 235 is pulled again, so that the insertion rod 233 enters the slot 232 under the action of negative pressure, and the pressure plate 23 is pushed to bring The movable connecting rod 231 enters the circular groove 18 until the pressure plate 23 contacts the silicon steel strip. At this time, the pull rod 235 is released, so that the pull rod 235 is reset under the action of the reset spring 236, so that the connecting rod 231 is fixed inside the circular groove 18 through the insertion rod 233, so that the pressure plate 23 presses the silicon steel strips of different thicknesses onto the upper end surface of the lower die seat 1, so as to ensure that the polishing cloth 211 can effectively grind the silicon steel strips of different thicknesses and avoid burrs from entering the stacking groove 14, thereby ensuring that the rotor punchings or stator punchings of different thicknesses obtained by punching can be stacked and riveted tightly without being affected by burrs, thereby improving the practicality of the present invention.

[0051] Embodiment 2 is different from Embodiment 1 in that

[0052] The pushing unit includes a worm wheel 3 and a worm 31; the worm wheel 3 is rotatably connected to the bottom of the mounting groove 241; the worm 31 is meshed with the worm wheel 3; both ends of the worm 31 are rotatably connected to the groove wall of the grinding groove 2; the worm 31 is connected to the driving motor 17 through a transmission unit; a screw 32 is fixedly connected to the lower end of the support plate 242; the screw 32 is spirally connected to the worm wheel 3.

[0053] In this embodiment, the transmission unit includes a transmission belt 33; the transmission belt 33 is sleeved on the output shaft of the drive motor 17 and the surface of the screw 32; a clamping groove 331 is provided on the inner ring wall of the transmission belt 33; a connecting groove 34 is provided on the surface of the output shaft of the drive motor 17; a protrusion 35 is connected in a sliding seal in the connecting groove 34; the protrusion 35 is connected to the groove wall of the connecting groove 34 through a tower spring 36; an electromagnetic ring 37 is inlaid on the bottom of the connecting groove 34; a magnet 38 is inlaid on one end of the protrusion 35 close to the electromagnetic ring 37;

[0054] During operation, when it is necessary to adjust the pressure between the polishing cloth 211 and the silicon steel belt, it is only necessary to control the electromagnetic ring 37 to be energized so that the electromagnetic ring 37 can generate the same magnetic pole as the magnet 38, so that the magnet 38 can stretch the conical spring 36 out of the connecting groove 34 under the push of the magnetic repulsion of the electromagnetic ring 37, so that the protrusion 35 extending out of the connecting groove 34 can contact the transmission belt 33. During the rotation of the output shaft of the driving motor 17, the output shaft of the driving motor 17 can drive the protrusion 35 to rotate synchronously. When the protrusion 35 rotates to the inner ring wall of the transmission belt 33, the protrusion 35 can rotate synchronously with the inner ring wall of the transmission belt 33. When the slot 331 is facing, the protrusion 35 enters the slot 331 under the push of the magnetic repulsion, so that the output shaft of the drive motor 17 can be connected to the transmission belt 33 through the protrusion 35, and then the control drive drives the transmission belt 33 to rotate through the protrusion 35; because the meshing block is fixedly connected to the surface of the worm 31, the meshing block meshes with the slot 331 of the inner ring wall of the transmission belt 33, so that during the rotation of the transmission belt 33, the transmission belt 33 can drive the meshing block to drive the worm 31 to rotate, so that during the rotation of the worm 31, the worm 31 can drive the worm wheel 3 meshed with it to rotate; Since the worm wheel 3 is connected with the screw rod 32 by a spiral transmission, the worm wheel 3 can drive the screw rod 32 connected with the spiral transmission to rise during its rotation, so that the screw rod 32 pushes the support plate 242 fixed at the upper end to rise, so that the support plate 242 can push the slide plate 26 to squeeze the polishing cloth 211 and the silicon steel belt to fit together, so that the pressure between the polishing cloth 211 and the silicon steel belt is increased; if it is necessary to reduce the pressure between the polishing cloth 211 and the silicon steel belt, it is only necessary to control the driving motor 17 to rotate in the opposite direction, so that the worm rod 31 can drive the worm wheel 3 to rotate in the opposite direction, The worm gear 3 can drive the screw rod 32 to descend, thereby realizing the adjustment of the support plate 242. Compared with the electro-hydraulic push rod 27, not only the production cost of the present invention is reduced, but also the lifting height of the screw rod 32 is easier to control, so that the pressure between the polishing cloth 211 and the silicon steel strip can be accurately controlled, further ensuring that the burrs on the lower end surface of the silicon steel strip are effectively removed, and preventing the polishing cloth 211 from removing the coating or oxide layer on the surface of the silicon steel strip due to excessive pressure, so as to ensure its electromagnetic performance, thereby improving the practicality of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stamping and forming device for automobile motor core, comprising: A lower die base (1), wherein a support column (11) is fixedly mounted on the upper end of the lower die base (1); a frame (12) is fixedly mounted on the upper end of the support column (11); an upper die (13) is arranged between the lower die base (1) and the frame (12); the upper die (13) is fixedly connected to the frame (12) via a hydraulic cylinder (131); two overlapping grooves (14) and two stamping grooves (15) are arranged on the upper end of the lower die base (1); a dust exhaust port (14) connected to the stamping grooves (15) is arranged inside the lower die base (1). 6); a conveyor belt (161) is installed in the dust exhaust port (16); a drive motor (17) is installed inside the lower die base (1); the drive motor (17) is used to drive the conveyor belt (161) to rotate; a discharge port (141) connected to the lamination groove (14) is opened on one side of the lower die base (1); a push plate (142) is installed in the discharge port (141); the push plate (142) is connected to the inner wall of the discharge port (141) through an electric push rod (143); the characteristics are: A grinding groove (2), wherein two rollers (21) are rotatably connected in the grinding groove (2); polishing cloths (211) are wound around the surfaces of the two rollers (21); two grinding grooves (2) are provided; the two grinding grooves (2) are respectively located on one side of the two stacking grooves (14) close to the stamping groove (15); a stacking plate (22) is slidably and sealably connected in the stacking groove (14); a through groove (221) is provided on the surface of the stacking plate (22); the stacking plate (22) and the stacking groove (14) are slidably and sealably connected to each other. The bottoms of the grooves (14) are connected by a hydraulic push rod (222); the bottom of the stacked groove (14) is fixedly connected with a push rod (223) matched with the through groove (221); two grinding grooves (2) are provided; the grinding groove (2) close to the punching groove (15) is connected with the dust exhaust port (16); the side wall of the grinding groove (2) away from the punching groove (15) is provided with an inclined groove (224) connected with the outside; the driving motor (17) is also used to drive the roller (21) to rotate; A pressing plate (23) is installed at the upper end of the upper die (13) seat; a mounting plate (24) is fixedly installed in the grinding groove (2); the mounting plate (24) is located between the two rollers (21); a mounting groove (241) is opened at the upper end of the mounting plate (24); a support plate (242) is slidably connected in the mounting groove (241); a pushing unit is installed in the mounting groove (241); the pushing unit is used to push the support plate (242) to extend out of the mounting groove (241); A circular groove (18) is provided at the upper end of the lower die base (1); a connecting rod (231) is slidably connected in the circular groove (18); the end of the connecting rod (231) away from the circular groove (18) is fixedly connected to the pressure plate (23); a slot (232) is provided on the surface of the connecting rod (231); an insert rod (233) is slidably and sealably connected in the slot (232); an oil storage groove (234) is provided on the mounting plate (24) and is connected to the slot (232); a pull rod (235) is slidably and sealably connected in the oil storage groove (234); the pull rod (235) is connected to the bottom of the oil storage groove (234) via a return spring (236).

2. The automotive motor core stamping and forming equipment according to claim 1, characterized in that: A cleaning rod (25) is fixedly connected inside the grinding groove (2); a sponge sleeve (251) is sleeved on the surface of the cleaning rod (25).

3. The automobile motor core stamping and forming equipment according to claim 2, characterized in that: A slide plate (26) is arranged above the support plate (242); a groove (261) is provided at the lower end of the slide plate (26); the support plate (242) is slidably connected in the groove (261); a connecting spring (262) is arranged in the groove (261); a pressure sensor (263) is installed at one end of the support plate (242) away from the mounting groove (241); one end of the connecting spring (262) is connected to the pressure sensor (263), and the other end is connected to the bottom of the groove (261).

4. The automobile motor core stamping and forming equipment according to claim 3, characterized in that: The pushing unit comprises an electro-hydraulic push rod (27); one end of the electro-hydraulic push rod (27) is fixedly mounted on the bottom of the mounting groove (241), and the other end is connected to the support plate (242).

5. The automobile motor core stamping and forming equipment according to claim 3, characterized in that: The pushing unit comprises a worm wheel (3) and a worm (31); the worm wheel (3) is rotatably connected to the bottom of the mounting groove (241); the worm (31) is meshed with the worm wheel (3); both ends of the worm (31) are rotatably connected to the groove wall of the grinding groove (2); the worm (31) is connected to the driving motor (17) via a transmission unit; a screw (32) is fixedly connected to the lower end of the support plate (242); and the screw (32) is connected to the worm wheel (3) via a helical transmission.

6. The automobile motor core stamping and forming equipment according to claim 5, characterized in that: The transmission unit comprises a transmission belt (33); the transmission belt (33) is sleeved on the output shaft of the drive motor (17) and the surface of the screw (32); a clamping groove (331) is provided on the inner ring wall of the transmission belt (33); a connecting groove (34) is provided on the surface of the output shaft of the drive motor (17); a protrusion (35) is connected in a sliding seal in the connecting groove (34); the protrusion (35) is connected to the groove wall of the connecting groove (34) through a tower spring (36); an electromagnetic ring (37) is embedded in the groove bottom of the connecting groove (34); and a magnet (38) is embedded at one end of the protrusion (35) close to the electromagnetic ring (37).

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