Thin-specification new energy electrical steel stamping equipment and operation method

Abstract

The invention discloses thin-specification new energy electrical steel stamping equipment and an operation method, and relates to the technical field of electrical steel stamping, the thin-specification new energy electrical steel stamping equipment comprises a base and a top beam frame arranged on one side of the top of the base, and positioning air cylinders are symmetrically arranged on the two sides of the top of the top beam frame; a positioning pressing plate used for positioning electrical steel is arranged at the movable end of the positioning air cylinder, in the process that the positioning pressing plate descends to position the electrical steel, the positioning pressing plate drives the U-shaped frame and the rack to descend, the rack drives the gear ring and the transverse moving lead screw to rotate, and the transverse moving lead screw drives the connecting frame and the shovel plate to move. The shoveling plate can clean sundries attached to the stamping face of the electrical steel, the n-shaped frame descends to extrude the air bag block, the air bag block collapses, air enters the air flow channel in an accelerated mode through the hose to be sprayed out, the stamping face of the electrical steel can be pneumatically cleaned, tiny scrap iron is prevented from being attached to the surface of the electrical steel when the electrical steel is stamped to the maximum extent, and the service life of the electrical steel is prolonged. And the stamping head and the electrical steel are well protected.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical steel stamping, and in particular to thin-gauge new energy electrical steel stamping equipment and an operating method. Background Art

[0002] Electrical steel, also known as silicon steel, is a ferrosilicon alloy with a silicon content of 0.5% to 6.5%. As a core soft magnetic material in the power industry, electrical steel plays an irreplaceable role in equipment such as motors and transformers. Its performance directly impacts energy conversion efficiency. In new energy vehicle drive motors, high-grade electrical steel can improve motor efficiency by 1-3%.

[0003] Most of the existing cold-rolled non-oriented thin-gauge new energy electrical steels often have small iron chips attached to their stamping surfaces during the high-punching process, causing wear of the punch head and scratches on the electrical steel surface during the stamping process. In the long run, this will lead to damage to the mold and cause great losses to users.

[0004] In summary, most of the existing cold-rolled non-oriented thin-gauge new energy electrical steels have the problem of small iron chips often adhering to the stamping surface during the high-punching process, which causes wear of the punch head and scratches on the surface of the electrical steel during the stamping process. In the long run, it will cause damage to the mold and cause great losses to users. Summary of the Invention

[0005] The purpose of the present invention is to provide a thin-gauge new energy electrical steel stamping equipment and operation method, which solves the technical problem that during the high-punching process of most existing cold-rolled non-oriented thin-gauge new energy electrical steels in the prior art, fine iron filings often adhere to the stamping surface, causing wear of the stamping head and scratches on the surface of the electrical steel during the stamping process, which will cause damage to the mold in the long run and cause great losses to users.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A thin-gauge new energy electrical steel stamping device includes a base, a top beam frame arranged on one side of the top of the base;

[0008] Positioning cylinders are symmetrically arranged on both sides of the top of the top beam frame, and the movable ends of the positioning cylinders are provided with positioning pressure plates for positioning the electrical steel;

[0009] The rotating frames on both sides of the table top of the base are provided with two groups of symmetrically distributed transverse screw rods, the outer side threads of the transverse screw rods are connected with threaded seats, a connecting frame is provided between the threaded seats, and the top of the connecting frame is symmetrically provided with threaded shafts, and the outer side of the threaded shaft is sleeved with a shovel plate for cleaning the area to be stamped of electrical steel, an air flow channel is opened through one side of the shovel plate, a reserved groove is opened through the top of the shovel plate, and the reserved groove is located between the air flow channels, a hose is provided at the input end of the shovel plate, and the table top of the base is provided with an air bag block for providing air flow to the shovel plate, and the output end of the air bag block is connected to the input end of the hose, and a profile frame for extruding the air bag block is provided on one side of the positioning pressure plate.

[0010] Preferably, a one-way air inlet valve is provided on one side of the airbag block.

[0011] Preferably, a stamping cylinder is provided on one side of the top of the top beam frame, and the stamping cylinder is located between the positioning cylinders, and a stamping head matching the reserved groove is provided at the movable end of the stamping cylinder.

[0012] Preferably, side panel frames are symmetrically provided at both ends of the table top of the base, and the side panel frames are located on both sides of the shovel plate, and lifting grooves are opened through both sides of the side panel frames.

[0013] Preferably, a flattening roller 1 for supporting the electrical steel is rotatably provided between the side plate frames, a flattening roller 2 for flattening the electrical steel is rotatably provided inside the lifting groove, and limiting rings for limiting the electrical steel are symmetrically provided at both ends of the flattening roller 1.

[0014] Preferably, a support frame is provided on the top of the side plate frame, a lifting frame is movably provided inside the support frame, and two ends of the lifting frame are respectively located on both sides of the side plate frame and are rotatably connected to the two ends of the flattening roller 2.

[0015] Preferably, the top of the support frame is rotatably provided with a lifting screw for driving the lifting frame to lift, one side of the side plate frame is provided with a motor for driving a flattening roller to rotate, a stamping seat for stamping electrical steel is provided on the table top of the base, the top of the top beam frame is movably provided with a protective cover for protecting the stamping cylinder and the positioning cylinder, and a stroke sensor is provided at the end of the top beam frame.

[0016] Preferably, the upper and lower walls of the airbag block are provided with support plates, a plurality of reset springs are provided between the support plates, a gear ring is provided at the end of the transverse screw away from the shovel plate, a profile frame is provided on one side of the positioning cylinder, and racks matching the profile frame are provided on both sides of the bottom of the profile frame

[0017] Preferably, the table top of the base is provided with a second protective cover matching the gear ring and the rack, and the bottom of the base is provided with a bottom groove matching the rack.

[0018] A method for stamping thin-gauge new energy electrical steel comprises the following steps:

[0019] Step 1: Before stamping the electrical steel, check the surface quality and end face quality of the strip. There should be no convex spots or pits. If any abnormality is found, it needs to be cut off and re-threaded. Also check whether the strip has sickle bend or poor plate shape (unevenness ≥ 2mm / m) or excessive width (positive deviation is not allowed). If not, it needs to be cut off and re-threaded.

[0020] Step 2: Then rotate the lifting screw to drive the lifting frame to drive the flattening roller 2 to move up and down, and then pass the electrical steel through the flattening roller 1 and the flattening roller 2 set at both ends in sequence, and then rotate the lifting screw in the opposite direction to make the flattening roller 2 descend, and use the flattening roller 2 to form appropriate extrusion on the electrical steel to flatten the electrical steel. At this time, the electrical steel is located on the stamping seat;

[0021] Step 3: Start the motor to drive the flattening roller to rotate, thereby assisting in feeding. When the stroke sensor detects that the electrical steel has moved to a predetermined distance, the stroke sensor controls the positioning cylinder to start, and the positioning cylinder drives the positioning plate to descend to position the electrical steel.

[0022] Step 4: During the positioning process, the positioning pressure plate drives the profiling frame and the rack to descend, and the rack drives the gear ring to rotate, thereby rotating the transverse screw rod, and the transverse screw rod drives the connecting frame and the shovel plate to move. The shovel plate can clean the debris attached to the stamping surface of the electrical steel. When the cleaning is completed, the reserved groove on the shovel plate is located directly below the punch head, and the profiling frame descends to squeeze the airbag block, and the airbag block collapses. The gas is accelerated through the hose into the air flow channel and ejected, which can pneumatically clean the stamping surface of the electrical steel.

[0023] Step 5. After the cleaning is completed, start the punching cylinder, which drives the punching head to punch the electrical steel. The high-punch speed is determined according to the thickness of the strip. The punching speed of strips with a thickness of less than 0.25mm (including 0.25mm) is controlled below 100m / min. The high-punch speed of strips with a thickness greater than 0.25mm is controlled at 100-120m / min. The head speed is produced at a low speed (below 60m / min). After stabilizing for 2-5 minutes, the speed is increased uniformly to the set speed.

[0024] Beneficial effects of the present invention:

[0025] 1. In the present invention, when the positioning plate descends to position the electrical steel, the positioning plate drives the profile frame and the rack to descend, the rack drives the gear ring and the transverse screw to rotate, and the transverse screw drives the connecting frame and the shovel to move. The shovel can clean the debris attached to the stamping surface of the electrical steel, and the descent of the profile frame will squeeze the airbag block, and the airbag block will collapse. The gas is accelerated through the hose to enter the air flow channel and sprayed out, which can pneumatically clean the stamping surface of the electrical steel, and avoid the adhesion of small iron filings on the surface of the electrical steel during stamping to the greatest extent, and form a good protection for the punching head and the electrical steel.

[0026] 2. In the present invention, two sets of nuts are provided on the threaded shaft, the lower nuts support the shovel plate, and the upper nuts fix the shovel plate. Therefore, during use, the staff can flexibly adjust the height of the shovel plate according to the thickness of the electrical steel, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is one of the overall three-dimensional schematic diagrams of the device in the present invention;

[0029] Figure 2 This is the second overall three-dimensional schematic diagram of the device of the present invention;

[0030] Figure 3 This is the third overall three-dimensional schematic diagram of the device of the present invention;

[0031] Figure 4 This invention Figure 3 A in the middle is an enlarged schematic diagram;

[0032] Figure 5 This is a schematic diagram of the cooperation between the connecting frame and the threaded shaft in the present invention;

[0033] Figure 6 It is a three-dimensional schematic diagram of the bottom groove of the present invention;

[0034] Figure 7 It is a schematic diagram of the cooperation between the ring gear and the rack in the present invention.

[0035] In the figure: 1. Base; 2. Top beam frame; 3. Punching cylinder; 4. Punching head; 5. Positioning cylinder; 6. Positioning pressure plate; 7. Side plate frame; 8. Lifting slot; 9. Electrical steel; 10. Flattening roller 1; 11. Flattening roller 2; 12. Limiting collar; 13. Support frame; 14. Lifting frame; 15. Lifting screw; 16. Punching seat; 17. Protective cover 1; 18. Stroke sensor; 19. Transverse screw; 20. Threaded seat; 21. Connecting frame; 22. Threaded shaft; 23. Shovel plate; 24. Air flow channel; 25. Reserved slot; 26. Hose; 27. Airbag block; 28. Support plate; 29. ​​Return spring; 30. Gear ring; 31. Profile frame; 32. Rack; 33. Protective cover 2; 34. Bottom slot. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1-7 As shown, the present invention is a thin-gauge new energy electrical steel stamping equipment, comprising a base 1, a top beam frame 2 arranged on one side of the top of the base 1;

[0038] Positioning cylinders 5 are symmetrically arranged on both sides of the top of the top beam frame 2, and the movable ends of the positioning cylinders 5 are provided with positioning pressure plates 6 for positioning the electrical steel 9;

[0039] The rotating frames on both sides of the table of the base 1 are provided with two sets of symmetrically distributed transverse screw rods 19, the outer side of the transverse screw rod 19 is connected with a threaded seat 20 through a thread, and a connecting frame 21 is provided between the threaded seats 20. The top of the connecting frame 21 is symmetrically provided with a threaded shaft 22, and the outer side of the threaded shaft 22 is provided with a shovel plate 23 for cleaning the area to be stamped of the electrical steel 9. An air flow channel 24 is opened through one side of the shovel plate 23, and a reserved groove 25 is opened through the top of the shovel plate 23, and the reserved groove 25 is located between the air flow channels 24, and the delivery of the shovel plate 23 A hose 26 is provided at the inlet end, and an air bag block 27 for providing air flow to the shovel plate 23 is provided on the table top of the base 1, and the output end of the air bag block 27 is connected to the input end of the hose 26. A profile frame 31 for squeezing the air bag block 27 is provided on one side of the positioning pressure plate 6. Two sets of nuts are provided on the threaded shaft 22. The lower nut supports the shovel plate 23, and the upper nut fixes the shovel plate 23. Therefore, during use, the staff can flexibly adjust the height of the shovel plate 23 according to the thickness of the electrical steel 9, which is convenient and quick.

[0040] In this embodiment, specifically, a one-way air intake valve is provided on one side of the airbag block 27 .

[0041] In this embodiment, specifically, a punching cylinder 3 is provided on one side of the top of the top beam frame 2 , and the punching cylinder 3 is located between the positioning cylinders 5 , and a punching head 4 matching the reserved groove 25 is provided at the movable end of the punching cylinder 3 .

[0042] In this embodiment, specifically, side plate frames 7 are symmetrically provided at both ends of the table top of the base 1 , and the side plate frames 7 are located on both sides of the shovel plate 23 , and lifting slots 8 are opened through both sides of the side plate frames 7 .

[0043] In this embodiment, specifically, a flattening roller 10 for supporting the electrical steel 9 is rotatably provided between the side plate frames 7, a flattening roller 11 for flattening the electrical steel 9 is rotatably provided inside the lifting groove 8, and limiting rings 12 for limiting the electrical steel 9 are symmetrically provided at both ends of the flattening roller 10.

[0044] In this embodiment, specifically, a support frame 13 is provided on the top of the side plate frame 7, and a lifting frame 14 is movably provided inside the support frame 13, and the two ends of the lifting frame 14 are respectively located on both sides of the side plate frame 7 and are rotatably connected to the two ends of the flattening roller 11.

[0045] In this embodiment, specifically, the top of the support frame 13 is rotatably provided with a lifting screw 15 for driving the lifting frame 14 to lift and lower, one side of the side plate frame 7 is provided with a motor for driving the flattening roller 10 to rotate, a stamping seat 16 for stamping electrical steel 9 is provided on the table top of the base 1, and a protective cover 17 for protecting the stamping cylinder 3 and the positioning cylinder 5 is movably provided on the top of the top beam frame 2, and a stroke sensor 18 is provided at the end of the top beam frame 2.

[0046] In this embodiment, specifically, the upper and lower walls of the airbag block 27 are provided with support plates 28, and a plurality of reset springs 29 are provided between the support plates 28. A gear ring 30 is provided at the end of the transverse screw 19 away from the shovel plate 23, and a profile frame 31 is provided on one side of the positioning cylinder 5. Racks 32 matching the profile frame 31 are provided on both sides of the bottom of the profile frame 31.

[0047] In this embodiment, specifically, the table top of the base 1 is provided with a second protective cover 33 matching the gear ring 30 and the rack 32 , and the bottom of the base 1 is provided with a bottom groove 34 matching the rack 32 .

[0048] Step 1: Before stamping the electrical steel 9, first check the surface quality and end face quality of the strip material. There are no convex spots or pits. Because the limit gap in front of the die is small, there are abnormalities between the surface and end face of the strip material or stamping jams. If any abnormality is found, it is necessary to cut it off and re-thread it. It is also necessary to check whether the strip material has sickle bend or poor plate shape (unevenness ≥ 2mm / m) or excessive width (positive deviation is not allowed). If it does not meet the requirements, it needs to be cut off and re-threaded.

[0049] Step 2: Then rotate the lifting screw 15 to drive the lifting frame 14 to drive the flattening roller 2 11 to move up and down, and then pass the electrical steel 9 through the flattening roller 10 and the flattening roller 2 11 set at both ends in sequence, and then rotate the lifting screw 15 in the opposite direction to make the flattening roller 2 11 descend, and use the flattening roller 2 11 to form a proper extrusion on the electrical steel 9 to flatten the electrical steel 9. At this time, the electrical steel 9 is located on the stamping seat 16;

[0050] Step 3: Start the motor to drive the flattening roller 10 to rotate, thereby assisting in feeding. When the stroke sensor 18 detects that the electrical steel 9 has moved to a predetermined distance, the stroke sensor 18 controls the positioning cylinder 5 to start, and the positioning cylinder 5 drives the positioning plate 6 to descend to position the electrical steel 9.

[0051] Step 4: During the positioning process, the positioning pressure plate 6 drives the profile frame 31 and the rack 32 to descend, and the rack 32 drives the gear ring 30 to rotate, thereby rotating the transverse screw 19, and the transverse screw 19 drives the connecting frame 21 and the shovel plate 23 to move. The shovel plate 23 can clean the debris attached to the stamping surface of the electrical steel 9. When the cleaning is completed, the reserved groove 25 on the shovel plate 23 is located directly below the punch head 4, and the profile frame 31 descends to squeeze the airbag block 27, and the airbag block 27 collapses. The gas is accelerated through the hose 26 and ejected into the air flow channel 24, which can pneumatically clean the stamping surface of the electrical steel 9;

[0052] Step 5. After the cleaning is completed, start the punching cylinder 3. The punching cylinder 3 drives the punching head 4 to punch the electrical steel 9. The high-punch speed is determined according to the thickness of the strip. The punching speed of strips with a thickness of less than 0.25mm (including 0.25mm) is controlled below 100m / min. The high-punch speed of strips with a thickness greater than 0.25mm is controlled at 100-120m / min. The leading speed is produced at a low speed (below 60m / min). After stabilizing for 2-5 minutes, the speed is increased uniformly to the set speed.

[0053] Working principle: Before stamping the electrical steel 9, first check the surface quality and end face quality of the strip material, without convex spots or pits. Because the limit gap in front of the mold is small, there are abnormalities between the surface and end face of the strip material or stamping jam occurs. If any abnormality is found, it needs to be cut off and re-threaded. It is also necessary to check whether the strip material has sickle bending or poor plate shape (unevenness ≥ 2mm / m) or excessive width (positive deviation is not allowed). If it does not meet the requirements, it needs to be cut off and continued to thread. Then, turn the lifting screw 15 to drive the lifting frame 14 to drive the flattening roller 2 11 to rise and fall, and then thread the electrical steel 9 in sequence. The electric steel 9 is passed between the flattening roller 10 and the flattening roller 2 11 provided at both ends, and then the lifting screw 15 is rotated in the opposite direction to make the flattening roller 2 11 descend, and the flattening roller 2 11 is used to form appropriate extrusion on the electrical steel 9 to flatten the electrical steel 9. At this time, the electrical steel 9 is located on the punching seat 16 and the motor is started to drive the flattening roller 10 to rotate, thereby playing the role of auxiliary feeding. When the stroke sensor 18 detects that the electrical steel 9 has moved to a predetermined distance, the stroke sensor 18 controls the positioning cylinder 5 to start, and the positioning cylinder 5 drives the positioning pressure plate 6 to descend to position the electrical steel 9. During the positioning process, the positioning pressure plate 6 drives the profile frame 31 and the rack 32 to descend, and the rack 32 drives the gear ring 30 to rotate, thereby causing the transverse screw 19 to rotate, and the transverse screw 19 drives the connecting frame 21 and the shovel plate 23 to move. The shovel plate 23 can clean the debris attached to the stamping surface of the electrical steel 9. When the cleaning is completed, the reserved groove 25 on the shovel plate 23 is located directly below the punching head 4, and the profile frame 31 descends to squeeze the airbag block 27, and the airbag block 27 collapses. The gas is accelerated through the hose 26 and enters the airflow channel 24 and is ejected, which can clean the electrical steel 9. The stamping surface of the electrical steel 9 is pneumatically cleaned. When the cleaning is completed, the stamping cylinder 3 is started. The stamping cylinder 3 drives the punching head 4 to stamp the electrical steel 9. The high-punch speed is determined according to the thickness of the strip. The stamping speed of strips with a thickness of less than 0.25 mm (including 0.25 mm) is controlled below 100 m / min. The high-punch speed of strips with a thickness greater than 0.25 mm is controlled at 100-120 m / min. The leading speed is produced at a low speed (below 60 m / min). After stabilizing for 2-5 minutes, the speed is increased uniformly to the set speed.

[0054] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A thin-gauge new energy electrical steel stamping equipment, comprising a base (1) and a top beam (2) arranged on one side of the top of the base (1); characterized in that: Positioning cylinders (5) are symmetrically arranged on both sides of the top of the top beam frame (2), and the movable ends of the positioning cylinders (5) are provided with positioning pressure plates (6) for positioning the electrical steel (9); The rotating frames on both sides of the table of the base (1) are provided with two groups of symmetrically distributed transverse screw rods (19), the outer sides of the transverse screw rods (19) are connected with threaded seats (20) by threads, and a connecting frame (21) is provided between the threaded seats (20), and the tops of the connecting frames (21) are symmetrically provided with threaded shafts (22), and the outer sides of the threaded shafts (22) are provided with a shovel plate (23) for cleaning the area to be stamped of the electrical steel (9), and an air flow channel (23) is provided through one side of the shovel plate (23). 4), a reserved groove (25) is provided through the top of the shovel plate (23), and the reserved groove (25) is located between the air flow channels (24), the input end of the shovel plate (23) is provided with a hose (26), the table top of the base (1) is provided with an air bag block (27) for providing air flow for the shovel plate (23), and the output end of the air bag block (27) is connected to the input end of the hose (26), and one side of the positioning pressure plate (6) is provided with a shaped frame (31) for extruding the air bag block (27).

2. The thin-gauge new energy electrical steel stamping equipment according to claim 1 is characterized in that: A one-way air inlet valve is provided on one side of the air bag block (27).

3. The thin-gauge new energy electrical steel stamping equipment according to claim 1 is characterized in that: A punching cylinder (3) is provided on one side of the top of the top beam frame (2), and the punching cylinder (3) is located between the positioning cylinders (5). A punching head (4) matching the reserved groove (25) is provided at the movable end of the punching cylinder (3).

4. The thin-gauge new energy electrical steel stamping equipment according to claim 1 is characterized in that: Side plate frames (7) are symmetrically arranged at both ends of the table top of the base (1), and the side plate frames (7) are located on both sides of the shovel plate (23). Lifting grooves (8) are opened through both sides of the side plate frames (7).

5. The thin-gauge new energy electrical steel stamping equipment according to claim 4 is characterized in that: A flattening roller (10) for supporting the electrical steel (9) is rotatably provided between the side plate frames (7), a flattening roller (11) for flattening the electrical steel (9) is rotatably provided inside the lifting groove (8), and limiting rings (12) for limiting the electrical steel (9) are symmetrically provided at both ends of the flattening roller (10).

6. The thin-gauge new energy electrical steel stamping equipment according to claim 5, characterized in that: A support frame (13) is provided on the top of the side plate frame (7), and a lifting frame (14) is movably provided inside the support frame (13), and the two ends of the lifting frame (14) are respectively located on both sides of the side plate frame (7) and are rotatably connected to the two ends of the flattening roller (11).

7. The thin-gauge new energy electrical steel stamping equipment according to claim 6 is characterized in that: The top of the support frame (13) is rotatably provided with a lifting screw (15) for driving the lifting frame (14) to lift and lower, one side of the side plate frame (7) is provided with a motor for driving the flattening roller (10) to rotate, a punching seat (16) for punching electrical steel (9) is provided on the table surface of the base (1), the top of the top beam frame (2) is movably provided with a protective cover (17) for protecting the punching cylinder (3) and the positioning cylinder (5), and a stroke sensor (18) is provided at the end of the top beam frame (2).

8. The thin-gauge new energy electrical steel stamping equipment according to claim 1 is characterized in that: The upper and lower walls of the airbag block (27) are both provided with support plates (28), and a plurality of groups of return springs (29) are provided between the support plates (28). A gear ring (30) is provided at the end of the transverse screw rod (19) away from the shovel plate (23), and a profile frame (31) is provided on one side of the positioning cylinder (5). Racks (32) matching the profile frame (31) are provided on both sides of the bottom of the profile frame (31).

9. The thin-gauge new energy electrical steel stamping equipment according to claim 8, characterized in that: The table top of the base (1) is provided with a second protective cover (33) matching the gear ring (30) and the rack (32), and the bottom of the base (1) is provided with a bottom groove (34) matching the rack (32).

10. A method for stamping thin-gauge new energy electrical steel according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Before stamping the electrical steel (9), first check the surface quality and end face quality of the strip material. There are no convex spots or pits. If any abnormality is found, it needs to be cut off and re-threaded. It is also necessary to check whether the strip material has sickle bend or poor plate shape or excessive width. If it does not meet the requirements, it needs to be cut off and re-threaded. Step 2: Then rotate the lifting screw (15) to drive the lifting frame (14) to drive the flattening roller (11) to move up and down, and then pass the electrical steel (9) through the flattening roller (10) and the flattening roller (11) provided at both ends in sequence, and then rotate the lifting screw (15) in the opposite direction to make the flattening roller (11) descend, and use the flattening roller (11) to form a suitable extrusion on the electrical steel (9) to flatten the electrical steel (9). At this time, the electrical steel (9) is located on the stamping seat (16); Step 3: Start the motor to drive the flattening roller 1 (10) to rotate, thereby assisting the feeding. When the stroke sensor (18) detects that the electrical steel (9) moves to a predetermined distance, the stroke sensor (18) controls the positioning cylinder (5) to start, and the positioning cylinder (5) drives the positioning pressure plate (6) to descend to position the electrical steel (9); Step 4: During the positioning process, the positioning pressure plate (6) drives the profile frame (31) and the rack (32) to descend, and the rack (32) drives the gear ring (30) to rotate, thereby causing the transverse screw rod (19) to rotate, and the transverse screw rod (19) drives the connecting frame (21) and the shovel plate (23) to move, and the shovel plate (23) can clean the debris attached to the stamping surface of the electrical steel (9). When the cleaning is completed, the reserved groove (25) on the shovel plate (23) is located directly below the punch head (4), and the profile frame (31) descends to squeeze the airbag block (27), and the airbag block (27) collapses. The gas is accelerated through the hose (26) into the air flow channel (24) and ejected, and the stamping surface of the electrical steel (9) can be pneumatically cleaned; Step 5. After the cleaning is completed, the punching cylinder (3) is started, and the punching cylinder (3) drives the punching head (4) to punch the electrical steel (9). The high-punching speed is determined according to the thickness of the strip material. The punching speed of the strip material with a thickness of less than 0.25 mm is controlled below 100 m / min, and the high-punching speed of the strip material with a thickness greater than 0.25 mm is controlled within 100-120 m / min. The leading speed is produced at a low speed. After stabilizing for 2-5 minutes, the speed is uniformly increased to the set speed.

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