A segmented motor stator lamination swing stamping die and stamping method

Abstract

The present application relates to the technical field of punch die, and particularly relates to a segmented motor stator punching sheet swing punch die and a punching method, which comprises an upper punching table, a lower punching table, an upper die and a lower die, the upper punching table is installed at a punching end of a swing punch press, the lower punching table is fixedly connected to an upper end of a workbench of the swing punch press, the upper punching table is located above the lower punching table, a switchable punching structure is adopted on the upper die and the lower die, a punching mode is flexibly switched according to a strip width, a horizontal single punch is adopted when the strip is wide, and a vertical single punch is switched when the strip is narrow, different specifications of raw materials can be adapted without replacing a complete set of dies, the structure enables a narrow-width silicon steel strip to be directly punched into a die to punch a fan-shaped stator punching sheet, material waste and feeding deviation caused by adapting a wide-strip die to a narrow strip are avoided, meanwhile, downtime waiting caused by frequent disassembly and assembly of the die is eliminated, one die is used for multiple purposes, and production change efficiency and equipment flexibility are improved.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to a segmented motor stator lamination oscillating stamping die and stamping method. Background Technology

[0002] The oscillating stamping die is a special forming die installed on a punch press, used to stamp silicon steel strip into arc-shaped segmented stator laminations. The die mainly consists of an upper die base, a lower die base, arc-shaped punch and die cutting edges, an oscillating mechanism, a material guiding and positioning device, and a blanking mechanism. The silicon steel strip is fed into the die by the guide plate and precisely positioned by the positioning pin. The punch press slide moves downward, and the upper die is driven by the oscillating mechanism to make a slight horizontal oscillation, so that the punch and die cutting edges gradually contact the sheet metal and complete the punching of the arc contour and stator groove. After the punching is completed, the arc-shaped stator lamination is discharged from the blanking hole of the die, and the frame scrap is automatically separated. This die uses the oscillating shearing principle to reduce the punching force and improve the quality of the arc cross-section. It is suitable for the mass production of segmented stator core laminations for medium and large motors.

[0003] Existing stamping dies for segmented motor stators mostly adopt a fixed structure design. Silicon steel strip enters the die laterally, and after single-station punching, it is blanked to form a single arc-shaped stator blank. The positions of the punch and die cutting edges and the material guiding mechanism of this type of die are fixed, and it can only be adapted to a single material width and a horizontal single punching layout. When the specifications of the silicon steel coil change or the strip width decreases, the original horizontal single punching mode of the die cannot efficiently arrange the narrow strip. If longitudinal staggered punching is to be achieved to improve material utilization, the upper and lower dies need to be replaced as a whole. This fixed structure results in poor die versatility. When changing production, it is necessary to repeatedly disassemble and debug, which not only increases the die reserve cost and die replacement time, but also causes the press downtime to be too long, making it difficult to adapt to the flexible production needs of multiple specifications and small batches. Summary of the Invention

[0004] To address the technical problems of existing segmented motor stator lamination oscillating stamping dies having a fixed structure, being unable to flexibly switch stamping modes and synchronously adjust the material guide reference according to changes in raw material specifications, resulting in cumbersome production changeover and low material utilization, this invention provides a segmented motor stator lamination oscillating stamping die and stamping method.

[0005] The technical solutions provided by the embodiments of the present invention are as follows: This invention provides a segmented motor stator lamination oscillating stamping die, comprising an upper stamping table, a lower stamping table, an upper die, and a lower die. The upper stamping table is mounted on the stamping end of an oscillating punch press, and the lower stamping table is fixedly connected to the upper end of the oscillating punch press worktable. The upper stamping table is located above the lower stamping table and can reciprocate up and down relative to the lower stamping table. The upper die is bolted to the bottom of the upper stamping table, and the lower die is bolted to the top of the lower stamping table. A clamping plate is provided at the bottom of the upper die, and an elastic support mechanism is provided between the clamping plate and the bottom of the upper die. An upper plate is rotatably connected through the top of the clamping plate, and a punch cutting edge is slidably connected through the upper plate. A lower plate is rotatably connected through the top of the lower die, and a die opening is provided through the top of the lower plate. The upper die is provided with an upper adjustment mechanism for adjusting the direction of the punch cutting edge, and the lower die is provided with a lower adjustment mechanism for adjusting the die opening.

[0006] Furthermore, the upper adjustment mechanism includes an upper bolt, a rotating frame, an L-shaped rod, and a guide frame. The rotating frame is fixedly connected to the top of the upper platen. The bottom of the upper mold has a quarter-circle arc-shaped rotating groove. The L-shaped rod is rotatably connected to the inner side of the rotating groove. A stamping frame is rotatably connected through the bottom of the upper mold. The L-shaped rod is fixedly connected to the side wall of the stamping frame. The stamping frame is fixedly connected to the top of the punch cutting edge. Grooves are provided at both ends of the rotating groove. A pair of guide frames are provided. Both guide frames are longitudinally slidably connected to the inner side of the grooves. The upper bolt is threadedly connected through the upper platen and the inside of the rotating frame. A sliding plate is longitudinally slidably connected to the inner side of the rotating frame. A pair of extrusion plates are fixedly connected to the top of the sliding plate. Round rods are slidably connected through both sides of the outer wall of the rotating frame. L-shaped blocks are fixedly connected to the sides of the round rods, upper rods are fixedly connected to the front and rear sides of the L-shaped blocks, the top sides of the extrusion plate are inclined, upper springs are fixedly connected between the side wall of the L-shaped block and the inner side of the rotating frame, one of the upper rods is inserted into one of the guide frames, and the top of the upper bolt is rotatably connected to the bottom of the sliding plate. The L-shaped rod has a vertical groove on its side wall, and a side frame is longitudinally slidably connected to the inside of the vertical groove. Another round rod is inserted into the side frame. By setting the upper adjustment mechanism, the punch cutting edge can be rotated. After adjustment, the upper plate and the position of the punch cutting edge are fixed, and the stamping mode can be flexibly switched according to the width of the strip. When the strip is wide, a horizontal single punch is used, and when the strip is narrow, it is converted to a vertical single punch. Different specifications of raw materials can be adapted without changing the entire set of molds.

[0007] Furthermore, the lower adjustment mechanism includes lower bolts, and L-shaped cavities are provided on both sides of the inner wall of the lower mold. A pair of lower bolts are provided, and the lower bolts are respectively threaded through and connected to both sides of the outer wall of the lower mold. Four threaded holes are equally spaced on the outer wall of the lower platen, and the lower bolts are threaded into the corresponding threaded holes. Two pairs of push rods are provided on the inner side of each L-shaped cavity. The top of the push rods is provided through the top of the lower mold, and four bottom rods are provided through the top of the lower platen. A conversion mechanism for adjusting the extension of the push rods or the extension of the bottom rods is also provided. The lower plate has movable slots on both sides of the outer wall of the four base rods. The outer wall of each base rod is fixedly connected to a side plate that is slidably connected in the movable slot. A lower spring is fixedly connected between the top of the side plate and the top of the movable slot. By adjusting the lower mechanism, the position of the die opening on the lower platen can be adjusted, thus allowing for flexible switching of the stamping mode according to the strip width. For wide strips, a horizontal single punch is used, while for narrow strips, a vertical single punch is used. Different specifications of raw materials can be adapted without changing the entire set of molds.

[0008] The conversion mechanism includes a conversion plate, an extrusion frame, a right-angled block with an inclined surface, a positioning rod, a positioning strip, an L-shaped positioning plate, and a longitudinal frame. Each extrusion frame, positioning rod, and positioning strip is provided in pairs. Each conversion plate, longitudinal frame, and L-shaped positioning plate is provided in fours. All four longitudinal frames are fixedly connected to the inner side of the lower mold. An extrusion rod is slidably connected directly below the top of each longitudinal frame after rotating 90 degrees relative to the bottom rod. Vertical sliding frames are slidably connected longitudinally to the inner side of the longitudinal frames and the inner side of the L-shaped cavity. Each pair of top rods is fixedly connected to the top of the corresponding vertical sliding frame. The extrusion rod is fixedly connected to the top of the vertical sliding frame. Two extrusion frames are slidably connected to both sides of the outer wall of the lower mold. The lower bolt is installed through the outer wall of the extrusion frame. A pair of arc-shaped grooves are opened at the bottom of the lower platen. Four conversion plates are slidably connected to the inside of the L-shaped cavity, two positioning strips are slidably connected to the inside of the lower mold on both sides, four L-shaped positioning plates are fixedly connected between the positioning strips and the conversion plates, both sides of the conversion plates are inclined, a horizontal bar is slidably connected to the inside of the vertical moving frame, a return spring is fixedly connected between the outer wall of the horizontal bar and the inner wall of the vertical moving frame, both ends of the horizontal bar are set as smooth arc surfaces, four pairs of right angle blocks are provided, all four pairs of right angle blocks are set next to the horizontal bar, a pair of return springs are fixedly connected to the top of the vertical moving frame, and the top of the return springs are respectively fixedly connected to the inside of the corresponding longitudinal frame and the inside of the L-shaped cavity; A connecting frame is fixedly connected between each pair of right-angle blocks. The side wall of the extrusion frame is fixedly connected to the side wall of the connecting frame. The connecting frame is laterally slidably connected to the inside of the L-shaped cavity. The two ends of the arc groove are at different distances from the middle of the lower plate. The positioning rod is inserted into the inside of the arc groove. The bottom end of the positioning rod is fixedly connected to the bottom end of the positioning strip. By setting up a conversion mechanism, it can automatically adapt to the guide channel corresponding to the material width. When the wide material is fed horizontally, the top rod extends to support and position it. When the narrow material is fed vertically, the bottom rod extends synchronously to receive and guide it. This linkage structure ensures that after the stamping mode is switched, the iron sheet material always enters the stamping area along the correct path, avoiding stamping scrap caused by feeding deviation.

[0009] A stamping method for a segmented motor stator lamination oscillating stamping die includes the following steps; Step 1: The upper mold is rotated and adjusted. The angle of the upper plate is adjusted by the upper adjustment mechanism, which drives the punch cutting edge to rotate. After the adjustment is completed, the positions of the upper plate and the punch cutting edge are fixed. Step 2: The lower mold is rotated and adjusted. The angle of the lower platen is adjusted by the lower adjustment mechanism, which drives the concave die to rotate. After the adjustment is completed, the position of the lower platen is fixed to complete the adjustment, thereby enabling the punching of narrow iron sheets.

[0010] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this invention, a convertible stamping structure is adopted on the upper and lower dies, which can flexibly switch the stamping mode according to the width of the strip. When the strip is wide, a horizontal single punch is used, and when the strip is narrow, it is converted to a vertical single punch. Different specifications of raw materials can be adapted without changing the entire set of dies. This structure allows narrow silicon steel strips to be directly fed into the die to punch fan-shaped stator laminations, avoiding material waste and feeding deviation caused by adapting wide dies to narrow dies. At the same time, it eliminates the downtime waiting due to frequent disassembly and assembly of dies, realizes multi-purpose use of one die, and improves production changeover efficiency and equipment flexibility.

[0011] Secondly, in this invention, while the lower die changes the stamping direction, the corresponding bottom rod or top rod can be driven to extend or retract through the conversion mechanism, automatically adapting to the guide channel of the corresponding material width. When the wide material is fed laterally, the top rod extends to support and position it; when the narrow material is fed vertically, the bottom rod extends synchronously to receive and guide it. This linkage structure ensures that after the stamping mode is switched, the sheet metal always enters the blanking area along the correct path, avoiding blanking defects caused by feeding deviation. There is no need for manual adjustment of the guide mechanism one by one, which significantly shortens the changeover and debugging time and improves the automation level and multi-specification adaptability of the die. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the front of the stamping die of the present invention; Figure 2 This is a bottom-view perspective view of the upper stamping table and upper die structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the lower stamping platform and lower die of the present invention. Figure 4 This is a top-view three-dimensional structural diagram of the lower mold and lower platen after adjustment according to the present invention; Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the upper mold and upper platen of the present invention; Figure 6 This is a partial cross-sectional bottom view of the lower mold and lower platen of the present invention. Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the punch cutting edge, L-shaped rod, and rotating frame of the present invention. Figure 8 Appendix of the present invention Figure 7 A magnified view of the structure at point A in the middle; Figure 9 This is a schematic diagram of the partial cross-sectional three-dimensional structure of the lower mold of the present invention; Figure 10 This is a bottom-view three-dimensional structural diagram of the lower bolt, conversion plate, vertical sliding frame, and positioning strip of the present invention. Figure 11 This is a partial cross-sectional three-dimensional structural diagram of the vertical moving frame of the present invention; Figure 12 This is a partial three-dimensional structural diagram of the extrusion frame, connecting frame, and conversion plate of the present invention; Figure 13 This is a schematic diagram of the three-dimensional structure of a partial cross-section of the front of the lower mold of the present invention; Figure 14 This is a top-view partial cross-sectional three-dimensional structural diagram of the upper mold of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 1. Upper stamping table; 2. Lower stamping table; 3. Upper die; 4. Lower die; 5. Punch cutting edge; 6. Die opening; 7. Clamping plate; 8. Elastic support mechanism; 9. Connecting frame; 10. Upper plate; 11. Lower plate; 12. Arc groove; 13. Upper bolt; 14. Rotating frame; 15. L-shaped rod; 16. Guide frame; 17. Rotating groove; 18. Return spring; 19. Stamping frame; 20. Groove; 21. Sliding plate; 22. Extrusion plate; 23. 24. Round rod; 25. L-shaped block; 26. Upper rod; 27. Upper spring; 28. Return spring; 29. ​​Vertical groove; 20. Side frame; 31. Lower bolt; 32. Threaded hole; 33. L-shaped cavity; 34. Vertical moving frame; 35. Top rod; 36. Bottom rod; 37. Side plate; 38. Lower spring; 39. Conversion plate; 40. Extrusion frame; 41. Right-angle block; 42. Positioning rod; 43. Positioning strip; 44. L-shaped positioning plate; 45. Longitudinal frame; 46. Extrusion rod; 47. Horizontal rod.

[0015] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0016] The technical solutions of the present invention will now be described with reference to the accompanying drawings. It should be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also use other alternative methods to implement them. Moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0017] In practical use, it was found that existing stamping dies for segmented motor stators mostly adopt a fixed structure design. Silicon steel strip enters the die laterally, and after single-station punching, it is blanked to form a single arc-shaped stator blank. The positions of the punch cutting edge 5, the die opening 6, and the material guiding mechanism of this type of die are fixed, and it can only be adapted to a single material width and a horizontal single punching layout. When the specifications of the silicon steel coil change and the strip width decreases, the original horizontal single punching mode of the die cannot efficiently arrange the narrow strip. If longitudinal staggered punching is to be achieved to improve material utilization, the upper die 3 and the lower die 4 need to be replaced as a whole. This fixed structure results in poor die versatility. When changing production, it is necessary to repeatedly disassemble and debug, which not only increases the die reserve cost and die replacement time, but also causes the press downtime to be too long, making it difficult to adapt to the flexible production needs of multiple specifications and small batches. To solve the above problems, the following structure was invented.

[0018] like Figures 1 to 14As shown, an embodiment of the present invention provides a segmented motor stator lamination oscillating stamping die, including an upper stamping table 1, a lower stamping table 2, an upper die 3, and a lower die 4. The upper stamping table 1 is installed on the stamping end of the oscillating punch press, and the lower stamping table 2 is fixedly connected to the upper end of the oscillating punch press worktable. The upper stamping table 1 is located above the lower stamping table 2 and can reciprocate up and down relative to the lower stamping table 2. The upper die 3 is bolted to the bottom of the upper stamping table 1, and the lower die 4 is bolted to the top of the lower stamping table 2. The bottom end of the upper die 3 is provided with... There is a clamping plate 7, and an elastic support mechanism 8 is provided between the clamping plate 7 and the bottom end of the upper mold 3. The elastic support mechanism 8 is composed of a support column and a spring sleeved on its outer periphery. The top of the clamping plate 7 is rotatably connected to an upper plate 10, and a punch cutting edge 5 is slidably connected through the upper plate 10. The top of the lower mold 4 is rotatably connected to a lower plate 11, and a die opening 6 is provided through the top of the lower plate 11. The upper mold 3 is provided with an upper adjustment mechanism for adjusting the direction of the punch cutting edge 5, and the lower mold 4 is provided with a lower adjustment mechanism for adjusting the die opening 6. Before stamping, the upper stamping table 1 drives the upper die 3 to move down. The clamping plate 7 elastically presses the iron sheet under the action of the spring force to prevent the feeding from deviating. The upper stamping table 1 drives the upper die 3 to continue to move down, and drives the punch cutting edge 5 to continue to move down, thereby pressing the iron sheet between the punch cutting edge 5 and the die opening 6. During stamping, the support column guides and limits the movement and buffers and absorbs vibration. After stamping is completed, the spring drives the clamping plate 7 to reset, realizing stable pressing and elastic buffering.

[0019] The upper adjustment mechanism includes an upper bolt 13, a rotating frame 14, an L-shaped rod 15, and a guide frame 16. The rotating frame 14 is fixedly connected to the top of the upper platen 10. The bottom of the upper mold 3 has a quarter-circle arc-shaped rotating groove 17. The L-shaped rod 15 is rotatably connected to the inner side of the rotating groove 17. The bottom of the upper mold 3 is rotatably connected to a stamping frame 19. The L-shaped rod 15 is fixedly connected to the side wall of the stamping frame 19. The stamping frame 19 is fixedly connected to the top of the punch cutting edge 5. Both ends of the rotating groove 17 have grooves 20. A pair of guide frames 16 are provided. Both guide frames 16 are longitudinally slidably connected to the inner side of the grooves 20. The upper bolt 13 is threadedly connected to the upper platen 10 and the rotating frame 14. The inner side of the rotating frame 14 is longitudinally slidably connected to a sliding plate 21. A pair of extrusion plates 22 are fixedly connected to the top of the sliding plate 21. Round rods 23 are slidably connected to both sides of the outer wall of the rotating frame 14.

[0020] L-shaped blocks 24 are fixedly connected to the side of the round rod 23. Upper rods 25 are fixedly connected to the front and rear sides of the L-shaped blocks 24. The top two sides of the extrusion plate 22 are inclined. Upper springs 26 are fixedly connected between the side wall of the L-shaped block 24 and the inner side of the rotating frame 14. One of the upper rods 25 is inserted into one of the guide frames 16. The top of the upper bolt 13 is rotatably connected to the bottom of the sliding plate 21.

[0021] The L-shaped rod 15 has a vertical groove 28 on its side wall. A side frame 29 is longitudinally slidably connected to the inside of the vertical groove 28. Another round rod 23 is inserted into the side frame 29. With the setting of the vertical groove 28 and the groove 20, the clamping plate 7 will adhere to the surface of the iron sheet and cannot move downward. Thus, when the upper mold 3 drives the punch cutting edge 5 to press down, the guide frame 16 and the side frame 29 can slide in the vertical groove 28 and the groove 20, avoiding obstructing the normal movement of the upper mold 3. At the same time, the round rod 23 inserted into the side frame 29 and the guide frame 16 can simultaneously restrict the rotation position of the upper plate 10 and the stamping frame 19.

[0022] The lower adjustment mechanism includes lower bolts 30. L-shaped cavities 32 are provided on both sides of the inner wall of the lower mold 4. A pair of lower bolts 30 are provided, and the lower bolts 30 are threadedly connected to both sides of the outer wall of the lower mold 4. Four threaded holes 31 are provided at equal intervals on the outer wall of the lower platen 11. The lower bolts 30 are threadedly connected to the corresponding threaded holes 31. Two pairs of push rods 34 are provided on the inner side of each L-shaped cavity 32. The top of the push rods 34 is provided through the top of the lower mold 4. Four bottom rods 35 are provided through the top of the lower platen 11 (and it should be noted that the bottom of the clamping plate 7 is provided with corresponding insertion holes above the push rods 34 and bottom rods 35 to ensure that the upper mold 3 and the lower mold 4 are not obstructed by the push rods 34 and bottom rods 35 when they are combined). A conversion mechanism for adjusting the extension of the push rods 34 or the bottom rods 35 is also provided.

[0023] When adjusting to the narrow-piece stamping mode, first rotate the upper bolt 13 to move it downwards, which in turn pulls the sliding plate 21 downwards and simultaneously moves the extrusion plate 22 downwards, gradually releasing the pressure on the upper rod 25. Then, under the elastic force of the upper spring 26, the L-shaped block 24 is pushed to move towards the center, while the round rod 23 is pulled out from the guide frame 16 and the side frame 29, releasing the rotation restriction on the rotating frame 14 and the L-shaped rod 15. Subsequently, the upper plate 10 can be pushed to rotate on the clamping plate 7, while the punch cutting edge 5 and the stamping frame 19 rotate synchronously in the rotating groove 17, until the upper plate 10 is rotated. Rotate 90 degrees to change from a horizontal to a vertical position. Then, rotate the upper bolt 13 in the opposite direction to move it upward. At the same time, push the sliding plate 21 upward and drive the extrusion plate 22 to move upward. At this time, the upper rod 25 is squeezed to move to both sides by the inclined surfaces on both sides of the top of the extrusion plate 22 (since the L-shaped block 24 and the round rod 23 can only slide horizontally, the inclined surfaces of the extrusion plate 22 will squeeze the upper rod 25 to move to both sides when the extrusion plate 22 moves upward). At the same time, the upper spring 26 is compressed, thereby driving the round rod 23 to insert into the corresponding side frame 29 and guide frame 16, thus completing the adjustment of the punch cutting edge 5. Then unscrew the two lower bolts 30 to release the rotation restriction on the lower plate 11. Then you can push the lower plate 11 to rotate 90 degrees (note that the rotation direction of the lower plate 11 should be the same as the rotation direction of the upper plate 10). After the adjustment is completed, you can rotate the lower bolts 30 in the opposite direction to connect them to the corresponding threaded holes 31 to fix the position of the lower plate 11.

[0024] In summary, through the above structural design, a convertible stamping structure is adopted on the upper die 3 and the lower die 4. The stamping mode can be flexibly switched according to the strip width. When the material is wide, a horizontal single punch is used, and when the material is narrow, it is converted to a vertical single punch. Different specifications of raw materials can be adapted without changing the entire set of dies. This structure allows narrow silicon steel strips to be directly fed into the die to punch fan-shaped stator laminations, avoiding material waste and feeding deviation caused by adapting wide dies to narrow dies. At the same time, it eliminates the downtime waiting due to frequent die disassembly and assembly, realizes multi-purpose use of one die, and improves production changeover efficiency and equipment flexibility.

[0025] Based on the above embodiments, it was found during use that the lower die 4 of the above stamping die is equipped with guide posts for the iron sheet to ensure the stability of the iron sheet during the stamping process. However, when the raw material specifications change, the guide posts on the lower die 4 cannot be adjusted synchronously with the cutting edge. They must be manually disassembled and adjusted one by one. This separate structure leads to a long production changeover cycle, difficulty in quickly aligning the feeding and positioning, and easy to cause stamping defects due to guide deviation. In order to solve the above problems, further improvements were made to the above structure.

[0026] The lower plate 11 has movable slots on both sides of the outer wall of the four bottom rods 35. The outer wall of the bottom rods 35 is fixedly connected to the side plates 36 that are slidably connected in the movable slots. The top of the side plate 36 is fixedly connected to the top of the movable slot. The lower spring 37 and the side plate 36 are designed to ensure that the bottom rods 35 are stored in the lower plate 11 and can only be extended when the extrusion rod 45 pushes them to guide the narrow iron sheet.

[0027] The conversion mechanism includes a conversion plate 38, an extrusion frame 39, a right-angled block 40 with an inclined surface, a positioning rod 41, a positioning strip 42, an L-shaped positioning plate 43, and a longitudinal frame 44. Each extrusion frame 39, positioning rod 41, and positioning strip 42 is provided in pairs. Each conversion plate 38, longitudinal frame 44, and L-shaped positioning plate 43 is provided in fours. Each of the four longitudinal frames 44 is fixedly connected to the inner side of the lower mold 4. After the top of the longitudinal frame 44 is rotated 90 degrees relative to the bottom rod 35, an extrusion rod 45 is slidably connected directly below it. Vertical sliding frames 33 are slidably connected to the inner side of the longitudinal frame 44 and the inner side of the L-shaped cavity 32. Each pair of top rods 34 is fixedly connected to the top of the corresponding vertical sliding frame 33. The extrusion rod 45 is fixedly connected to the top of the vertical sliding frame 33. Two extrusion frames 39 are slidably connected to both sides of the outer wall of the lower mold 4. The lower bolt 30 is set through the outer wall of the extrusion frame 39. A pair of arc-shaped grooves 12 are opened at the bottom of the lower plate 11.

[0028] Four conversion plates 38 are slidably connected to the inside of the L-shaped cavity 32. Two positioning strips 42 are slidably connected to the inside of the lower mold 4 on both sides. Four L-shaped positioning plates 43 are fixedly connected between the positioning strips 42 and the conversion plates 38. Both sides of the conversion plates 38 are inclined. A horizontal bar 46 is slidably connected to the inside of the vertical moving frame 33. A return spring 27 is fixedly connected between the outer wall of the horizontal bar 46 and the inner wall of the vertical moving frame 33. Both ends of the horizontal bar 46 are set as smooth arc surfaces. Four pairs of right angle blocks 40 are set. The four pairs of right angle blocks 40 are all set next to the horizontal bar 46. A pair of return springs 18 are fixedly connected to the top of the vertical moving frame 33. The top of the return springs 18 are fixedly connected to the inside of the corresponding longitudinal frame 44 and the inside of the L-shaped cavity 32 respectively.

[0029] A connecting frame 9 is fixedly connected between each pair of right-angle blocks 40. The side wall of the extrusion frame 39 is fixedly connected to the side wall of the connecting frame 9. The connecting frame 9 is laterally slidably connected to the inside of the L-shaped cavity 32. The two ends of the arc groove 12 are at different distances from the middle of the lower plate 11. The positioning rod 41 is inserted into the inside of the arc groove 12. The bottom end of the positioning rod 41 is fixedly connected to the bottom end of the positioning strip 42.

[0030] During the adjustment of the die opening angle 6, unscrewing the lower bolt 30 releases the pressure on the extrusion frame 39. Then, pulling out the extrusion frame 39 causes the connecting frame 9 and the right-angle block 40 to move together. Moving the right-angle block 40 away from the horizontal bar 46 releases the pressure on the horizontal bar 46. Subsequently, under the force of the return spring 18, the vertical moving frame 33 moves downwards, causing the horizontal bar 46 to move downwards, which in turn causes the top rod 34 to move downwards (at this time, the bottom rod 35 is in the retracted state). Then, the lower plate 11 can be rotated. During this process, the arc groove 12 on the lower plate 11 will rotate. As the distance between the two ends of the arc groove 12 and the middle of the lower plate 11 gradually decreases, the arc groove 12 will be squeezed on the inclined surface of the arc groove 12, which will gradually pull the positioning rod 41 and the positioning strip 42 to move towards the middle. At the same time, the L-shaped positioning plate 43 will drive the conversion plate 38 to move. At this time, the conversion plate 38 will be removed from the cross bar 46 below the top rod 34, releasing the compression of the cross bar 46. Then, the cross bar 46 will be pushed backward to reset by the elastic force of the reset spring 27. At the same time, the inclined surface at the other end of the conversion plate 38 will press the crossbar 46 below the bottom rod 35, thereby gradually pushing the crossbar 46 forward and compressing the corresponding return spring 27 (so that the crossbar 46 below the bottom rod 35 extends and the crossbar 46 below the top rod 34 retracts). Then, the lower bolt 30 can be rotated in the opposite direction to connect to the corresponding threaded hole 31. During this process, the extrusion frame 39 will be locked on the lower mold 4, and then the right-angle block 40 will be moved by the connecting frame 9. The inclined plane will press against the outer wall of the horizontal bar 46 below the bottom bar 35, thereby pushing the horizontal bar 46 and the vertical moving frame 33 to move upward in the longitudinal frame 44. At the same time, it will drive the pressing rod 45 to slide upward and compress the return spring 18. At this time, the pressing rod 45 will move upward, thereby pushing the bottom bar 35 to move upward and driving the side plate 36 to move upward. Simultaneously, it will compress the lower spring 37, thereby causing the bottom bar 35 to extend and play a guiding role for the narrow iron sheet, realizing the adaptive adjustment of the guiding structure. When it is necessary to adjust to the wide iron sheet punching mode, the above operation can be repeated in reverse.

[0031] In summary, through the design of the above structure, while the lower die 4 changes the stamping direction, the corresponding bottom rod 35 or top rod 34 can be driven to extend or retract through the conversion mechanism, automatically adapting to the guide channel of the corresponding material width. When the wide material is fed laterally, the top rod 34 extends to support and position it; when the narrow material is fed vertically, the bottom rod 35 extends synchronously to receive and guide it. This linkage structure ensures that after the stamping mode is switched, the iron sheet material always enters the blanking area along the correct path, avoiding blanking scrap caused by feeding deviation. It eliminates the need for manual adjustment of the guide mechanism one by one, significantly shortens the changeover and debugging time, and improves the automation level and multi-specification adaptability of the die.

[0032] A stamping method for a segmented motor stator lamination oscillating stamping die includes the following steps; Step 1: Rotate and adjust the upper mold 3. Adjust the angle of the upper plate 10 through the upper adjustment mechanism and drive the punch cutting edge 5 to rotate. After the adjustment is completed, fix the positions of the upper plate 10 and the punch cutting edge 5. Step 2: Rotate and adjust the lower mold 4. Adjust the angle of the lower platen 11 through the lower adjustment mechanism, and drive the die opening 6 to rotate. After the adjustment is completed, fix the position of the lower platen 11 to complete the adjustment, and then the narrow iron sheet can be punched.

[0033] This invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit and scope of this invention. In order to give the public a thorough understanding of this invention, specific details are described in detail in the preferred embodiments of this invention. However, those skilled in the art can fully understand this invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion about the essence of this invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A segmented motor stator lamination oscillating stamping die, characterized in that, The device includes an upper stamping table, a lower stamping table, an upper die, and a lower die. The upper stamping table is installed on the stamping end of the oscillating punch press, and the lower stamping table is fixedly connected to the upper end of the oscillating punch press worktable. The upper stamping table is located above the lower stamping table and can reciprocate up and down relative to the lower stamping table. The upper die is bolted to the bottom of the upper stamping table, and the lower die is bolted to the top of the lower stamping table. The bottom end of the upper die is provided with a clamping plate, and an elastic support mechanism is provided between the clamping plate and the bottom end of the upper die. The top end of the clamping plate is rotatably connected to an upper plate, and a punch cutting edge is slidably connected through the upper plate. The top end of the lower die is rotatably connected to a lower plate, and a die opening is provided through the top end of the lower plate. The upper die is provided with an upper adjustment mechanism for adjusting the direction of the punch cutting edge, and the lower die is provided with a lower adjustment mechanism for adjusting the die opening. The upper adjustment mechanism includes an upper bolt, a rotating frame, an L-shaped rod, and a guide frame. The rotating frame is fixedly connected to the top of the upper platen. The bottom of the upper mold has a quarter-circle rotating groove. The L-shaped rod is rotatably connected to the inside of the rotating groove. A stamping frame is rotatably connected through the bottom of the upper mold. The L-shaped rod is fixedly connected to the side wall of the stamping frame. The stamping frame is fixedly connected to the top of the punch cutting edge. Grooves are provided at both ends of the rotating groove. A pair of guide frames are provided. Both guide frames are longitudinally slidably connected to the inside of the grooves. The upper bolt is threaded through and connected to the inside of the upper platen and the rotating frame. A sliding plate is longitudinally slidably connected to the inside of the rotating frame. A pair of extrusion plates are fixedly connected to the top of the sliding plate. Round rods are slidably connected through both sides of the outer wall of the rotating frame. L-shaped blocks are fixedly connected to the sides of the round rods. Upper rods are fixedly connected to the front and rear sides of the L-shaped blocks. The top sides of the extrusion plate are inclined. Upper springs are fixedly connected between the side wall of the L-shaped block and the inner side of the rotating frame. One of the upper rods is inserted into one of the guide frames. The top of the upper bolt is rotatably connected to the bottom of the sliding plate. A vertical groove is opened on the side wall of the L-shaped rod. A side frame is slidably connected to the inner side of the vertical groove. The other round rod is inserted into the side frame. The lower adjustment mechanism includes lower bolts. L-shaped cavities are opened on both sides of the inner wall of the lower mold. A pair of lower bolts are provided. The lower bolts are threadedly connected to both sides of the outer wall of the lower mold. Four threaded holes are equally spaced on the outer wall of the lower platen. The lower bolts are threadedly connected to the corresponding threaded holes. Two pairs of push rods are provided on the inner side of each L-shaped cavity. The top of the push rods is set through the top of the lower mold. Four bottom rods are set through the top of the lower platen. A conversion mechanism for adjusting the extension of the push rods or the extension of the bottom rods is also provided. The lower plate has movable grooves on both sides of the outer wall of the four base rods. The outer wall of each base rod is fixedly connected to a side plate that is slidably connected in the movable groove. A lower spring is fixedly connected between the top of the side plate and the top of the movable groove.

2. The segmented motor stator lamination oscillating stamping die according to claim 1, characterized in that, The conversion mechanism includes a conversion plate, an extrusion frame, a right-angled block with an inclined surface, a positioning rod, a positioning strip, an L-shaped positioning plate, and a longitudinal frame. Each extrusion frame, positioning rod, and positioning strip is provided in pairs. Each conversion plate, longitudinal frame, and L-shaped positioning plate is provided in fours. All four longitudinal frames are fixedly connected to the inner side of the lower mold. An extrusion rod is slidably connected directly below the top of each longitudinal frame after rotating 90 degrees relative to the bottom rod. Vertical sliding frames are slidably connected longitudinally to the inner side of both the longitudinal frames and the inner side of the L-shaped cavity. Each pair of top rods is fixedly connected to the top of the corresponding vertical sliding frame. The extrusion rod is fixedly connected to the top of the vertical sliding frame. Two extrusion frames are slidably connected to both sides of the outer wall of the lower mold. The lower bolt is installed through the outer wall of the extrusion frame. A pair of arc-shaped grooves are opened at the bottom end of the lower platen.

3. The segmented motor stator lamination oscillating stamping die according to claim 2, characterized in that, Four conversion plates are slidably connected to the inside of the L-shaped cavity. Two positioning strips are slidably connected to the inner walls of the lower mold. Four L-shaped positioning plates are fixedly connected between the positioning strips and the conversion plates. Both sides of the conversion plates are inclined. A horizontal bar is slidably connected to the inside of each vertical moving frame. A return spring is fixedly connected between the outer wall of the horizontal bar and the inner wall of the vertical moving frame. Both ends of the horizontal bar are set as smooth arc surfaces. Four pairs of right-angle blocks are provided. The four pairs of right-angle blocks are all located next to the horizontal bar. A pair of return springs are fixedly connected to the top of each vertical moving frame. The tops of the return springs are respectively fixedly connected to the inner side of the corresponding longitudinal frame and the inner side of the L-shaped cavity.

4. A segmented motor stator lamination oscillating stamping die according to claim 2, characterized in that, A connecting frame is fixedly connected between each pair of right-angled blocks. The side wall of the extrusion frame is fixedly connected to the side wall of the connecting frame. The connecting frame is laterally slidably connected to the inside of the L-shaped cavity. The two ends of the arc groove are at different distances from the middle of the lower plate. The positioning rod is inserted into the inside of the arc groove. The bottom end of the positioning rod is fixedly connected to the bottom end of the positioning strip.

5. A stamping method for a segmented motor stator lamination oscillating stamping die, the method being applicable to the segmented motor stator lamination oscillating stamping die according to any one of claims 1-4, characterized in that, Includes the following steps; Step 1: The upper mold is rotated and adjusted. The angle of the upper plate is adjusted by the upper adjustment mechanism, which drives the punch cutting edge to rotate. After the adjustment is completed, the positions of the upper plate and the punch cutting edge are fixed. Step 2: The lower mold is rotated and adjusted. The angle of the lower platen is adjusted by the lower adjustment mechanism, which drives the concave die to rotate. After the adjustment is completed, the position of the lower platen is fixed to complete the adjustment, thereby enabling the punching of narrow iron sheets.

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