Stamping and renovating integrated device for arc chute

Abstract

The invention relates to the technical field of arc chutes, and discloses an arc chute sheet stamping and trimming integrated device which comprises an upper die and a lower die, a notch stamping male die and an integral stamping male die are installed on the upper die, and a notch stamping female die, an integral stamping female die and a discharging female die are correspondingly arranged on the lower die. Mounting grooves and first discharging grooves are formed in the inner wall of the integral stamping female die at intervals, shaping grooves and positioning blocks are arranged in the integral stamping female die at intervals, floating shaping cushion pieces are mounted in the shaping grooves, and second discharging grooves are formed in the inner wall of the discharging female die; a material belt is dynamically jacked and controllable back pressure is provided during blanking through the floating shaping cushion piece, so that co-extrusion renovation is completed on the edge of the arc extinguishing grid piece in a three-direction pressure stress state, burrs are effectively flattened, collapse corners are reduced, thin plate warping is remarkably corrected, and the edge quality and electrical safety of a finished product are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of arc extinguishing grid technology, specifically to an integrated stamping and repair device for arc extinguishing grid sheets. Background Technology

[0002] Arc-extinguishing grids are key electrical insulation and arc-extinguishing components in power equipment, and have wide applications in power electronics, low-voltage electrical appliances and other fields.

[0003] The manufacturing process of arc-extinguishing grids typically involves multi-station progressive die stamping processes, including notch blanking, contour blanking, and shaping. During conventional stamping, burrs often form on the edges of parts due to the tearing effect generated when the punch shears the material, especially in the processing of silicon steel sheets. These burrs not only affect the appearance quality of the product, but may also cause electrical short circuits or reduce assembly accuracy.

[0004] Traditional methods remove burrs by adding a subsequent grinding process, but this not only increases production costs but also reduces production efficiency. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an integrated stamping and repair device for arc-extinguishing grid plates.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An integrated stamping and finishing device for arc-extinguishing grid plates includes an upper die and a lower die. The upper die has a notched stamping punch and a solid stamping punch installed sequentially along the material feed direction. The lower die has a notched stamping die, a solid stamping die, and a discharge die. The inner wall of the solid stamping die has a spaced-apart mounting groove and a first discharge groove. The solid stamping die also has a spaced-apart forming groove and a positioning block. A floating forming pad is installed in the forming groove. The inner wall of the discharge die has a second discharge groove. The device further includes: a force-bearing block, slidably installed in the mounting groove to support the floating forming pad; and a first pusher plate, slidably connected in the forming groove and corresponding to the first discharge groove. A guide post is fixedly installed on the upper die, and a guide groove is correspondingly provided on the lower die.

[0007] To achieve reliable resetting and stroke limiting of the floating shaping pad, preferably, the floating shaping pad includes a shaping plate and a connecting pin, the shaping plate and the connecting pin are fixedly connected, the connecting pin has a limiting part, the shaping groove has a cavity to accommodate the limiting part, and a first spring is sleeved on the connecting pin, the two ends of the first spring are fixed to the bottom surface of the shaping plate and the shaping groove, respectively.

[0008] To form a dynamic fulcrum and prevent the support plate from rotating downwards, the support plate provides back pressure support to the forming plate during punching, reducing the warping of the thin plate of the grid sheet. Furthermore, the force-bearing block includes a sliding seat, on which the support plate is hinged, and one end of the support plate extends through the opening of the mounting groove; wherein, an abutment block is fixedly installed on the support plate, and the abutment block contacts the sliding seat.

[0009] To achieve automatic driving of the force-bearing block, a special-shaped groove is provided in the integral stamping die. A first wedge rod and a second wedge rod are slidably installed in the special-shaped groove. A third spring is fixedly connected between the second wedge rod and the inner sidewall of the special-shaped groove. A second toothed groove is provided on the first wedge rod. A second gear is installed in the integral stamping die, and the second gear meshes with the second toothed groove.

[0010] To further improve the reset reliability and motion stability of the force-bearing block, a second spring is connected between the sliding seat and the inner sidewall of the mounting groove. A sliding rod is fixedly installed on the top surface of the mounting groove. An inclined groove is provided on the support plate. The end of the sliding rod passes through the inclined groove and abuts against the bottom surface of the inclined groove. The side of the irregular rod near the opening of the mounting groove has a first inclined surface, and the second abutment block has a second inclined surface corresponding to the irregular rod.

[0011] To enhance the synchronization and locking performance of the forming action, a shaped groove is further provided inside the integral stamping die. A first wedge rod and a second wedge rod are slidably installed in the shaped groove. The second wedge rod is simultaneously slidably inserted into the connecting pin and fixedly connected to the inner sidewall of the shaped groove by a third spring. A second toothed groove is provided on the first wedge rod. A second gear is installed on the horizontal shaft, and the second gear meshes with the second toothed groove.

[0012] In order to effectively limit the downward stroke of the floating shaping pad and prevent it from sinking excessively and affecting the flatness of the feeding, preferably, a limiting pin is fixedly installed on the inner wall of the integral stamping die, and the limiting pin is located below the first feeding groove.

[0013] To achieve automatic discharge of the finished product after punching, preferably, a pull block and a first limiting seat are provided on one side of the integral stamping die, a guide rod is fixedly connected between the push plate and the pull block, a sixth spring is fixedly connected between the pull block and the limiting seat, symmetrically arranged slots are opened in the pull block, the slots have a third inclined surface, and a corresponding insert rod is installed on the upper die, the insert rod has a fourth inclined surface corresponding to the slot.

[0014] To ensure that the metal strip remains centered during feeding and automatically avoids wide-width punching blades during punching, preferably, both sides of the integral stamping die are provided with relief grooves, relief plates are slidably connected in the relief grooves, a fourth spring is connected between the relief grooves and the relief plates, and a fifth inclined surface is provided on the lower side of the side of the relief plate that extends out of the relief groove.

[0015] To further improve the material discharge system and form a dual-channel material discharge mechanism, a push block is provided on one side of the material discharge cavity, and a second push plate is fixedly installed on the push block. The second push plate is correspondingly installed in the second discharge groove. A second limiting seat is fixedly installed on the lower mold, and a fifth spring is fixedly connected between the push block and the second limiting seat. A rotating plate is rotatably installed in the second limiting seat, and one lower end of the rotating plate contacts the push block. A pressure plate is connected to the lower side of the upper mold. The downward movement of the pressure plate drives the rotating plate to rotate, thereby pushing the second push plate to move towards the material discharge cavity.

[0016] The beneficial effects of this invention are: 1. By using floating shaping pads to dynamically lift the strip during punching and provide controllable back pressure, the edge of the arc-extinguishing grid sheet is co-extruded and repaired under triaxial compressive stress, effectively flattening burrs, reducing corner collapse, and significantly correcting the warping of thin plates, thereby greatly improving the edge quality and electrical safety of the finished product.

[0017] 2. The first and second feeding troughs, which work together with the first and second feeding plates, are used to construct a dual-channel feeding system of top-out and side-discharge. This ensures that the arc-extinguishing grid sheets after punching can be reliably discharged whether they are in the main station or the downstream station, avoiding jamming and accumulation, and improving feeding stability and production continuity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the basic structure of the present invention; Figure 2 This is a schematic diagram of the upper mold structure of the present invention; Figure 3 This is a schematic diagram of the overall stamping die structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the overall stamping die of the present invention; Figure 5 for Figure 4 Enlarged view of the A-structure; Figure 6 This is a schematic diagram of the location structure of the mounting slot in this invention; Figure 7 for Figure 6 Enlarged view of the B-structure; Figure 8 This is a schematic diagram of the force-bearing block structure of the present invention; Figure 9 This is a schematic diagram of the first wedge-shaped rod structure of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Upper die; 11. Notched punch; 12. Integral punch; 121. Cutting knife; 122. Clamping plate; 13. Guide post; 131. Toothed groove one; 14. Insert rod; 15. Pressure plate; 2. Lower die; 21. Notched stamping die; 22. Integral stamping die; 221. Mounting slot; 222. First blanking slot; 223. Shaping slot; 224. Positioning block; 225. Slide groove; 226. Irregular groove; 227. Relief groove; 23. Discharge die; 231. Second blanking slot; 24. Limit pin; 25. Relief plate; 26. Fourth spring; 27. Second limit seat; 271. Rotating plate; 201. Guide groove; 3. Floating shaping pad; 31. Shaping plate; 32. Connecting pin; 321. Limiting part; 33. First spring; 34. Second wedge rod; 341. Third spring; 4. Force-bearing block; 41. Sliding seat; 411. Second spring; 42. Support plate; 421. Inclined groove; 43. Abutting block one; 44. Irregular rod; 45. Abutting block two; 46. Horizontal shaft; 47. Drive wheel; 48. Gear one; 49. Slide rod; 5. First push plate; 6. First wedge-shaped rod; 61. Second tooth groove; 62. Second gear; 7. Pull block; 71. Guide rod; 72. Slot; 8. First limiting seat; 81. Sixth spring; 9. Push block; 91. Second push plate; 92. Fifth spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example: Figure 1 - Figure 9 As shown, this invention relates to an integrated stamping and finishing device for arc-extinguishing grids, comprising an upper die 1 mounted on a press slide, which moves up and down with the stroke, and a lower die 2 fixed to the press worktable, which cooperates with the upper die 1 to complete multi-station stamping and finishing. The upper die 1 is sequentially equipped with a notched stamping punch 11 and a solid stamping punch 12 along the material feed direction. The notched stamping punch 11 is used to punch a process notch on one side of the arc-extinguishing grid, and the solid stamping punch 12 is used for final contour cutting to form a complete grid. A guide post 13 is fixedly mounted on the upper die 1, comprising a main positioning post and a secondary positioning post, vertically arranged on the upper die 1 for mold closing guidance. The lower die 2 is correspondingly provided with a notched stamping die 2. 1. The integral stamping die 22 and the discharge die 23 are the core finishing area in the lower die 2. The integral stamping die 22 has an installation groove 221 and a first discharge groove 222 spaced apart on its inner wall. The first discharge groove 222 is connected to the outside of the die and is used for the first discharge of the complete grid sheet. The integral stamping die 22 has a forming groove 223 and a positioning block 224 spaced apart on its inner wall. A floating forming pad 3 is installed in the forming groove 223. The discharge die 23 is located downstream of the integral stamping station. The discharge die 23 has a second discharge groove 231 on its inner wall for the second discharge of the complete grid sheet. A guide groove 201 is correspondingly provided on the lower die 2 and slides with the guide post 13 to ensure the mold closing accuracy.

[0023] It also includes: a force-bearing block 4, which is slidably installed in the mounting groove 221 to support the floating shaping pad 3; and a first pusher plate 5, which is slidably connected in the shaping groove 223 and corresponds to the first unloading groove 222, and can push out the complete grid sheet to one side after the mold is opened.

[0024] In this embodiment, the integral stamping die 22 and the discharge die 23 are collinear to achieve continuous conveying of metal strip. The second discharge groove 231 penetrates the side wall of the discharge die 23 and connects to the external material collection box of the mold. Together with the first pusher plate 5, it forms a dual-channel discharge system of ejection and side discharge.

[0025] In stage one, the upper mold 1 is in a high position, and the floating shaping pad 3 is constrained by the first push plate 5 and stored in the shaping groove 223. At this time, the first push plate 5 is flush with the surface of the positioning block 224, which facilitates the advancement of the metal strip without step interference. In stage two, the upper mold 1 moves downward. First, the first push plate 5 is pulled to one side. Second, the guide post 13 enters the guide groove 201 to ensure centering. After the floating shaping pad 3 is no longer constrained by the first push plate 5, it pops out from the shaping groove 223. Then, the bottom is supported by the force block 4. At this time, the surface of the floating shaping pad 3 is higher than the positioning block 224. In stage three, the notched punch 11 and the notched punch die 21 cooperate to punch out a process notch on the strip. The integral punch 12 begins to punch. During the punching process, the floating shaping pad 3 provides additional back pressure. After the punch is sheared, it continues to apply a small overpressure, so that the material edge is in a triaxial compressive stress state and plastic flow occurs, thereby effectively flattening burrs, reducing corner collapse, and correcting the warping of the thin plate. Finally, the upper mold 1 begins to rise, the force block 4 retracts, the floating shaping pad 3 descends and resets, the first push plate 5 also resets and pushes the complete grid sheet located on the floating shaping pad 3 after punching into the first discharge groove 222. The arc-extinguishing grid sheet remaining in the integral stamping die 22 enters the discharge die 23 under the push of the rear strip, and then discharges through the second discharge groove 231.

[0026] It should be noted that the integral stamping punch 12 includes a punching cutter 121 and a clamping plate 122. The punching cutter 121 and the clamping plate 122 are arranged alternately, and the height of the punching cutter 121 is higher than the height of the clamping plate 122. The arc extinguishing grid sheet can be punched into the corresponding floating shaping pad 3 through the punching cutter 121.

[0027] Reference Figure 3 - Figure 9 The floating shaping pad 3 includes a shaping plate 31 and a connecting pin 32. The shaping plate 31 is a high-hardness flat plate, and its top surface is used to support the bottom of the arc-extinguishing grid plate. The shaping plate 31 and the connecting pin 32 are fixedly connected. Furthermore, a limiting pin 24 is fixedly installed on the inner wall of the integral stamping die 22. The limiting pin 24 is located below the first feeding groove 222 and is used to limit the downward stroke of the shaping plate 31. The connecting pin 32 has a limiting part 321. The shaping groove 223 has a cavity to accommodate the limiting part 321. A first spring 33 is sleeved on the connecting pin 32. The two ends of the first spring 33 are fixed to the shaping plate 31 and the bottom surface of the shaping groove 223, respectively.

[0028] The force-bearing block 4 includes a rectangular sliding seat 41, on which a support plate 42 is hinged. One end of the support plate 42 passes through the opening of the mounting groove 221 and is used to push the bottom of the shaping plate 31. It should be noted that an abutment block 43 is fixedly installed on the support plate 42. The abutment block 43 contacts the sliding seat 41 and forms a dynamic fulcrum to prevent the support plate 42 from rotating downward.

[0029] During punching, the support plate 42 provides back pressure support to the forming plate 31, reducing the warping of the thin plate of the grid sheet.

[0030] Reference Figure 4 and Figure 5 The bottom surface of the mounting groove 221 is provided with a sliding groove 225, and a special-shaped rod 44 is slidably installed in the sliding groove 225. A second abutment block 45 is fixedly installed on the support plate 42. A toothed groove 131 is provided on the guide post 13. It should be noted that the toothed groove 131 is provided on the secondary positioning post. A horizontal shaft 46 and a drive wheel 47 are correspondingly installed in the sliding groove 225. The toothed groove 131 is meshed with the drive wheel 47. A gear 48 is installed on the horizontal shaft 46. The gear 48 is meshed with the special-shaped rod 44.

[0031] A second spring 411 is connected between the sliding seat 41 and the inner side wall of the mounting groove 221. A sliding rod 49 is fixedly installed on the top surface of the mounting groove 221. An inclined groove 421 is opened on the support plate 42. The end of the sliding rod 49 passes through the inclined groove 421 and abuts against the bottom surface of the inclined groove 421. The side of the irregular rod 44 near the opening of the mounting groove 221 is provided with a first inclined surface, and the second abutment block 45 has a second inclined surface corresponding to the irregular rod 44.

[0032] During mold closing, the upper mold 1 moves downward, and the secondary positioning pin inserts into the guide groove 201. Its toothed groove 131 meshes with the drive wheel 47, which drives the horizontal shaft 46 to rotate. The gear 48 on the horizontal shaft 46 drives the shaped rod 44 to move along the slide groove 225 towards the opening of the sliding mounting groove 221. The first inclined surface of the shaped rod 44 pushes the second inclined surface of the abutment block 45, causing the support plate 42 to rotate counterclockwise around the hinge point. Then, the vertical surface of the shaped rod 44 abuts against the vertical surface of the abutment block 45 for positioning. During mold parting, the secondary positioning pin inserts into the guide groove 201. The gear 131 on the shaft engages with the drive wheel 47, which drives the horizontal shaft 46 to rotate in the opposite direction. The gear 48 on the horizontal shaft 46 drives the shaped rod 44 to slide along the slide groove 225 to the other side. At this time, the shaped rod 44 pulls the support plate 42 and the sliding seat 41 to move together. The second spring 411 is compressed. As the support plate 42 continues to move, the sliding rod 49 is gradually pressed into the inclined groove 421, which presses the support plate 42 to rotate around the axis, releasing the contact with the shaped rod 44. The sliding seat 41 is reset under the action of the second spring 411, preparing for the next mold closing.

[0033] Furthermore, a shaped groove 226 is provided inside the integral stamping die 22. A first wedge rod 6 and a second wedge rod 34 are slidably installed in the shaped groove 226. The two slide in conjunction. The second wedge rod 34 is simultaneously slidably inserted into the connecting pin 32 and fixedly connected to the inner side wall of the groove 226 by a third spring 341. A toothed groove 61 is provided on the first wedge rod 6. A gear 62 is installed inside the integral stamping die 22. Specifically, the gear 62 is installed on the horizontal shaft 46 near the pull block 7. The gear 62 meshes with the toothed groove 61.

[0034] When the support plate 42 moves to both sides, the gear 62 drives the first wedge rod 6, which is engaged, to move upward and release the second wedge rod 34 that is in contact with it. The second wedge rod 34 pulls the connecting pin 32 and the shaping plate 31 to move downward as a whole, returning to the original position before punching. At this time, the complete grid sheet after punching corresponds to the first feeding groove 222.

[0035] Reference Figure 1 and Figure 4 A pull block 7 and a first limiting seat 8 are provided on one side of the integral stamping die 22. A guide rod 71 is fixedly connected between the first push plate 5 and the pull block 7. A sixth spring 81 is fixedly connected between the pull block 7 and the first limiting seat 8. In the non-working state, the sixth spring 81 pushes the pull block 7 to one side of the integral stamping die 22. A symmetrically arranged slot 72 is opened in the pull block 7. The slot 72 has a third inclined surface. A corresponding insert rod 14 is installed on the upper die 1. The insert rod 14 has a fourth inclined surface corresponding to the slot 72.

[0036] When the mold is closed, the insert rod 14 is inserted into the slot 72, and the pull block 7 is pushed outward by the inclined surface. After the upper mold 1 reaches the bottom dead center, the first push plate 5 is completely housed in the integral stamping die 22. As the stamping is completed, the sixth spring 81 releases its stored energy, the pull block 7 is reset, and the first push plate 5 pushes the arc-extinguishing grid plate finished product located above the forming groove 223 into the first discharge groove 222 to achieve automatic discharge.

[0037] Reference Figure 4 The integral stamping die 22 has relief grooves 227 on both sides of the die. Relief plates 25 are slidably connected in the relief grooves 227. A fourth spring 26 is connected between the relief grooves 227 and the relief plates 25. A fifth inclined surface is provided on the side of the relief plate 25 that extends out of the relief grooves 227. This surface is used to clamp and limit the metal strip under normal conditions to prevent it from shifting laterally during feeding. In this embodiment, the width of the punching blade 121 is designed to be greater than that of the clamping plate 122. Therefore, when the punching blade 121 moves downward, it cannot pass directly through the gap between the relief plates 25. It must first trigger the relief action. The relief plates 25 gradually withdraw from the punching area, expanding the width of the middle channel. When the relief plates 25 are completely withdrawn to the limit position, the punching blade 121 obtains enough space to continue moving downward to complete the contour punching, thus achieving automatic avoidance.

[0038] A push block 9 is provided on one side of the discharge die 23. A second push plate 91 is fixedly installed on the push block 9. The second push plate 91 is installed in the second discharge groove 231. A second limit seat 27 is fixedly installed on the lower die 2. A fifth spring 92 is fixedly connected between the push block 9 and the second limit seat 27. A rotating plate 271 is rotatably installed in the second limit seat 27. One end of the lower side of the rotating plate 271 contacts the push block 9. A pressure plate 15 is connected to the lower side of the upper die 1. The pressure plate 15 moves downward to drive the rotating plate 271 to rotate, thereby pushing the second push plate 91 to move towards the discharge die 23.

[0039] When the mold is closed, the pressure plate 15 contacts the upper end of the rotating plate 271 and presses down. The rotating plate 271 rotates around the pin shaft. The lower end of the rotating plate 271 pushes the push block 9 outward to overcome the elastic force of the fifth spring 92, causing the push block 9 to slide. The second push plate 91 then extends out from the discharge die 23, pushing the finished part located in the discharge die 23 into the second discharge groove 231 to achieve discharge.

[0040] Working principle: The strip is first pushed into the notched stamping die 21, where it cooperates with the notched stamping punch 11 to punch a process notch in the strip. Then, it is pushed into the integral stamping die 22. The relief plates 25 on both sides clamp and limit the metal strip under normal conditions to prevent lateral displacement during feeding. The integral stamping punch 12 begins punching. During punching, the insert rod 14 is inserted into the slot 72, and the inclined plane pushes the pull block 7 outwards. After the upper die 1 reaches the bottom dead center, the first pusher plate 5 is completely retracted into the integral stamping die 22. After the forming plate 31 is freed from the constraint of the first pusher plate 5, it pops out from the forming groove 223 and pushes the support plate 42 to flip. Then the bottom is supported by the support plate 42, providing additional back pressure. When the punching knife 121 moves down, the retracting plate 25 gradually exits the punching area, widens the middle channel, opens the punching channel, and the overall punching punch 12 completes the contour punching. After the punch is sheared, it continues to apply a small overpressure, so that the material edge is in a triaxial compressive stress state, and plastic flow occurs, thereby effectively flattening burrs, reducing corner collapse, and correcting the warping of the thin plate. During mold opening, the secondary positioning post is inserted and separated from the guide groove 201. Its toothed groove 131 meshes with the drive wheel 47, which drives the horizontal shaft 46 to rotate in the opposite direction. The gear 48 on the horizontal shaft 46 drives the shaped rod 44 to slide along the slide groove 225 to the other side. At this time, the shaped rod 44 pulls the support plate 42 and the sliding seat 41 together, compressing the second spring 411. As the support plate 42 continues to move, the sliding rod 49 gradually presses into the inclined groove 421, causing the support plate 42 to rotate around its axis, releasing its contact with the shaped rod 44. The sliding seat 41 resets under the action of the second spring 411, preparing for the next mold closing. Simultaneously, the gear 62 drives the first wedge rod 6, which is meshed with it, to move upwards, releasing the second wedge rod 34 that abuts against it. The wedge rod 34 pulls the connecting pin 32 and the forming plate 31 down as a whole, returning to the original position before punching. At this time, the complete grid sheet after punching corresponds to the first blanking groove 222. The first pusher plate 5 pushes the finished arc-extinguishing grid sheet located above the forming groove 223 into the first blanking groove 222. As the strip feeds continuously, the finished arc-extinguishing grid sheet located on the positioning block 224 is pushed into the discharge die 23. When the die is closed, the pressure plate 15 contacts the upper end of the rotating plate 271 and presses down. The rotating plate 271 rotates around the pin shaft. The lower end of the rotating plate 271 pushes the push block 9 outward to overcome the elastic force of the fifth spring 92, causing the push block 9 to slide. The second pusher plate 91 then extends out from the discharge die 23 and pushes the finished part located in the discharge die 23 into the second blanking groove 231 to achieve discharge. When the mold is closed again, the secondary positioning pin is inserted into the guide groove 201, and the toothed groove 131 on it meshes with the drive wheel 47. The drive wheel 47 drives the horizontal shaft 46 to rotate, and the gear 48 on the horizontal shaft 46 drives the shaped rod 44 to move along the slide groove 225 toward the opening of the sliding mounting groove 221. The first inclined surface of the shaped rod 44 pushes the second inclined surface of the abutment block 45, causing the support plate 42 to rotate counterclockwise around the hinge point. Then the vertical surface of the shaped rod 44 abuts and positions itself against the vertical surface of the abutment block 45, thus achieving reset.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching and trimming integrated device for arc-extinguishing grid sheet, comprising an upper die (1) and a lower die (2), characterized in that: The upper die (1) is sequentially provided with a notched stamping punch (11) and a whole stamping punch (12) along the material strip feeding direction, the lower die (2) is correspondingly provided with a notched stamping recess (21), a whole stamping recess (22) and a material discharging recess (23), the inner wall of the whole stamping recess (22) is provided with an installation groove (221) and a first discharging groove (222) at intervals, the whole stamping recess (22) is provided with a shaping groove (223) and a positioning block (224) at intervals, the floating shaping pad (3) is installed in the shaping groove (223), the inner wall of the material discharging recess (23) is provided with a second discharging groove (231), and the floating shaping pad (3) is installed in the shaping groove (223). The stress block (4) is slidably installed in the installation groove (221) and used for supporting the floating shaping pad (3); The first pushing plate (5) is slidably connected in the shaping groove (223) and corresponds to the first discharging groove (222). The upper die (1) is fixedly provided with a guide column (13), and the lower die (2) is correspondingly provided with a guide groove (201).

2. The press finishing and trimming all-in-one device for arc extinguishing grid blades according to claim 1, characterized in that: The floating shaping pad (3) comprises a shaping plate (31) and a connecting pin (32), the shaping plate (31) and the connecting pin (32) are fixedly connected, the connecting pin (32) is provided with a limiting portion (321), the shaping groove (223) has a cavity for accommodating the limiting portion (321), the connecting pin (32) is provided with a first spring (33) sleeved thereon, and the two ends of the first spring (33) are fixed to the shaping plate (31) and the bottom surface in the shaping groove (223) respectively.

3. The press finishing integrated device for arc extinguishing grid sheet according to claim 1, characterized in that: The stress block (4) comprises a sliding seat (41), the sliding seat (41) is hingedly provided with a supporting plate (42), and one end of the supporting plate (42) penetrates through the opening of the installation groove (221); The supporting plate (42) is fixedly provided with an abutting block one (43), and the abutting block one (43) is in contact with the sliding seat (41).

4. The press finishing integrated device for arc extinguishing grid sheet according to claim 3, characterized in that: A sliding groove (225) is formed in the bottom surface of the installation groove (221), a special-shaped rod (44) is slidably installed in the sliding groove (225), the supporting plate (42) is fixedly provided with an abutting block two (45), a gear slot one (131) is formed in the guide column (13), a horizontal shaft (46) and a driving wheel (47) are correspondingly installed in the sliding groove (225), the gear slot one (131) is in meshing connection with the driving wheel (47), a gear one (48) is installed on the horizontal shaft (46), and the gear one (48) is in meshing connection with the special-shaped rod (44).

5. The press finishing integrated device for arc extinguishing grid sheet according to claim 4, characterized in that: The second spring (411) is connected between the sliding seat (41) and the inner side wall of the installation groove (221), the sliding rod (49) is fixedly installed on the top surface of the installation groove (221), the oblique groove (421) is formed in the supporting plate (42), and the end of the sliding rod (49) penetrates into the oblique groove (421) and abuts against the bottom surface in the oblique groove (421). The special-shaped rod (44) is provided with a first inclined surface on the side close to the opening of the mounting groove (221), and the abutting block two (45) is provided with a second inclined surface corresponding to the special-shaped rod (44).

6. The press finishing integrated device for arc extinguishing grid blades according to claim 1, characterized in that: The integral stamping female die (22) is provided with a special-shaped groove (226) inside, the first wedge-shaped rod (6) and the second wedge-shaped rod (34) are slidably installed in the special-shaped groove (226), the second wedge-shaped rod (34) is fixedly connected with the inner side wall of the special-shaped groove (226) through a third spring (341), the first wedge-shaped rod (6) is provided with a second gear slot (61), and the integral stamping female die (22) is provided with a second gear (62) and is connected with the second gear slot (61) through meshing.

7. The press finishing integrated device for arc extinguishing grid blades according to claim 1, characterized in that: The limit pin (24) is fixedly installed on the inner wall of the integral stamping female die (22) and is located below the first blanking groove (222).

8. The press finishing integrated device for arc extinguishing grid blades according to claim 1, characterized in that: The integral stamping female die (22) is provided with a pull block (7) and a first limiting seat (8) on one side, the guide rod (71) is fixedly connected between the pull block (7) and the push plate (5), the sixth spring (81) is fixedly connected between the pull block (7) and the limiting seat (8), the pull block (7) is provided with symmetrically arranged insertion grooves (72) inside, the insertion grooves (72) are provided with third inclined surfaces, the insertion rod (14) is correspondingly arranged on the upper die (1), and the insertion rod (14) is provided with fourth inclined surfaces corresponding to the insertion grooves (72).

9. The press finishing integrated device for arc extinguishing grid blades according to claim 1, characterized in that: The retreat grooves (227) are arranged on the two side walls of the integral stamping female die (22), the retreat plate (25) is slidably connected in the retreat grooves (227), the fourth spring (26) is connected between the retreat grooves (227) and the retreat plate (25), and the fifth inclined surface is arranged on the lower side of the side face of the retreat plate (25) extending out of the retreat grooves (227).

10. The press finishing integrated device for arc extinguishing grid sheet according to claim 8, characterized in that: The push block (9) is arranged on one side of the discharge female die (23), the second push plate (91) is fixedly installed on the push block (9), the second push plate (91) is correspondingly arranged in the second blanking groove (231), the second limiting seat (27) is fixedly installed on the lower die (2), the fifth spring (92) is fixedly connected between the push block (9) and the second limiting seat (27), the rotary plate (271) is rotatably installed in the second limiting seat (27), the lower side of the rotary plate (271) is in contact with the push block (9), and the lower side of the upper die (1) is connected with the pressing plate (15). The pressing plate (15) is moved downward to drive the rotary plate (271) to rotate, so that the second push plate (91) is moved to the discharge female die (23).

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