Steel belt automatic adjusting multi-angle shearing die

Abstract

The invention relates to a steel belt automatic adjusting multi-angle shearing die which comprises a lower die bottom plate, a lower cutter beam, a lower cutter block, a lower annular supporting table, a cutter beam driving assembly, an upper die bottom plate, an upper cutter beam, an upper cutter block and an upper annular supporting table. An upper sliding block is arranged at the top of the upper cutter beam, a lower sliding block is arranged at the bottom of the lower cutter beam, and cutter beam guide columns are arranged at the two ends of the lower cutter beam. Cutter beam guide sleeves are arranged at the two ends of the upper cutter beam, a lower cutter holder is connected to the lower cutter beam in a front-back sliding mode, the lower cutter block is arranged on the lower cutter holder, and an adjusting bolt is connected to the lower cutter beam in a threaded mode and connected to the lower cutter holder. By means of the lower cutter beam capable of automatically rotating, the adjacent metal plate blanks can be rapidly adjusted to the opposite angle when being sheared, rapid shearing of the adjacent metal plate blanks is achieved, and the production efficiency is high; the upper cutter beam is arranged on the upper die bottom plate, the upper die bottom plate is matched with the lower die bottom plate, the upper cutter beam swings to any angle, the upper cutter beam can be stressed in a balanced mode during punching, and the punching quality and the punching precision of a punching opening are effectively improved.

Description

Technical Field

[0001] The present invention relates to a steel strip shearing die, and particularly to an automatic multi-angle shearing die for steel strips. Background Art

[0002] Sheet metal parts are widely used due to their light weight and high strength. During production, the coiled steel strip needs to be cut into sheet metal blanks. To improve the utilization rate of the steel strip, adjacent sheet metal blanks need to be cut at opposite angles. Since automotive sheet metal parts have high strength, the sheet metal blanks require a high shearing force. To ensure the shearing quality, the existing shearing equipment adopts a fixed shearing method, and the above method cannot achieve continuous shearing of adjacent sheet metal blanks at opposite angles. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic multi-angle shearing die for steel strips.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an automatic multi-angle shearing die for steel strips, including a lower die bottom plate, a lower knife beam rotatably connected to the center of the top of the lower die bottom plate, a lower knife block arranged on the lower knife beam, a lower annular support platform arranged on the top of the lower die bottom plate, a knife beam driving component arranged on the lower knife beam, an upper die bottom plate located above the lower die bottom plate, and an upper knife beam rotatably connected to the center of the bottom of the upper die bottom plate. An upper knife block is arranged at the bottom of the upper knife beam, an upper annular support platform is arranged at the bottom of the upper die bottom plate, an upper slider that is slidably matched with the bottom of the upper annular support platform is arranged at the top of the upper knife beam, a lower slider that is slidably matched with the top of the lower annular support platform is arranged at the bottom of the lower knife beam, the rotation axes of the upper knife beam and the lower knife beam are collinear, the rotation axis of the lower knife beam is vertical, vertical knife beam guide columns are arranged at both ends of the lower knife beam, knife beam guide sleeves that are matched with the knife beam guide columns are arranged at both ends of the upper knife beam, a lower knife seat is slidably connected back and forth on the lower knife beam, the lower knife block is arranged on the lower knife seat, and an adjustment bolt is threadedly connected to the lower knife beam, and the adjustment bolt is connected to the lower knife seat.

[0005] As a further improvement of this design, a feeding support plate is arranged on the feeding side of the lower knife beam, a bull's eye wheel is arranged on the top of the feeding support plate, a discharging support strip is floatingly connected to the discharging side of the lower knife beam, the discharging support strip is arranged parallel to the shearing edge of the lower knife block, and bull's eye wheels are distributed on the top of the discharging support strip.

[0006] As a further improvement of this design, a support floating spring and a floating limit bolt are connected between the discharging support strip and the lower knife beam, and the floating limit bolt passes through the discharging support strip and is then connected to the lower knife beam.

[0007] As a further improvement of this design, a discharge support limit post is provided on the lower knife beam, a discharge support guide hole is provided at the bottom of the discharge support bar, a notch is provided on the front side of the top of the discharge support limit post, and a biting protrusion that bites with the notch is provided at the bottom of the discharge support guide hole. The rear side of the biting protrusion is opposite to the front side of the notch.

[0008] As a further improvement of this design, a swing limit block is provided on the top of the lower die bottom plate, a swing stop block is provided at the bottom of the lower knife beam, the swing limit block is located at the end of the moving path of the swing stop block, and a limit buffer block is provided on the side of the swing limit block facing the swing stop block.

[0009] As a further improvement of this design, a pressure strip is provided at the bottom of the upper knife beam. The pressure strip is slidably connected to the upper knife beam up and down. A pressure spring is connected between the pressure strip and the upper knife beam. The pressure strip is parallel to the upper knife block and is located in front of the upper knife block.

[0010] As a further improvement of this design, knife beam guide grooves are provided at the tops of both ends of the lower knife beam. Knife beam guide blocks are provided on the front and rear sides of the knife beam guide grooves. Knife beam sliders that cooperate with the knife beam guide blocks are provided at both ends of the upper knife beam. A lower die support post is provided at each of the four corners of the lower die bottom plate. An upper die extension post corresponding to the lower die support post one by one is provided at the bottom of the upper die bottom plate. A lower die support notch is provided at the top of the lower die support post. The side surface of the upper die extension post is attached to the adjacent side surface of the lower die support notch during shearing.

[0011] As a further improvement of this design, the upper knife beam is rotatably connected to the upper die bottom plate through an upper bearing, the lower knife beam is rotatably connected to the lower die bottom plate through a lower bearing, and an angle sensor for detecting the rotation angle of the lower bearing is provided on the lower bearing.

[0012] As a further improvement of this design, the knife beam drive assembly includes a drive motor provided at the bottom of the lower knife beam, a drive gear provided on the drive motor, a ring gear provided on the side surface of the lower annular support table. The drive gear meshes with the ring gear. The center of the ring gear is collinear with the rotation axis of the lower knife beam. An angle scale bar extending along the ring gear is provided on the side surface of the lower annular support table.

[0013] As a further improvement of this design, a drive motor is provided at each of the two ends of the lower knife beam.

[0014] The beneficial effects of the present invention are as follows: Through the automatically rotating lower knife beam, the present invention can quickly adjust to the opposite angle when shearing adjacent sheet metal blanks, achieving the rapid shearing of adjacent sheet metal blanks, with high production efficiency and being suitable for an automated cutting line. The upper knife beam is arranged on the upper die bottom plate, and by using the cooperation between the upper die bottom plate and the lower die bottom plate, the upper knife beam can be swung to any angle to ensure balanced force during punching, effectively improving the punching quality and punching accuracy of the punched opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 It is a schematic perspective view of the overall structure of the present invention.

[0017] Figure 2 It is a schematic top view of the overall structure of the present invention.

[0018] Figure 3 It is the present invention in Figure 2 Schematic cross-sectional view at the A-A position.

[0019] Figure 4 It is the Figure 3 Schematic partial cross-sectional view at I in the present invention.

[0020] Figure 5 It is a schematic perspective view of the components of the lower die of the present invention.

[0021] Figure 6 It is a schematic perspective view of the components of the upper die of the present invention.

[0022] In the figure: 1. Lower die bottom plate; 2. Lower knife beam; 3. Upper knife beam; 4. Feeding support plate; 5. Bull's eye wheel; 6. Upper die bottom plate; 7. Knife beam drive assembly; 70. Ring gear; 71. Drive motor; 72. Drive gear; 8. Angle scale bar; 9. Pressure spring; 10. Swing limit block; 11. Limit buffer block; 12. Lower annular support platform; 13. Discharge support bar; 14. Knife beam guide post; 15. Knife beam guide groove; 16. Lower knife seat; 17. Lower knife block; 18. Adjusting bolt; 19. Lower die support notch; 20. Upper die extension column; 21. Upper knife block; 22. Pressure bar; 23. Knife beam guide block; 24. Upper annular support platform; 25. Upper slider; 26. Lower slider; 27. Knife beam guide sleeve; 28. Knife beam slider; 29. Lower die support column; 30. Upper bearing; 31. Lower bearing; 32. Angle sensor; 33. Discharge support guide hole; 34. Biting protrusion; 35. Floating limit bolt; 36. Notch; 37. Discharge support limit column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention, but not to limit the present invention.

[0024] Embodiment: An automatic multi-angle shearing die for steel strips, comprising a lower die bottom plate 1, a lower knife beam 2 rotatably connected to the center of the top of the lower die bottom plate 1, a lower knife block 17 arranged on the lower knife beam 2, a lower annular support table 12 arranged on the top of the lower die bottom plate 1, a knife beam driving assembly 7 arranged on the lower knife beam 2, an upper die bottom plate 6 located above the lower die bottom plate 1, and an upper knife beam 3 rotatably connected to the center of the bottom of the upper die bottom plate 6. An upper knife block 21 is arranged at the bottom of the upper knife beam 3. An upper annular support table 24 is arranged at the bottom of the upper die bottom plate 6. An upper slider 25 which is slidably matched with the bottom of the upper annular support table 24 is arranged at the top of the upper knife beam 3. A lower slider 26 which is slidably matched with the top of the lower annular support table 12 is arranged at the bottom of the lower knife beam 2. The rotation axes of the upper knife beam 3 and the lower knife beam 2 are collinear. The rotation axis of the lower knife beam 2 is vertical. Vertical knife beam guide columns 14 are arranged at both ends of the lower knife beam 2. Knife beam guide sleeves 27 which are matched with the knife beam guide columns 14 are arranged at both ends of the upper knife beam 3. A lower knife holder 16 is slidably connected to the front and back of the lower knife beam 2. The lower knife block 17 is arranged on the lower knife holder 16. An adjusting bolt 18 is threadedly connected to the lower knife beam 2. The adjusting bolt 18 is connected to the lower knife holder 16. The upper knife block 21 is located above the rear side of the lower knife block 17.

[0025] Through the automatically rotating lower knife beam 2, the opposite angles can be quickly adjusted when shearing adjacent sheet metal blanks, realizing the rapid shearing of adjacent sheet metal blanks, and having high production efficiency. The upper knife beam 3 is arranged on the upper die bottom plate 6, and then by using the cooperation of the upper die bottom plate 6 and the lower die bottom plate 1, the upper knife beam 3 can be swung to any angle to make the force on the upper knife beam 3 balanced during punching, effectively improving the punching quality and punching accuracy of the punching opening. The adjusting bolt 18 is used to adjust the lower knife holder 16, and further adjust the gap between the upper knife block 21 and the lower knife block 17, which is suitable for shearing steel strips with different plate thicknesses, having high shearing accuracy and wide applicability.

[0026] In order to facilitate the support of the steel strip when the lower knife beam 2 swings to different angles and ensure the shearing accuracy of the steel strip, a feeding support plate 4 is provided on the feeding side of the lower knife beam 2. A bull's eye wheel 5 is provided on the top of the feeding support plate 4. A discharging support bar 13 is floatingly connected to the discharging side of the lower knife beam 2. The discharging support bar 13 is arranged parallel to the shearing edge of the lower knife block 17. Bull's eye wheels 5 are distributed on the top of the discharging support bar 13. The bull's eye wheels 5 reduce the friction between the steel strip and the discharging support bar and the feeding support bar, facilitate feeding and discharging, and prevent the steel strip from arching caused by friction, thereby improving the cutting accuracy. The floatingly connected discharging support bar 13 can play a role in supporting the material during shearing, reducing the bending of the sheared edge of the sheet metal blank. The specific structure of the bull's eye wheel 5 includes a fixed base and a ball placed on the top of the fixed base, and the ball can rotate freely.

[0027] In order to simplify the connection structure between the discharging support bar 13 and the lower knife beam 2, a support floating spring (not shown in the figure) and a floating limit bolt 35 are connected between the discharging support bar 13 and the lower knife beam 2. The floating limit bolt 35 passes through the discharging support bar 13 and is connected to the lower knife beam 2.

[0028] In order to prevent the discharging support bar 13 from moving back and forth and affecting the shearing quality, a discharging support limit post 37 is provided on the lower knife beam 2. A discharging support guiding hole 33 is provided at the bottom of the discharging support bar 13. A notch 36 is provided on the front side of the top of the discharging support limit post 37. A biting protrusion 34 that engages with the notch 36 is provided at the bottom of the discharging support guiding hole 33. The rear side of the biting protrusion 34 is opposite to the front side of the notch 36. The biting structure is simple and small in size, and is suitable for the relatively narrow discharging support bar 13. The discharging support bar 13 is convenient for supporting the end of the sheared sheet metal blank and preventing the sheet metal blank from slipping.

[0029] In order to prevent the lower knife beam 2 from swinging beyond the stroke and causing equipment damage, a swing limit block 10 is provided on the top of the lower die bottom plate 1. A swing stop block (not shown in the figure) is provided at the bottom of the lower knife beam 2. The swing limit block 10 is located at the end of the moving path of the swing stop block. A limit buffer block 11 is provided on the side of the swing limit block 10 facing the swing stop block.

[0030] In order to ensure that the steel strip fits with the lower knife block 17 during shearing and improve the shearing quality, a pressure strip 22 is provided at the bottom of the upper knife beam 3. The pressure strip 22 is slidably connected to the upper knife beam 3 up and down. A pressure spring 9 is connected between the pressure strip 22 and the upper knife beam 3. The pressure strip 22 is parallel to the upper knife block 21 and is located in front of the upper knife block 21.

[0031] To improve the die closing accuracy and stability of the lower knife beam 2 and the upper knife beam 3, knife beam guiding grooves 15 are provided at the tops of both ends of the lower knife beam 2. Knife beam guiding blocks 23 are provided on the front and rear sides of the knife beam guiding grooves 15. Knife beam sliders 28 that cooperate with the knife beam guiding blocks 23 are provided at both ends of the upper knife beam 3. A lower die support column 29 is provided at each of the four corners of the lower die bottom plate 1. Upper die extension columns 20 corresponding one by one to the lower die support columns 29 are provided at the bottom of the upper die bottom plate 6. A lower die support notch 19 is provided at the top of the lower die support column 29. The side surface of the upper die extension column 20 is in contact with the adjacent side surface of the lower die support notch 19 during shearing. The knife beam sliders 28 and the knife beam guiding blocks 23 limit the front and rear positions of the upper knife beam 3 and the lower knife beam 2, prevent tool deflection, and improve the shearing accuracy.

[0032] To facilitate automatic adjustment of the shearing angle, the upper knife beam 3 is rotatably connected to the upper die bottom plate 6 through an upper bearing 30. The lower knife beam 2 is rotatably connected to the lower die bottom plate 1 through a lower bearing 31. An angle sensor 32 for detecting the rotation angle of the lower bearing 31 is provided on the lower bearing 31.

[0033] To improve the adjustment accuracy and stability, the knife beam driving assembly 7 includes a driving motor 71 provided at the bottom of the lower knife beam 2, a driving gear 72 provided on the driving motor 71, and an annular rack 70 provided on the side surface of the lower annular support table 12. The driving gear 72 meshes with the annular rack 70. The center of the annular rack 70 is collinear with the rotation axis of the lower knife beam 2. An angle scale bar 8 extending along the annular rack 70 is provided on the side surface of the lower annular support table 12, facilitating the staff to calibrate the angle.

[0034] To increase the speed of angle adjustment, a driving motor 71 is provided at each end of the lower knife beam 2.

[0035] During operation, the upper knife block 21 and the lower knife block 17 are vertically staggered. The knife beam guide posts 14 and the knife beam guide sleeves 27 are always in sliding fit during the shearing process. The upper knife beam 3 rotates following the lower knife beam 2. The steel strip passes through above the feeding support plate 4 and its bottom abuts against the bull's eye wheel above the feeding support plate 4. Subsequently, the steel strip passes between the upper knife block 21 and the lower knife block 17. The driving gear 72 rotates, the driving gear 72 meshes with the annular rack 70, and the lower knife beam 2 rotates in the horizontal plane and drives the upper knife beam 3 to rotate synchronously to the set angle. The upper knife beam 3 descends, the pressure strip 22 moves downward and compresses the steel strip, and the upper knife block 21 continues to move downward to combine with the lower knife block 17 to form a shearing edge and cut the steel strip. The cut steel strip is conveyed out by the subsequent material receiving equipment.

[0036] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A steel strip automatic adjustment multi-angle shearing die, characterized in that: The present invention comprises a lower die bottom plate, a lower knife beam rotatably connected to the top center of the lower die bottom plate, a lower knife block arranged on the lower knife beam, a lower annular support platform arranged on the top of the lower die bottom plate, a knife beam driving component arranged on the lower knife beam, an upper die bottom plate located above the lower die bottom plate, an upper knife beam rotatably connected to the bottom center of the upper die bottom plate, an upper knife block is arranged at the bottom of the upper knife beam, an upper annular support platform is arranged at the bottom of the upper die bottom plate, and a An upper sliding block, a lower sliding block is provided at the bottom of the lower knife beam and is slidably matched with the top of the lower annular support platform, the upper knife beam and the rotation axis of the lower knife beam are colinear, the rotation axis of the lower knife beam is vertical, vertical knife beam guide columns are provided at both ends of the lower knife beam, knife beam guide sleeves matched with the knife beam guide columns are provided at both ends of the upper knife beam, a lower knife seat is slidably connected to the lower knife beam front and back, the lower knife block is arranged on the lower knife seat, an adjustment bolt is threadedly connected to the lower knife beam, and the adjustment bolt is connected to the lower knife seat.

2. The steel strip automatic adjustment multi-angle shearing die according to claim 1 is characterized in that: A feed support plate is provided on the feeding side of the lower knife beam, a bull's eye wheel is provided on the top of the feed support plate, a discharge support strip is floatingly connected to the discharge side of the lower knife beam, the discharge support strip is arranged parallel to the shearing edge of the lower knife block, and a bull's eye wheel is distributed on the top of the discharge support strip.

3. The steel strip automatic adjustment multi-angle shearing die according to claim 2 is characterized in that: A supporting floating spring and a floating limiting bolt are connected between the discharging support bar and the lower knife beam. The floating limiting bolt penetrates through the discharging support bar and is connected to the lower knife beam.

4. The steel strip automatic adjustment multi-angle shearing die according to claim 3 is characterized in that: A discharging support and limiting column is provided on the lower knife beam, a discharging support guide hole is provided at the bottom of the discharging support strip, a notch is provided on the front side of the top of the discharging support and limiting column, a biting protrusion biting with the notch is provided at the bottom of the discharging support guide hole, and the rear side of the biting protrusion is opposite to the front side of the notch.

5. The steel strip automatic adjustment multi-angle shearing die according to claim 1 is characterized in that: A swing limit block is provided on the top of the lower mold bottom plate, a swing stop block is provided on the bottom of the lower knife beam, the swing limit block is located at the end of the moving path of the swing stop block, and a limit buffer block is provided on one side of the swing limit block facing the swing stop block.

6. The steel strip automatic adjustment multi-angle shearing die according to claim 1 is characterized in that: A pressing strip is provided at the bottom of the upper knife beam, and the pressing strip is slidably connected to the upper knife beam up and down. A pressing spring is connected between the pressing strip and the upper knife beam. The pressing strip is parallel to the upper knife block and is located at the front side of the upper knife block.

7. The steel strip automatic adjustment multi-angle shearing die according to claim 1 is characterized in that: The top of both ends of the lower knife beam is provided with a knife beam guide groove, the front and rear sides of the knife beam guide groove are provided with a knife beam guide block, the two ends of the upper knife beam are provided with a knife beam sliding block cooperating with the knife beam guide block, the four corners of the lower mold base plate are respectively provided with a lower mold support column, the bottom of the upper mold base plate is provided with an upper mold extension column corresponding to the lower mold support column one by one, the top of the lower mold support column is provided with a lower mold support notch, and the side surface of the upper mold extension column is in contact with the adjacent side surface of the lower mold support notch during shearing.

8. The steel strip automatic adjustment multi-angle shearing die according to claim 1 is characterized in that: The upper knife beam is rotatably connected to the upper die bottom plate via an upper bearing, and the lower knife beam is rotatably connected to the lower die bottom plate via a lower bearing. An angle sensor for detecting the rotation angle of the lower bearing is provided on the lower bearing.

9. The steel strip automatic adjustment multi-angle shearing die according to claim 1, characterized in that: The knife beam driving assembly includes a driving motor arranged at the bottom of the lower knife beam, a driving gear arranged on the driving motor, and an annular rack arranged on the side of the lower annular support platform, the driving gear is meshed with the annular rack, the center of the annular rack is colinear with the rotation axis of the lower knife beam, and the side of the lower annular support platform is provided with an angle scale bar extending along the annular rack.

10. The steel strip automatic adjustment multi-angle shearing die according to claim 9, characterized in that: A driving motor is respectively arranged at both ends of the lower blade beam.

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