Sheet metal bending die with rapid positioning groove

CN224763985UActive Publication Date: 2026-09-18SUZHOU IND PARK KAIRUOLA METAL MATERIALS CO LTD
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Patent Information

Application Number
CN202521811921.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-25
Publication Date
2026-09-18
Estimated Expiration
2035-08-25

AI Technical Summary

Technical Problem

[0005]针对现有技术的不足,本实用提供了一种带有快速定位槽的钣金折弯模具,解决了钣金折弯模具在冲压工作时容易因安装槽的厚度导致出现不需要的弯折的问题

Benefits of technology

[0018] 1. This utility model uses a starting motor to drive a circular gear to rotate, which synchronously drives the racks on both sides to move back and forth, so that the L-shaped plate moves along the connecting cover to adapt to sheet metal parts of different widths. At the same time, the spring telescopic plate moves and rotates by means of its elasticity and telescopic characteristics, which in turn pushes the rotating plate to move up and down to adapt to sheet metal parts of different thicknesses. Meanwhile, the positioning and bending steps are separated to prevent them from affecting each other, thereby improving the reliability of the device.

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Abstract

This utility model relates to the field of sheet metal bending mold technology, and discloses a sheet metal bending mold with a quick positioning groove. It includes a motor, which is fixedly connected to the top inner side of a base. A connecting cover is connected to the top of the base. The output end of the motor passes through the base and is fixedly connected to a circular gear. Racks are slidably connected to the left and right sides inside the connecting cover. An L-shaped plate is fixedly connected to the outer side of the racks. A spring rod is fixedly connected to the top inner side of the L-shaped plate. Spring telescopic plates are rotatably connected to the left and right ends of the spring rod. A rotating plate is rotatably connected to the bottom of the spring telescopic plate. By starting the motor, the circular gear rotates, driving the racks on both sides to move, causing the L-shaped plate to move along the connecting cover to adapt to sheet metal parts of different widths. The spring telescopic plates move and rotate using their elasticity and telescopic characteristics, pushing the rotating plate up and down to adapt to different thicknesses. Simultaneously, the positioning and bending steps are separated to avoid mutual interference.
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Description

Technical Field

[0001] This utility model relates to the field of sheet metal bending mold technology, specifically a sheet metal bending mold with a quick positioning groove. Background Technology

[0002] Sheet metal parts are components made from metal sheets through cold working processes such as shearing, stamping, bending, welding, and surface treatment. They are characterized by light weight, high strength, low cost, and easy mass production, and are widely used in the automotive, home appliance, machinery, electronics, and aerospace fields. They are basic components in industrial manufacturing. In order to facilitate the bending of sheet metal parts, a sheet metal bending die with a quick positioning groove is needed.

[0003] Sheet metal bending dies with quick positioning slots are tooling fixtures that add a positioning slot structure to the traditional bending die. The positioning slot can quickly engage with the reference edge or hole of the sheet metal part to achieve precise positioning and reduce adjustment time. It improves bending accuracy and efficiency and is suitable for sheet metal parts processing with high requirements for dimensional consistency in mass production. It is commonly found in automotive and electronics manufacturing scenarios.

[0004] Currently available sheet metal bending dies consist of an upper die and a lower die. During use, the sheet metal part is placed in the lower die, and a telescopic rod is activated to push the upper die for stamping or bending, thus achieving the bending and forming of the sheet metal part. To improve bending efficiency and quality, existing technologies employ precise guide structures to enhance bending accuracy. To ensure the stability of the sheet metal part during bending, existing technologies use a method of fixing the part in a mounting groove. However, because the mounting groove itself has thickness, this method can easily lead to unwanted bending during stamping due to the thickness. Furthermore, the clamping force is insufficient when processing irregularly shaped or thin sheet metal parts, affecting bending accuracy and processing results, thereby reducing the reliability of the device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sheet metal bending die with a quick positioning groove, which solves the problem that unnecessary bending can easily occur during stamping operations due to the thickness of the mounting groove.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a sheet metal bending die with a quick positioning groove, including a base, a positioning mechanism provided on the top of the base, the positioning mechanism being able to easily position the sheet metal part during operation, a replacement mechanism provided on the outside of the base, the replacement mechanism being able to easily replace the die according to requirements, and an angle adjustment mechanism provided inside the base, the angle adjustment mechanism being used to adjust the angle of the sheet metal part during processing;

[0007] The positioning mechanism includes a motor, which is fixedly connected to the top inner side of the base. A connecting cover is connected to the top of the base. The output end of the motor passes through the base and is fixedly connected to a circular gear. A rack is slidably connected to the left and right sides inside the connecting cover. An L-shaped plate is fixedly connected to the outer side of the rack. A spring rod is fixedly connected to the top inner side of the L-shaped plate. Spring telescopic plates are rotatably connected to the left and right ends of the spring rod. A rotating wheel plate is rotatably connected to the bottom of the spring telescopic plate. A support assembly is provided on the bottom outer side of the base.

[0008] Preferably, the replacement mechanism includes a hollow plate and a toothed belt. The hollow plate is located on the top left side of the base. An electric telescopic rod is fixedly connected to the front and rear sides of the top of the hollow plate. A telescopic cover is rotatably connected to the outer side of the electric telescopic rod. A hollow plate is rotatably connected to the top of the telescopic cover. A locking gear is rotatably connected to the front and rear sides of the interior of the hollow plate and the hollow plate. The locking gears are connected to each other by a toothed belt. The upper and lower sides of the exterior of the telescopic cover pass through the hollow plate and the hollow plate and are fixedly connected to the corresponding locking gears. Threaded columns are rotatably connected to the front and rear sides of the interior of the hollow plate and the hollow plate. The outer side of the threaded column is fixedly connected to the corresponding locking gear. A mold plate is threadedly connected to the outer side of the threaded column.

[0009] Preferably, the angle adjustment mechanism includes a rotating base, which is fixedly connected to the bottom of the hollow plate. Connecting rods are fixedly connected to the front and rear sides of the left middle of the base. The connecting rods are rotatably connected to the rotating base. A threaded rod is rotatably connected to the bottom inner side of the base. A Y-shaped plate is threadedly connected to the outer side of the threaded rod. Multiple U-shaped blocks are rotatably connected to the left side of the Y-shaped plate through the base. The top of the U-shaped blocks is fixedly connected to the rotating base. A limit component is provided on the outside of the rotating base. A protective component is provided on the middle left side of the base.

[0010] Preferably, the support assembly includes mounting plates, and a plurality of mounting plates are respectively fixedly connected to the outer bottom of the base, and a bracket is fixedly connected to the outer side of the mounting plate.

[0011] Preferably, the positioning mechanism further includes guide rods, two of which are fixedly connected to the left and right sides inside the connecting cover, and the outer sides of the guide rods are slidably connected to the L-shaped plate.

[0012] Preferably, the positioning mechanism further includes a sliding groove, and multiple sliding grooves are respectively formed on the left and right sides inside the corresponding L-shaped plate, and the outer side of the rotating plate is slidably connected to the sliding groove.

[0013] Preferably, the replacement mechanism further includes nuts, two nuts are rotatably connected to the front and rear sides of the top of the hollow plate two respectively, and the bottom of the nuts penetrates through the hollow plate two and is fixedly connected to the corresponding locking gear.

[0014] Preferably, the limiting component includes a rotating block, two rotating blocks are rotatably connected to the outside of the corresponding connecting rod, the outside of the rotating block passes through the connecting rod and is fixedly connected to the rotating seat, and the bottom of the connecting rod is slidably connected to a limiting block.

[0015] Preferably, the protective component includes a mounting groove, which is located in the middle left side of the base, and a protective pad is fixedly connected to the inner side of the mounting groove.

[0016] Preferably, the angle adjustment mechanism further includes a knob, which is rotatably connected to the bottom right side of the base, and the outer side of the knob passes through the base and is fixedly connected to the threaded rod.

[0017] This utility model provides a sheet metal bending die with a quick positioning groove. It has the following beneficial effects:

[0018] 1. This utility model uses a starting motor to drive a circular gear to rotate, which synchronously drives the racks on both sides to move back and forth, so that the L-shaped plate moves along the connecting cover to adapt to sheet metal parts of different widths. At the same time, the spring telescopic plate moves and rotates by means of its elasticity and telescopic characteristics, which in turn pushes the rotating plate to move up and down to adapt to sheet metal parts of different thicknesses. Meanwhile, the positioning and bending steps are separated to prevent them from affecting each other, thereby improving the reliability of the device.

[0019] 2. This utility model uses an electric telescopic rod to push a hollow plate 2 up and down along a hollow plate 1. The rotating gear drives multiple gears to rotate synchronously through a toothed belt, which in turn drives the telescopic cover and threaded column to rotate. The rotation of the telescopic cover does not affect the extension and retraction of the telescopic rod and works in conjunction with the toothed belt. The rotation of the threaded column connects and disassembles the mold plate through a threaded connection, thereby improving the convenience of the device.

[0020] 3. This utility model uses the rotation of the threaded rod to drive the Y-shaped plate to move left and right along the inner side of the base, causing the U-shaped block on it to move accordingly. This pushes the rotating seat to rotate along the connecting rod, adjusting the position and angle of the hollow plate. This allows the device to adjust the stamping and bending angles as needed, thereby improving the practicality of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional diagram for practical use;

[0022] Figure 2 This is the front view of this utility model;

[0023] Figure 3 This is a side view of the utility model;

[0024] Figure 4 This is a schematic diagram of a partial structure of this utility model;

[0025] Figure 5 This is a partial structural illustration of the utility model;

[0026] Figure 6 This is a partial structural breakdown diagram of the positioning mechanism in this utility model;

[0027] Figure 7 This is a partial structural breakdown diagram of the replacement mechanism in this utility model;

[0028] Figure 8 This is a partial structural breakdown diagram of the angle adjustment mechanism in this practical application.

[0029] The components include: 1. Base; 2. Positioning mechanism; 21. Motor; 22. Circular gear; 23. Rack; 24. Connecting cover; 25. L-shaped plate; 26. Spring rod; 27. Spring telescopic plate; 28. Rotary wheel plate; 29. ​​Support assembly; 291. Mounting plate; 292. Bracket; 210. Guide rod; 211. Slide groove; 3. Replacement mechanism; 31. Hollow plate one; 32. Telescopic cover; 33. Hollow plate two; 34. Electric telescopic rod; 35. Snap gear; 36. Gear belt; 37. Threaded column; 38. Mold plate; 39. Nut; 4. Angle adjustment mechanism; 41. Rotating seat; 42. Connecting rod; 43. Threaded rod; 44. Y-shaped plate; 45. U-shaped block; 46. Limiting assembly; 461. Rotating block; 462. Limiting block; 47. Protective assembly; 471. Mounting groove; 472. Protective pad; 48. Knob. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 3 , Figure 4 and Figure 6 This utility model provides a sheet metal bending die with a quick positioning groove, including a base 1, a positioning mechanism 2 is provided on the top of the base 1, the positioning mechanism 2 can facilitate the positioning of the sheet metal parts during operation, a replacement mechanism 3 is provided on the outside of the base 1, the replacement mechanism 3 can facilitate the replacement of the die according to the requirements, and an angle adjustment mechanism 4 is provided inside the base 1, the angle adjustment mechanism 4 is used to adjust the angle of the sheet metal parts during processing.

[0032] The positioning mechanism 2 includes a motor 21, which is fixedly connected to the top inner side of the base 1. The top of the base 1 is connected to a connecting cover 24. The output end of the motor 21 passes through the base 1 and is fixedly connected to a circular gear 22. Starting the motor 21 can drive the circular gear 22 to rotate. The left and right sides of the inside of the connecting cover 24 are slidably connected to a rack 23. The outside of the rack 23 is fixedly connected to an L-shaped plate 25. The rotation of the circular gear 22 will drive the rack 23 and the L-shaped plate 25 to move. The top inner side of the L-shaped plate 25 is fixedly connected to a spring rod 26. The left and right ends of the spring rod 26 are rotatably connected to a spring telescopic plate 27. The movement of the spring rod 26 will push the spring telescopic plate 27 to move. The bottom of the spring telescopic plate 27 is rotatably connected to a rotating plate 28. The rotation and extension of the spring telescopic plate 27 can push the rotating plate 28 to move up and down. A support component 29 is provided on the bottom outer side of the base 1.

[0033] Specifically, after the motor 21 is started, the circular gear 22 rotates accordingly, which in turn drives the racks 23 on both sides to move back and forth. The movement of the racks 23 will drive the L-shaped plate 25 to move along the connecting cover 24 to adapt to sheet metal parts of different widths. At the same time, with the help of the elastic potential energy and telescopic characteristics of the spring telescopic plate 27, it can be driven to move and rotate itself. The rotation of the spring telescopic plate 27, combined with its own elastic telescopic, can also drive the rotating plate 28 to move up and down, thereby adapting to sheet metal parts of different thicknesses.

[0034] Reference Figure 2 , Figure 5 and Figure 7 The replacement mechanism 3 includes a hollow plate 31 and a toothed belt 36. The hollow plate 31 is located on the top left side of the base 1. An electric telescopic rod 34 is fixedly connected to the front and rear sides of the top of the hollow plate 31. A telescopic cover 32 is rotatably connected to the outer side of the electric telescopic rod 34. A hollow plate 33 is rotatably connected to the top of the telescopic cover 32. Activating the electric telescopic rod 34 can push the telescopic cover 32 to extend or retract, further pushing the hollow plate 33 to move. Gears 35 are rotatably connected to the front and rear sides of the hollow plate 33 and the hollow plate 31, respectively. The gears 35 are connected to each other via the toothed belt 36. The outer upper and lower sides of the telescopic cover 32 pass through the hollow plate 2 33 and the hollow plate 1 31 respectively and are fixedly connected to the corresponding locking gear 35. Through the cooperation of the toothed belt 36 and the telescopic cover 32, all the locking gears 35 can be rotated synchronously. The inner front and rear sides of the hollow plate 1 31 and the hollow plate 2 33 are rotatably connected to the threaded column 37. The outer side of the threaded column 37 is fixedly connected to the corresponding locking gear 35. The outer side of the threaded column 37 is threadedly connected to the mold plate 38. The rotation of the locking gear 35 will drive the threaded column 37 to rotate, and the mold plate 38 can be replaced through the threaded connection of the threaded column 37.

[0035] Specifically, activating the electric telescopic rod 34 allows it to push the hollow plate 33 up and down along the hollow plate 31. Then, rotating the locking gear 35, through the toothed belt 36, can simultaneously drive multiple locking gears 35 to rotate. When the locking gear 35 rotates, it will drive the telescopic cover 32 and the threaded column 37 to rotate. The rotation of the telescopic cover 32 and the electric telescopic rod 34 will not affect the extension and retraction of the electric telescopic rod 34, and the rotation of the telescopic cover 32 can coordinate with the toothed belt 36 to synchronously drive all locking gears 35 to rotate. The rotation of the threaded column 37 can realize the disassembly and assembly of the mold plate 38 through the threaded connection.

[0036] Reference Figure 4 , Figure 7 and Figure 8 The angle adjustment mechanism 4 includes a rotating seat 41, which is fixedly connected to the bottom of the hollow plate 31. A connecting rod 42 is fixedly connected to the front and rear sides of the middle left side of the base 1. The rotating seat 41 can rotate along the connecting rod 42. The connecting rod 42 is rotatably connected to the rotating seat 41. A threaded rod 43 is rotatably connected to the bottom inner side of the base 1. A Y-shaped plate 44 is threadedly connected to the outer side of the threaded rod 43. A plurality of U-shaped blocks 45 are rotatably connected to the left side of the Y-shaped plate 44 through the base 1. The rotation of the threaded rod 43 will push the Y-shaped plate 44 to move. The top of the U-shaped block 45 is fixedly connected to the rotating seat 41. When the Y-shaped plate 44 moves, it will push the U-shaped block 45 to move and push the rotating seat 41 to rotate accordingly. A limit component 46 is provided on the outside of the rotating seat 41. A protective component 47 is provided on the middle left side of the base 1.

[0037] Specifically, rotating the threaded rod 43 can drive the Y-shaped plate 44 to move left and right along the inner side of the base 1. The movement of the Y-shaped plate 44 will drive the U-shaped block 45 on it to move together. When the U-shaped block 45 moves, it will push the rotating seat 41 to rotate along the connecting rod 42, thereby adjusting the position and angle of the hollow plate 31 on it, so that the device can adjust the stamping and bending angles as needed.

[0038] Reference Figure 1 , Figure 3 and Figure 6 The support assembly 29 includes a mounting plate 291, with multiple mounting plates 291 fixedly connected to the outer bottom of the base 1, and a bracket 292 fixedly connected to the outer side of the mounting plate 291; the positioning mechanism 2 also includes a guide rod 210, with two guide rods 210 fixedly connected to the inner left and right sides of the connecting cover 24, and the outer side of the guide rod 210 slidably connected to the L-shaped plate 25; the positioning mechanism 2 also includes a slide groove 211, with multiple slide grooves 211 respectively opened on the inner left and right sides of the corresponding L-shaped plate 25, and the outer side of the rotating plate 28 slidably connected to the slide groove 211;

[0039] Specifically, the bracket 292 on the mounting plate 291 facilitates the support and fixation of the device. By sliding with the guide rod 210, the stability of the L-shaped plate 25 during movement can be improved. By sliding along the slide groove 211, the stability of the rotating plate 28 during up and down movement can be improved.

[0040] Reference Figure 1 , Figure 3 and Figure 5 The replacement mechanism 3 also includes nuts 39. Two nuts 39 are rotatably connected to the front and rear sides of the top of the hollow plate 2 33 respectively. The bottom of the nuts 39 passes through the hollow plate 2 33 and is fixedly connected to the corresponding locking gear 35. Rotating the nuts 39 can synchronously drive the locking gear 35 to rotate. The angle adjustment mechanism 4 also includes a knob 48. The knob 48 is rotatably connected to the bottom right side of the base 1. The outer side of the knob 48 passes through the base 1 and is fixedly connected to the threaded rod 43. Rotating the knob 48 can synchronously drive the threaded rod 43 to rotate.

[0041] Specifically, rotating the nut 39 can synchronously drive the corresponding locking gear 35 to rotate, thus facilitating the operation of the device. Rotating the knob 48 can synchronously drive the threaded rod 43 to rotate, thus facilitating its operation.

[0042] Reference Figure 2 , Figure 4 and Figure 8 The limiting component 46 includes a rotating block 461. Two rotating blocks 461 are rotatably connected to the outside of the corresponding connecting rod 42. The outside of the rotating block 461 passes through the connecting rod 42 and is fixedly connected to the rotating seat 41. The bottom of the connecting rod 42 is slidably connected to the limiting block 462. When the rotating seat 41 rotates, its rotation amplitude is limited by the limiting block 462. At this time, moving the limiting block 462 can adjust the rotation amplitude of the rotating seat 41. The protective component 47 includes a mounting groove 471. The mounting groove 471 is opened in the middle of the left side of the base 1. A protective pad 472 is fixedly connected to the inner side of the mounting groove 471. The protective pad 472 on the mounting groove 471 can reduce the collision of the rotating seat 41 with the base 1.

[0043] Specifically, when the rotating seat 41 rotates, it will synchronously drive the rotating block 461 to rotate along the connecting rod 42. At this time, the rotating block 461 will be limited by the limiting block 462 when rotating, thereby limiting the rotation angle and amplitude of the rotating seat 41. The movable limiting block 462 can further limit the rotation angle of the rotating seat 41. Through the protective pad 472 in the mounting groove 471, it can prevent the base 1 from being bumped when the rotating seat 41 is reset.

[0044] Working principle: The starting motor 21 drives the circular gear 22 to rotate. As the circular gear 22 rotates, it drives the racks 23 on both sides to move back and forth. As the racks 23 move, they drive the L-shaped plate 25 to move along the connecting cover 24, thus adapting to sheet metal parts of different widths. At the same time, the elastic potential energy and extension of the spring telescopic plate 27 can push the spring telescopic plate 27 to move and rotate. As the spring telescopic plate 27 rotates and its own elastic extension and contraction, it can push the rotating plate 28 to move up and down, thus adapting to sheet metal parts of different thicknesses.

[0045] Furthermore, by activating the electric telescopic rod 34, the hollow plate 2 33 can be moved up and down along the hollow plate 1 31. Then, rotating the locking gear 35 can synchronously drive multiple locking gears 35 to rotate through the toothed belt 36. At this time, the rotation of the locking gear 35 will drive the telescopic cover 32 and the threaded column 37 to rotate. The rotation of the telescopic cover 32 and the electric telescopic rod 34 will not affect the extension and retraction of the electric telescopic rod 34. Moreover, the rotation of the telescopic cover 32 can coordinate with the toothed belt 36 to synchronously drive all the locking gears 35 to rotate. The rotation of the threaded column 37 can be used to disassemble and assemble the mold plate 38 through the threaded connection.

[0046] Finally, by rotating the threaded rod 43, the Y-shaped plate 44 can be moved left and right along the inner side of the base 1. At this time, the movement of the Y-shaped plate 44 can drive the U-shaped block 45 on it to move accordingly. When the U-shaped block 45 moves, it will push the rotating seat 41 to rotate along the connecting rod 42, thereby adjusting the position and angle of the hollow plate 31 on it, so that the device can adjust the stamping and bending angles as needed.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sheet metal bending die with a quick positioning groove, comprising a base (1), characterized in that, The base (1) is provided with a positioning mechanism (2) at the top, which can facilitate the positioning of sheet metal parts during operation. The base (1) is provided with a replacement mechanism (3) on the outside, which can facilitate the replacement of molds according to needs. The base (1) is provided with an angle adjustment mechanism (4) inside, which is used to adjust the angle of sheet metal parts during processing. The positioning mechanism (2) includes a motor (21), which is fixedly connected to the top of the inner side of the base (1). The top of the base (1) is connected to a connecting cover (24). The output end of the motor (21) passes through the base (1) and is fixedly connected to a circular gear (22). The left and right sides of the inner side of the connecting cover (24) are slidably connected to racks (23). The outer side of the racks (23) is fixedly connected to an L-shaped plate (25). The top of the inner side of the L-shaped plate (25) is fixedly connected to a spring rod (26). The left and right ends of the spring rod (26) are rotatably connected to spring telescopic plates (27). The bottom of the spring telescopic plates (27) is rotatably connected to a rotating wheel plate (28). The bottom of the outer side of the base (1) is provided with a support assembly (29).

2. The sheet metal bending die with a quick positioning groove according to claim 1, characterized in that, The replacement mechanism (3) includes a hollow plate (31) and a toothed belt (36). The hollow plate (31) is located on the top left side of the base (1). An electric telescopic rod (34) is fixedly connected to the front and rear sides of the top of the hollow plate (31). A telescopic cover (32) is rotatably connected to the outer side of the electric telescopic rod (34). A hollow plate (33) is rotatably connected to the top of the telescopic cover (32). A locking gear (36) is rotatably connected to the front and rear sides of the hollow plate (33) and the hollow plate (31). 5) The gears (35) are all connected by a toothed belt (36). The upper and lower sides of the telescopic cover (32) pass through the hollow plate two (33) and the hollow plate one (31) respectively and are fixedly connected to the corresponding gears (35). The front and rear sides of the hollow plate one (31) and the hollow plate two (33) are rotatably connected with threaded columns (37). The outer side of the threaded column (37) is fixedly connected to the corresponding gears (35). The outer side of the threaded column (37) is threadedly connected to a mold plate (38).

3. The sheet metal bending die with a quick positioning groove according to claim 1, characterized in that, The angle adjustment mechanism (4) includes a rotating seat (41), which is fixedly connected to the bottom of the hollow plate (31). A connecting rod (42) is fixedly connected to the front and rear sides of the left middle of the base (1). The connecting rod (42) is rotatably connected to the rotating seat (41). A threaded rod (43) is rotatably connected to the bottom inner side of the base (1). A Y-shaped plate (44) is threadedly connected to the outer side of the threaded rod (43). A plurality of U-shaped blocks (45) are rotatably connected to the left side of the Y-shaped plate (44) through the base (1). The top of the U-shaped block (45) is fixedly connected to the rotating seat (41). A limit component (46) is provided on the outside of the rotating seat (41). A protective component (47) is provided on the middle left side of the base (1).

4. The sheet metal bending die with a quick positioning groove according to claim 1, characterized in that, The support assembly (29) includes a mounting plate (291), and a plurality of mounting plates (291) are fixedly connected to the outer bottom of the base (1), and a bracket (292) is fixedly connected to the outer side of the mounting plate (291).

5. The sheet metal bending die with a quick positioning groove according to claim 1, characterized in that, The positioning mechanism (2) also includes guide rods (210), two guide rods (210) are fixedly connected to the left and right sides inside the connecting cover (24) respectively, and the outer side of the guide rods (210) is slidably connected to the L-shaped plate (25).

6. The sheet metal bending die with a quick positioning groove according to claim 1, characterized in that, The positioning mechanism (2) also includes a slide groove (211), and multiple slide grooves (211) are respectively opened on the left and right sides inside the corresponding L-shaped plate (25), and the outer side of the rotating plate (28) is slidably connected to the slide groove (211).

7. The sheet metal bending die with a quick positioning slot according to claim 2, characterized in that, The replacement mechanism (3) also includes nuts (39), two nuts (39) are rotatably connected to the front and rear sides of the top of the hollow plate (33), and the bottom of the nuts (39) penetrates the hollow plate (33) and is fixedly connected to the corresponding locking gear (35).

8. The sheet metal bending die with a quick positioning slot according to claim 3, characterized in that, The limiting component (46) includes a rotating block (461), two rotating blocks (461) are rotatably connected to the outside of the corresponding connecting rod (42), the outside of the rotating block (461) passes through the connecting rod (42) and is fixedly connected to the rotating seat (41), and the bottom of the connecting rod (42) is slidably connected to the limiting block (462).

9. The sheet metal bending die with a quick positioning slot according to claim 3, characterized in that, The protective component (47) includes a mounting groove (471) which is located in the middle left side of the base (1), and a pad (472) is fixedly connected to the inner side of the mounting groove (471).

10. The sheet metal bending die with a quick positioning slot according to claim 3, characterized in that, The angle adjustment mechanism (4) also includes a knob (48), which is rotatably connected to the bottom right side of the base (1). The outer side of the knob (48) passes through the base (1) and is fixedly connected to the threaded rod (43).