A bending mechanism for continuous multi-section bending of sheet metal

By designing an automated bending mechanism that includes a bed assembly, a transmission assembly, an R-bending machine, and an L-bending machine, multi-segment, multi-angle sheet metal bending was achieved, solving the problem that traditional bending mechanisms could not meet diverse needs and improving efficiency and precision.

CN224475502UActive Publication Date: 2026-07-10BEIJING LONG-MARCH LAUNCH VEHICLE EQUIP TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING LONG-MARCH LAUNCH VEHICLE EQUIP TECH CO LTD
Filing Date
2025-05-26
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing sheet metal bending mechanisms can only achieve right-angle bends, which cannot meet the needs of diversified refrigerator shell designs and cannot achieve multi-segment, multi-angle 90° bends.

Method used

A bending mechanism comprising a bed assembly, a transmission assembly, a front positioning assembly, an R-bending machine, an L-bending machine, a pressing assembly, and a lifting roller assembly was designed. Through servo adjustment assembly and PLC control, it can achieve multi-segment, multi-angle automatic bending, replacing traditional manual operation.

Benefits of technology

It achieves automated multi-segment, multi-angle bending, saves labor, improves efficiency, avoids the problem of inaccurate manual positioning, and meets the diversified needs of the market.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of automated production, and in particular to a bending mechanism for continuous multi-segment bending of sheet metal. The bending mechanism includes: a pressure assembly screwed to the middle of a bed assembly; an R-bending machine and an L-bending machine, mirror images of each other, symmetrically arranged on both sides of the pressure assembly; a guide rail a, two sets each of servo adjustment components a and b, mounted on the bed assembly; the nut in servo adjustment component a is bolted to the base plate of the R-bending machine and the L-bending machine respectively; the nut in servo adjustment component a is bolted to the base plate of the lifting roller assembly respectively; the fixed end of the transmission component is symmetrically installed at both ends of the bed assembly, and the movable end is screwed to the left side of the R-bending machine and the right side of the L-bending machine respectively; a belt is arranged between the fixed end and the movable end; the lifting roller assembly is arranged between the transmission component and the bending machine, inserted into the belt gap of the transmission component. This invention can complete a right-angle bend in one operation, or complete 90° bends in multiple segments at multiple angles.
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Description

Technical Field

[0001] This utility model relates to the field of automated production, and in particular to a bending mechanism for continuous multi-segment bending of sheet metal. Background Technology

[0002] In automated sheet metal forming lines in the home appliance industry, the top corners of refrigerator shells require bending structures. Currently, sheet metal bending mechanisms on the market perform right-angle bending. However, with the development of the home appliance industry, refrigerator shapes are becoming increasingly diverse, and simply designing the top of the refrigerator as a right angle can no longer meet customer needs. The market currently needs a bending mechanism that can complete a 90° bend by splitting the right angle and using multiple segments and angles. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bending mechanism for continuous multi-segment bending of sheet metal, which can complete right-angle bending in one go, or split the right angle according to the needs to complete 90° bending in multiple segments and at multiple angles, so as to meet the diversified needs of the market.

[0004] This utility model provides a bending mechanism for continuous multi-segment bending of sheet metal, including: bed assembly, transmission assembly, front positioning assembly, R bending machine, pressing assembly, L bending machine, and lifting roller assembly;

[0005] The pressure assembly is screwed to the middle of the bed assembly.

[0006] The R-bending machine and the L-bending machine are mirror images of each other, symmetrically arranged on both sides of the pressing assembly; the bed assembly is equipped with two guide rails a, two servo adjustment components a, and two servo adjustment components b.

[0007] The servo adjustment component a has its nut bolted to the base plate of the R bending machine and the L bending machine, respectively, so as to drive the R bending machine and the L bending machine to move linearly via the guide rail a installed on its bottom surface.

[0008] The servo adjustment component a has its nut seat bolted to the bottom plate of the lifting roller assembly, so as to drive the lifting roller assembly to make horizontal linear motion via the guide rail a installed on its bottom surface.

[0009] The fixed ends of the transmission assembly are symmetrically installed at both ends of the bed assembly, and the movable ends are screwed to the left side of the R-bending machine and the right side of the L-bending machine, respectively; a belt is arranged between the fixed end and the movable end.

[0010] The lifting roller assembly is positioned between the transmission assembly and the bending machine, and is inserted into the belt gap of the transmission assembly.

[0011] In one specific embodiment of this utility model, the two sets of guide rails a are screwed onto the guide rail mounting plates on the upper and lower sides of the bed assembly, and the two sets of servo adjustment components a and two sets of servo adjustment components b are respectively symmetrically screwed onto both sides of the center of the bed assembly; the servo adjustment components a and b are located in the middle of the two sets of guide rails a.

[0012] In one specific embodiment of this utility model, the R-bending machine includes a frame, a servo-driven knife-turning assembly, a cantilever beam assembly, a pad knife, a pressing knife assembly, a servo-driven rotating arm assembly, an inner support assembly, a side positioning assembly, a side pulling assembly, and a cylinder.

[0013] The frame is fixed to the bed assembly.

[0014] The frame is respectively screwed with a servo flipping tool assembly, a cantilever beam assembly, a pad tool, a side positioning assembly, a side pulling assembly, and a cylinder body of a cylinder;

[0015] The servo flipper assembly is screwed onto the top of the frame and is located to the left of the cantilever beam assembly; the cantilever beam assembly is screwed onto the top of the frame and is located to the right of the frame.

[0016] The pressure knife assembly is screwed to the bottom of the cantilever beam assembly, and the inner support assembly is screwed to the upper middle position of the cantilever beam assembly.

[0017] The servo rotary arm assembly is screwed to the left side of the servo flipper assembly.

[0018] In one specific embodiment of this utility model, the servo flipping tool assembly includes a servo motor a connector, a pinion, a sector gear, a flipping plate, a transmission shaft, a flipping tool, and a spindle;

[0019] The servo motor a and the connecting seat are screwed onto the frame. The pinion is connected to the transmission shaft via an expansion sleeve. The transmission shaft is clamped to the servo motor a. The sector gear is connected to the connecting seat via the spindle. The flip plate is bolted to the sector gear and the flip knife. Driven by the servo motor a, the flip plate rotates around the spindle.

[0020] In a specific embodiment of this utility model, the cantilever beam assembly includes a column, a guide rail b, and a beam. The column is screwed onto the frame, and the beam is screwed onto the slider in the guide rail b and the cylinder rod of the cylinder, and moves vertically under the action of the cylinder.

[0021] In a specific embodiment of this utility model, the servo rotating arm assembly includes a bearing housing, a bearing, a rotating arm mounting base, a rotating arm, a rotating shaft, a servo motor b, a motor mounting base, a drive gear, and a driven gear. The bearing housing and the motor mounting base are screwed onto the servo flipper assembly. The bearing is installed inside the bearing housing. The rotating shaft is connected to the bearing housing through the bearing. One end of the rotating arm mounting base is tightly connected to the rotating shaft, and the other end is screwed onto the rotating arm. The servo motor b is screwed onto the motor mounting base. The drive gear is keyed to the servo motor b. The driven gear is tightly connected to the rotating shaft. The rotating arm rotates around the rotating shaft under the drive of the servo motor b.

[0022] In one specific embodiment of this utility model, a vacuum suction cup is also included, which is connected to the side of the rotating arm.

[0023] In one specific embodiment of this utility model, the pressing assembly includes a pressing bracket, a lifting and supporting assembly, a pressing cylinder, and a pad; the pressing bracket is screwed onto the bed assembly, and the lifting and supporting assembly, the pressing cylinder, and the pad are screwed onto the pressing bracket.

[0024] In a specific embodiment of this utility model, the lifting roller assembly includes a roller bracket, a lifting cylinder, and a roller; the lifting cylinder is screwed to the roller bracket and the roller respectively, and the roller moves vertically under the drive of the lifting cylinder; the left lifting roller assembly is located between the left fixed end of the transmission assembly and the R bending machine, and the right lifting roller assembly is located between the right fixed end of the transmission assembly and the L bending machine, and the roller is arranged in the belt gap of the transmission assembly.

[0025] In one specific embodiment of this utility model, the actions of the bending mechanism are all controlled by a PLC.

[0026] Compared with existing technologies, this utility model provides a bending mechanism for continuous multi-segment bending of sheet metal, breaking through the traditional sheet metal bending technology that only allows right-angle bends at the top corner of a refrigerator. It achieves an automatic adjustment and splitting process for right-angle bends into multi-angle composite bending. This changes the traditional multi-segment sheet metal bending process, optimizing manual multi-segment bending into automatic continuous bending. This not only saves labor and improves efficiency but also avoids the drawbacks of repetitive manual positioning and inaccurate precision. It meets the diversified needs of the market. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a bending mechanism used for continuous multi-segment bending of sheet metal.

[0028] Figure 2 This is the front view of a bending mechanism used for continuous multi-segment bending of sheet metal;

[0029] Figure 3 This is a schematic diagram of the bed frame components;

[0030] Figure 4 This is a front view of part of the R-bending machine structure;

[0031] Figure 5 This is a reverse view of part of the R-bending machine structure;

[0032] Figure 6 This is a schematic diagram of the servo-driven blade flipping component;

[0033] Figure 7 This is a schematic diagram of a cantilever beam assembly;

[0034] Figure 8 This is a schematic diagram of the servo swing arm assembly;

[0035] Figure 9 This is a schematic diagram of the material pressing assembly;

[0036] Figure 10 This is a schematic diagram of the lifting idler roller assembly;

[0037] In the picture,

[0038] 1-Bed assembly, 2-Transmission assembly, 3-Front positioning assembly, 4-R-bending machine, 5-Pressure assembly, 6-L-bending machine, 7-Lifting roller assembly, 8-Guide rail a, 9-Servo adjustment assembly a, 10-Servo adjustment assembly b, 11-Frame, 12-Servo knife tilting assembly, 13-Cantilever beam assembly, 14-Knife pad, 15-Knife pressing assembly, 16-Servo rotating arm assembly, 17-Inner support assembly, 18-Side positioning assembly, 19-Side pull assembly, 20-Cylinder, 21-Servo motor a, 22-Connecting seat, 23-Pin gear 24-Sector gear, 25-Flip plate, 26-Drive shaft, 27-Flipping knife, 28-Mandrel, 29-Column, 30-Guide rail b, 31-Crossbeam, 32-Bearing housing, 33-Bearing, 34-Rotating arm mounting base, 35-Rotating arm, 36-Vacuum suction cup, 37-Rotating shaft, 38-Servo motor b, 39-Motor mounting base, 40-Drive gear, 41-Driven gear, 42-Pressure support bracket, 43-Lifting and supporting assembly, 44-Pressure cylinder, 45-Pad plate, 46-Roller bracket, 47-Lifting cylinder; 48-Roller. Detailed Implementation

[0039] To further understand this utility model, the embodiments of this utility model are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting this utility model.

[0040] An embodiment of this utility model discloses a bending mechanism for continuous multi-segment bending of sheet metal, such as... Figure 1 As shown, it includes:

[0041] Bed assembly 1, transmission assembly 2, front positioning assembly 3, R-bending machine 4, pressing assembly 5, L-bending machine 6, lifting roller assembly 7.

[0042] The pressure assembly 5 is screwed to the middle position of the bed assembly 1.

[0043] The R-bending machine 4 and the L-bending machine 6 are mirror images of each other and are symmetrically arranged on both sides of the pressing assembly 5.

[0044] The transmission assembly 2 is screwed to the left and right sides of the bed assembly 1, and the front positioning assembly 3 is screwed to the left side of the bed assembly 1, that is, the direction of sheet material output. The front positioning assembly 3 is located below the transmission assembly 2.

[0045] The lifting roller assembly 7 is arranged between the transmission assembly 2 and the bending machine, and is inserted in the belt gap of the transmission assembly 2; specifically, the left lifting roller assembly is located between the left fixed end of the transmission assembly 2 and the R bending machine 4, and the right lifting roller assembly is located between the right fixed end of the transmission assembly 2 and the L bending machine 6.

[0046] The bed assembly 1 is equipped with two sets of guide rails a8, two sets of servo adjustment components a9, and two sets of servo adjustment components b10. The two sets of guide rails a8 are screwed onto the guide rail mounting plates on the upper and lower sides of the bed assembly 1. The two sets of servo adjustment components a9 and two sets of servo adjustment components b10 are symmetrically screwed onto the two sides of the center of the bed assembly 1. The servo adjustment components a9 and b10 are located between the two sets of guide rails a8.

[0047] The servo adjustment component a10 has its nut bolts connected to the base plates of the R-bending machine 4 and the L-bending machine 6 respectively, so as to drive the R-bending machine 4 and the L-bending machine 6 to make linear motion via the guide rail a8 installed on its bottom surface.

[0048] The servo adjustment component a9 has its nut seat bolted to the base plate of the lifting roller assembly 7, so as to drive the lifting roller assembly 7 to make horizontal linear motion via the guide rail a8 installed on its bottom surface.

[0049] The fixed ends of the transmission assembly 2 are symmetrically installed at both ends of the bed assembly 1, and the movable ends are screwed to the left side of the R bending machine 4 and the right side of the L bending machine 6 respectively; five narrow belts are arranged in the middle.

[0050] The R-bending machine 4 includes a frame 11, a servo flipping knife assembly 12, a cantilever beam assembly 13, a pad knife 14, a pressing knife assembly 15, a servo rotating arm assembly 16, an inner support assembly 17, a side positioning assembly 18, a side pulling assembly 19, and a cylinder 20.

[0051] The frame 11 is respectively screwed with the servo flipping assembly 12, the cantilever beam assembly 13, the pad knife 14, the side positioning assembly 18, the side pulling assembly 19, and the cylinder body of the cylinder 20;

[0052] The servo-driven blade-turning assembly 12 includes a servo motor a21, a connecting seat 22, a pinion 23, a sector gear 24, a flip plate 25, a drive shaft 26, a blade 27, and a spindle 28. The servo motor a21 and the connecting seat 22 are screwed onto the frame 11. The pinion 23 is expanded and connected to the drive shaft 26. The drive shaft 26 is clamped to the servo motor a21. The sector gear 24 is connected to the connecting seat 22 via the spindle 28. The flip plate 25 is bolted to the sector gear 24 and the blade 27. Driven by the servo motor a21, the flip plate 25 rotates around the spindle 28. The servo-driven blade-turning assembly 12 is screwed above the frame 11 and located to the left of the cantilever beam assembly 13.

[0053] The cantilever beam assembly 13 includes a column 29, a guide rail b30, and a beam 31. The column 29 is screwed onto the frame 11. The beam 31 is screwed onto the slider in the guide rail b30 and the cylinder rod of the cylinder 20, and moves vertically under the action of the cylinder. The cantilever beam assembly 13 is screwed onto the top of the frame 11 and is located on the right side of the frame 11.

[0054] The pressure knife assembly 15 is screwed to the lower part of the cantilever beam assembly 13, and the inner support assembly 17 is screwed to the upper middle part of the cantilever beam assembly 13.

[0055] The servo rotating arm assembly 16 includes a bearing housing 32, a bearing 33, a rotating arm mounting base 34, a rotating arm 35, a vacuum suction cup 36, a rotating shaft 37, a servo motor b38, a motor mounting base 39, a drive gear 40, and a driven gear 41. The bearing housing 32 and the motor mounting base 39 are screwed onto the servo flipper assembly 12. The bearing 33 is installed inside the bearing housing 32. The rotating shaft 37 is connected to the bearing housing 32 via the bearing 33. The rotating arm mounting base 34 is tightly connected to one end of the rotating shaft 37 and screwed to the rotating arm 35 at the other end. The vacuum suction cup 36 is screwed to the rotating arm 35. The servo motor b38 is screwed to the motor mounting base 39. The drive gear 40 is keyed to the servo motor b38. The driven gear 41 is tightly connected to the rotating shaft 37. The rotating arm 35 rotates around the rotating shaft 37 under the drive of the servo motor b38. The servo rotary arm assembly 16 is screwed to the left side of the servo flipper assembly 12;

[0056] The pressing assembly 5 includes a pressing bracket 42, a lifting and supporting assembly 43, a pressing cylinder 44, and a pad 45. The pressing bracket 42 is screwed onto the bed assembly 1, and the lifting and supporting assembly 43, the pressing cylinder 44, and the pad 45 are screwed onto the pressing bracket 42. The pressing assembly 5 is screwed into the middle position of the bed assembly 1, located between the R-bending machine 4 and the L-bending machine 6.

[0057] The lifting roller assembly 7 includes a roller bracket 46, a lifting cylinder 47, and a roller 48. The lifting cylinder 47 is screwed to both the roller bracket 46 and the roller 48, and the roller 48 moves vertically under the drive of the lifting cylinder 47. The left lifting roller assembly 7 is located between the left fixed end of the transmission assembly 2 and the R bending machine 4, and the right lifting roller assembly 7 is located between the right fixed end of the transmission assembly 2 and the L bending machine 6. The roller 48 is arranged in the belt gap of the transmission assembly 2.

[0058] The operation of the aforementioned angle bending mechanism for adjustable sheet metal thickness is controlled by a PLC.

[0059] refer to Figure 1 , Figure 2 , Figure 4 , Figure 9 and Figure 10 Before the workpiece enters the mechanism, the servo adjustment component a10 is activated, driving the R-bending machine 4 and L-bending machine 6, which are respectively screwed to their respective nut seats, to move horizontally in a straight line via the guide rail a8 mounted on their bottom surfaces, until the R-bending machine 3 and the L-bending machine 6 reach the position set for the first bend. The cantilever beam assembly 13, the lifting and supporting assembly 43, and the pressing cylinder 44 are in the high position, and the support roller 48 is in the low position, opening the channel for the workpiece to enter the mechanism.

[0060] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The workpiece needs to be transported from the previous station to this mechanism. When entering this mechanism, the transmission assembly 2 installed on the bed assembly 1 first guides the workpiece, and the workpiece stops at the front positioning assembly 3, completing the front positioning of the workpiece. Then, the side pull assembly 19 moves the workpiece to the side positioning assembly 18, completing the side positioning of the workpiece.

[0061] refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 After the workpiece is positioned, the cantilever beam assembly 13, driven by the cylinder 20, moves the pressing knife assembly 15 downwards until it presses onto the workpiece. A pad knife 14 lies below the workpiece. At this time, the servo motor a21 in the servo flipping knife assembly 12 is activated. Driven by the meshing pinion 23 and sector gear 24, the flipping knife 27 rotates around the mandrel 28, cooperating with the pressing knife assembly 15 to bend the workpiece. The bending angle of the workpiece can be servo-adjusted according to different requirements.

[0062] refer to Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 After the first bend of the workpiece is completed, the pressure cylinder 44 in the pressure assembly 5 extends to the low position and clamps the workpiece with the pad 45. The roller 48 in the lifting roller assembly 7 moves to the high position under the drive of the lifting cylinder 47. The roller bracket 46 moves horizontally and linearly via the guide rail a8 installed on its bottom surface under the drive of the servo adjustment assembly a9 until the roller 48 supports the workpiece. Then, the cantilever beam assembly 13 drives the pressure knife assembly 15 to move upward and away from the workpiece under the drive of the cylinder 20. The servo adjustment assembly a10 is started, which drives the R bending machine 3 and L bending machine 5, which are respectively screwed to the nut seat, to move horizontally and linearly towards the inside of the workpiece via the guide rail a8 installed on its bottom surface until the R bending machine 3 and the L bending machine 6 reach the position set for the second bend. At this time, the servo motor b38 in the servo rotating arm assembly 16 is started. Driven by the meshing active gear 40 and passive gear 41, the rotating arm 35 rotates towards the workpiece with the rotating shaft 37 as the center until the vacuum suction cup 36 contacts the workpiece and adsorbs the workpiece under vacuum. At this time, the servo flipping tool assembly 12 repeats the action of the first bend and performs the second bend on the workpiece.

[0063] If a third bend is required, the bending mechanism repeats the above steps.

[0064] Until the final 90° bend is completed, the inner support assembly 17 and the rotating arm 35 clamp the workpiece, waiting for the next station to pick up the material. After the material is picked up, the bending mechanism resets to the state before the workpiece entered the mechanism, waiting for the next workpiece to enter.

[0065] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bending mechanism for continuous multi-segment bending of sheet metal, characterized in that, include: Bed assembly (1), transmission assembly (2), front positioning assembly (3), R bending machine (4), pressing assembly (5), L bending machine (6), lifting roller assembly (7); The pressure assembly (5) is screwed to the middle position of the bed assembly (1). The R-bending machine (4) and the L-bending machine (6) are mirror images of each other and are symmetrically arranged on both sides of the pressing assembly (5); The bed assembly (1) is equipped with two guide rails a (8), two servo adjustment components a (9), and two servo adjustment components b (10). The servo adjustment component a (9) is bolted to the base plate of the R bending machine (4) and the L bending machine (6) respectively, so as to drive the R bending machine (4) and the L bending machine (6) to make linear motion via the guide rail a (8) installed on its bottom surface. The servo adjustment component a (9) is bolted to the bottom plate of the lifting roller assembly (7) to drive the lifting roller assembly (7) to make horizontal linear motion via the guide rail a (8) installed on its bottom surface; The fixed ends of the transmission assembly (2) are symmetrically installed on both ends of the bed assembly (1), and the movable ends are respectively screwed to the left side of the R bending machine (4) and the right side of the L bending machine (6); a belt is arranged between the fixed end and the movable end. The lifting roller assembly (7) is arranged between the transmission assembly (2) and the bending machine, and is inserted in the belt gap of the transmission assembly (2).

2. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 1, characterized in that, The two sets of guide rails a (8) are screwed onto the guide rail mounting plates on the upper and lower sides of the bed assembly (1). The two sets of servo adjustment components a (9) and the two sets of servo adjustment components b (10) are symmetrically screwed onto the two sides of the center of the bed assembly (1). The servo adjustment components a (9) and b (10) are located in the middle of the two sets of guide rails a (8).

3. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 1, characterized in that, The R-bending machine (4) includes a frame (11), a servo flipping knife assembly (12), a cantilever beam assembly (13), a pad knife (14), a pressing knife assembly (15), a servo rotating arm assembly (16), an inner support assembly (17), a side positioning assembly (18), a side pulling assembly (19), and a cylinder (20). The frame (11) is fixed to the bed assembly (1). The frame (11) is screwed with a cylinder body that is equipped with a servo flipping tool assembly (12), a cantilever beam assembly (13), a pad tool (14), a side positioning assembly (18), a side pulling assembly (19), and a cylinder (20); The servo flipper assembly (12) is screwed onto the top of the frame (11) and is located on the left side of the cantilever beam assembly (13); the cantilever beam assembly (13) is screwed onto the top of the frame (11) and is located on the right side of the frame (11). The pressure knife assembly (15) is screwed to the bottom of the cantilever beam assembly (13), and the inner support assembly (17) is screwed to the middle position above the cantilever beam assembly (13). The servo rotating arm assembly (16) is screwed to the left side of the servo flipper assembly (12).

4. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 3, characterized in that, The servo flipper assembly (12) includes a servo motor a (21), a connecting seat (22), a pinion (23), a sector gear (24), a flipper (25), a transmission shaft (26), a flipper (27), and a spindle (28). The servo motor a (21) and the connecting seat (22) are screwed onto the frame (11). The pinion (23) is connected to the transmission shaft (26) by an expansion sleeve. The transmission shaft (26) is clamped to the servo motor a (21). The sector gear (24) is connected to the connecting seat (22) through the spindle (28). The flip plate (25) is bolted to the sector gear (24) and the flip knife (27). Under the drive of the servo motor a (21), the flip plate (25) rotates around the spindle (28).

5. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 3, characterized in that, The cantilever beam assembly (13) includes a column (29), a guide rail (30) and a beam (31). The column (29) is screwed onto the frame (11). The beam (31) is screwed onto the slider in the guide rail (30) and the cylinder rod of the cylinder (20), and moves vertically under the action of the cylinder.

6. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 3, characterized in that, The servo rotating arm assembly (16) includes a bearing housing (32), a bearing (33), a rotating arm mounting base (34), a rotating arm (35), a rotating shaft (37), a servo motor b (38), a motor mounting base (39), a drive gear (40), and a driven gear (41). The bearing housing (32) and the motor mounting base (39) are screwed onto the servo flipper assembly (12). The bearing (33) is installed inside the bearing housing (32), and the rotating shaft (37) is connected to the servo flipper assembly (12) via the bearing (33). The bearing housing (32) is connected, one end of the rotating arm mounting base (34) is tightly connected to the rotating shaft (37), and the other end is screwed to the rotating arm (35). The servo motor b (38) is screwed to the motor mounting base (39). The driving gear (40) is keyed to the servo motor b (38). The driven gear (41) is tightly connected to the rotating shaft (37). The rotating arm (35) rotates around the rotating shaft (37) under the drive of the servo motor b (38).

7. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 6, characterized in that, It also includes a vacuum suction cup (36) which is attached to the side of the rotating arm (35).

8. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 1, characterized in that, The pressing assembly (5) includes a pressing bracket (42), a lifting and supporting assembly (43), a pressing cylinder (44), and a pad (45); the pressing bracket (42) is screwed onto the bed assembly (1), and the lifting and supporting assembly (43), the pressing cylinder (44), and the pad (45) are screwed onto the pressing bracket (42).

9. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 1, characterized in that, The lifting roller assembly (7) includes a roller bracket (46), a lifting cylinder (47), and a roller (48); the lifting cylinder (47) is screwed to the roller bracket (46) and the roller (48) respectively, and the roller (48) moves vertically under the drive of the lifting cylinder (47); the left lifting roller assembly (7) is located between the left fixed end of the transmission assembly (2) and the R bending machine (4), and the right lifting roller assembly (7) is located between the right fixed end of the transmission assembly (2) and the L bending machine (6), and the roller (48) is arranged in the belt gap of the transmission assembly (2).

10. The bending mechanism for continuous multi-segment bending of sheet metal according to claim 1, characterized in that, The bending mechanism's movements are all controlled by a PLC.