Bending device of mounting bracket for flap door

Abstract

The utility model discloses a bending device of a mounting bracket for a flap door, which comprises a shell, a placing block for placing a workpiece to be bent and a stamping bending machine for bending the workpiece to be bent placed on the placing block, and further comprises a clamping and limiting mechanism and a protection mechanism, the clamping and limiting mechanism is arranged at the top of the machine shell and located on the two sides of the containing block, and the clamping and limiting mechanism comprises an abutting part and a movable matching part; the abutting parts are arranged on the top of the machine shell in a sliding mode and located on the two sides of the containing block. The movable matching part is arranged on the abutting part in a sliding mode, and the movable matching part is in an L block shape. The protection mechanism is arranged on the top of the machine shell and located on one side of the containing block. According to the technical scheme, through the clamping limiting mechanism, the two ends of the clamped and bent workpiece are allowed to freely tilt without being subjected to extra resistance. And the stress concentration of the workpiece in the bending process can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of flip-door accessories, specifically to a bending device for a mounting bracket of a flip-door. Background Technology

[0002] In existing bending devices for mounting brackets of flip doors, bending the workpiece after clamping it is a common processing method. However, this method has some drawbacks in practical applications, particularly regarding stress.

[0003] Firstly, traditional bending devices often use rigid clamping mechanisms when holding workpieces. While this mechanism ensures the stability of the workpiece during bending, it can also generate significant stress inside the workpiece due to excessive clamping force. This stress remains after bending, making the workpiece prone to deformation and cracking during subsequent use, seriously affecting the processing quality and service life of the workpiece.

[0004] Secondly, in existing bending devices, the workpiece is clamped and fixed at both ends during the bending process, preventing it from bending freely. This further exacerbates the stress concentration phenomenon inside the workpiece. Especially at the bending section of the workpiece, the stress concentration phenomenon is more severe due to the combined effect of large bending force and clamping force, making the workpiece more prone to cracks and damage in these areas.

[0005] Chinese patent (authorization announcement number CN221362048U) discloses a bending device for the production of metal brackets. It limits the position of the plate or pipe by two support seats, effectively preventing the plate or pipe from tilting and improving the bending quality. At the same time, it eliminates the need for workers to fix the pipe by hand, thus improving the safety of the device.

[0006] However, in practical use, when the above structure is used to clamp and bend a workpiece, the clamping action of the support restricts the natural deformation characteristics of the workpiece during the bending process. Specifically, during bending, the stress distribution inside the workpiece changes, and the clamping force of the support hinders this natural stress release process, thus adversely affecting the bending effect. This limitation may not only lead to a decrease in the shape accuracy of the workpiece after bending but may also increase the residual stress inside the workpiece, thereby affecting its overall performance and service life. Utility Model Content

[0007] To address the aforementioned issues, a bending device for a mounting bracket of a flip door is provided. Through a clamping and limiting mechanism, the impact of clamping stress on the workpiece during the clamping process is reduced.

[0008] To address the problems of existing technologies, this utility model provides a bending device for a mounting bracket of a flip-door, including a housing, a placement block for placing the workpiece to be bent, and a stamping and bending machine for bending the workpiece placed on the placement block. The bending device also includes a clamping and limiting mechanism and a protective mechanism. The clamping and limiting mechanism is located on the top of the housing and on both sides of the placement block, and includes a clamping part and a movable mating part. The clamping part is slidably disposed on the top of the housing and located on both sides of the placement block. The movable mating part is slidably disposed on the clamping part and is L-shaped. When the workpiece to be bent on the placement block is bent, the two ends of the bent workpiece can contact the movable mating part and drive the movable mating part to slide. The protective mechanism is located on the top of the housing and on one side of the placement block, and is used to protect the bending area when the workpiece is bent.

[0009] Preferably, the clamping and limiting mechanism further includes a setting frame, a telescopic cylinder, and an ejector rod; the setting frame is installed on the top of the housing and located on both sides of the placement block; the telescopic cylinder is installed on the setting frame and located on both sides of the placement block; the ejector rod is located at the output end of the telescopic cylinder.

[0010] Preferably, the clamping and limiting mechanism further includes a limiting sliding plate and balls; the limiting sliding plate is disposed at one end of the abutting part and is located on one side of the placement block; the balls are disposed on the limiting sliding plate and multiple balls are evenly distributed along the upper end of the limiting sliding plate; the abutting part is provided with a sliding groove for the moving mating part to slide, so that the moving mating part can slide stably along the sliding groove when it slides.

[0011] Preferably, the clamping and limiting mechanism further includes a positioning rod; the positioning rod is disposed at the top of the abutting part, and the moving mating part is in clearance fit with the positioning rod.

[0012] Preferably, the protective mechanism includes a docking block, a positioning post, and a protective plate; the docking block is located on the top of the housing and there is a pair; the positioning post is located between the docking blocks and is cylindrical; the protective plate is located on the positioning post and is fixedly connected to the positioning post.

[0013] Preferably, the protective mechanism further includes a stamping plate, a mounting bracket, and a hinge rod; the stamping plate is located below the stamping and bending machine and above the placement block; the mounting bracket is located on top of the stamping plate; one end of the hinge rod is rotatably connected to the mounting bracket, and the other end of the hinge rod is rotatably connected to the protective plate.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. This utility model, by setting a clamping and limiting mechanism, allows the two ends of the clamped and bent workpiece to be freely raised without being subject to additional resistance. This reduces stress concentration in the workpiece during the bending process.

[0016] 2. By setting a limiting sliding plate and ball bearings, this utility model ensures that the moving mating part can slide stably upward when the two ends of the workpiece are raised and in contact, thus guaranteeing the stability and accuracy of the bending process.

[0017] 3. By setting up a protective mechanism, this utility model enables the protective plate to automatically shield the workpiece when the stamping and bending machine is descending and bending. When the stamping and bending machine finishes working and rises, the protective plate can be opened by the hinge rod to remove the bent workpiece. Attached Figure Description

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of a bending device for a mounting bracket of a flip-door according to this utility model.

[0019] Figure 2 This is a front view of the bending device for a mounting bracket of a flip-up door according to this utility model.

[0020] Figure 3 This is a partial sectional three-dimensional structural diagram of a bending device for a mounting bracket of a flip-door according to this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the clamping and limiting mechanism of the bending device for the mounting bracket of a flip door according to this utility model.

[0022] Figure 5 yes Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Figure 6 This is a three-dimensional structural diagram of the telescopic cylinder and ejector rod of the bending device for the mounting bracket of a flip door according to this utility model.

[0024] Figure 7 This is a three-dimensional structural diagram of the protective plate of a mounting bracket for a flip-door in the closed state, according to the present invention.

[0025] The following are the labels in the diagram: 1. Housing; 2. Placement block; 3. Stamping and bending machine; 4. Clamping and limiting mechanism; 41. Pressing part; 411. Sliding groove; 42. Moving mating part; 43. Setting frame; 44. Telescopic cylinder; 45. Ejector rod; 46. Limiting sliding plate; 47. Ball bearing; 48. Positioning rod; 5. Protective mechanism; 51. Connecting block; 52. Positioning column; 53. Protective plate; 54. Stamping plate; 55. Mounting frame; 56. Hinge rod. Detailed Implementation

[0026] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0027] See Figures 1-3 As shown, a bending device for a mounting bracket of a flip door includes a housing 1, a placement block 2 for placing a workpiece to be bent, and a stamping bending machine 3 for bending the workpiece placed on the placement block 2. The bending device also includes a clamping and limiting mechanism 4 and a protective mechanism 5. The clamping and limiting mechanism 4 is located on the top of the housing 1 and on both sides of the placement block 2. The clamping and limiting mechanism 4 includes a pressing part 41 and a moving mating part 42. The pressing part 41 is slidably disposed on the top of the housing 1 and is located on both sides of the placement block 2. The moving mating part 42 is slidably disposed on the pressing part 41 and is L-shaped. When the workpiece to be bent on the placement block 2 is bent, the two ends of the bent workpiece can contact the moving mating part 42 and drive the moving mating part 42 to slide. The protective mechanism 5 is located on the top of the housing 1 and on one side of the placement block 2. The protective mechanism 5 is used to protect the bending area when the workpiece is bent.

[0028] The top of the housing 1 is equipped with a hydraulic cylinder for driving the stamping and bending machine 3 to move downwards. When the hydraulic cylinder is activated, it drives the stamping and bending machine 3 to descend until it presses against and bends the workpiece on the placement block 2. The placement block 2 has a bending groove for bending the workpiece, which guides the bending process. The contact part between the stamping and bending machine 3 and the bending groove is the same. When the stamping and bending machine 3 moves towards the placement block 2 along the shape of the bending groove, it can accurately bend the workpiece to be bent within the placement block 2. The moving mating part 42 is L-shaped and can clamp the workpiece to be bent on the placement block 2. When bending a workpiece is required, the workpiece to be bent is first placed on the placement block 2, and then the pressing part 41 presses against and limits the workpiece on both sides of the placement block 2. Then, the hydraulic cylinder drives the stamping and bending machine 3 to clamp and bend the workpiece to be bent on the placement block 2. During the bending process, the two ends of the workpiece will lift up. When they lift up, the two ends of the workpiece can contact the moving mating part 42. When they contact, the moving mating part 42 can be driven to slide upward along the clamping part 41. This allows the two ends of the clamped and bent workpiece to lift up freely without being subjected to additional resistance. This can reduce stress concentration in the workpiece during the bending process.

[0029] See Figures 4-6 As shown, the clamping and limiting mechanism 4 also includes a mounting frame 43, a telescopic cylinder 44, and an ejector rod 45; the mounting frame 43 is installed on the top of the housing 1 and located on both sides of the placement block 2; the telescopic cylinder 44 is installed on the mounting frame 43 and located on both sides of the placement block 2; the ejector rod 45 is located at the output end of the telescopic cylinder 44.

[0030] When it is necessary to drive the clamping part 41 to clamp the workpiece to be bent on the placement block 2, the telescopic cylinder 44 is first started and drives the ejector rod 45 to move. When the ejector rod 45 moves, it can drive the clamping part 41 to clamp and limit the workpiece to be bent on both sides of the placement block 2, so as to prevent the workpiece to be bent from shifting when it is bent.

[0031] See Figure 4 and Figure 5 As shown, the clamping and limiting mechanism 4 also includes a limiting sliding plate 46 and ball bearings 47; the limiting sliding plate 46 is disposed at one end of the abutment part 41 and is located on one side of the placement block 2; the ball bearings 47 are disposed on the limiting sliding plate 46 and a plurality of ball bearings 47 are evenly distributed along the upper end of the limiting sliding plate 46; the abutment part 41 is provided with a sliding groove 411 for the sliding of the movable mating part 42, so that the movable mating part 42 can slide stably along the sliding groove 411 when it slides.

[0032] When the workpiece in the placement block 2 is contacted and bent by the stamping and bending machine 3, both ends of the workpiece will lift up. When lifted up, both ends of the workpiece can contact the movable mating part 42. Upon contact, the movable mating part 42 can be driven to slide upward along the sliding groove 411 and the limiting sliding plate 46 provided on the pressing part 41. During the sliding process, the movable mating part 42 can contact the ball bearings 47 provided on the limiting sliding plate 46. The provision of the ball bearings 47 can significantly reduce the frictional resistance of the movable mating part 42 during the upward or downward sliding process. This ensures that the movable mating part 42 can perform stable upward sliding when the two ends of the workpiece are lifted up and in contact, thus guaranteeing the stability and accuracy of the bending process.

[0033] See Figure 6 As shown, the clamping and limiting mechanism 4 also includes a positioning rod 48; the positioning rod 48 is disposed at the top of the abutting part 41, and the moving mating part 42 is in clearance fit with the positioning rod 48.

[0034] A return spring can be installed on the positioning rod 48. One end of the return spring is fixedly connected to the sliding groove 411, and the other end of the return spring is fixedly connected to the moving mating part 42. When the moving mating part 42 slides upward, it can slide stably along the positioning rod 48. During this process, the return spring can be compressed. After the workpiece in the placement block 2 is bent, the stamping and bending machine 3 rises and uses a robotic arm to pick up the bent workpiece in the placement block 2. After picking it up, the return spring is released, causing the moving mating part 42 to move downward along the positioning rod 48 to return to its initial position.

[0035] See Figure 7As shown, the protective mechanism 5 includes a docking block 51, a positioning post 52, and a protective plate 53; the docking block 51 is located on the top of the housing 1 and has a pair; the positioning post 52 is located between the docking blocks 51 and is cylindrical; the protective plate 53 is located on the positioning post 52 and is fixedly connected to the positioning post 52.

[0036] When the hydraulic cylinder drives the stamping and bending machine 3 to move downward, it can drive the positioning column 52 to rotate. When the positioning column 52 rotates, it can drive the protective plate 53 to rotate until the protective plate 53 blocks the bending area of ​​the placement block 2. This ensures that when the stamping and bending machine 3 is bending, the protective plate 53 can protect the bending area and prevent the bent workpiece from splashing.

[0037] See Figure 7 As shown, the protective mechanism 5 also includes a stamping plate 54, a mounting bracket 55, and a hinge rod 56; the stamping plate 54 is located below the stamping and bending machine 3 and above the placement block 2; the mounting bracket 55 is located on top of the stamping plate 54; one end of the hinge rod 56 is rotatably connected to the mounting bracket 55, and the other end of the hinge rod 56 is rotatably connected to the protective plate 53.

[0038] When the hydraulic cylinder drives the stamping and bending machine 3 to move downward, it can drive the stamping plate 54 to move synchronously. When the stamping plate 54 moves, it can drive the protective plate 53 to rotate along the positioning column 52 through the hinge rod 56. This realizes that when the stamping and bending machine 3 is bending downward, the protective plate 53 can be automatically shielded by the hinge rod 56. When the stamping and bending machine 3 finishes working and rises, the protective plate 53 can be opened by the hinge rod 56 to remove the bent workpiece.

[0039] During operation, the workpiece to be bent is first placed on the placement block 2. Then, the telescopic cylinder 44 is activated, driving the ejector rod 45 to move. The movement of the ejector rod 45 drives the clamping part 41 to clamp and limit the workpiece on both sides of the placement block 2, ensuring that the workpiece will not shift during bending. Next, the hydraulic cylinder drives the stamping and bending machine 3 to clamp and bend the workpiece on the placement block 2. During bending, both ends of the workpiece will lift up and contact the moving mating part 42. At this time, the moving mating part 42 slides upward along the sliding groove 411 on the clamping part 41 and the limiting sliding plate 46. During sliding, the moving mating part 42 contacts the ball bearings 47 on the limiting sliding plate 46. The ball bearings 47 significantly reduce the frictional resistance of the moving mating part 42 during sliding, ensuring that the moving mating part 42 can slide stably upward when the two ends of the workpiece lift up and contact it, thereby ensuring the stability and accuracy of the bending process. A return spring is provided on the positioning rod 48, one end of which is fixedly connected to the sliding groove 411, and the other end is fixedly connected to the movable mating part 42. When the movable mating part 42...

[0040] During the upward sliding motion, the workpiece slides stably along the positioning rod 48, compressing the return spring in the process. After the workpiece bending is completed, the press bending machine 3 rises, at which point the return spring releases energy, driving the moving mating part 42 to descend and return to its initial position along the positioning rod 48. Furthermore, when the hydraulic cylinder drives the press bending machine 3 to descend, it also drives the stamping plate 54 to move synchronously. The movement of the stamping plate 54 drives the protective plate 53 to rotate along the positioning post 52 via a rotating hinge rod 56. Thus, when the press bending machine 3 is bending downwards, the protective plate 53 automatically shields the bending area via the hinge rod 56; and when the press bending machine 3 finishes working and rises, the protective plate 53 opens via the hinge rod 56 to allow the bent workpiece to be removed.

[0041] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A bending device for a mounting bracket of a flip-door, comprising a housing (1), a placement block (2) for placing a workpiece to be bent, and a stamping and bending machine (3) for bending the workpiece placed on the placement block (2), characterized in that, The bending device also includes a clamping and limiting mechanism (4) and a protective mechanism (5); The clamping and limiting mechanism (4) is located on the top of the housing (1) and on both sides of the placement block (2). The clamping and limiting mechanism (4) includes a clamping part (41) and a moving engagement part (42). The abutment (41) is slidably disposed on the top of the housing (1), and the abutment (41) is located on both sides of the placement block (2); The movable mating part (42) is slidably disposed on the abutting part (41), and the movable mating part (42) is L-shaped. When the workpiece to be bent on the placement block (2) is bent, the two ends of the bent workpiece can contact the movable mating part (42) and drive the movable mating part (42) to slide. The protective mechanism (5) is located on the top of the housing (1) and on one side of the placement block (2). The protective mechanism (5) is used to protect the bending area when the workpiece to be bent is bent.

2. The bending device for a mounting bracket of a flip-up door according to claim 1, characterized in that, The clamping and limiting mechanism (4) also includes a setting frame (43), a telescopic cylinder (44), and an ejector rod (45); the setting frame (43) is installed on the top of the housing (1) and located on both sides of the placement block (2); the telescopic cylinder (44) is installed on the setting frame (43) and located on both sides of the placement block (2); the ejector rod (45) is located at the output end of the telescopic cylinder (44).

3. The bending device for a mounting bracket of a flip-up door according to claim 2, characterized in that, The clamping and limiting mechanism (4) also includes a limiting sliding plate (46) and a ball (47); the limiting sliding plate (46) is disposed at one end of the abutment (41) and is located on one side of the placement block (2); the ball (47) is disposed on the limiting sliding plate (46) and multiple balls (47) are evenly distributed along the upper end of the limiting sliding plate (46); the abutment (41) is provided with a sliding groove (411) for the sliding of the moving mating part (42), and when the moving mating part (42) slides, it can slide stably along the sliding groove (411).

4. The bending device for a mounting bracket of a flip-up door according to claim 1, characterized in that, The clamping and limiting mechanism (4) also includes a positioning rod (48); the positioning rod (48) is located at the top of the abutting part (41), and the moving mating part (42) is in clearance fit with the positioning rod (48).

5. The bending device for a mounting bracket of a flip-up door according to claim 1, characterized in that, The protective mechanism (5) includes a docking block (51), a positioning post (52), and a protective plate (53); the docking block (51) is located on the top of the housing (1) and has a pair; the positioning post (52) is located between the docking blocks (51) and the positioning post (52) is cylindrical; the protective plate (53) is located on the positioning post (52) and the protective plate (53) is fixedly connected to the positioning post (52).

6. The bending device for a mounting bracket of a flip-up door according to claim 5, characterized in that, The protective mechanism (5) also includes a stamping plate (54), a mounting bracket (55), and a hinge rod (56); the stamping plate (54) is located below the stamping and bending machine (3) and above the placement block (2); the mounting bracket (55) is located on top of the stamping plate (54); one end of the hinge rod (56) is rotatably connected to the mounting bracket (55), and the other end of the hinge rod (56) is rotatably connected to the protective plate (53).

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