Lifting structure of stretch bending machine and stretch bending mechanism

Abstract

The utility model provides a lifting structure of a stretch bender and a stretch bending mechanism. The lifting structure comprises a lifting driving device, an upper connecting piece and a lower connecting piece, wherein the lifting driving device is used for lifting a stretching driving device of the stretch bender; one end of the upper connecting piece is connected with a driving rod of the lifting driving device, the other end of the upper connecting piece penetrates through a bracket of the stretch bender to be connected with a stretching driving device of the stretch bender, the upper connecting piece is rotatably connected with the bracket of the stretch bender, and the upper connecting piece is slidably connected with a rotation driving device of the stretch bender; one end of the lower connecting piece is connected with a stretching driving device of the stretch bender, and the other end of the lower connecting piece is rotatably connected with a bracket of the stretch bender; the lifting driving device drives the upper connecting piece to ascend and descend so as to drive the stretching driving device and the lower connecting piece to ascend and descend, and the rotating driving device of the stretch bending machine drives the upper connecting piece to rotate so as to drive the stretching driving device and the lower connecting piece to rotate to achieve stretch bending of the profile. The lifting structure enables the stretch-bending height direction of the section bar to be adjustable, so that the stretch-bending device is suitable for stretch-bending the section bars with various heights positioned on the workbench.

Description

Technical Field

[0001] This utility model relates to the field of bending processing technology, and more specifically, to a lifting structure and bending mechanism for a bending machine. Background Technology

[0002] The existing stretch bending machines on the market are mainly divided into rotary table stretch bending machines and double rotary arm stretch bending machines. Stretch bending machines are easy to operate, produce perfect arc shapes for processed profiles, improve processing accuracy and process consistency, and increase production efficiency. Existing double rotary arm stretch bending machines generally have a stretch bending template, with two rotating arms acting as the stretch bending mechanism, clamping and rotating the ends of the profile, and keeping the profile tightly against the surface of the stretch bending template to limit the bending arc of the profile, thus achieving the stretch bending of the profile.

[0003] However, existing double-arm stretch bending machines have fixed bending mechanisms on both sides in the vertical direction, making their function relatively limited. They are specifically designed for a single type of profile requiring batch bending, and the bending is restricted to a single direction or a specific specification, resulting in a narrow range of applications. In actual use, however, a wide variety of profiles are required, and existing stretch bending machines with fixed bending mechanism heights can no longer simultaneously handle the bending of most profiles.

[0004] In current practice, some methods involve adjusting the height of the bending template and profile using molds to align the profile with the bending mechanisms on both sides of a double-arm bending machine, allowing the bending mechanisms to clamp the profile on both sides. However, this method not only increases the mold opening cost compared to other methods, thus increasing bending processing costs, but it is also cumbersome to operate, makes it difficult to accurately level the profile, and significantly affects the bending accuracy. Furthermore, this method limits bending to a single direction only. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a lifting structure for a bending machine. This lifting structure allows for adjustment of the bending height of the profile, making it suitable for bending profiles at various heights on the worktable. This invention also provides a bending mechanism with strong practicality and versatility.

[0006] In order to achieve the above object, the utility model discloses a lifting structure of a stretch bending machine, characterized in that: comprising the lifting drive device that makes the stretch drive device of stretch bending machine lift, upper connecting piece and lower connecting piece, one end of upper connecting piece is connected with the drive link of lifting drive device, and the other end passes through the bracket of stretch bending machine and is connected with the stretch drive device of stretch bending machine, and upper connecting piece is rotatably connected with the bracket of stretch bending machine, and upper connecting piece is slidably connected with the rotary drive device of stretch bending machine, one end of lower connecting piece is connected with the stretch drive device of stretch bending machine, and the other end is rotatably connected with the bracket of stretch bending machine, when working, lifting drive device drives upper connecting piece to lift to drive the stretch drive device and lower connecting piece to lift, and the rotary drive device of stretch bending machine drives upper connecting piece to rotate to drive the stretch drive device and lower connecting piece to rotate, and the profile stretch bending is realized.

[0007] In the above scheme, the utility model can drive upper connecting piece through lifting drive device to drive the stretch drive device of stretch bending machine to lift, the stretch drive device is provided with the chuck of profile clamping, so that the height of stretch drive device can be adjusted to adjust the height of chuck, so that the profile stretch bending height direction can be adjusted, the problem of complicated and high cost of die height adjustment is solved, and the convenience of adjusting to the same height as the profile by only controlling the up-down movement of stretch drive device can be realized, and it can be suitable for various height profiles positioned on the workbench for stretch bending.

[0008] In addition, when the stretch drive device is lifted and the profile is stretched and bent, the rotary drive device of the stretch bending machine drives the upper connecting piece to rotate, which can drive the stretch drive device and the lower connecting piece to rotate, and the stretch bending process of the profile is realized.

[0009] The drive rod of the lifting drive device is provided with a magnetic ring, the lifting drive device is provided with a magnetostrictive sensor, and the magnetostrictive sensor detects the position of the drive rod through the magnetic ring. The controller receives the position information of the drive rod to control the accurate work of the lifting drive device.

[0010] The sliding connection between the upper connecting piece and the rotary drive device of the stretch bending machine refers to that the upper connecting piece is provided with a sliding groove, and the upper connecting piece is slidably connected with the driving end of the rotary drive device through the sliding groove. The utility model is provided with the sliding groove in the upper connecting piece, which can avoid affecting the rotary drive device of the stretch bending machine during the lifting of the upper connecting piece

[0011] A stretch bending mechanism comprises the lifting structure of the stretch bending machine, and further comprises a bracket, a stretch drive device for clamping a profile and a rotary drive device; the stretch drive device is located inside the bracket, the upper connecting piece passes through the bracket and is connected with the upper part of the stretch drive device, and the upper connecting piece is rotatably connected with the bracket; the lower connecting piece is connected with the lower part of the stretch drive device, and the lower connecting piece is rotatably connected with the bracket; and the rotary drive device is arranged on the bracket and slidably connected with the upper connecting piece.

[0012] In the above scheme, the stretch-bending mechanism has high practicability and high versatility, and the height of the stretching driving device can be adjusted according to the stretch-bending requirement or the profile position at various heights of the workbench.

[0013] The rotatable connection between the upper connecting piece and the bracket refers to that the bracket is provided with a bearing seat, and the upper connecting piece is rotatably connected with the bracket through the bearing seat.

[0014] The rotatable connection between the lower connecting piece and the bracket refers to that the bracket is provided with a bearing flange, and the lower connecting piece is rotatably connected with the bracket through the bearing flange.

[0015] The rotating driving device comprises a rotating driving component and a swing arm, the swing arm is sleeved with the upper connecting piece, the rotating driving component is arranged on the bracket and connected with the swing arm, and the swing arm is driven to rotate to drive the upper connecting piece to rotate.

[0016] The rotating driving device is arranged on the bracket and slidably connected with the upper connecting piece, the rotating driving device further comprises a rotating shaft flat key, the rotating shaft flat key is arranged on the swing arm, the upper connecting piece is provided with a sliding groove, and the swing arm is slidably connected with the sliding groove of the upper connecting piece through the rotating shaft flat key. When the upper connecting piece is lifted, the upper connecting piece is lifted and lowered through the sliding groove and the rotating shaft flat key, and when stretch-bending is required after lifting, the rotating driving component drives the swing arm to rotate to drive the upper connecting piece to rotate.

[0017] The stretching driving device comprises a stretching driving component, a frame and a chuck assembly for clamping the profile, the upper connecting piece is connected with the upper part of the stretching driving component, and the lower connecting piece is connected with the lower part of the stretching driving component, the stretching driving component is arranged in the frame, the driving end of the stretching driving component is connected with the frame and the stretching driving component is slidably connected with the frame, and the chuck assembly is connected with the frame.

[0018] The chuck assembly comprises a chuck and a rotating disc for driving the chuck to rotate, the rotating disc is connected with the frame and connected with the chuck.

[0019] The frame of the utility model is synchronously lifted with the stretching driving component to adjust the chuck assembly and the profile to the same height, and the chuck is matched and clamped with the profile through the rotating disc. When stretch-bending is required after lifting, the stretching driving component drives the chuck assembly connected with the frame to perform stretch-bending on the profile. In addition, the height direction of the profile can also be stretch-bent by controlling the lifting of the stretching driving component.

[0020] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0021] 1. The lifting structure of the stretch-bending machine can adjust the stretch-bending height direction of the profile, so that the stretch-bending machine can be applied to the profiles positioned at various heights of the workbench.

[0022] 2. The bending mechanism of this utility model is highly practical and versatile. Attached Figure Description

[0023] Fig. 1 This is a schematic diagram of the bending mechanism of this utility model;

[0024] Fig. 2 This is an internal schematic diagram of the bending mechanism of this utility model;

[0025] Fig. 3 This is a schematic diagram of the connection between the upper connecting member and the swing arm in the bending mechanism of this utility model;

[0026] Fig. 4 This is a schematic diagram of the connection between the upper connecting piece, the swing arm, and the rotating shaft key in the bending mechanism of this utility model;

[0027] Among them, 1 is the bracket, 2 is the upper connector, 2.1 is the sliding groove, 3 is the lower connector, 4 is the lifting drive device, 4.1 is the drive rod, 5 is the magnetic ring, 6 is the magnetostrictive sensor, 7 is the bearing seat, 8 is the bearing flange, 9 is the rotation drive component, 10 is the swing arm, 11 is the rotating shaft key, 12 is the tension drive component, 13 is the frame, 14 is the chuck, 15 is the turntable, and 16 is the linear guide pair. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] In this embodiment, both the upper and lower connectors are cylindrical lugs.

[0031] like Figs. 1 to 4 As shown, the bending mechanism of this utility model includes a lifting structure, a bracket 1, a stretching drive device for clamping the profile, and a rotation drive device. The stretching drive device is located inside the bracket 1. The lifting structure includes a lifting drive device 4 for raising and lowering the stretching drive device, an upper connecting member 2, and a lower connecting member 3. One end of the upper connecting member 2 is connected to the drive rod 4.1 of the lifting drive device 4, and the other end passes through the bracket 1 and connects to the upper part of the stretching drive device. The upper connecting member 2 is rotatably connected to the bracket 1. One end of the lower connecting member 3 is connected to the lower part of the stretching drive device, and the other end is rotatably connected to the bracket 1. The rotation drive device is mounted on the bracket 1 and slidably connected to the upper connecting member 2. During operation, the lifting drive device 4 drives the upper connecting member 2 to rise and fall, thereby raising and lowering the stretching drive device and the lower connecting member 3. The rotation drive device drives the upper connecting member 2 to rotate, thereby rotating the stretching drive device and the lower connecting member 3, thus achieving profile bending.

[0032] Specifically, the driving rod 4.1 of the lifting driving device 4 is provided with a magnetic ring 5, the lifting driving device 4 is provided with a magnetostrictive sensor 6, and the magnetostrictive sensor 6 detects the position of the driving rod through the magnetic ring 5. In addition, the bracket 1 is provided with a bearing seat 7 and a bearing flange 8, the upper connecting piece 2 is rotatably connected with the bracket 1 through the bearing seat 7, and the lower connecting piece 3 is rotatably connected with the bracket 1 through the bearing flange 8.

[0033] The rotating driving device of the utility model includes rotating driving part 9 and swing arm 10, wherein, swing arm 10 is sleeved on upper connecting piece 2, rotating driving part 9 is arranged on bracket 1 and is connected with swing arm 10, realizes the rotation of driving swing arm 10 to drive the rotation of upper connecting piece 2. The rotating driving device further includes pivot key 11, pivot key 11 is arranged on swing arm 10, upper connecting piece 2 is provided with sliding groove 2.1, and swing arm 10 is slidably connected with the sliding groove 2.1 of upper connecting piece 2 through pivot key 11. When the utility model's upper connecting piece 2 is lifted, it is lifted through the sliding of sliding groove 2.1 and pivot key 11, when it needs to be pulled and bent after lifting, rotating driving part 9 drives swing arm 10 to rotate to drive the rotation of upper connecting piece 2.

[0034] The stretching driving device of the utility model includes stretching driving part 12, frame 13, chuck 14 for clamping sectional material and rotating disc 15 for driving chuck 14 to rotate, wherein, upper connecting piece 2 is connected with the upper part of stretching driving part 12, lower connecting piece 3 is connected with the lower part of stretching driving part 12, stretching driving part 12 is placed in frame 13, the driving end of stretching driving part 12 is connected with frame 13, and stretching driving part 12 is slidably connected with frame 13 through linear guide rail pair 16, and the rotating disc 15 is connected with frame 13 and is connected with chuck 14.

[0035] The frame 13 of the utility model is synchronously lifted with stretching driving part 12 to adjust the same height of chuck assembly and sectional material, and chuck 14 is matched and clamped with sectional material through rotating disc 15. When it needs to be pulled and bent after lifting, stretching driving part 12 drives the chuck assembly connected with frame 13 to sectional material for pull bending. In addition, the height direction of sectional material can also be processed by controlling the lifting of stretching driving part 12.

[0036] Embodiment two

[0037] The lifting structure of the stretch-bending machine comprises a lifting driving device for lifting the stretching driving device of the stretch-bending machine, an upper connecting piece and a lower connecting piece.

[0038] The above embodiment is a preferred embodiment of the present application, but the embodiments of the present application are not limited by the above embodiment, and any change, modification, replacement, combination, simplification, which does not deviate from the spirit and principle of the present application, should be an equivalent replacement mode, and all are included in the protection scope of the present application.

Claims

1. A lifting structure of a stretch bender, characterized by: The lifting driving device for lifting the stretching driving device of the stretch-drawing machine, the upper connecting piece and the lower connecting piece; one end of the upper connecting piece is connected with the driving rod of the lifting driving device, the other end passes through the bracket of the stretch-drawing machine and is connected with the stretching driving device of the stretch-drawing machine, the upper connecting piece is rotatably connected with the bracket of the stretch-drawing machine, and the upper connecting piece is slidably connected with the rotating driving device of the stretch-drawing machine; one end of the lower connecting piece is connected with the stretching driving device of the stretch-drawing machine, and the other end is rotatably connected with the bracket of the stretch-drawing machine; in operation, the lifting driving device drives the upper connecting piece to lift to drive the stretching driving device and the lower connecting piece to lift, and the rotating driving device of the stretch-drawing machine drives the upper connecting piece to rotate to drive the stretching driving device and the lower connecting piece to rotate, so that the profile stretch-drawing is realized.

2. The lifting structure of a stretch-leveller according to claim 1, characterised in that: The driving rod of the lifting driving device is provided with a magnetic ring, and the lifting driving device is provided with a magnetostrictive sensor, and the magnetostrictive sensor detects the position of the driving rod through the magnetic ring.

3. The lifting structure of a stretch-leveller according to claim 1, characterised in that: The upper connecting piece is slidably connected with the rotating driving device of the stretch-drawing machine, that is, the upper connecting piece is provided with a sliding groove, and the upper connecting piece is slidably connected with the driving end of the rotating driving device through the sliding groove.

4. A stretch-bending mechanism characterized by: The lifting structure of the stretch-drawing machine comprises the lifting structure of any one of claims 1 to 3, a bracket, a stretching driving device for clamping a profile and a rotating driving device; the stretching driving device is located in the interior of the bracket, the upper connecting piece passes through the bracket and is connected with the upper part of the stretching driving device, and the upper connecting piece is rotatably connected with the bracket; the lower connecting piece is connected with the lower part of the stretching driving device, and the lower connecting piece is rotatably connected with the bracket; and the rotating driving device is arranged on the bracket and is slidably connected with the upper connecting piece.

5. The stretch-bending mechanism of claim 4, wherein: The upper connecting piece is rotatably connected with the bracket, that is, the bracket is provided with a bearing seat, and the upper connecting piece is rotatably connected with the bracket through the bearing seat.

6. The stretch-bending mechanism of claim 4, wherein: The lower connecting piece is rotatably connected with the bracket, that is, the bracket is provided with a bearing flange, and the lower connecting piece is rotatably connected with the bracket through the bearing flange.

7. The stretch-bending mechanism of claim 4, wherein: The rotating driving device comprises a rotating driving component and a swing arm; the swing arm is sleeved on the upper connecting piece; the rotating driving component is arranged on the bracket and is connected with the swing arm, so as to drive the swing arm to rotate and drive the upper connecting piece to rotate.

8. The stretch-bending mechanism of claim 7, wherein: The rotating driving device is arranged on the bracket and is slidably connected with the upper connecting piece, that is, the rotating driving device further comprises a rotating shaft flat key, the rotating shaft flat key is arranged on the swing arm, the upper connecting piece is provided with a sliding groove, and the swing arm is slidably connected with the sliding groove of the upper connecting piece through the rotating shaft flat key.

9. The stretch-bending mechanism of claim 4, wherein: The stretching driving device comprises a stretching driving component, a frame and a chuck assembly for clamping a profile; the upper connecting piece is connected with the upper part of the stretching driving component, and the lower connecting piece is connected with the lower part of the stretching driving component; the stretching driving component is arranged in the frame, the driving end of the stretching driving component is connected with the frame, and the stretching driving component is slidably connected with the frame; and the chuck assembly is connected with the frame.

10. The stretch-bending mechanism of claim 9, wherein: The chuck assembly comprises a chuck and a rotating disc for driving the chuck to rotate; the rotating disc is connected with the frame and is connected with the chuck.

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