Bending device

Abstract

The utility model discloses a bending device which comprises a fixed seat, a rotating seat is rotatably connected to the fixed seat, a rotating clamping assembly is connected to the rotating seat, a follow-up pressing assembly capable of abutting against a product is arranged on the fixed seat, and a follow-up driving unit is connected to the fixed seat. The follow-up pressing assembly is connected to the fixing base in a sliding mode, the follow-up pressing assembly is connected with the follow-up driving unit, and the extension direction of the follow-up pressing assembly on the fixing base is the extension direction of a product on the fixing base. According to the bending device provided by the utility model, clamping follow-up is adopted, so that the bending deformation is reduced, the problems of serious bending deformation, instability and uncontrollability of a product are solved, the deformation can be reduced, the tool adjusting time can be shortened, and the production efficiency can be improved.

Description

A bending device Technical Field

[0001] This utility model relates to the field of bending die technology, and in particular to a bending device. Background Technology

[0002] For example, publication number "CN118751805A" discloses a "rebar bending mechanism and automatic rebar bending system," including a base, a bending drive component, and a monitoring component. A bending mold is mounted on the base. The output end of the bending drive component has a drive shaft, on which a bending sleeve is eccentrically mounted. The bending drive component can drive the bending sleeve to move axially along the drive shaft and can also drive the drive shaft to rotate. The monitoring component includes a first monitoring element and two second monitoring elements. The first and / or second monitoring elements are connected to the bending drive component. The first monitoring element is mounted on the drive shaft, and the two second monitoring elements are adjustablely positioned along the rotation path of the first monitoring element. When the first and second monitoring elements are opposite each other, the drive shaft stops rotating. However, in practical applications, due to the significant influence of material springback deformation factors, the bent area is prone to deformation, resulting in poor forming quality and low production efficiency. Summary of the Invention

[0003] In view of the problem of easy deformation at the bending point in the prior art mentioned in the background, this utility model provides a bending device that adopts clamping follow-up to reduce bending deformation, thereby reducing the problem of severe bending deformation, instability and uncontrollability of the product, reducing deformation, reducing tooling adjustment time and improving production efficiency.

[0004] Reduce defective products, improve production efficiency, and thus save costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A bending device includes a fixed base, a rotating base rotatably connected to the fixed base, a rotating clamping assembly connected to the rotating base, a follower pressing assembly capable of abutting a product on the fixed base, a follower driving unit connected to the fixed base, the follower pressing assembly slidably connected to the fixed base, the follower pressing assembly connected to the follower driving unit, and the extension direction of the follower pressing assembly on the fixed base being the extension direction of the product on the fixed base. In this application, the entire device is divided into a fixed base and a rotating base. The fixed base remains in a relatively constant position, while the rotating base can rotate relative to the fixed base. Both the fixed base and the rotating base are equipped with clamping components. The clamping component on the fixed base is a follow-up clamping component, and the clamping component on the rotating base is a rotary clamping component. The rotary clamping component rotates with the rotating base, synchronously clamping the portion of the product located on the rotating base during rotation. The follow-up clamping component clamps the product portion on the fixed base. However, the follow-up clamping component is not continuously fixed in one position on the fixed base; it is connected to a follow-up drive unit. The follow-up drive unit can drive the entire follow-up clamping component to translate. The translation direction of the follow-up clamping component is the same as the extension direction of the product on the fixed base, thereby ensuring that during rotation… When the seat rotates and causes the product to bend, the follower clamping component can move along the product's extension direction and close to the bending side of the product under the drive of the follower drive unit. This avoids severe bending deformation of the product at the bending attachment. Since there is a partial separation between the rotating seat and the fixed seat during the bending process, it will not interfere with the displacement of the follower clamping component. This allows the displacement of the follower clamping component to extend partially beyond the fixed seat, maximizing the shaping effect of the product bending. The follower clamping component is slidably connected to the fixed seat. Specifically, a guide rail or guide groove mechanism can be installed on the fixed seat. Through the sliding connection between the follower clamping component and the guide rail or guide groove, the follower clamping component can slide along the guide rail or guide groove. The follower drive unit includes, but is not limited to, existing drive devices such as cylinders and hydraulic cylinders.

[0007] Preferably, the follow-up clamping assembly includes a sliding plate mold and a sliding plate drive unit. The sliding plate drive unit is connected to the follow-up drive unit, and the sliding plate drive unit drives the sliding plate mold to rise and fall. The follow-up clamping assembly includes a sliding plate mold and a sliding plate drive unit, wherein the sliding plate drive unit includes, but is not limited to, existing drive devices such as cylinders and hydraulic cylinders.

[0008] Preferably, a wrinkle-resistant plate is connected to the fixed base, and the wrinkle-resistant plate is positioned near the rotation center of the rotating base. The product is clamped between the wrinkle-resistant plate and the follow-up clamping assembly. The wrinkle-resistant plate on the fixed base, along with the follow-up clamping assembly, clamps the product between them, ensuring limited protection for the product and resulting in a more uniform bending effect.

[0009] Preferably, the fixing base is provided with a core-pulling unit, and a mandrel is connected to the core-pulling unit, which can penetrate into the product. By providing a core-pulling unit on the fixing base and connecting a mandrel to the core-pulling unit, the mandrel can penetrate into the interior of the product, thereby forming an internal and external clamping effect with the external clamping components, ensuring the bending quality of the product, avoiding local dents or areas of poor bending quality, and ensuring the uniformity of force on the product.

[0010] Preferably, the mandrel comprises several segmented sections, each segment having a connecting groove and a connecting block. Adjacent connecting grooves and blocks are rotatably connected. Each segment includes an inclined surface, and when the connecting groove and the connecting block are connected, an angled gap is formed between the opposing inclined surfaces of adjacent segmented sections. The mandrel is composed of multiple segmented sections, each with a connecting groove and a connecting block. The connecting groove and the connecting block are respectively located at both ends of each segmented section, allowing adjacent segmented sections to be joined together. Furthermore, the end faces of the connecting grooves and connecting blocks on each segmented section are not planar but inclined. This ensures that when adjacent segmented sections are connected, their opposing sides are not completely flush but can rotate and oscillate to a certain extent around the center of the connecting block and the connecting groove. This allows the mandrel to adapt to product bending while maintaining internal support for the product.

[0011] Preferably, a positioning unit is connected to the rotating base. By providing the positioning unit on the rotating base, the initial position of the product can be fixed, thereby ensuring the accuracy of bending.

[0012] Preferably, the positioning unit includes an extension plate connected to a rotating base, a positioning plate on the extension plate, a sliding groove on the extension plate, and a locking bolt connected to the positioning plate that can slide within the sliding groove. Specifically, the positioning unit includes an extension plate and a positioning plate, wherein the extension plate and the rotating base are fixedly connected. The connection method between the extension plate and the rotating base includes, but is not limited to, bolt connection, welding, and integral molding, with bolt connection being preferred to ensure connection stability while improving flexibility. The positioning plate on the extension plate, with its sliding groove, allows the positioning plate to slide relative to the rotating base within the groove via the locking bolt, and is locked in place by the locking bolt. This allows the positioning plate to move relative to the rotating base as needed, thus adapting to the positioning effect of products of different specifications.

[0013] Preferably, the rotary clamping assembly includes a pre-clamping unit, which includes a pre-clamping drive. A movable chuck is slidably connected to the pre-clamping drive, and a stationary chuck is connected to the rotary seat. The pre-clamping unit on the rotary clamping assembly provides initial clamping of the product, quickly helping to position and constrain it. The movable chuck of the pre-clamping unit is driven by the pre-clamping drive, which is typically a hydraulic cylinder, but can be replaced by other similar components such as pneumatic cylinders or electric cylinders. The stationary chuck is fixed to the rotary seat. Through the cooperation of the movable and stationary chucks, initial clamping is performed after the product is positioned, ensuring its stability.

[0014] Preferably, the rotary clamping assembly includes a stabilizing clamping unit, which includes a stabilizing drive component. An upper clamping die is slidably connected to the stabilizing drive component, and a lower clamping die is connected to the rotary seat. The rotary clamping assembly further includes a stabilizing clamping unit, which comprises an upper clamping die and a lower clamping die. This allows for better adaptation to the shape of the product for clamping, improving the clamping quality. The stabilizing drive component is generally a hydraulic cylinder, but it can also be replaced by other similar components, such as a pneumatic cylinder or an electric cylinder.

[0015] Preferably, a disc mold is disposed between the fixed seat and the rotating seat, with the rotation center of the rotating seat coinciding with the center of the disc mold. The disc mold, being disc-shaped, is disposed between the fixed seat and the rotating seat. During the bending process, the bent portion of the product contacts the disc mold, forming an arc-shaped bending structure. Therefore, coinciding the rotation center of the rotating seat with the center of the disc mold ensures the stability and quality of the bending process.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The clamping follow-up is adopted to reduce bending deformation, thereby reducing the problem of severe bending deformation, instability and uncontrollability of the product. It can reduce deformation, reduce tooling adjustment time and improve production efficiency.

[0018] (2) Ensure stable and uniform clamping effect on the product. The mandrel and various clamping components can reduce the occurrence of local depressions and improve the quality and stability of the product during the bending process. Attached Figure Description

[0019] Figure 1 is an isometric view of this utility model.

[0020] Figure 2 is a front view of the present invention in its initial state.

[0021] Figure 3 is a front view of the present invention in its working state.

[0022] Figure 4 is a magnified view of part A in Figure 1.

[0023] Figure 5 is an isometric view of Example 2.

[0024] Figure 6 is a magnified view of part B in Figure 5.

[0025] In the picture:

[0026] 1. Fixed base;

[0027] 2. Rotary seat;

[0028] 3 Rotary clamping assembly, 31 Pre-clamping unit, 311 Pre-clamping drive, 312 Moving chuck, 313 Stationary chuck, 32 Stabilizing clamping unit, 321 Stabilizing drive, 322 Clamping upper die, 323 Clamping lower die;

[0029] 4 Follow-up clamping assembly, 41 Follow-up drive unit, 42 Slide mold, 43 Slide drive unit;

[0030] 5. Anti-wrinkle board;

[0031] 6. Core-pulling unit, 61. Core rod, 62. Segmented section, 621. Connecting circular groove, 622. Connecting circular block, 623. Inclined surface, 624. Angle gap; 7. Positioning unit, 71. Extension plate, 711. Slide groove, 72. Positioning plate, 721. Locking bolt.

[0032] 8-disc mold;

[0033] 9 products. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1:

[0036] As shown in Figure 1, a bending device includes a fixed base 1, a rotating base 2 rotatably connected to the fixed base 1, a rotating clamping assembly 3 connected to the rotating base 2, a follower pressing assembly 4 capable of abutting against a product 9 provided on the fixed base 1, a follower driving unit 41 connected to the fixed base 1, the follower pressing assembly 4 slidably connected to the fixed base 1, the follower pressing assembly 4 connected to the follower driving unit 41, and the extension direction of the follower pressing assembly 4 on the fixed base 1 is the extension direction of the product on the fixed base 1. In this application, the entire device is divided into a fixed base 1 and a rotating base 2. The fixed base 1 remains in a relatively fixed position, while the rotating base 2 can rotate relative to the fixed base 1. Both the fixed base 1 and the rotating base 2 are equipped with clamping components. The clamping component on the fixed base 1 is a follower-type pressing component 4, and the clamping component on the rotating base 2 is a rotating clamping component 3. The rotating clamping component 3 can rotate with the rotating base 2, synchronously clamping the portion of the product 9 located on the rotating base 2 during rotation. The follower-type pressing component 4 clamps the portion of the product 9 on the fixed base 1. However, the follower-type pressing component 4 is not continuously fixed in one position on the fixed base 1; it is connected to a follower-type drive unit 41. The follower-type drive unit 41 can drive the entire follower-type pressing component 4 to translate. The translation direction of the follower-type pressing component 4 is the same as the extension direction of the product 9 on the fixed base 1, thereby... When the rotating seat 2 rotates and causes the product 9 to bend, the follower clamping component 4 can move along the extension direction of the product 9 and close to the bending side of the product 9 under the drive of the follower drive unit 41. This avoids severe bending deformation of the product 9 at the bending attachment. Since there is a partial separation between the rotating seat 2 and the fixed seat 1 during the bending process, it will not interfere with the displacement of the follower clamping component. The displacement of the follower clamping component can extend partially out of the fixed seat 1, maximizing the shaping effect of the bending of the product 9. The follower clamping component 4 is slidably connected to the fixed seat 1. Specifically, a guide rail or guide groove mechanism can be installed on the fixed seat 1. Through the sliding connection between the follower clamping component 4 and the guide rail or guide groove, the follower clamping component 4 can slide along the guide rail or guide groove. The follower drive unit 41 includes, but is not limited to, existing drive devices such as cylinders and hydraulic cylinders.

[0037] As shown in Figures 2 and 3, the follow-up clamping assembly 4 includes a sliding plate mold 42 and a sliding plate drive unit 43. The sliding plate drive unit 43 is connected to the follow-up drive unit 41, and the sliding plate drive unit 43 drives the sliding plate mold 42 to rise and fall. The follow-up clamping assembly 4 includes a sliding plate mold 42 and a sliding plate drive unit 43, wherein the sliding plate drive unit 43 includes, but is not limited to, existing drive devices such as cylinders and hydraulic cylinders.

[0038] As shown in Figures 2 and 3, a wrinkle-resistant plate 5 is connected to the fixed base 1. The wrinkle-resistant plate 5 is positioned near the rotation center of the rotating base 2, and the product is clamped between the wrinkle-resistant plate 5 and the follow-up clamping assembly 4. The wrinkle-resistant plate 5 on the fixed base 1 and the follow-up clamping assembly 4 can clamp the product 9 between them, ensuring the limiting protection of the product 9 and making the bending effect of the product 9 more uniform.

[0039] As shown in Figures 1 and 4, a positioning unit 7 is connected to the rotating base 2. The positioning unit 7 on the rotating base 2 can fix the initial position of the product 9, thereby ensuring the accuracy of bending.

[0040] As shown in Figure 4, the positioning unit 7 includes an extension plate 71 connected to the rotating base 2. A positioning plate 72 is provided on the extension plate 71, and a sliding groove 711 is provided on the extension plate 71. A locking bolt 721, which can slide within the sliding groove 711, is connected to the positioning plate 72. Specifically, the positioning unit includes an extension plate 71 and a positioning plate 72. The extension plate 71 is fixedly connected to the rotating base 2. The connection method between the extension plate 71 and the rotating base 2 includes, but is not limited to, bolt connection, welding, and integral molding. A bolt connection is preferred to ensure connection stability while improving flexibility. The positioning plate 72 is provided on the extension plate 71, and the sliding groove 711 is provided on the extension plate 71. The positioning plate 72 can slide relative to the sliding groove 711 via the locking bolt 721 and is locked by the locking bolt 721, allowing the positioning plate 72 to move relative to the target size of the product 9.

[0041] As shown in Figures 2 and 3, the rotary clamping assembly 3 includes a pre-clamping unit 31, which includes a pre-clamping drive 311. A movable chuck 312 is slidably connected to the pre-clamping drive 311, and a stationary chuck 313 is connected to the rotary base 2. The pre-clamping unit 31 on the rotary clamping assembly 3 allows for initial clamping of the product 9, quickly helping to position and constrain it. The movable chuck 312 of the pre-clamping unit 31 is driven by the pre-clamping drive 311, which is typically a hydraulic cylinder, but can be replaced by other similar components such as a pneumatic cylinder or an electric cylinder. The stationary chuck 313 is fixed to the rotary base 2. Through the cooperation of the movable chuck 312 and the stationary chuck 313, initial clamping is performed after the product 9 is positioned, ensuring the stability of the product 9.

[0042] As shown in Figures 2 and 3, the rotary clamping assembly 3 includes a stabilizing clamping unit 32, which includes a stabilizing drive component 321. A clamping upper die 322 is slidably connected to the stabilizing drive component 321, and a clamping lower die 323 is connected to the rotary base 2. The rotary clamping assembly 3 also includes the stabilizing clamping unit 32, which includes the clamping upper die 322 and the clamping lower die 323. This allows for better clamping of the product 9, improving the clamping quality. The stabilizing drive component 321 is generally a hydraulic cylinder, but it can also be replaced by other similar components, such as a pneumatic cylinder or an electric cylinder.

[0043] As shown in Figure 1, a disc mold 8 is disposed between the fixed base 1 and the rotating base 2, with the rotation center of the rotating base coinciding with the center of the disc mold 8. The disc mold 8 is disc-shaped. During the bending process, the bent portion of the product 9 will contact the disc mold 8, thus forming an arc-shaped bending structure. Therefore, coinciding the rotation center of the rotating base with the center of the disc mold 8 ensures the stability and quality of the bending process.

[0044] Example 2:

[0045] As shown in Figures 5 and 6, a core-pulling unit 6 is provided on the fixing base 1, and a mandrel 61 is connected to the core-pulling unit 6. The mandrel 61 can penetrate into the product. By providing the core-pulling unit 6 on the fixing base 1 and connecting the mandrel 61 to the core-pulling unit 6, the mandrel 61 can penetrate into the interior of the product 9, thereby forming an internal and external clamping effect with the external clamping components, ensuring the bending quality of the product 9, avoiding local dents or areas with poor bending quality, and ensuring the uniformity of force on the product 9.

[0046] As shown in Figures 5 and 6, the mandrel 61 includes several segmented sections 62. Each segmented section 62 is provided with a connecting groove 621 and a connecting block 622. Adjacent connecting grooves 621 and connecting blocks 622 are rotatably connected. Each segmented section 62 includes an inclined surface 623. When the connecting groove 621 and the connecting block 622 are connected, an angled gap 624 can be formed between the opposing inclined surfaces 623 of adjacent segmented sections 62. The mandrel 61 is composed of multiple segmented sections 62, each segmented section 62 is provided with a connecting groove 621 and a connecting block 622. The connecting groove 621 and the connecting block 622 are respectively located at both ends of each segmented section 62, so adjacent segmented sections 62 can be connected through the connecting groove 621 and the connecting block 622. Furthermore, the two end faces of each segment 62, where the connecting groove 621 and the connecting block 622 are set, are not planar structures, but inclined planes 623 structures. This means that when adjacent segments 62 are connected, the opposite sides of the two segments 62 are not completely fitted together, but can rotate and swing to a certain extent around the center of the connecting block 622 and the connecting groove 621. This allows the mandrel 61 to adapt to the bending of the product 9, while ensuring the support effect on the inside of the product 9.

[0047] In addition to the above-described structure, this embodiment also includes a fixed base 1, a rotating base 2 rotatably connected to the fixed base 1, a rotating clamping assembly 3 connected to the rotating base 2, a follower pressing assembly 4 capable of abutting the product 9 on the fixed base 1, a follower drive unit 41 connected to the fixed base 1, and the follower pressing assembly 4 slidably connected to the fixed base 1 and connected to the follower drive unit 41. The extension direction of the follower pressing assembly 4 on the fixed base 1 is the same as the extension direction of the product on the fixed base 1. The follower pressing assembly 4 includes a sliding plate mold 42 and a sliding plate drive unit 43, which is connected to the follower drive unit 41 and drives the sliding plate mold 42 to rise and fall. An anti-wrinkle plate 5 is connected to the fixed base 1, positioned near the rotation center of the rotating base 2, and the product is clamped between the anti-wrinkle plate 5 and the follower pressing assembly 4. A positioning unit 7 is connected to the rotating base 2. The positioning unit 7 includes an extension plate 71 connected to the rotating base 2. A positioning plate 72 is provided on the extension plate 71, and a sliding groove 711 is provided on the extension plate 71. A locking bolt 721, which can slide within the sliding groove 711, is connected to the positioning plate 72. The rotating clamping assembly 3 includes a pre-clamping unit 31, which includes a pre-clamping drive member 311. A movable chuck 312 is slidably connected to the pre-clamping drive member 311, and a stationary chuck 313 is connected to the rotating base 2. The rotating clamping assembly 3 includes a stabilizing clamping unit 32, which includes a stabilizing drive member 321. An upper clamping mold 322 is slidably connected to the stabilizing drive member 321, and a lower clamping mold 323 is connected to the rotating base 2. A disc mold 8 is provided between the fixed base 1 and the rotating base 2, and the rotation center of the rotating base coincides with the center of the disc mold 8.

[0048] The follow-up clamping assembly 4 includes a slide plate mold 42 and a slide plate drive unit 43, wherein the slide plate drive unit 43 includes, but is not limited to, existing drive devices such as cylinders and hydraulic cylinders. An anti-wrinkle plate 5 is provided on the fixed base 1. The anti-wrinkle plate 5 and the follow-up clamping assembly 4 can clamp the product 9 between them, ensuring the limiting protection of the product 9 and making the bending effect of the product 9 more uniform. A positioning unit 7 is provided on the rotating base 2. The positioning unit 7 can fix the initial position of the product 9, thereby ensuring the bending accuracy. Specifically, the positioning unit includes an extension plate 71 and a positioning plate 72. The extension plate 71 is fixedly connected to the rotating base 2. The connection method between the extension plate 71 and the rotating base 2 includes, but is not limited to, bolt connection, welding, and integral molding, wherein bolt connection is preferred to ensure connection stability while improving flexibility. A positioning plate 72 is provided on the extension plate 71, and a sliding groove 711 is provided on the extension plate 71. The positioning plate 72 can be relatively slidably connected in the sliding groove 711 by locking bolts 721 and locked by locking bolts 721, so that the positioning plate 72 can move relatively as needed, thereby adapting to the positioning effect of products 9 of different specifications. A pre-clamping unit 31 is provided on the rotary clamping assembly 3, wherein the pre-clamping unit 31 can perform preliminary clamping on the product 9, thereby quickly helping to position and constrain the product 9. The moving chuck 312 of the pre-clamping unit 31 is driven by a pre-clamping drive 311, which is generally a hydraulic cylinder, but can also be replaced by other similar components, such as a pneumatic cylinder, an electric cylinder, etc.; while the stationary chuck 313 is fixed on the rotary seat 2. Through the cooperation of the moving chuck 312 and the stationary chuck 313, preliminary clamping can be performed after the product 9 is positioned to ensure the stability of the product 9. The rotary clamping assembly 3 also includes a stabilizing clamping unit 32, which includes an upper clamping die 322 and a lower clamping die 323. This unit better adapts to the shape of the product 9 for clamping, improving clamping quality. The stabilizing drive component 321 is generally a hydraulic cylinder, but can be replaced by other similar components, such as pneumatic cylinders or electric cylinders. A disc mold 8 is placed between the fixed base 1 and the rotary base 2. The disc mold 8 is disc-shaped. During bending, the bent portion of the product 9 will contact the disc mold 8, forming an arc-shaped bending structure. Therefore, the rotation center of the rotary base is aligned with the center of the disc mold 8 to ensure bending stability and quality.

Claims

1. A bending device, characterized in that, The device includes a fixed base, a rotating base rotatably connected to the fixed base, a rotating clamping assembly connected to the rotating base, a follower clamping assembly capable of abutting the product on the fixed base, a follower drive unit connected to the fixed base, the follower clamping assembly slidably connected to the fixed base, the follower clamping assembly connected to the follower drive unit, and the extension direction of the follower clamping assembly on the fixed base being the extension direction of the product on the fixed base.

2. A bending device as claimed in claim 1, characterized in that The follow-up pressing assembly includes a skateboard mold and a skateboard drive unit. The skateboard drive unit is connected to the follow-up drive unit, and the skateboard drive unit drives the skateboard mold to rise and fall.

3. A bending device as claimed in claim 1, characterized in that A wrinkle-resistant plate is connected to the fixed base. The wrinkle-resistant plate is located on the side near the rotation center of the rotating base. The product is clamped between the wrinkle-resistant plate and the follow-up clamping assembly.

4. A bending apparatus as claimed in claim 1, wherein The mounting base is equipped with a core-pulling unit, and a core rod is connected to the core-pulling unit. The core rod can be inserted into the product.

5. A bending device as claimed in claim 4, characterized in that The mandrel includes several segments, each segment having a connecting groove and a connecting block. Adjacent connecting grooves and connecting blocks are rotatably connected. Each segment includes an inclined surface. When the connecting groove and the connecting block are connected, an angled gap can be formed between the opposing inclined surfaces of adjacent segments.

6. A bending apparatus as claimed in claim 1, characterized in that A positioning unit is connected to the rotating base.

7. A bending device according to claim 6, characterized in that, The positioning unit includes an extension plate connected to a rotating seat, a positioning plate provided on the extension plate, a sliding groove provided on the extension plate, and a locking bolt connected to the positioning plate that can slide within the sliding groove.

8. A bending device according to any one of claims 1-7, characterized in that, The rotary clamping assembly includes a pre-clamping unit, which includes a pre-clamping drive member. A movable chuck is slidably connected to the pre-clamping drive member, and a stationary chuck is connected to the rotary seat.

9. A bending apparatus according to any one of claims 1-7, characterized in that The rotary clamping assembly includes a stabilizing clamping unit, which includes a stabilizing drive member. An upper clamping die is slidably connected to the stabilizing drive member, and a lower clamping die is connected to the rotary seat.

10. A bending apparatus according to any one of claims 1-7, characterized in that A disc mold is provided between the fixed seat and the rotating seat, and the rotation center of the rotating seat coincides with the center of the disc mold.

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