Self-adaptive copper bar bending equipment and bending method

Abstract

The invention belongs to the technical field of copper bar machining, and provides a self-adaptive copper bar bending device and method.The device comprises a mounting module, a chamfering module with a clamping space, a bending module and a driving assembly, and the chamfering module is movably mounted on the mounting module; the driving assembly is used for sequentially driving the mounting module to rotate and driving the chamfering module to rotate so as to switch the chamfering size of the chamfering module towards the bending direction of the copper bar; and the chamfering module is driven to do lifting motion relative to the mounting module to change the size of the clamping space so as to clamp and position the copper bar, and the bending module is driven to do rotating motion so as to bend the copper bar. According to the bending equipment, the chamfering size of the copper bar can be automatically adjusted according to the thickness of the copper bar, so that self-adaption to the copper bar is achieved, and accurate bending of the copper bar can be achieved under the cooperation action of the mounting module, the chamfering module and the bending module.

Description

Technical Field

[0001] This application relates to the technical field of copper bar processing, and particularly relates to an adaptive copper bar bending device and a bending method. Background Art

[0002] A copper bar is a long conductor made of copper material with a rectangular or chamfered (rounded) rectangular cross-section (now generally rounded copper bars are used to avoid tip discharge), and it plays the role of transporting current and connecting electrical equipment in a circuit.

[0003] Currently, the production process of copper bars includes material selection, simulation, blanking, stripping, punching, tin plating, and bending, etc. Among them, the copper bar bending process often requires the use of bending equipment. The types of bending equipment include manual hydraulic bending machines, electric hydraulic bending machines, numerical control busbar processing machines, and manual flat iron bending machines, etc. Taking the hydraulic bending machine as an example, it bends the copper bar through a hydraulic rod, with a large bending gap and low bending accuracy. Moreover, when bending copper bars of different thicknesses, manual chamfer replacement is required, resulting in low production efficiency.

[0004] In response to the above problems, those skilled in the art have continuously optimized the structure of the bending equipment. For example, the patent with the publication number CN217412005U discloses a bending tooling for a copper bar device, which includes a copper bar linear transmission mechanism, a copper bar clamping device, and a copper bar bending die sequentially arranged along the copper bar transmission direction on the workbench. The copper bar bending die includes a bending die head vertically slidably arranged on the workbench, a hollow rotating platform for driving the bending die head to rotate, and a lifting platform installed on the workbench and driving the hollow rotating platform to move up and down. A through groove for clamping the copper bar is arranged on the bending die head. This solution can achieve a fully automated process of transporting, bending, and automatically demolding the copper bar. The above solution can achieve accurate positioning of the copper bar, but it clamps the copper bar to be bent through a clamping plate. During the bending process, if the force exerted by the bending die head on the copper bar is unevenly distributed vertically, it may cause the bent copper bar to deflect, affecting the bending accuracy. Therefore, the above solution cannot achieve the optimization of the bending accuracy of the copper bar.

[0005] For another example, a patent application document with the publication number CN117428048A discloses a copper bar bending tooling, a bending device and a bending method thereof. The bending tooling includes clamping blocks, two of which are provided and arranged opposite to each other for clamping the copper bar to be bent, and a forming surface is provided at one end of at least one of the clamping blocks; a bending die head is arranged on one side of the two clamping blocks, and the bending die head can be driven by a first linear module to move towards the forming surface to bend the copper bar to be bent; a pressing block is arranged on the side of the two clamping blocks away from the bending die head, and the pressing block is movably arranged at the bottom end of a pressing plate through a buffer member, and the pressing block can press one end of the copper bar to be bent between the clamping blocks. In the technical solution of this application, the copper bar to be bent is clamped by the clamping blocks on the one hand, and on the other hand, the pressing block is used to press it against the workbench, ensuring its stability during the bending process and avoiding poor bending accuracy caused by the offset of the copper bar due to the action of the bending die head. The above solution adjusts the distance between the clamping plates according to the thickness of the copper bar, and a second positioning plate is arranged on the clamping plate, so that when the clamping plate is adjusted, the clamping blocks and the sliding rails are synchronously adjusted by the second positioning plate to adjust the clamping thickness between the clamping blocks. However, the above solution makes the equipment structure complex, and the installation accuracy and the errors during the use process both affect the final bending accuracy of the copper bar. Summary of the Invention

[0006] In view of the above-mentioned disadvantages of the prior art, the present invention provides an adaptive copper bar bending device and a bending method, which can automatically and accurately bend copper bars of different thicknesses.

[0007] To achieve the above object and related objects, the present invention adopts the following technical solutions:

[0008] In a first aspect of the present invention, an adaptive copper bar bending device is provided, including an installation module, a chamfering module with a clamping space, a bending module and a driving component. The chamfering module is movably installed on the installation module. The driving component is used to sequentially drive the installation module to perform a rotational movement and drive the chamfering module to rotate to switch the chamfering size of the chamfering module facing the copper bar bending direction, drive the chamfering module to perform a lifting movement relative to the installation module to change the size of the clamping space for clamping and positioning the copper bar, and drive the bending module to perform a rotational movement to bend the copper bar.

[0009] According to the above technical means, in the present invention, the installation module makes a rotational movement and drives the chamfering module to rotate so as to switch the chamfering size of the chamfering module facing the bending direction of the copper bar, so that the chamfering size in contact with the copper bar during the bending of the copper bar matches the thickness of the copper bar, thereby effectively avoiding cracks at the bent part of the copper bar, ensuring the integrity and service life of the copper bar; and in the present invention, there is no need for manual replacement of the chamfer. The rotation of the chamfering module makes the chamfering size adapt to the thickness of the copper bar automatically, reducing the stress concentration at the bent part of the copper bar and reducing the deformation risk of the copper bar during subsequent bending, ensuring that the bent copper bar is flat and without distortion; in the present invention, the chamfering module moves up and down relative to the installation module to change the size of the clamping space so as to clamp and position the copper bar, ensuring the position stability of the copper bar during subsequent bending, reducing errors caused by human factors or equipment vibration, thereby improving the precision and shape consistency of the bent copper bar; under the linkage of the installation module, the chamfering module and the bending module in the present invention, the bending of the copper bar can be quickly completed by relying on the driving component, and the bending precision of the copper bar is high, which is applicable to copper bars of different thicknesses.

[0010] Further, the chamfering module includes two oppositely arranged inclined surface clamping blocks, and chamfers of different sizes are arranged on both lateral sides of the two inclined surface clamping blocks.

[0011] According to the above technical means, a plurality of chamfers of different sizes are arranged on the chamfering module of the present invention. When it rotates, the size of the chamfer can adapt to the thickness of the current copper bar automatically.

[0012] Further, the installation module includes a V-shaped installation block. The inclined surface clamping block is movably installed in the installation block through its inclined surface, and there is a clamping space between the two inclined surface clamping blocks.

[0013] According to the above technical means, in the present invention, by controlling the lifting movement of the two inclined surface clamping blocks relative to the installation block, the distance between the inclined surface clamping blocks can be accurately controlled, thereby changing the size of the clamping space; when the two inclined surface clamping blocks move upward, the distance between them becomes larger, facilitating the smooth entry of the copper bar into the chamfering module; when the two inclined surface clamping blocks move downward, the distance between them becomes smaller to firmly clamp the copper bar, realizing the precise positioning of the copper bar in the bending equipment; and the cooperation of the installation module and the chamfering module in the present invention can ensure that copper bars of different thicknesses can be smoothly clamped.

[0014] Further, the bending module includes two bending blocks arranged around the installation module.

[0015] Further, the driving component includes a first driving member connected to the installation module and used for driving the installation module to rotate.

[0016] Further, the driving component further includes a second driving member connected to the chamfering module and used for driving the chamfering module to move up and down relative to the installation module.

[0017] Further, the driving assembly further includes a third driving member connected to the bending module and used for driving the bending module to rotate.

[0018] Further, the bending device further includes a controller electrically connected to the driving assembly.

[0019] The second aspect of the present invention provides a bending method for bending copper bars, including the following steps:

[0020] Based on the control parameters, control the installation module to perform a rotational movement and drive the chamfering module to rotate to switch the chamfer size of the chamfering module facing the copper bar bending direction;

[0021] Control the chamfering module to perform a lifting movement relative to the installation module to change the size of the clamping space for clamping and positioning the copper bar;

[0022] Control the bending module to perform a rotational movement to bend the copper bar.

[0023] Further, the control parameters include the copper bar thickness parameter, the copper bar bending parameter, the chamfer parameter, and the copper bar bending times parameter.

[0024] The beneficial technical effects of the present invention are as follows:

[0025] The bending device of the present invention can automatically adjust the chamfer size according to the thickness of the copper bar to achieve self - adaptation to the copper bar, and can achieve precise bending of the copper bar under the combined action of the installation module, the chamfering module, and the bending module;

[0026] The bending method of the present invention can automatically and precisely bend copper bars with different thicknesses, and has simple operation and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0028] Figure 1 is a schematic structural diagram of an adaptive copper bar bending device shown in an embodiment of the present application;

[0029] Figure 2 is a sectional view of an adaptive copper bar bending device shown in an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of the chamfering module of the present application;

[0031] Figure 4Schematic diagram of the installation block structure of this application;

[0032] Figure 5 Application scenario diagram of the adaptive copper bar bending equipment of this application.

[0033] Reference numerals

[0034] 1: Inclined surface clamping block; 2: Chamfer; 3: Installation block; 4: Bending block; 5: Bending knife; 6: First mounting seat; 7: Second mounting seat; 8: Boss; 9: Round platform; 10: Third driving member; 11: First driving member; 12: Second driving member; 13: Copper bar. Detailed implementation manners

[0035] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should be understood that certain features of the present invention (described in the context of separate embodiments for clarity) can also be provided in a single embodiment in combination. Conversely, multiple features of the present invention (described in the context of a single embodiment for brevity) can also be provided separately or in any suitable combination or, when appropriate, in any other described embodiment of the present invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The following further illustrates the present invention through specific specific examples, but it should be noted that the specific process conditions and results described in the embodiments of the present invention are only used to illustrate the present invention and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

[0036] The present invention provides an adaptive copper bar bending equipment, including an installation module, a chamfering module with a clamping space, a bending module and a driving component. The chamfering module is movably installed on the installation module. The driving component is used to sequentially drive the installation module to perform a rotational movement and drive the chamfering module to rotate to switch the chamfer size of the chamfering module facing the copper bar bending direction, drive the chamfering module to perform a lifting movement relative to the installation module to change the size of the clamping space to clamp and position the copper bar, and drive the bending module to perform a rotational movement to bend the copper bar.

[0037] Furthermore, as Figure 1 、 Figure 3 and Figure 4As shown, the chamfering module of the present application includes two oppositely arranged inclined surface clamping blocks 1, and chamfers 2 with different sizes are provided on both lateral sides of the two inclined surface clamping blocks 1. Further, the inclined surface clamping block 1 of the present application is an inclined plate with a certain thickness. The lateral sides of the inclined plate extend towards the inclined surface direction to form baffles with a certain thickness, and the connection between the outer surface of the baffle and the inclined surface is a chamfer 2 with different sizes. The inner surface of the baffle near the inclined surface is recessed inward to form an installation groove with the inclined surface. Specifically, the chamfer size of the present application can be set according to the thickness parameter of the copper bar in the factory and the bending requirements of the copper bar. For example, when the chamfer size is 3 mm, it is applicable to thinner copper bars, such as copper bars with a thickness of 5 mm; when the chamfer size is 5 mm, it is applicable to copper bars with medium thickness, such as copper bars with a thickness of 10 mm; when the chamfer size is 8 mm, it is applicable to thicker copper bars, such as copper bars with a thickness of 12 mm, etc. The size setting of the chamfer 2 of the present application is affected by the bending radius and bending angle of the copper bar. Therefore, before actually bending the copper bar for production, it is necessary to first determine the copper bar production parameters, and then set the sizes of different chamfers 2 of the chamfering module based on the copper bar production parameters.

[0038] Further, the surface of the inclined surface clamping block 1 facing away from the inclined surface is a horizontal surface, which is used to contact and firmly clamp the copper bar 13 during the production process to position the position of the copper bar 13 in the equipment. Therefore, to improve its clamping stability, the above-mentioned horizontal surface should have a certain friction force to prevent the copper bar 13 from shifting.

[0039] Further, the installation module includes a V-shaped installation block 3. The inclined surface clamping block 1 is movably installed in the installation block 3 through its inclined surface, and there is a clamping space between the two inclined surface clamping blocks 1. Further, the inner side of the installation block 3 of the present application has a trapezoid matching the installation groove of the inclined surface clamping block 1. The chamfering module is movably installed in the installation module based on the cooperation of the trapezoid and the installation groove, and the friction coefficient between the inclined surface of the inclined surface clamping block 1 and the inclined surface of the installation block 3 is small to ensure that the chamfering module can smoothly move up and down relative to the installation module.

[0040] Further, as Figure 1 and Figure 2As shown in the figure, the driving component of the present application includes a second driving member 12 connected to the chamfering module and used to drive the chamfering module to move up and down relative to the mounting module. The second driving member 12 of the present application can be various types of electric lifting rods such as stainless steel lifting rods, aluminum alloy lifting rods, cast iron lifting rods, circular lifting rods, and square lifting rods. The electric lifting rod can be connected to the bottoms of the two inclined surface clamping blocks 1. When the electric lifting rod operates, the electric lifting rod drives the two inclined surface clamping blocks 1 to move up and down synchronously relative to the mounting block 3, thereby precisely controlling the distance between the inclined surface clamping blocks 1, and further changing the size of the clamping space; when the two inclined surface clamping blocks 1 move upward, the distance between them becomes larger, facilitating the smooth entry of the copper row 13 into the chamfering module; when the two inclined surface clamping blocks 1 move downward, the distance between them becomes smaller to firmly clamp the copper row 13, realizing the precise positioning of the copper row 13 in the bending equipment. The present application changes the size of the clamping space by the up and down movement of the chamfering module relative to the mounting module to clamp and position the copper row, ensuring the stable position of the copper row during the subsequent bending process, reducing errors caused by human factors or equipment vibration, thereby improving the accuracy and shape consistency of the copper row after bending; and the cooperation of the mounting module and the chamfering module of the present application can ensure that copper rows of different thicknesses can be smoothly clamped.

[0041] Furthermore, the driving component of the present application includes a first driving member 11 connected to the mounting module and used to drive the mounting module to rotate. The first driving member 11 of the present application can be a stepper motor driver, a servo motor driver, and a gear drive, etc. The driver drives the mounting block 3 to perform a rotational movement and drives the inclined surface clamping block 1 to rotate to switch the chamfer size of the inclined surface clamping block 1 facing the copper row bending direction, so that the chamfer size in contact with the copper row 13 during bending matches the thickness of the copper row, effectively avoiding the generation of cracks at the bent part of the copper row, ensuring the integrity and service life of the copper row 13; and the present application does not require manual replacement of the chamfer. By rotating the chamfering module, the chamfer size adapts to the thickness of the copper row, reducing the stress concentration at the bent part of the copper row, reducing the deformation risk of the copper row during the subsequent bending process, and ensuring that the bent copper row is flat and not distorted.

[0042] Furthermore, as Figure 1 and Figure 2 shown, the bending equipment of the present application further includes a first mounting seat 6 and a second mounting seat 7. A plurality of support columns are fixedly connected to the second mounting seat 7, and the fixing methods include but are not limited to screw connection. The second mounting seat 7 supports the first mounting seat 6 through a plurality of support columns and forms an accommodating space with the first mounting seat 6. Furthermore, the shapes and materials of the first mounting seat 6 and the second mounting seat 7 of the present application can be set according to actual needs. For example, the materials can both be metal plates and wooden boards with load-bearing capacity, and their shapes can be rectangular or circular, etc. The plurality of support columns of the present application connect the first mounting seat 6 and the second mounting seat 7 together based on the mechanical principle and the principle of distributed force.

[0043] Furthermore, the bending device of the present application further includes a frustum 9 and a boss 8. The frustum 9 is installed in the accommodation space of the second mounting seat 7, and the boss 8 is installed on the first mounting seat 6. The central axes of the frustum 9 and the boss 8 coincide. And a first mounting hole is provided on the boss 8, a second mounting hole is provided on the first mounting seat 6, a third mounting hole is provided on the frustum 9, and a fourth mounting hole is provided on the second mounting seat 7. An installation base column is movably installed on the frustum 9. Specifically, the mounting block 3 of the present application is installed on the boss 8 and located at the first mounting hole. The installation base column sequentially passes through the third mounting hole, the second mounting hole and the first mounting hole and is connected to the bottom of the mounting block 3. The installation base column and the mounting block 3 together form the installation module of the present application.

[0044] Furthermore, a through hole is axially provided inside the installation base column of the present application. The second driving member 12 can sequentially pass through the fourth mounting hole, the third mounting hole and the through hole and be connected to the chamfering module in the mounting block 3. The first driving member 11 is installed on the outer peripheral surface of the frustum 9 and is used to drive the installation module to perform a rotational movement in the second mounting hole and the first mounting hole. To ensure that when the first driving member 11 drives the installation module to perform a rotational movement, it does not affect the relative position between the installation module and the chamfering module, there is a gap between the second driving member 12 and the inner wall of the through hole. Specifically, a card slot for the second driving member 12 to extend into and be connected together is provided at the bottom of the inclined surface clamping block 1 of the present application. When it is necessary to adjust the clamping space, the second driving member 12 is started, and its lifting rod extends into the card slot of the inclined surface clamping block 1 along the through hole to drive the inclined surface clamping block 1 to perform a lifting movement.

[0045] Furthermore, the boss 8 of the present application includes a rotating table and a base table. The rotating table and the base table are installed up and down and the rotating table can rotate relative to the base table. The bending module includes two bending blocks 4 arranged around the installation module. The two bending blocks 4 are installed on the rotating table, and a bending knife 5 is fixedly installed on one side of the two bending blocks 4 facing the bending direction of the copper row. The bending knife 5 is a key component for the copper row bending device to realize the bending function. When the bending module performs a rotational movement, the bending knife 5 can apply pressure to the copper row 13, causing the copper row 13 to undergo plastic deformation, thereby completing the bending operation. Since different types of bending knives 5 are suitable for bending copper rows of different shapes, for example, straight knives are suitable for bending situations where only one bend is made and no avoidance of positions needs to be considered, therefore, the present application selects a bending knife 5 adapted to the shape of the copper row produced in actual production and installs it on the bending block 4. The present application realizes bending of the copper row at different angles by adjusting the rotational movement parameters of the bending module and the contact manner between the bending knife 5 and the copper row 13, so that the copper row can be processed into various required shapes.

[0046] Furthermore, the driving assembly further includes a third driving member 10 connected to the bending module and used to drive the bending module to rotate. The third driving member 10 in the present application can be a stepper motor driver, a servo motor driver, a gear drive, or other drivers. The third driving member 10 in the present application is installed on the outer peripheral surface of the base to control the rotary platform to perform a circular motion and drive the bending module to perform a rotational motion.

[0047] Furthermore, the bending device in the present application further includes a controller electrically connected to the driving assembly. The controller can be a PLC controller or the like to achieve a numerical control function.

[0048] Furthermore, as Figure 5 shown, the bending device in the present application can be installed on a bending copper bar production line, and the produced bent copper bars can meet the installation and usage requirements of different electrical equipment.

[0049] Furthermore, the bending device in the present application is not limited to bending copper bars. It can also bend thin plates of metal materials such as carbon steel, stainless steel, and aluminum; plastic sheets such as ABS plastic, polycarbonate, and polyvinyl chloride; and composite materials such as fiber-reinforced plastics and carbon fiber composite materials, as long as the appropriate chamfer 2 and bending knife 5 are switched.

[0050] The present invention also provides a bending method for bending copper bars, including the following steps:

[0051] Based on the control parameters, control the installation module to perform a rotational motion and drive the chamfering module to rotate to switch the chamfer size of the chamfering module facing the copper bar bending direction;

[0052] Control the chamfering module to perform a lifting motion relative to the installation module to change the size of the clamping space to clamp and position the copper bar;

[0053] Control the bending module to perform a rotational motion to bend the copper bar.

[0054] Further, the control parameters include copper bar thickness parameters, copper bar bending parameters, chamfer parameters, copper bar bending times parameters, installation module motion parameters, second driving member motion parameters, and bending module motion parameters, etc., and can also include any other parameters that affect the bending accuracy of the copper bar.

[0055] Further, the bending method in the present application is used for automatic control of the adaptive copper bar bending device. Before controlling the bending device in the present application, a control parameter database is first established, and the content of this database specifically depends on the tasks that the bending device needs to execute; then a connection with the bending device is established through network connection, serial port connection, or other appropriate means, and configuration and preparation work are carried out on the bending device, such as selecting specific chamfer parameters and copper bar bending parameters corresponding to the current copper bar; a control command is issued using a controller such as a PLC controller.

[0056] Further, when the bending device receives a control command, it performs an automated bending operation as follows:

[0057] Start the first driving member 11 to drive the rotating table to rotate, so that the installation module makes a rotational movement and drives the chamfering module to rotate to switch the chamfer facing the bending direction of the copper row of the chamfering module to the target chamfer, and the size of the target chamfer is consistent with the selected chamfering parameter to adapt to the thickness of the copper row to be bent;

[0058] When the target chamfer moves to the bending position, turn off the first driving member 11 to fix the position of the installation module;

[0059] Start the second driving member 12, and the second driving member 12 runs to be connected to the chamfering module. Based on the selected copper row thickness parameter and the movement parameter of the second driving member, control the chamfering module to move upward relative to the installation module to increase the clamping space;

[0060] Control the copper row to be bent to extend into the clamping space along the set movement direction;

[0061] Control the chamfering module to move downward relative to the installation module to reduce the clamping space, so as to firmly clamp and position the copper row to be bent;

[0062] When the copper row to be bent is positioned at the preset position, turn off the second driving member 12 to fix the position of the copper row to be bent;

[0063] Start the third driving member 10, and based on the bending module movement parameter, control the bending module to make a rotational movement to bend the copper row. Among them, the force application parameter of the bending knife 5 and the movement direction parameter of the bending block 4 are selected based on the copper row bending parameter.

[0064] Further, the bending method of the present invention can automatically achieve precise bending of copper rows with different thicknesses, and has simple operation and high production efficiency.

[0065] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An adaptive copper bar bending device, characterized in that, It includes an installation module, a chamfering module with a clamping space, a bending module, and a driving component. The chamfering module is movably installed on the installation module. The driving component is used to sequentially drive the installation module to rotate and drive the chamfering module to rotate to switch the chamfer size of the chamfering module facing the bending direction of the copper bar, drive the chamfering module to move up and down relative to the installation module to change the size of the clamping space for clamping and positioning the copper bar (13), and drive the bending module to rotate to bend the copper bar (13).

2. The bending device according to claim 1, characterized in that, The chamfering module includes two oppositely arranged inclined surface clamping blocks (1), and chamfers (2) with different sizes are arranged on both lateral sides of the two inclined surface clamping blocks (1).

3. The bending device according to claim 2, wherein, The installation module includes a V-shaped installation block (3). The inclined surface clamping block (1) is movably installed in the installation block (3) through its inclined surface, and there is a clamping space between the two inclined surface clamping blocks (1).

4. The bending device according to claim 1, 2 or 3, characterized in that, The bending module includes two bending blocks (4) arranged around the installation module.

5. The bending device according to claim 1, 2 or 3, characterized in that The driving component includes a first driving member (11) connected to the installation module and used to drive the installation module to rotate.

6. The bending device according to claim 1, 2 or 3, characterized in that The driving component further includes a second driving member (12) connected to the chamfering module and used to drive the chamfering module to move up and down relative to the installation module.

7. The bending device according to claim 1, 2 or 3, characterized in that, The driving component further includes a third driving member (10) connected to the bending module and used to drive the bending module to rotate.

8. The bending device according to claim 1, 2 or 3, characterized in that, It further includes a controller electrically connected to the driving component.

9. A bending method for bending copper bars, characterized in that, It includes the following steps: Based on the control parameters, control the installation module to rotate and drive the chamfering module to rotate to switch the chamfer size of the chamfering module facing the bending direction of the copper bar; Control the chamfering module to move up and down relative to the installation module to change the size of the clamping space for clamping and positioning the copper bar; Control the bending module to rotate to bend the copper bar.

10. The bending method according to claim 9, characterized in that, The control parameters include copper bar thickness parameters, copper bar bending parameters, chamfer parameters, and copper bar bending times parameters.

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