Servo draw bender

Abstract

The application discloses a servo draw-bending machine, and relates to the technical field of draw-bending machines. The servo draw-bending machine comprises a rack, a rotating driving mechanism arranged on the rack, a curved arm horizontally rotatably arranged on the rack and connected to the rotating driving mechanism and rotated under the driving of the rotating driving mechanism, a forming die fixed to the curved arm and provided with a first die groove matched with a forming guide groove, a first clamping mechanism fixedly arranged on the curved arm and used for clamping a first groove section of the guide groove, a second clamping mechanism horizontally rotatably arranged on the rack and used for clamping a second groove section of the guide groove, and a follower with one end horizontally rotatably connected to the second clamping mechanism and the other end horizontally rotatably connected to the rack. The follower can be stretched and contracted along with the rotation of the rotating seat. The servo draw-bending machine can reduce unnecessary deformation of the end of the guide groove and improve the quality of the finished guide groove.

Description

Technical Field

[0001] This invention relates to the technical field of bending machines, and particularly to a servo bending machine. Background Technology

[0002] Bending pipes, guide channels, and other similar components are commonly used parts in automotive parts. For example... Figure 1 The illustration shows a guide channel 100 for an automobile. The guide channel 100 includes a straight first channel segment 110 and a second channel segment 120, and a connecting channel segment 130 connecting the first channel segment 110 and the second channel segment 120. The connecting channel segment 130 is bent into an arc shape. During processing, the guide channel 100 is first formed into a long, straight shape by stamping a metal part. The guide channel 100 has a groove 140 extending along its length, and an upwardly extending flange 150 is provided at the lower part of the guide channel 100, partially surrounding the groove 140. Subsequently, the guide channel 100 is cut into the shape shown below. Figure 2 The desired length is shown, and then it is bent into a curved connecting groove section 130 using a bending machine. Figure 1 The guide groove 100 shown.

[0003] In related technologies, a bending machine includes at least a first clamping mechanism, a second clamping mechanism, and a forming mold. The two clamping mechanisms clamp the two ends of the guide groove respectively, and the arc-shaped mold core of the forming mold contacts the middle of the guide groove. The forming mold and the first clamping mechanism are mounted on a curved arm. When the curved arm rotates, it drives the first clamping mechanism and the forming mold to rotate around the axis of rotation of the curved arm, thereby achieving the bending of the guide groove.

[0004] Due to the processing requirements of the curved part of the guide groove, the arc-shaped mold core of some forming molds does not coincide with the rotation axis of the curved arm, or the arc-shaped mold core of the forming mold is not a strictly circular arc surface. As a result, during the process of the forming mold rotating relative to the guide groove material to bend and form the guide groove, the tangent direction of the force application point of the forming mold on the guide groove will change with the bending of the guide groove. This causes the end of the guide groove held by the second clamping mechanism to have a tendency to swing, resulting in unnecessary deformation of the part of the guide groove held by the second clamping mechanism, which affects the quality of the finished guide groove. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a servo bending machine that can reduce unnecessary deformation at the end of the guide groove and improve the quality of the finished guide groove.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] This invention provides a servo bending machine, the servo bending machine comprising:

[0008] frame;

[0009] A rotation drive mechanism is mounted on the frame;

[0010] A curved arm is rotatably mounted on the frame and is connected to the rotation drive mechanism and rotates under the drive of the rotation drive mechanism.

[0011] A forming mold, the forming mold being fixed to the curved arm, the forming mold having a first groove for engaging with a forming guide groove, the first groove being an arc shape protruding toward the guide groove;

[0012] A first clamping mechanism is fixedly disposed on the curved arm and is used to clamp the first groove segment of the guide groove.

[0013] The second clamping mechanism and the first clamping mechanism are disposed on opposite sides of the molding die. The second clamping mechanism is rotatably disposed on the frame and is used to clamp the second groove segment of the guide groove.

[0014] A follower, one end of which is rotatably connected to the second clamping mechanism, and the other end of which is rotatably connected to the frame; the follower is capable of extending and retracting as the second clamping mechanism rotates.

[0015] Furthermore, the follower includes a follower cylinder; the cylinder body of the follower cylinder is rotatably connected to the frame, and the piston rod of the follower cylinder is rotatably connected to the second clamping mechanism; or, the cylinder body of the follower cylinder is rotatably connected to the second clamping mechanism, and the piston rod of the follower cylinder is rotatably connected to the frame; when the second clamping mechanism rotates, it can drive the piston rod of the follower cylinder to extend and retract relative to the cylinder body.

[0016] Furthermore, the second clamping mechanism includes a clamping assembly and a rotating base. The rotating base is rotatably mounted on the frame. The clamping assembly is fixedly connected to the rotating base and can rotate synchronously with the rotating base. The end of the follower that is away from the frame is rotatably connected to the rotating base.

[0017] Furthermore, the clamping assembly includes a clamping support, a fixed clamping block, a movable clamping block, and a clamping drive. The clamping support is fixedly disposed above the rotating seat. The fixed clamping block and the clamping drive are fixedly disposed on the clamping support. The movable clamping block is connected to the drive end of the clamping drive. The clamping drive can drive the movable clamping block to move relative to the fixed clamping block to clamp the second groove segment of the guide groove.

[0018] Furthermore, the frame is provided with a linear drive mechanism and a linear moving seat. The drive end of the linear drive mechanism is connected to the linear moving seat to drive the linear moving seat to slide along a direction close to or away from the crank arm. The rotating seat is rotatably disposed on the linear moving seat.

[0019] Furthermore, a linear guide rail is provided on the frame, the linear guide rail extends parallel to the driving direction of the linear drive mechanism, and a guide slider that slides with the linear guide rail is provided below the linear moving seat.

[0020] Furthermore, the molding die also has a second groove, which is long and straight. The second groove is connected to the end of the first groove near the first clamping mechanism, and the outer side of the first groove segment of the guide groove is attached to the second groove.

[0021] Furthermore, the servo bending machine also includes a first pressing mechanism, which includes a first pressing head and a first pressing drive. The first pressing drive is fixedly disposed on the crank arm, and the first pressing head is connected to the driving end of the first pressing drive. The first pressing head is inserted into the second groove section of the guide groove and presses the second groove section of the guide groove into the second groove.

[0022] Furthermore, the servo bending machine also includes a second pressing mechanism, which includes a second pressing head and a second pressing drive. The second pressing drive is fixedly mounted on the frame, and the second pressing head is connected to the drive end of the second pressing drive. The second pressing head is directly opposite the end of the second groove that connects to the first groove. The second pressing drive can drive the second pressing head to insert into the guide groove and press the guide groove against the forming mold.

[0023] Furthermore, a core is provided in the guide groove. The core is elongated and inserted into the guide groove. The core is attached to the inner wall of the guide groove and can bend with the guide groove.

[0024] Furthermore, the insert includes multiple links, which are inserted into the guide groove and arranged along the length of the guide groove, and adjacent links are horizontally rotatably connected.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. In the servo bending machine of the present invention, the first clamping mechanism and the second clamping mechanism respectively clamp the first groove segment and the second groove segment of the guide groove to keep the guide groove fixed and to provide tensioning force for the guide groove when it bends; the connecting groove segment of the guide groove that needs to be bent contacts the first groove of the forming die. When the servo bending machine is working, the rotation drive mechanism drives the crank arm to rotate, and the first clamping mechanism and the forming die on the crank arm rotate with the crank arm, causing the guide groove to bend with the contact part between the guide groove and the first groove as the fulcrum, until the connecting groove segment of the guide groove is bent into an arc shape that fits the first groove.

[0027] During the bending process of the guide groove, the second clamping mechanism clamps the second groove section of the guide groove. When the forming mold rotates, the tangent direction between the forming mold and the connecting groove section changes with the rotation of the forming mold, causing the second groove section of the guide groove to have a swinging tendency. At this time, the second groove section of the guide groove drives the second clamping mechanism to rotate with the second groove section of the guide groove, and the second clamping mechanism drives the follower to extend and retract.

[0028] Compared to the traditional clamping mechanism in bending machines that fixes the end of the guide groove, in this design, the second clamping mechanism rotates with the second section of the guide groove. The second section of the guide groove between the second clamping mechanism and the forming mold remains tangent to the circular surface of the first groove of the forming mold, ensuring the quality of the finished guide groove. Simultaneously, the second clamping mechanism clamps and tensions the second section parallel to it, making the portion of the second section clamped by the second clamping mechanism less prone to twisting and breakage.

[0029] 2. The follower includes a follower cylinder, the two ends of which are rotatably connected to the frame and the second clamping mechanism, respectively. When the second clamping mechanism rotates, the follower cylinder swings and extends and retracts.

[0030] 3. The second clamping mechanism includes a clamping assembly and a rotating seat. The clamping assembly includes a clamping drive and a fixed clamping block disposed on the clamping support. When the clamping assembly clamps the second groove section of the guide groove, the clamping drive drives the movable clamping block to move closer to the fixed clamping block, clamping the guide groove between the fixed clamping block and the movable clamping block.

[0031] 4. A linear drive mechanism and a linear moving seat are installed on the frame. Before bending the guide groove, the linear drive mechanism drives the linear moving seat to slide away from the curved arm. The second clamping mechanism and the first clamping mechanism stretch and tension the guide groove, providing a pre-tension force to the guide groove so that the guide groove reaches the yield limit. As a result, the guide groove is not easy to spring back after bending, thus ensuring the processing quality of the guide groove.

[0032] 5. The outer side of the first groove section of the guide groove is attached to the second groove. When bending the guide groove, part of the first groove section of the guide groove is engaged with the second groove. The second groove limits the first groove section of the guide groove, making the first groove section of the guide groove more stable during the forming of the guide groove and resulting in better quality of the finished guide groove.

[0033] 6. The first pressing mechanism is set on the crank arm. When the crank arm rotates, the first pressing mechanism rotates accordingly. The first pressing drive drives the first pressing head to press the second groove section of the guide groove into the second groove, so that the second groove section of the guide groove remains in close contact with the second groove, reducing the probability of the second groove section of the guide groove warping.

[0034] 7. The second clamping mechanism is set on the frame. Initially, the second clamping head is directly opposite the end of the second groove that connects to the first groove. During the bending operation, the second clamping drive drives the second clamping head to insert into the guide groove and press the guide groove against the forming mold. When the forming mold rotates, the guide groove rotates around its contact point with the first groove to bend. The second clamping head limits the guide groove, reducing the probability of warping of the bent guide groove and ensuring the quality of the finished guide groove.

[0035] 8. The insert is inserted into the guide groove to support the inner wall of the guide groove, reducing the probability of deformation and damage during bending. The multiple links of the insert can be horizontally rotatably connected so that they can be bent into a shape that fits the guide groove when it is bent, thus avoiding the insert affecting the bending and shaping of the guide groove. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the guide groove after bending and forming.

[0037] Figure 2 This is a three-dimensional structural diagram of the guide groove before bending.

[0038] Figure 3 This is a three-dimensional structural diagram of a servo-driven bending machine according to an embodiment of the present invention. Figure 1 .

[0039] Figure 4 This is a three-dimensional structural diagram of a servo-driven bending machine according to an embodiment of the present invention. Figure 2 .

[0040] Figure 5 This is a three-dimensional structural schematic diagram of a molding die according to an embodiment of the present invention.

[0041] Figure 6 This is a three-dimensional structural diagram of the first clamping mechanism, the first pressing mechanism, and the second pressing mechanism according to an embodiment of the present invention.

[0042] Figure 7 This is a top view of the initial structure of a servo bending machine according to an embodiment of the present invention.

[0043] Figure 8 This is a top view of a servo bending machine for bending guide grooves according to an embodiment of the present invention.

[0044] Figure 9 This is a three-dimensional structural schematic diagram of the second clamping mechanism according to an embodiment of the present invention.

[0045] Figure 10 This is a three-dimensional structural diagram of the second clamping mechanism and the insert according to an embodiment of the present invention.

[0046] In the picture:

[0047] 1000 Servo bending machine; 100 Guide groove; 110 First groove section; 120 Second groove section; 130 Connecting groove section; 140 Groove; 150 Flanging; 200 Frame; 210 Linear drive mechanism; 220 Linear moving seat; 230 Linear guide rail; 240 Guide slider; 300 Rotary drive mechanism; 310 Servo motor; 320 Gearbox; 330 Drive wheel; 340 Driven wheel; 400 Crank arm; 500 Forming die; 510 First groove; 520 Second groove; 600 First clamping mechanism; 610 First clamping seat; 611 Step groove; 620. First-stage clamping cylinder; 630. First-stage clamping block; 640. Limiting plate; 700. Second-stage clamping mechanism; 710. Rotating seat; 720. Clamping assembly; 721. Clamping support; 723. Fixed clamping block; 724. Movable clamping block; 725. Clamping drive component; 726. Clamping groove; 810. First pressing mechanism; 811. First pressing head; 812. First pressing drive component; 820. Second pressing mechanism; 821. Second pressing head; 822. Second pressing drive component; 910. Follower component; 920. Insert core; 921. Chain link; 922. Inner support block; 930. Core drive cylinder. Detailed Implementation

[0048] The invention will now be further described with reference to the accompanying drawings.

[0049] This paper establishes an orthogonal coordinate system XYZ, where the positive direction of the X-axis represents left, the negative direction of the X-axis represents right, the positive direction of the Y-axis represents front, the negative direction of the Y-axis represents back, the positive direction of the Z-axis represents top, and the negative direction of the Z-axis represents bottom. It should be noted that the terms "left," "right," "front," "back," "top," and "bottom" are merely relative positions used for ease of description and are not intended to limit the technical solution of this embodiment.

[0050] This embodiment discloses a servo-driven bending machine 1000, referring to... Figure 1The servo bending machine 1000 is used for bending and forming a guide groove 100. The guide groove 100 includes a straight first groove segment 110 and a second groove segment 120, and a connecting groove segment 130 bent into an arc shape and connected between the first groove segment 110 and the second groove segment 120. The first groove segment 110 and the second groove segment 120 are tangent to the two ends of the connecting groove segment 130. A groove 140 extending along the length direction of the guide groove 100 is formed inside the guide groove 100. A flange 150 is connected to the lower edge of the guide groove 100, and the flange 150 extends upward to partially surround the lower part of the groove 140.

[0051] Reference Figure 3 and Figure 4 The servo bending machine 1000 of this embodiment includes a frame 200, a rotation drive mechanism 300, a curved arm 400, a forming mold 500, a first clamping mechanism 600, and a second clamping mechanism 700. The frame 200 is fixedly installed on the ground, the rotation drive mechanism 300 is installed on the frame 200, and the curved arm 400 is horizontally rotatably installed on the frame 200. The curved arm 400 is drively connected to the rotation drive mechanism 300 and rotates under the drive of the rotation drive mechanism 300.

[0052] The molding die 500 and the first clamping mechanism 600 are fixed to the crank arm 400, and the second clamping mechanism 700 is disposed on the frame 200. The first clamping mechanism 600 and the second clamping mechanism 700 are disposed on opposite sides of the molding die 500. The first clamping mechanism 600 is used to clamp the first groove segment 110 of the guide groove 100, and the second clamping mechanism 700 is used to clamp the second groove segment 120 of the guide groove 100.

[0053] Specifically, in this embodiment, the first clamping mechanism 600 is disposed on the left side of the guide groove 100, and the second clamping mechanism 700 is disposed on the right side of the guide groove 100. The guide groove 100 is placed horizontally in the left-right direction, with the first groove segment 110 of the guide groove 100 located on the left side of the connecting groove segment 130, and the second groove segment 120 of the guide groove 100 located on the right side of the connecting groove segment 130. The molding mold 500 is disposed on the rear side of the guide groove 100, and the front side of the molding mold 500 contacts the rear part of the outer side of the guide groove 100.

[0054] Reference Figures 3 to 5The front right side of the molding die 500 has a first groove 510 for engaging with the molding guide groove 100. The first groove 510 is an arc shape that protrudes towards the guide groove 100. Initially (i.e., before the guide groove 100 is bent), the cross-section of the left end of the first groove 510 is parallel to the left-right direction, and the right end of the first groove 510 extends to the right rear. The inner cavity of the first groove 510 is adapted to the guide groove 100, that is, the shape and size of the first groove 510 are similar to those of the guide groove 100, and the guide groove 100 can be embedded in the first groove 510 as the molding die 500 rotates. When the servo bending machine 1000 is working, the first clamping mechanism 600 and the second clamping mechanism 700 clamp the two ends of the tension guide groove 100. The rotation drive mechanism 300 drives the crank arm 400 to rotate. The first clamping mechanism 600 and the forming mold 500 on the crank arm 400 rotate with the crank arm 400, causing the guide groove 100 to bend with the contact part between the guide groove 100 and the inner wall of the first type groove 510 as the fulcrum. The connecting groove section 130 of the guide groove 100 gradually bends and wraps around the first type groove 510 until the connecting groove section 130 of the guide groove 100 bends into an arc shape that fits the first type groove 510.

[0055] In this embodiment, the first groove 510 is specifically an arc-shaped groove. When the forming mold 500 rotates, the tangent direction of the point where the guide groove 100 contacts and bends the first groove 510 continuously changes. The tangent at the left end of the first groove 510 extends in the left-right direction through the clamping point of the first clamping mechanism 600 that clamps the guide groove 100, so that the first groove segment 110 of the formed guide groove 100 is tangent to the connecting groove segment 130. In addition, in other embodiments, the first groove 510 can also be set into an involute or progressive arc shape with gradually changing curvature according to the processing requirements of the guide groove 100.

[0056] In this embodiment, the center of curvature of the first groove 510 is located to the right of the rotation center of the crank arm 400 (i.e., the rotation center of the molding die 500), such that the length of the line connecting the rotation center of the crank arm 400 and the end of the first groove 510 closer to the second groove 520 is less than the length of the line connecting the rotation center of the crank arm 400 and the end of the first groove 510 farther from the second groove 520. When the molding die 500 rotates around the rotation center, the bending force application point of the first groove 510 and the guide groove 100 gradually moves forward.

[0057] In addition, in other embodiments, the curvature center of the first groove 510 may also be located to the left of the rotation center of the crank arm 400, or the curvature center of the first groove 510 may coincide with the rotation center of the crank arm.

[0058] Reference Figure 4In this embodiment, the rotation drive mechanism 300 includes a servo motor 310, a gearbox 320, a drive wheel 330, and a driven wheel 340. The servo motor 310 and gearbox 320 are fixedly mounted on the frame 200, while the drive wheel 330 and driven wheel 340 are horizontally rotatable on the frame 200. The crank arm 400 is fixedly mounted above the driven wheel 340. The servo motor 310 is driven by the gearbox 320, and the output shaft of the gearbox 320 is coaxially connected to the drive wheel 330, which meshes with the driven wheel 340. When the motor shaft of the servo motor 310 rotates, it drives the drive wheel 330 to rotate, which in turn drives the driven wheel 340 to rotate, thereby rotating the crank arm 400. Furthermore, in other embodiments, the rotation drive mechanism 300 may also employ a rotary cylinder or other suitable rotation drive components.

[0059] Reference Figure 3 and Figure 4 In this embodiment, the crank arm 400 is a horizontally arranged plate-shaped component. The right end of the crank arm 400 is circular and coaxial with the driven wheel 340, and the right end of the crank arm 400 is fixedly connected to the driven wheel 340. The forming mold 500 is disposed on the upper side of the right end of the crank arm 400. The left end of the crank arm 400 is rectangular, and the first clamping mechanism 600 is fixedly disposed on the upper side of the left end of the crank arm 400. This arrangement allows the crank arm 400 to meet the installation requirements of the first clamping mechanism 600 and the forming mold 500 while reducing the probability of interference between the crank arm 400 and the second clamping mechanism 700 on the right side or the frame 200 when the crank arm 400 rotates, making the overall structure of the servo bending machine 1000 more reasonable. In addition, in other embodiments, the crank arm 400 can also be configured with other suitable shapes.

[0060] Reference Figure 4 and Figure 6 In this embodiment, the first clamping mechanism 600 includes a first clamping seat 610, a first clamping cylinder 620, and a first clamping block 630. The first clamping seat 610 is fixedly mounted on the crank arm 400. The first clamping seat 610 is provided with a horizontally extending stepped groove 611. The end of the first groove segment 110 of the guide groove 100 is placed in the stepped groove 611, and the outer rear part of the first groove segment 110 abuts against the front inner wall of the stepped groove 611. The first clamping cylinder 620 is horizontally mounted on the first clamping seat 610 in the front-rear direction, and the piston rod of the first clamping cylinder 620 is positioned directly opposite the stepped groove 611. The first clamping block 630 is fixedly connected to the piston rod of the first clamping cylinder 620. When the piston rod of the first clamping cylinder 620 extends, it drives the first clamping block 630 to insert into the guide groove 100 on the stepped groove 611, clamping and limiting the guide groove 100 between the first clamping block 630 and the stepped groove 611.

[0061] In addition, in other embodiments, the first clamping mechanism 600 may also use other suitable clamps, as long as they can clamp and fix the first groove segment 110 of the guide groove 100 onto the crank arm 400.

[0062] In this embodiment, a limiting plate 640 is provided at the left end of the stepped groove 611 of the first clamping seat 610. The limiting plate 640 abuts against the left end of the first groove section 110 of the guide groove 100 to facilitate the precise installation of the guide groove 100 and improve processing efficiency and accuracy.

[0063] Reference Figure 5 and Figure 6 In this embodiment, the molding die 500 also has a second groove 520, which is disposed on the front side of the molding die 500. The second groove 520 is adapted to the guide groove 100 and is connected to the end of the first groove 510 near the first clamping mechanism 600 (i.e., the second groove 520 is connected to the left end of the first groove 510). The second groove 520 is a long straight shape extending in the left-right direction, and the second clamping mechanism 700 is disposed on the extension line of the second groove 520. The first groove 510 and the second groove 520 are shaped to match the connecting groove segment 130 and the first groove segment 110 after the guide groove 100 is formed. The outer rear part of the first groove segment 110 of the guide groove 100 is attached to the inner wall of the second groove 520. When bending the guide groove 100, part of the outer side of the first groove segment 110 of the guide groove 100 is engaged with the second groove 520. The second groove 520 limits the outer side of the first groove segment 110 of the guide groove 100 from the rear, so that the first groove segment 110 of the guide groove 100 is more stable when the guide groove 100 is formed, and the finished product of the guide groove 100 has better quality.

[0064] In addition, in other embodiments, the second type groove 520 may not be provided, or the second type groove 520 may be provided in a form that does not contact the guide groove 100.

[0065] Reference Figure 6 In this embodiment, the servo bending machine 1000 further includes a first pressing mechanism 810 and a second pressing mechanism 820. The first pressing mechanism 810 and the second pressing mechanism 820 are used to press the guide groove 100 against the forming mold 500 to ensure the finished product quality of the guide groove 100.

[0066] Reference Figure 6The first pressing mechanism 810 includes a first pressing head 811 and a first pressing drive member 812. The first pressing drive member 812 is fixedly disposed on the crank arm 400, and the first pressing head 811 is connected to the driving end of the first pressing drive member 812. The first pressing head 811 is disposed directly opposite the second groove 520. The first pressing drive member 812 can drive the first pressing head 811 to be inserted into the second groove segment 120 of the guide groove 100 in a straight line, thereby pressing the second groove segment 120 of the guide groove 100 into the second groove 520. When the crank arm 400 rotates, the first clamping mechanism 810 rotates accordingly. The first clamping drive 812 drives the first clamping head 811 to press the second groove segment 120 of the guide groove 100 into the second groove 520, thereby achieving follow-up clamping of the second groove segment 120 of the guide groove 100. This keeps the second groove segment 120 of the guide groove 100 tightly attached to the second groove 520, reducing the probability of the second groove segment 120 of the guide groove 100 warping. At the same time, the first clamping head 811 presses the second groove segment 120 of the guide groove 100 into the second groove 520. When the guide groove 100 bends and deforms, the force is less likely to be transmitted to the first clamping mechanism 600, reducing the bending moment of the guide groove 100 clamped by the first clamping mechanism 600 and reducing the probability of the first groove segment 110 of the guide groove 100 bending and deforming.

[0067] In this embodiment, the first pressing drive 812 specifically includes a hydraulic cylinder, which is horizontally arranged perpendicular to the direction of the second groove 520, and the piston rod of the hydraulic cylinder extends vertically toward the second groove 520. The cylinder body is fixedly connected to the forming mold 500 via a support, thereby achieving a fixed connection between the hydraulic cylinder and the crank arm 400; the first pressing head 811 is fixedly connected to the piston rod of the hydraulic cylinder. Furthermore, in other embodiments, the first pressing drive 812 may also be an electric cylinder, a pneumatic cylinder, or other suitable drive mechanism.

[0068] In this embodiment, the second pressing mechanism 820 includes a second pressing head 821 and a second pressing drive member 822. The second pressing drive member 822 is fixedly disposed on the frame 200, and the second pressing head 821 is connected to the driving end of the second pressing drive member 822. The second pressing drive member 822 can drive the second pressing head 821 to insert into the guide groove 100 and press the guide groove 100 against the forming mold 500. Initially (i.e., before the guide groove 100 begins to bend), the second pressing head 821 is directly opposite the end of the second groove 520 that connects to the first groove 510. During the bending operation, the second pressing drive member 822 drives the second pressing head 821 to insert into the guide groove 100 and press the guide groove 100 against the forming mold 500. As the forming mold 500 rotates, the guide groove 100 rotates around its contact point with the first groove 510 to bend. The second pressing head 821 of the guide groove 100 limits the guide groove 100, reducing the probability of the guide groove 100 warping at the first groove 510 after bending, and ensuring the quality of the finished guide groove 100.

[0069] In this embodiment, the second pressing drive component 822 specifically includes a hydraulic cylinder, the cylinder body of which is fixedly connected to the frame 200 via a bracket. The hydraulic cylinder is horizontally arranged in the front-to-back direction, and the piston rod of the hydraulic cylinder is positioned directly opposite the forming mold 500. The first pressing head 811 is fixedly connected to the piston rod of the hydraulic cylinder.

[0070] In addition, in other embodiments, the second clamping drive 822 may also be an electric cylinder, a pneumatic cylinder or other suitable drive mechanism.

[0071] Furthermore, in other embodiments, the first pressing mechanism 810 and the second pressing mechanism 820 may not be provided. In other embodiments, only the first pressing mechanism 810 or only the second pressing mechanism 820 may be provided.

[0072] Reference Figure 3 and Figure 4 In this embodiment, the second clamping mechanism 700 includes a rotating seat 710 and a clamping assembly 720. The rotating seat 710 is rotatably mounted on the frame 200, and the clamping assembly 720 is fixedly mounted on the rotating seat 710. The clamping assembly 720 is used to clamp the second groove segment 120 of the guide groove 100.

[0073] A follower 910 is connected to the rotating base 710. One end of the follower 910 is rotatably connected to the rotating base 710, and the other end of the follower 910, which is away from the second clamping mechanism 700, is rotatably connected to the frame 200. The follower 910 can extend and retract as the rotating base 710 rotates.

[0074] Reference Figure 7 and Figure 8 During the bending process of the guide groove 100, the second clamping mechanism 700 clamps the second groove segment 120 of the guide groove 100 through the clamping assembly 720. The first groove segment 110 of the guide groove 100 and the forming mold 500 rotate clockwise. The connecting groove segment 130 of the guide groove 100 rotates and bends under the action of the forming mold 500. When the forming mold 500 rotates, the second groove segment 120 drives the clamping assembly 720 and the rotating seat 710 to rotate with the second groove segment 120. The rotating seat 710 drives the follower 910 to extend and retract.

[0075] During the rotation of the rotating seat 710, the clamping assembly 720 rotates along with the second groove segment 120 of the guide groove 100, so that the clamping assembly 720 clamps and tightens the second groove segment 120 parallel to it. This maintains that the guide groove 100 clamped by the clamping assembly 720 is tangent to the arc surface of the first groove 510 of the forming mold 500, thereby ensuring that the second groove segment 120 of the finished guide groove 100 is tangent to the end of the connecting groove segment 130, thus guaranteeing the processing quality of the guide groove 100. Compared with the traditional bending machine where the clamping mechanism fixes the end of the guide groove 100, this solution reduces the probability of the second groove segment 120 bending or breaking due to the bending moment at the clamping point of the second clamping mechanism 700.

[0076] Specifically, in this embodiment, initially, the clamping end of the clamping assembly 720 and the rotation center of the rotating seat 710 are located on the same left-right extending straight line, and the connection point of the first groove 510 and the second groove 520 is located in front of the rotation center of the rotating seat 710; or, initially, the clamping end of the first clamping mechanism 600, the connection point of the first groove 510 and the second groove 520, the clamping end of the clamping assembly 720, and the rotation center of the rotating seat 710 are located on the same left-right extending straight line. When the crank arm 400 rotates clockwise, the first clamping mechanism 600 and the forming mold 500 rotate clockwise, and the inner wall of the first groove 510 has a forward-pushing guide groove 100, causing the second groove segment 120 of the guide groove 100 to rotate counterclockwise. Since the second groove segment 120 is kept in a taut state, the second groove segment 120 can pull the clamping assembly 720 and the rotating seat 710 forward, so that the clamping assembly 720 and the rotating seat 710 rotate counterclockwise synchronously. At this time, the follower 910 is compressed by the rotating seat 710, the clamping assembly 720 is parallel to the second groove segment 120 and clamps the second groove segment 120, and the second groove segment 120 remains tangent to the arc surface of the first groove 510.

[0077] In some embodiments, initially, the connection point between the first groove 510 and the second groove 520 is located behind the rotation center of the rotating seat 710, and the second groove 520 and the clamping assembly 720 are a certain distance apart in the front-back direction. When the crank arm 400 rotates clockwise, the first clamping mechanism 600 and the forming mold 500 rotate clockwise, the forming mold 500 pulls the second groove segment 120 backward, and the second groove segment 120 pulls the clamping assembly 720 and the rotating seat 710 backward, so that the clamping assembly 720 and the rotating seat 710 rotate clockwise synchronously. At this time, the follower 910 is stretched by the rotating seat 710, the clamping assembly 720 is parallel to the second groove segment 120 and clamps the second groove segment 120, and the second groove segment 120 remains tangent to the arc surface of the first groove 510.

[0078] Reference Figure 9In this embodiment, the clamping assembly 720 includes a clamping support 721, a fixed clamping block 723, a movable clamping block 724, and a clamping drive member 725. The clamping support 721 is fixedly disposed above the rotating seat 710, and the clamping drive member 725 is fixedly connected to the clamping support 721. The movable clamping block 724 is connected to the driving end of the clamping drive member 725, and the fixed clamping block 723 is fixedly disposed on the clamping support 721 and abuts against the outer side of the second groove segment 120 of the guide groove 100. The fixed clamping block 723 and the movable clamping block 724 are respectively disposed on opposite sides of the guide groove 100. The clamping drive member 725 can drive the movable clamping block 724 to move relative to the fixed clamping block 723. When the clamping assembly 720 clamps the second groove segment 120 of the guide groove 100, the clamping drive 725 drives the movable clamping block 724 to move closer to the fixed clamping block 723, clamping the guide groove 100 between the fixed clamping block 723 and the movable clamping block 724.

[0079] In this embodiment, the clamping drive 725 includes a hydraulic cylinder, the cylinder body of which is fixed to the clamping support 721, and the piston rod of which is connected to the movable clamping block 724. Furthermore, in other embodiments, the clamping drive 725 may employ other suitable drive mechanisms.

[0080] In this embodiment, the clamping drive member 725 and the movable clamping block 724 are vertically arranged above the guide groove 100, and the fixed clamping block 723 is arranged below the guide groove 100. The movable clamping block 724 and the fixed clamping block 723 vertically clamp the second groove segment 120 of the guide groove 100. In addition, in other embodiments, the fixed clamping block 723 and the movable clamping block 724 may also be arranged on the front and rear sides of the guide groove 100 respectively, correspondingly clamping the drive member 725 horizontally.

[0081] In this embodiment, both the fixed clamping block 723 and the movable clamping block 724 are provided with clamping grooves 726 at their opposite ends. The clamping grooves 726 of the fixed clamping block 723 and the movable clamping block 724 can be closed to form a clamping cavity that fits with the guide groove 100.

[0082] Reference Figure 10 A core 920 is provided inside the guide groove 100. The core 920 is elongated and inserted into the guide groove 100. The core 920 fits against the inner wall of the guide groove 100 and can bend with the guide groove 100. The core 920 is inserted into the guide groove 100 to support the inner wall of the guide groove 100, reducing the probability of deformation and damage to the guide groove 100 during bending under force.

[0083] The insert 920 includes multiple links 921, which are inserted into the guide groove 100 and arranged along the length of the guide groove 100. Adjacent links 921 are horizontally rotatably connected so that they can be bent into a shape that fits the guide groove 100 when the guide groove 100 is bent, thus avoiding the insert 920 from affecting the bending and shaping of the guide groove 100.

[0084] In this embodiment, the thickness of the insert 920 is the same as the thickness of the flange 150 of the guide groove 100. The insert 920 is fitted into the area of ​​the lower part of the guide groove 100 that is partially surrounded by the flange 150, so as to avoid interference between the insert 920 and the first pressing head 811 or the second pressing head 821.

[0085] The insert 920 also includes an inner support block 922, which is connected to a link 921 near the second groove segment 120 of the guide groove 100. The inner support block 922 abuts against the inner walls of the upper and lower sides of the guide groove 100. The fixed clamping block 723 and the movable clamping block 724 are positioned opposite the inner support block 922, thereby supporting the portion of the guide groove 100 clamped by the second clamping mechanism 700 through the inner support block 922, preventing the second groove segment 120 of the guide groove 100 from deforming when clamped.

[0086] In this embodiment, the insert 920 further includes a spring plate, which extends horizontally in a long strip shape. The inner support block 922 and multiple chain links 921 are parallel to the spring plate and fixedly connected to it. The surface of the spring plate is parallel to the vertical direction. When the spring plate is not under force, it extends horizontally in a straight line, so that the multiple chain links 921 are arranged in a straight line for easy insertion into the guide groove 100. When the guide groove 100 is bent, the spring plate deforms under force, and the multiple chain links 921 can rotate relative to each other to fit the bent guide groove 100.

[0087] In this embodiment, a core drive cylinder 930 is connected to the clamping support 721. The core drive cylinder 930 and the insert 920 are located on the same straight line, and the piston rod of the core drive cylinder 930 is connected to the insert 920. The core drive cylinder 930 can drive the insert 920 to pass through the middle of the clamping cavity formed by the fixed clamping block 723 and the movable clamping block 724 to be inserted into the guide groove 100 from the end of the second groove segment 120 of the guide groove 100.

[0088] The core drive cylinder 930 can rotate synchronously with the rotating seat 710 and the clamping assembly 720, thereby keeping the piston rod of the core drive cylinder 930 parallel to the second groove section 120 of the guide groove 100, reducing the torsional deformation at the connection between the insert 920 and the core drive cylinder 930.

[0089] Reference Figure 7 and Figure 8 In this embodiment, the follower 910 includes a follower cylinder. The cylinder body of the follower cylinder is rotatably connected to the frame 200, and the piston rod of the follower cylinder is rotatably connected to the rotating seat 710.

[0090] In this embodiment, the follower cylinder is located behind the rotating base 710, and the rotational connection point between the follower cylinder and the frame 200 is located to the left of the rotational connection point between the follower cylinder and the rotating base 710. When the crank arm 400 rotates, the follower cylinder has no power, the second groove section 120 of the guide groove 100 drives the rotating base 710 to rotate, the rotating base 710 pushes the follower cylinder to swing, and causes the follower cylinder to retract.

[0091] In addition, in other embodiments, the follower cylinder may also be located in front of the rotating seat 710, and the rotation connection point between the follower cylinder and the frame 200 is located to the right of the rotation connection point between the follower cylinder and the rotating seat 710.

[0092] In other embodiments, the cylinder body of the follower cylinder may be rotatably connected to the rotating seat 710, and the piston rod of the follower cylinder may be rotatably connected to the frame 200.

[0093] In other embodiments, the follower 910 may also be a spring, a gas spring, or other suitable damping mechanism.

[0094] After the guide groove 100 is formed, the first clamping mechanism 600 and the second clamping mechanism 700 release the guide groove 100, and the operator can remove the guide groove 100 from the servo bending machine 1000. Then, the follow-up hydraulic cylinder can be started to push or pull the rotating seat 710 to reset the rotating seat 710.

[0095] Reference Figure 3 and Figure 4 In this embodiment, a linear drive mechanism 210 and a linear moving seat 220 are provided on the frame 200. The linear drive mechanism 210 is fixedly mounted on the frame 200, and the drive end of the linear drive mechanism 210 is connected to the linear moving seat 220 to drive the linear moving seat 220 to slide in a direction close to or away from the crank arm 400. A rotating seat 710 is rotatably mounted on the linear moving seat 220, and the end of the follower 910 away from the rotating seat 710 is rotatably connected to the top of the linear moving seat 220.

[0096] Before bending the guide groove 100, the linear drive mechanism 210 drives the linear moving seat 220 to slide away from the crank arm 400. The second clamping mechanism 700 and the first clamping mechanism 600 stretch and tension the guide groove 100, providing a pre-tensioning force to the guide groove 100 so that the guide groove 100 reaches the yield limit. As a result, the guide groove 100 is not easy to spring back after bending, ensuring the processing quality of the guide groove 100.

[0097] In this embodiment, the linear drive mechanism 210 includes a hydraulic cylinder, which is horizontally arranged in the left-right direction. The cylinder body is fixedly disposed on the right side of the linear motion base 220, and the piston rod of the cylinder extends to the left and is connected to the linear motion base 220. Furthermore, in other embodiments, the hydraulic cylinder may also be disposed below or to the left of the linear motion base 220. In other embodiments, the hydraulic cylinder may also be arranged in the opposite direction.

[0098] The linear drive mechanism 210 maintains a constant tension. During the bending and forming process of the guide groove 100, when the bending torque of the guide groove 100 is greater than the tension of the linear drive mechanism 210, the cylinder piston rod of the linear drive mechanism 210 is pulled out, and the second clamping mechanism 700 and the linear moving seat 220 move toward the forming mold 500 to prevent the guide groove 100 from being overstretched during the bending process and reaching the plastic deformation stage, which would cause damage to the guide groove 100.

[0099] In other embodiments, the linear drive mechanism 210 may also be an electric cylinder, a pneumatic cylinder, a motor screw mechanism, a gear rack mechanism, or other suitable drive mechanisms.

[0100] In this embodiment, a linear guide rail 230 is provided on the frame 200. The linear guide rail 230 extends parallel to the driving direction of the linear drive mechanism 210, that is, the linear guide rail 230 extends horizontally in the left-right direction. A guide slider 240 is provided below the linear moving seat 220, which slides with the linear guide rail 230. The sliding engagement between the guide slider 240 and the linear guide rail 230 makes the movement of the linear moving seat 220 more stable and smooth.

[0101] The above are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made in accordance with the structure, features and principles of the present invention patent application are included within the scope of the present invention patent application.

Claims

1. A servo-driven bending machine, characterized in that, The servo bending machine (1000) includes: Rack (200); A rotation drive mechanism (300) is disposed on the frame (200); A crank arm (400) is rotatably mounted on the frame (200) and is connected to the rotation drive mechanism (300) and rotates under the drive of the rotation drive mechanism (300). A molding die (500) is fixed to the crank arm (400). The molding die (500) has a first groove (510) for cooperating with the molding guide groove (100). The first groove (510) is arc-shaped and protrudes toward the guide groove (100). A first clamping mechanism (600) is fixedly disposed on the crank arm (400) and is used to clamp the first groove segment (110) of the guide groove (100). The second clamping mechanism (700) and the first clamping mechanism (600) are disposed on opposite sides of the molding die (500). The second clamping mechanism (700) is rotatably disposed on the frame (200). The second clamping mechanism (700) is used to clamp the second groove segment (120) of the guide groove (100). Follower (910), one end of which is rotatably connected to the second clamping mechanism (700), and the other end of which is rotatably connected to the frame (200); the follower (910) is capable of extending and retracting as the second clamping mechanism (700) rotates.

2. The servo-driven bending machine as described in claim 1, characterized in that, The follower (910) includes a follower cylinder; the cylinder body of the follower cylinder is rotatably connected to the frame (200), and the piston rod of the follower cylinder is rotatably connected to the second clamping mechanism (700); or, the cylinder body of the follower cylinder is rotatably connected to the second clamping mechanism (700), and the piston rod of the follower cylinder is rotatably connected to the frame (200); when the second clamping mechanism (700) rotates, it can drive the piston rod of the follower cylinder to extend and retract relative to the cylinder body.

3. A servo-driven bending machine as described in claim 1, characterized in that, The second clamping mechanism (700) includes a clamping assembly (720) and a rotating seat (710). The rotating seat (710) is rotatably mounted on the frame (200). The clamping assembly (720) is fixedly connected to the rotating seat (710) and can rotate synchronously with the rotating seat (710). The follower (910) is rotatably connected to the rotating seat (710) at one end away from the frame (200).

4. A servo-driven bending machine as described in claim 3, characterized in that, The clamping assembly (720) includes a clamping support (721), a fixed clamping block (723), a movable clamping block (724), and a clamping drive (725). The clamping support (721) is fixedly disposed above the rotating seat (710). The fixed clamping block (723) and the clamping drive (725) are fixedly disposed on the clamping support (721). The movable clamping block (724) is connected to the drive end of the clamping drive (725). The clamping drive (725) can drive the movable clamping block (724) to move relative to the fixed clamping block (723) to clamp the second groove segment (120) of the guide groove (100).

5. A servo-driven bending machine as described in claim 3, characterized in that, The frame (200) is provided with a linear drive mechanism (210) and a linear moving seat (220). The drive end of the linear drive mechanism (210) is connected to the linear moving seat (220) to drive the linear moving seat (220) to slide in a direction close to or away from the crank arm (400). The rotating seat (710) is rotatably disposed on the linear moving seat (220).

6. A servo-driven bending machine as described in claim 5, characterized in that, A linear guide rail (230) is provided on the frame (200), the linear guide rail (230) extends parallel to the driving direction of the linear drive mechanism (210), and a guide slider (240) is provided below the linear moving seat (220) to slide in cooperation with the linear guide rail (230).

7. A servo-driven bending machine as described in claim 1, characterized in that, The molding die (500) also has a second groove (520), which is long and straight. The second groove (520) is connected to the end of the first groove (510) near the first clamping mechanism (600), and the outer side of the first groove segment (110) of the guide groove (100) is attached to the second groove (520).

8. A servo-driven bending machine as described in claim 7, characterized in that, The servo bending machine (1000) further includes a first pressing mechanism (810), which includes a first pressing head (811) and a first pressing drive (812). The first pressing drive (812) is fixedly disposed on the crank arm (400), and the first pressing head (811) is connected to the driving end of the first pressing drive (812). The first pressing head (811) is inserted into the second groove section (120) of the guide groove (100) and presses the second groove section (120) of the guide groove (100) into the second groove (520).

9. A servo-driven bending machine as described in claim 7, characterized in that, The servo bending machine (1000) further includes a second pressing mechanism (820), which includes a second pressing head (821) and a second pressing drive (822). The second pressing drive (822) is fixedly mounted on the frame (200). The second pressing head (821) is connected to the driving end of the second pressing drive (822). The second pressing head (821) is directly opposite the end of the second groove (520) that is connected to the first groove (510). The second pressing head (821) can drive the second pressing head (821) to insert into the guide groove (100) and press the guide groove (100) against the forming mold (500).

10. A servo-driven bending machine as described in claim 1, characterized in that, A core (920) is provided in the guide groove (100). The core (920) is elongated and inserted into the guide groove (100). The core (920) fits against the inner wall of the guide groove (100) and can bend with the guide groove (100). The core (920) includes multiple links (921). The links (921) are inserted into the guide groove (100) and arranged along the length direction of the guide groove (100). Adjacent links (921) are horizontally rotatably connected.

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