2D bending mechanism

Abstract

The application relates to the technical field of motor manufacturing, and provides a 2D bending mechanism, which comprises a rack, a linear material pushing mechanism and a rotary bending mechanism. The linear material pushing mechanism comprises a feeding plate, a material pushing assembly and a material clamping assembly. The feeding plate is installed on the rack and is provided with a first groove section and a second groove section which are sequentially distributed along a first direction. The material pushing assembly pushes the flat wire to slide in the first groove section to the second groove section along the first direction. The material clamping assembly clamps the flat wire up and down to slide in the second groove section. The rotary bending mechanism comprises a rotary driving element, a pressing driving element and a first bending block. The first bending block is provided with a bending groove which is connected with the end of the second groove section. The output end of the pressing driving element is connected with a pressing block which presses the flat wire on the bending groove. The output end of the rotary driving element is connected with a second bending block. The material clamping assembly clamps the flat wire up and down to ensure that the flat wire does not deviate, and the bent flat wire meets the corresponding structural requirements.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and in particular to a 2D bending mechanism. Background Technology

[0002] As the name suggests, a flat wire motor uses flat copper wire in its stator winding. The winding is first made into a hairpin-like shape, then inserted into the stator slot, and finally the ends of the hairpin are soldered together at the other end.

[0003] Chinese patent CN119327904A discloses a high-speed dual-channel flat wire 2D forming mechanism, including a belt feeding mechanism, a paint removal and cutting mechanism, a right-side pushing mechanism, a left-side pushing mechanism, a single / double-channel transfer mechanism, a right-side 2D forming mechanism, a left-side 2D forming mechanism, a left-side 2D forming and feeding mechanism, a right-side 2D forming and feeding mechanism, a right-side 2D unloading mechanism, and a left-side 2D unloading mechanism. This high-speed dual-channel flat wire 2D forming mechanism, through a set of contraction springs, can limit the flat wire to be formed before it enters the belt feeding mechanism. The contraction springs, through contraction blocks and adapting mechanisms, constantly contract the two feeding wheels to opposite sides, thereby flattening the flat wire. This allows for initial positioning of the flat wire during subsequent processing. Simultaneously, the two feeding wheels have a certain range of motion, allowing for feeding of flat wires of various sizes.

[0004] However, existing 2D forming mechanisms suffer from deviation when conveying flat wires, and fail to meet the corresponding structural requirements after bending. Summary of the Invention

[0005] The purpose of this invention is to provide a 2D bending mechanism, which aims to solve the technical problem that existing 2D forming mechanisms fail to meet structural requirements after bending.

[0006] This application provides a 2D bending mechanism, including:

[0007] The frame has two perpendicular directions: a first direction, a second direction, and a vertical direction.

[0008] A linear feeding mechanism includes a feeding plate, a feeding assembly, and a clamping assembly. The feeding plate is mounted on the frame and has a first groove segment and a second groove segment distributed sequentially along a first direction. The feeding assembly pushes the flat wire along the first direction to slide from the non-through first groove segment to the second groove segment. The clamping assembly clamps the flat wire from top to bottom and moves it within the through second groove segment.

[0009] A rotary bending mechanism includes a rotary drive, a pressing drive, and a first bending block. The first bending block has a bending groove that mates with the end of a second groove segment. The output end of the pressing drive is connected to a pressing block, which presses the flat wire into the bending groove. The output end of the rotary drive is connected to a second bending block, which is located outside the first bending block. The rotary drive drives the second bending block to rotate, thereby bending the flat wire exposed in the bending groove in the first direction.

[0010] In one embodiment, the feeding assembly includes a first linear drive, a first lifting drive, and a feeding member. The first linear drive is mounted on the frame and drives the first lifting drive to slide along the first direction. The first lifting drive drives the feeding member to perform lifting and lowering movements. The feeding member has a first protrusion that abuts against the end of the flat wire away from the rotary bending mechanism.

[0011] In one embodiment, the pusher includes a connecting frame and a pusher plate. One end of the connecting frame is mounted on the first lifting drive, and the other end of the connecting frame is connected to the pusher plate. The lower end of the pusher plate protrudes below the connecting frame. The bottom of the pusher plate has a first contact plane, which is perpendicular to the vertical direction. A first protrusion protrudes from the end of the first contact plane away from the rotary bending mechanism. The side of the first protrusion near the rotary bending mechanism has a second contact plane, and the bottom of the first protrusion has a third contact plane.

[0012] In one embodiment, the first lifting drive includes a first drive body and a first lifting block. The first drive body has a first groove extending along the vertical direction. The first lifting block is vertically slidably mounted on the first groove. One side of the first lifting block in the second direction is connected to the pusher. The other side of the first lifting block in the second direction abuts against the first drive body through a first elastic member.

[0013] In one embodiment, the 2D bending mechanism further includes a first material guiding drive mounted on the feeding plate, the output end of the first material guiding drive being connected to a first material guiding plate, the thickness direction of the first material guiding plate being consistent with the second direction, and the first material guiding plate being located on the side of the first groove segment away from the main body portion of the pushing assembly; the first material guiding drive drives the first material guiding plate to move along the second direction to limit the flat wire located in the first groove segment on one side in the second direction.

[0014] In one embodiment, the 2D bending mechanism further includes a feeding drive mounted on the feeding plate. The output end of the feeding drive is connected to the feeding plate. The feeding plate is located on the side of the first groove segment away from the second groove segment. The feeding drive drives the feeding plate to move along the first direction to push the flat wire exposed in the first groove segment into the first groove segment.

[0015] In one embodiment, the clamping assembly includes a second linear drive, a second lifting drive, and two clamping members spaced vertically apart. The second linear drive is mounted on the frame and drives the second lifting drive to slide along the first direction. The clamping members have clamping plates that can be embedded in the second slot. The second lifting drive drives the two clamping members to perform lifting movements so that the two clamping plates close or separate in the vertical direction.

[0016] In one embodiment, the second lifting drive includes a second drive body and two second lifting blocks. The second drive body has a second slide groove extending along the vertical direction. The second lifting blocks are vertically slidably mounted in the second slide groove. One side of the second lifting block in the second direction is connected to the clamping member, and the other side of the second lifting block in the second direction abuts against the second drive body via a second elastic member.

[0017] In one embodiment, the 2D bending mechanism further includes at least one pair of positioning components, each pair of positioning components being located on opposite sides of the second groove segment in the second direction. The positioning components include a positioning block, a sliding block, a rotating block, and a third elastic member. The positioning block is fixedly mounted on the feeding plate, the sliding block is slidably mounted on the feeding plate along the second direction and located on the side of the positioning block closer to the second groove segment, the rotating block is rotatably mounted on the sliding block, and the two ends of the third elastic member are compressed and abutted between the positioning block and the sliding block, respectively.

[0018] In one embodiment, the 2D bending mechanism includes an adapter plate having an adapter groove extending along the vertical direction, the adapter groove being located directly above the bending groove; a pressing drive member is mounted on the top of the adapter plate; a first bending block is mounted on the bottom of the adapter plate; a third bending block is connected to the output end of the rotary drive member; the third bending block has a receiving hole for accommodating the first bending block; the receiving hole, the first bending block, and the output end of the rotary drive member are coaxially arranged; a second bending block is mounted on the top of the third bending block, the second bending block being located outside the receiving hole; the second bending block has a cylindrical bending side surface.

[0019] In one embodiment, there are two linear feeding mechanisms, which are installed side by side and spaced apart on the frame along the second direction. Each linear feeding mechanism is provided with a rotary bending mechanism at its end in the first direction.

[0020] The beneficial effects of the 2D bending mechanism provided by this invention are as follows: the pushing component pushes the flat wire in the first groove section to slide along the first direction into the second groove section; the clamping component clamps the flat wire in the second groove section and moves it along the first direction to the bending groove of the first bending block; the pressing drive component drives the pressing block to press and fix the flat wire in the bending groove; the rotating drive component drives the second bending block to rotate; the second bending block rotates until it touches the flat wire exposed in the bending groove in the first direction, and pushes the exposed flat wire to bend around the end of the bending groove; wherein, when the rotating bending mechanism bends the flat wire, the clamping component clamps the flat wire from top to bottom, ensuring that the rear end of the flat wire does not deviate or warp during the bending deformation of the front end of the flat wire, so that the bent flat wire meets the corresponding structural requirements, solving the problem that the existing 2D forming mechanism has deviation in conveying the flat wire and fails to meet the corresponding structural requirements after bending. At the same time, the pushing component and the clamping component respectively position different flat wires to achieve line separation, which is conducive to coordinated and rapid operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the 2D bending mechanism provided in an embodiment of the present invention;

[0023] Figure 2 This is another structural schematic diagram of the 2D bending mechanism provided in an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A partial schematic diagram;

[0025] Figure 4 for Figure 2 A magnified view of part A;

[0026] Figure 5 A schematic diagram of the feeding plate of the 2D bending mechanism provided in the embodiment;

[0027] Figure 6 A schematic diagram of the pusher component of the 2D bending mechanism provided in the embodiment;

[0028] Figure 7 for Figure 2 A bottom view of the 2D bending mechanism in the image;

[0029] Figure 8 for Figure 7 A partial schematic diagram;

[0030] Figure 9 for Figure 7 A magnified view of section B;

[0031] Figure 10 An exploded view of the installation of the positioning component of the 2D bending mechanism provided in the embodiment;

[0032] Figure 11 This is a schematic diagram of the clamping assembly and rotary bending mechanism of the 2D bending mechanism provided in the embodiment.

[0033] The following are the labeling elements in the figure:

[0034] 10. Flat wire; 100. Frame; 200. Linear feeding mechanism; 210. Feeding plate; 211. First groove section; 212. Second groove section; 213. First sliding hole; 214. Third sliding groove; 215. Fourth sliding groove; 216. Mounting position; 220. Feeding assembly; 221. First linear drive component; 222. First lifting drive component; 2221. First drive body; 2222. First lifting block; 2223. First sliding groove; 2224. First elastic element; 223. Feeding component; 2231. Connecting frame; 2232. Feeding plate; 2233. First mating plane; 2234. First protrusion; 2236. Second mating plane; 2235. Third mating plane; 230. Clamping assembly; 231. Second linear drive component; 232. Second lifting drive component; 23 3. Clamping component; 234. Second driving body; 235. Second lifting block; 236. Second sliding groove; 237. Second elastic element; 300. Rotary bending mechanism; 310. Rotary driving component; 311. Second bending block; 312. Third bending block; 313. Receiving hole; 320. Pressing driving component; 321. Pressing block; 330. First bending block; 331. Bending groove; 411. First guiding driving component; 412. First guiding plate; 413. First buffer; 421. Feeding driving component; 422. Feeding plate; 423. Second buffer; 500. Positioning assembly; 510. Positioning block; 520. Sliding block; 521. First mounting hole; 522. Third mounting hole; 530. Rotating block; 540. Third elastic element; 610. Adapter plate; 611. Adapter groove. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0037] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] For ease of description, we define three mutually perpendicular coordinate axes in space as the X-axis, Y-axis, and Z-axis. The direction along the X-axis is vertical, the direction along the Y-axis is horizontal, and the direction along the Z-axis is vertical. The X-axis and Y-axis are two mutually perpendicular coordinate axes on the same horizontal plane, and the Z-axis is the vertical coordinate axis. The X-axis, Y-axis, and Z-axis lie on three mutually perpendicular planes in space: the XY-plane, the YZ-plane, and the XZ-plane. The XY-plane is horizontal, and the XZ-plane and YZ-plane are both vertical, with the XZ-plane perpendicular to the YZ-plane. Movement along these three axes in space refers to movement along the three mutually perpendicular axes in space, specifically movement along the X, Y, and Z axes. Planar movement, on the other hand, refers to movement within the XY-plane.

[0041] Please refer to Figure 1 and Figure 2 This application provides a 2D bending mechanism, including a frame 100, a linear feeding mechanism 200, and a rotary bending mechanism 300. The frame 100 has a first direction X, a second direction Y, and a vertical direction Z that are perpendicular to each other.

[0042] Combination Figure 2 and Figure 3 The linear feeding mechanism 200 includes a feeding plate 210, a feeding assembly 220, and a clamping assembly 230. The feeding plate 210 is mounted on the frame 100 and has a first groove segment 211 and a second groove segment 212 sequentially distributed along a first direction (see...). Figure 5 The second groove segment 212 is located on the extension line of the first groove segment 211. The thickness direction of the feeding plate 210 is consistent with the vertical direction. The first groove segment 211 does not penetrate the feeding plate 210 in the vertical direction, while the second groove segment 212 penetrates the feeding plate 210 in the vertical direction. The pushing assembly 220 pushes the flat wire 10 from the first groove segment 211 to the second groove segment 212 along the first direction, and the clamping assembly 230 clamps the flat wire 10 from top to bottom to move it within the penetrating second groove segment 212. In other words, the first groove segment 211 provides initial guidance for the flat wire 10, and the pushing assembly 220 only needs to push along the first direction without additional correction; the second groove segment 212, in conjunction with the clamping assembly 230, can firmly fix the flat wire 10 within the second groove segment 212, avoiding positioning deviations caused by lateral offset or vertical tilting during the conveying process.

[0043] Combination Figure 2 and Figure 4The rotary bending mechanism 300 includes a rotary drive 310, a pressing drive 320, and a first bending block 330. The first bending block 330 has a bending groove 331 that abuts against the end of the second groove segment 212, and the bending groove 331 extends through the first bending block 330 along a first direction. The output end of the pressing drive 320 is connected to the pressing block 321, which presses the flat wire 10 into the bending groove 331. The output end of the rotary drive 310 is connected to a second bending block 311, which is located outside the first bending block 330. The rotary drive 310 drives the second bending block 311 to rotate, thereby bending the flat wire 10 exposed in the bending groove 331 in the first direction. During each bending, the positioning of the flat wire 10 in the vertical direction deviates, resulting in the final product's bending dimensions being out of tolerance. In other words, the middle and rear sections of the flat wire 10 in the first direction are simultaneously positioned left and right by the bending groove 331 and the second groove section 212, respectively, and are simultaneously clamped up and down by the pressing block 321 and the clamping assembly 230, respectively, to prevent the front section of the flat wire 10 from deviating before bending, resulting in inaccurate bending direction and angle, and thus the bending structure not meeting the requirements, and to prevent the middle and rear sections of the flat wire 10 from warping due to force during bending, resulting in structural deformation.

[0044] Based on this, the pushing component 220 pushes the flat wire 10 in the first groove segment 211 to slide along the first direction into the second groove segment 212. The clamping component 230 clamps the flat wire 10 in the second groove segment 212 and moves it along the first direction to the bending groove 331 of the first bending block 330. The pressing drive component 320 drives the pressing block 321 to press and fix the flat wire 10 in the bending groove 331. The rotation drive component 310 drives the second bending block 311 to rotate. The second bending block 311 rotates until it touches the flat wire 10 exposed in the bending groove 331 in the first direction, and pushes the exposed flat wire 10 to bend around the end of the bending groove 331. When the rotary bending mechanism 300 bends the flat wire 10, the clamping component 230 clamps the flat wire 10 from top to bottom to ensure that the rear end of the flat wire 10 does not deviate or warp during the bending deformation of the front end of the flat wire 10, so that the bent flat wire 10 meets the corresponding structural requirements. In addition, when the clamping assembly 230 conveys the current flat wire 10 to the bending position, the pushing assembly 220 simultaneously pushes the next flat wire 10 to the second slot section 212, achieving continuous connection and improving work efficiency.

[0045] In some embodiments, combined with Figure 1There are two linear feeding mechanisms 200, which are installed side by side and spaced apart on the frame 100 along the second direction, perpendicular to the feeding direction, without spatial interference between them. Each linear feeding mechanism 200 is equipped with a rotary bending mechanism 300 at its end in the first direction, realizing the dual-channel, dual-station simultaneous execution of the complete process of "feeding → conveying → bending" and achieving alternating material output. For example, while the first station completes bending and unloading, the second station completes bending, without waiting for an empty station, further amplifying the capacity advantage.

[0046] In some embodiments, combined with Figure 2 , Figure 3 and Figure 5 The feeding assembly 220 includes a first linear drive 221, a first lifting drive 222, and a feeding component 223. The first linear drive 221 is mounted on the frame 100. The first linear drive 221 drives the first lifting drive 222 to slide along a first direction, and the first lifting drive 222 drives the feeding component 223 to move up and down. Before feeding, the first lifting drive 222 can first drive the feeding component 223 to descend, so that the feeding component 223 can adjust its height to ensure that it can accurately abut against the rear end of the flat wire 10. After the alignment is completed, the first linear drive 221 drives the entire assembly to slide along the first direction to achieve stable feeding. After the feeding component 223 pushes the flat wire 10 from the first slot 211 to the second slot 212, the first linear drive 221 and the first lifting drive 222 reset to prepare for feeding the next flat wire 10.

[0047] In one embodiment, combined Figure 3 and Figure 6 The pusher 223 has a first protrusion 2234, which can be embedded in the first groove 211. The first protrusion 2234 is used to abut against the end of the flat wire 10 away from the rotary bending mechanism 300. Pushing against the end can ensure that the flat wire 10 slides in a translational manner along the first direction, and there will be no problem of misalignment between the front and rear sections of the flat wire 10 during the pushing process.

[0048] In one embodiment, combined with Figure 3 and Figure 6 The pusher component 223 includes a connecting frame 2231 and a pusher plate 2232. One end of the connecting frame 2231 is mounted on the first lifting drive component 222, and the other end of the connecting frame 2231 is connected to the pusher plate 2232. The lower end of the pusher plate 2232 protrudes below the connecting frame 2231. The connecting frame 2231 is hollowed out to reduce the overall weight of the pusher component 223 and reduce the load and energy consumption of the first linear drive component 221 and the first lifting drive component 222.

[0049] In one embodiment, combined with Figure 6The bottom of the pusher plate 2232 has a first contact plane 2233, which is perpendicular to the vertical direction. The flat wire 10 (especially the thin flat wire 10) has a flat cross-section. The first contact plane 2233 can form a surface contact with the top surface of the flat wire 10, which restricts the movement of the flat wire 10 in the vertical direction and ensures that the flat wire 10 slides accurately from the first groove section 211 into the second groove section 212, reducing positioning errors during the conveying process.

[0050] In one embodiment, combined with Figure 6 The first protrusion 2234 protrudes from the end of the first contact plane 2233 away from the rotary bending mechanism 300, and the side of the first protrusion 2234 near the rotary bending mechanism 300 has a second contact plane 2236. The second contact plane 2236 forms a planar abutment with the end of the flat wire 10, so that the pushing force can be evenly distributed to the contact area. The surface contact can provide more stable lateral constraint, completely avoid slippage or misalignment, and ensure that the flat wire 10 and the pusher 223 move completely synchronously.

[0051] In one embodiment, combined with Figure 6 The bottom of the first protrusion 2234 has a third contact plane 2235, which can directly contact the bottom plane of the first groove segment 211, firmly restricting the displacement of the flat line 10 in the vertical direction, completely preventing it from tilting upward or moving up and down, and ensuring that the flat line 10 always contacts the bottom of the groove and slides stably.

[0052] In some embodiments, combined with Figure 2 and Figure 3 The first lifting drive component 222 includes a first drive body 2221 and a first lifting block 2222. The first drive body 2221 has a first groove 2223 extending in a vertical direction. The first lifting block 2222 is vertically slidably installed in the first groove 2223. The first lifting block 2222 is connected to the pusher component 223 on one side in a second direction, and the first lifting block 2222 abuts against the first drive body 2221 on the other side in the second direction through a first elastic member 2224. If the first lifting block 2222 and the first drive body 2221 are rigidly connected, the contact between the first lifting block 2222 and the first drive body 2221 during start-up and stop will form a rigid collision. The instantaneous impact force may cause the pusher component 223 to collide with the groove opening of the first groove segment 211 and the end of the flat wire 10. The first elastic element 2224 can form a flexible buffer between the first lifting block 2222 and the first driving body 2221. At the same time, the first elastic element 2224 continuously applies a pre-tightening force to the first lifting block 2222 towards the pusher 223. When the size of the flat wire 10 fluctuates, the first elastic element 2224 can drive the first lifting block 2222 to make a slight displacement in the second direction through slight compression / rebound, so that the pusher 223 can always fit tightly against the side of the flat wire 10.

[0053] Specifically, in combination Figure 3 The first slide groove 2223 includes a first wide groove and a first narrow groove in the second direction. The first wide groove is farther away from the first groove segment 211 than the first narrow groove. The size of the first wide groove in the first direction is larger than the size of the first narrow groove in the first direction. That is, the projection of the first slide groove 2223 in the vertical direction is T-shaped. The shape of the first lifting block 2222 is adapted to the first slide groove 2223, so that the first lifting block 2222 cannot be separated from the first slide groove 2223 in the second direction. The T-shaped first lifting block 2222 and the opposite sides of the first wide groove form a close contact, which enhances the lifting and sliding support area.

[0054] Specifically, a first limiting structure is provided in the first slide groove 2223 to limit the vertical lifting range of the first lifting block 2222. The first limiting structure can be a limiting step or a limiting pin in the first slide groove 2223.

[0055] In some embodiments, combined with Figure 3 , Figure 7 and Figure 8 The 2D bending mechanism also includes a first guide drive 411 mounted on the feeding plate 210. The output end of the first guide drive 411 is connected to a first guide plate 412. The thickness direction of the first guide plate 412 is consistent with the second direction, and the first guide plate 412 is located on the side of the first groove segment 211 away from the main body of the pusher assembly 220. The first guide drive 411 drives the first guide plate 412 to move along the second direction to limit the flat wire 10 located in the first groove segment 211 on one side in the second direction. When the flat wire 10 falls outside the first groove segment 211 during feeding, the first guide plate 412 pushes the flat wire 10 into the first groove segment 211 along the second direction, facilitating the operation of the linear pusher mechanism 200. When the width of the flat wire 10 is less than the width of the first groove segment 211, a lateral gap will be formed in the groove. During material pushing, it is easy to deviate to one side due to uneven force, causing the pushing trajectory to deviate from the preset path, affecting the positional accuracy of subsequent entry into the second groove segment 212. Furthermore, if the flat wire 10 is laterally tilted within the first groove segment 211, the frictional resistance will be unevenly distributed, which may lead to jamming risk and local deformation. The first guide drive component 411 (such as a cylinder or electric push rod) drives the first guide plate 412 to approach the flat wire 10 until it is in contact with one side of the flat wire 10 in the second direction, pressing the flat wire 10 against the groove wall of the first groove segment 211 in the second direction, thus completely eliminating the risk of lateral deviation.

[0056] In one embodiment, combined with Figure 3 , Figure 7 and Figure 8The feeding plate 210 has a first sliding hole 213 extending along the second direction. The first guiding drive member 411 is installed at the bottom of the feeding plate 210 to prevent spatial interference with the pusher member 223 and the clamping assembly 230. This fully utilizes the installation space of the feeding plate 210 in the vertical direction and does not occupy the installation space of the feeding plate 210 in the first and second directions, which helps to reduce the size of the feeding plate 210 in the first and second directions. The bottom of the pusher plate 2232 is connected to the output end of the first guiding drive member 411, and the top of the pusher plate 2232 protrudes from the feeding plate 210 through the first sliding hole 213.

[0057] In one embodiment, the pusher plate 2232 includes a wide plate and a narrow plate. The size of the wide plate in the first direction is larger than that of the narrow plate in the first direction. The narrow plate is slidably disposed in the first sliding hole 213 and connected to the output end of the first guiding drive member 411. The wide plate is exposed on the feeding plate 210. The size of the wide plate in the first direction is larger than that of the first sliding hole 213 in the first direction. The wide plate is supported by the top surface of the feeding plate 210, which improves the stability of the pusher plate 2232. The large size of the wide plate can form a large area of ​​contact with the side of the flat wire 10, avoiding local stress concentration caused by the small contact area, and can more stably constrain the position of the flat wire 10 in the second direction, reducing lateral swaying during the pushing process.

[0058] In one embodiment, the size of the wide plate in the first direction is 2 to 5 times that of the narrow plate in the first direction, ensuring that there is sufficient contact area between the wide plate and the flat line 10, while avoiding excessive length that could cause the cantilever end to wobble during sliding.

[0059] In one embodiment, combined with Figure 3 and Figure 8 There are two pusher plates 2232, both connected to the output end of the first guide drive 411 and equidistant from it. This ensures uniform load distribution on the first guide drive 411, creating symmetrical force distribution. This counteracts eccentric torque (the torque formed by the reaction forces at the two contact points on the drive center is equal in magnitude and opposite in direction), allowing the output end of the first guide drive 411 to bear only axial force, significantly reducing internal wear. The thrust applied by the first guide drive 411 can be evenly transmitted to the flat wire 10 through the two pusher plates 2232, further increasing the limiting area and ensuring symmetrical force distribution and no eccentric torque on the flat wire 10 in the second direction.

[0060] Specifically, the feed plate 210 has a mounting position 216, which is located in the middle of the two first sliding holes 213, and the first guide drive 411 is mounted on the mounting position 216.

[0061] In one embodiment, the output end of the first material guide drive 411 is also connected to a first buffer 413, such as a hydraulic buffer, a polyurethane buffer block, or a spring buffer. The first buffer 413 is oriented towards the second direction and is used to limit and abut against the frame 100 to avoid rigid collision between the first material guide drive 411 and the frame 100, and to prevent excessive forward movement of the output end of the first material guide drive 411.

[0062] In one embodiment, combined with Figure 3 and Figure 8 The 2D bending mechanism also includes a feeding drive 421 mounted on the feeding plate 210. The output end of the feeding drive 421 is connected to a feeding plate 422, which is located on the side of the first groove segment 211 away from the second groove segment 212. The feeding drive 421 drives the feeding plate 422 to move along a first direction to push the flat wire 10 exposed in the first groove segment 211 into the first groove segment 211. When the flat wire 10 is fed, its end may be exposed in the first groove segment 211. The pusher 223 is limited by the sliding stroke of the first linear drive 221 and has difficulty abutting the end of the flat wire 10. Even if the stroke is sufficient, since the pusher 223 needs to be embedded in the first groove segment 211 and the contact area is in the middle, it is difficult to align the end of the flat wire 10 that is suspended outside the first groove segment 211. Under the push of the feeding drive 421, the feeding plate 422 can longitudinally sweep the flat wire 10 onto the feeding plate 210. If it falls outside the first groove section 211, it will be pushed into the first groove section 211 by the first guide plate 412.

[0063] In one embodiment, the feeding drive 421 is installed at the bottom of the feeding plate 210, making full use of the vertical installation space of the feeding plate 210. The thickness direction of the feeding plate 422 is consistent with the first direction, and the top of the feeding plate 422 is higher than the slot opening of the first slot segment 211.

[0064] In one embodiment, a second buffer 423, such as a hydraulic buffer, a polyurethane buffer block, or a spring buffer, is also connected to the bottom of the feed plate 210. The second buffer 423 is oriented in the second direction and is used to limit and abut against the feed plate 422 to avoid rigid collision between the feed plate 422 and the frame 100, thereby limiting the movement range of the feed plate 422.

[0065] In some embodiments, combined with Figure 2 and Figure 11The clamping assembly 230 includes a second linear drive 231, a second lifting drive 232, and two clamping members 233 spaced apart vertically. The second linear drive 231 is mounted on the frame 100 and drives the second lifting drive 232 to slide along a first direction. The clamping members 233 have clamping plates that can be embedded in the second groove segment 212. The second lifting drive 232 drives the two clamping members 233 to move up and down, so that the two clamping plates close or separate in the vertical direction. The double clamping plates apply clamping force from both the top and bottom sides, which can firmly fix the flat wire 10 at the preset height of the second groove segment 212 and accurately align it with the bending groove 331 of the rotary bending mechanism 300. This avoids vertical movement, position deviation, and bending errors caused by the conveying acceleration or bending reaction force, and can adapt to flat wires 10 of different thicknesses.

[0066] In one embodiment, combined with Figure 11 The second lifting drive component 232 includes a second drive body 234 and two second lifting blocks 235. The second drive body 234 has a second sliding groove 236 extending in a vertical direction. The second lifting blocks 235 are vertically slidably installed in the second sliding groove 236. One side of the second lifting block 235 is connected to the clamping component 233 in the second direction, and the other side of the second lifting block 235 abuts against the second drive body 234 through a second elastic member 237. If the second lifting block 235 and the second drive body 234 are rigidly connected, the contact between the second lifting block 235 and the second drive body 234 during start-up and stop will form a rigid collision. The instantaneous impact force may cause the pusher 223 to collide with the upper and lower groove openings of the second groove segment 212 and the end of the flat wire 10. The second elastic element 237 can form a flexible buffer between the second lifting block 235 and the second driving body 234. At the same time, the second lifting block 235 is cantilevered on the second driving body 234. The second elastic element 237 continuously applies a pre-tightening force to the second lifting block 235 toward the second groove section 212, ensuring that the end of the second lifting block 235 remains taut and does not deflect during the lifting process, thereby improving the clamping force and clamping height stability of the flat wire 10.

[0067] Specifically, the second slide 236 includes a second wide groove and a second narrow groove in the second direction. The second wide groove is farther away from the second groove segment 212 than the second narrow groove. The size of the second wide groove in the first direction is larger than the size of the second narrow groove in the first direction. That is, the projection of the second slide 236 in the vertical direction is T-shaped. The shape of the second lifting block 235 is adapted to the second slide 236, so that the second lifting block 235 cannot detach from the second slide 236 in the second direction. The T-shaped second lifting block 235 and the opposite sides of the second wide groove form a close contact, which enhances the lifting and sliding support area and strictly limits the attitude deviation of the second lifting block 235.

[0068] A second limiting structure is provided within the second slide groove 236 to limit the vertical lifting range of the second lifting block 235. The second limiting structure may be a limiting step or a limiting pin within the second slide groove 236.

[0069] In one embodiment, combined with Figure 7 , Figure 9 and Figure 10 The 2D bending mechanism also includes at least one pair of positioning components 500. Each pair of positioning components 500 is located on opposite sides of the second groove segment 212 in the second direction. Each positioning component 500 includes a positioning block 510, a sliding block 520, a rotating block 530, and a third elastic member 540. The positioning block 510 is fixedly mounted on the feeding plate 210. The sliding block 520 is slidably mounted on the feeding plate 210 along the second direction and is located on the side of the positioning block 510 closest to the second groove segment 212. The rotating block 530 is rotatably mounted on the sliding block 520. The two ends of the third elastic member 540 are compressed and abut against the positioning block 510 and the sliding block 520, respectively. When the flat wire 10 passes through the pair of positioning components 500 in the second groove segment 212, the flat wire 10 makes elastic contact and rolling contact with the rotating block 530 in the second direction. The elastic contact can adaptively limit the flat wire 10 of different sizes, while the rolling contact reduces friction, protects the surface of the flat wire 10, and improves the smoothness of the transfer. Each pair of positioning components forms symmetrical constraints on the flat wires 10, offsetting the bending stress of the flat wires 10 themselves, forcing them to maintain a straight posture, avoiding torsion or lateral bending, and meeting the requirements of the bending structure.

[0070] Specifically, the rotating block 530 has a cylindrical surface for rolling contact with the flat wire 10. The generatrix of the cylindrical surface is parallel to and fits the side plane of the flat wire 10, which ensures a stable contact area and provides stable support force. Furthermore, the "line contact" between the cylindrical surface and the flat wire 10 can significantly disperse contact stress compared to point / edge contact.

[0071] In one embodiment, combined Figure 7 , Figure 9 and Figure 10 Each pair of positioning components 500 is arranged adjacent to each other along the first direction, and the compression directions of the four third elastic elements 540 of the two pairs of positioning components 500 intersect at the same point within the second groove segment 212. See also Figure 9The compression directions of the four third elastic elements 540 are F1, F2, F3, and F4, respectively, converging at a single point. This means they act on the same position of the flat wire 10 within the second groove segment 212, creating a concentrated and balanced force on the flat wire 10. This makes the flat wire 10 more stable within the second groove segment 212, effectively reducing the swaying and offset of the flat wire 10 during transport, ensuring that the flat wire 10 passes accurately through the bending mechanism, and improving the bending accuracy and quality. Specifically, the elastic forces of the two pairs of positioning components 500 converge at a single point, rather than acting intermittently to form a torque. This allows the flat wire 10 to be primarily under positive pressure, controlling its natural frequency and reducing vibration caused by the bending reaction force, thus improving the positional stability of the flat wire 10. It can be understood that in other embodiments, the compression direction of the third elastic element 540 is the second direction, with the compression directions of the third elastic elements 540 of each pair of positioning components 500 facing each other.

[0072] Optionally, the third elastic element 540 is a spring, an air damper, or a rubber strip.

[0073] Specifically, in combination Figure 10 The feeding plate 210 has a third slide groove 214, and the sliding block 520 is slidably installed in the third slide groove 214. The third slide groove 214 guides and constrains the sliding direction of the sliding block 520 to prevent the sliding block 520 from being misaligned. Optionally, the length direction of the third slide groove 214 is consistent with the compression direction of the third elastic member 540.

[0074] Specifically, in combination Figure 10 The sliding block 520 has a first mounting hole 521, and the end of the third elastic member 540 is embedded in the first mounting hole 521 to prevent the third elastic member 540 from shifting, falling off, or experiencing uneven force during compression / reset. If the third elastic member 540 is not constrained by the first mounting hole 521, the radial movement of the third elastic member 540 will be transmitted to the rotating block 530 through the sliding block 520, causing the sliding block 520 to produce a slight lateral swing. This swing will cause the cylindrical surface of the rotating block 530 to no longer be parallel to the side of the flat wire 10, forming an inclined contact.

[0075] Specifically, in combination Figure 10 The positioning block 510 has a second mounting hole, and the end of the third elastic member 540 is embedded in the second mounting hole. The second mounting hole and the first mounting hole 521 of the sliding block 520 form a positioning structure for both ends of the third elastic member 540. Optionally, the second mounting hole and the first mounting hole 521 are coaxially arranged, and the third elastic member 540 is forcibly restricted in the coaxial channel, so that the axis is always consistent with the direction of force regardless of compression or reset.

[0076] Specifically, in combination Figure 10The sliding block 520 has a third mounting hole 522 that runs through the vertical direction. One end of the rotating block 530 can rotatably pass through the third mounting hole 522. The rotation axis of the rotating block 530 is forcibly constrained on the axis of the third mounting hole 522 to ensure that the rolling direction is always consistent with the conveying direction (first direction) of the flat wire 10 and there is no lateral force interference.

[0077] Optionally, a through fourth groove 215 is provided at the bottom of the third groove 214, and the bottom end of the rotating block 530 passes through the fourth groove 215 to form a clearance fit. If only the third mounting hole 522 is used for constraint, the rotating block 530 may move slightly due to equipment vibration or impact. If the movement occurs in the first direction, it will cause the contact point between the rotating block 530 and the flat wire 10 to shift back and forth, which may cause the flat wire 10 to jam or deviate during transport. The fourth groove 215 limits the movement of the rotating block 530 in the first direction. At the same time, the fourth groove 215 can support the rotation of the rotating block 530, forming an upper and lower balance with the force on the groove wall of the third mounting hole 522 above, greatly reducing the bending moment of the rotating block 530, making the force on the rotating block 530 more uniform, and alleviating the problem of local stress concentration.

[0078] Optionally, the length of the fourth slide 215 is less than the length of the third slide 214. Optionally, the length directions of the third slide 214 and the fourth slide 215 are the same.

[0079] In some embodiments, combined with Figure 2 , Figure 4 and Figure 11 The 2D bending mechanism includes an adapter plate 610 with an adapter groove 611 extending vertically through it. The adapter groove 611 extends through one end of the adapter plate 610 away from the first groove segment 211 in a first direction. The adapter groove 611 is located directly above the bending groove 331. A pressing drive 320 is mounted on the top of the adapter plate 610, and a first bending block 330 is mounted on the bottom of the adapter plate 610. The pressing drive 320 and the first bending block 330 are located on opposite sides of the adapter plate 610. The adapter groove 611 guides the pressing block 321 to align with the bending groove 331, improving the pressing accuracy and positioning accuracy of the pressing block 321 on the flat wire 10.

[0080] In one embodiment, the second bending block 311 is located outside the first bending block 330.

[0081] In one embodiment, the output end of the rotary drive 310 is connected to a third bending block 312. The third bending block 312 has a receiving hole 313 for accommodating the first bending block 330. The receiving hole 313, the first bending block 330, and the output end of the rotary drive 310 are coaxially arranged. If the center of the first bending block 330 deviates from the rotation center of the third bending block 312, the flat wire 10 is eccentrically clamped and tends to skew to one side during bending (e.g., it should be bent at 90°, but actually becomes "twisted").

[0082] In one embodiment, the second bending block 311 is mounted on top of the third bending block 312, and the second bending block 311 is located outside the receiving hole 313, thereby bending the flat wire 10 exposed outside the receiving hole 313 into shape.

[0083] In one embodiment, the second bending block 311 is detachably mounted on top of the third bending block 312. The second bending block 311 has a cylindrical bending side. The radius of the cylindrical surface can be directly designed as the standard bending radius R required for the flat wire 10. During bending, the inner side of the flat wire 10 directly conforms to the cylindrical surface for forming. The value of R is directly determined by the cylindrical surface, eliminating the need for multiple parts and perfectly matching high-precision requirements. The contact between the cylindrical surface and the flat wire 10 is an arc-shaped surface contact, with a contact area 3-5 times larger than that of a plane, effectively dispersing bending pressure. The arc-shaped contact of the cylindrical surface expands the deformation area of ​​the flat wire 10 from the initial line-surface contact to a continuous arc segment. Stress can be uniformly transmitted along the arc direction, avoiding excessive local stress. The uniform stress distribution allows for more complete plastic deformation of the flat wire 10, significantly reducing the amount of elastic recovery.

[0084] Specifically, there are two second bending blocks 311, located on different radial directions of the first bending block 330, and equidistant from the center of the first bending block 330.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A 2D bending mechanism, characterized in that, include: The frame has two perpendicular directions: a first direction, a second direction, and a vertical direction. A linear feeding mechanism includes a feeding plate, a feeding assembly, and a clamping assembly. The feeding plate is mounted on the frame and has a first groove and a second groove distributed sequentially along a first direction. The feeding assembly pushes a flat wire along the first direction from the first groove (which does not penetrate the feeding plate) to the second groove in the vertical direction. The clamping assembly clamps the flat wire vertically and moves it within the second groove (which penetrates the feeding plate) in the vertical direction. A rotary bending mechanism includes a rotary drive, a pressing drive, and a first bending block. The first bending block has a bending groove that mates with the end of a second groove segment. The output end of the pressing drive is connected to a pressing block, which presses the flat wire into the bending groove. The output end of the rotary drive is connected to a second bending block, which drives the second bending block to rotate, thereby bending the flat wire exposed in the bending groove in the first direction. A clamping assembly holds the flat wire in the second groove segment and moves it along the first direction to the bending groove of the first bending block of the rotary bending mechanism. The clamping assembly includes a second linear drive, a second lifting drive, and two clamping members spaced vertically. The second linear drive is mounted on the frame and drives the second lifting drive to slide along the first direction. Each clamping member has a clamping plate that can be embedded in the second groove segment. The second lifting drive drives the two clamping members to move up and down, so that the two clamping plates close or separate in the vertical direction. The feeding assembly includes a first linear drive, a first lifting drive, and a feeding component. The first linear drive is mounted on the frame. The first linear drive drives the first lifting drive to slide along the first direction. The first lifting drive drives the feeding component to perform lifting and lowering movements. The feeding component has a first protrusion, which is used to abut against the end of the flat wire away from the rotary bending mechanism. The first lifting drive includes a first drive body and a first lifting block. The first drive body has a first groove extending along the vertical direction. The first lifting block is vertically slidably installed in the first groove. The first lifting block is connected to the pusher on one side in the second direction. The first lifting block abuts against the first drive body on the other side in the second direction through a first elastic member.

2. The 2D bending mechanism according to claim 1, characterized in that: The pusher includes a connecting frame and a pusher plate. One end of the connecting frame is mounted on the first lifting drive component, and the other end of the connecting frame is connected to the pusher plate. The lower end of the pusher plate protrudes below the connecting frame. The bottom of the pusher plate has a first contact plane, which is perpendicular to the vertical direction. A first protrusion protrudes from the end of the first contact plane away from the rotary bending mechanism. The side of the first protrusion near the rotary bending mechanism has a second contact plane, and the bottom of the first protrusion has a third contact plane.

3. The 2D bending mechanism according to claim 1, characterized in that: The 2D bending mechanism also includes a feeding drive unit installed on the feeding plate. The output end of the feeding drive unit is connected to the feeding plate. The feeding plate is located on the side of the first groove segment away from the second groove segment. The feeding drive unit drives the feeding plate to move along the first direction to push the flat wire exposed in the first groove segment into the first groove segment. And / or, the 2D bending mechanism further includes a first material guiding drive mounted on the feeding plate, the output end of the first material guiding drive being connected to a first material guiding plate, the thickness direction of the first material guiding plate being consistent with the second direction, and the first material guiding plate being located on the side of the first groove segment away from the main body portion of the pushing assembly; the first material guiding drive drives the first material guiding plate to move along the second direction to limit the flat wire located in the first groove segment on one side of the second direction.

4. The 2D bending mechanism according to claim 1, characterized in that: The second lifting drive includes a second drive body and two second lifting blocks. The second drive body has a second slide groove extending along the vertical direction. The second lifting blocks are vertically slidably mounted in the second slide groove. One side of the second lifting block in the second direction is connected to the clamping member, and the other side of the second lifting block in the second direction abuts against the second drive body through a second elastic member.

5. The 2D bending mechanism according to claim 1, characterized in that: The 2D bending mechanism further includes at least one pair of positioning components. Each pair of positioning components is located on opposite sides of the second groove segment in the second direction. The positioning component includes a positioning block, a sliding block, a rotating block, and a third elastic element. The positioning block is fixedly installed on the feeding plate. The sliding block is slidably installed on the feeding plate along the second direction and is located on the side of the positioning block closer to the second groove segment. The rotating block is rotatably installed on the sliding block. The two ends of the third elastic element are compressed and abut against the positioning block and the sliding block, respectively.

6. The 2D bending mechanism according to claim 1, characterized in that: The 2D bending mechanism includes an adapter plate with an adapter groove extending along the vertical direction, the adapter groove being located directly above the bending groove. A downward pressing drive is mounted on the top of the adapter plate, and a first bending block is mounted on the bottom of the adapter plate. A third bending block is connected to the output end of the rotary drive. The third bending block has a receiving hole for accommodating the first bending block, and the receiving hole, the first bending block, and the output end of the rotary drive are coaxially arranged. A second bending block is mounted on the top of the third bending block, located outside the receiving hole. The second bending block has a cylindrical bending side surface.

7. The 2D bending mechanism according to any one of claims 1 to 6, characterized in that: The number of linear feeding mechanisms is two, and the two linear feeding mechanisms are installed side by side and spaced apart on the frame along the second direction. Each linear feeding mechanism is equipped with a rotary bending mechanism at its end in the first direction.

Images