Flat wire forming device

Abstract

The present application relates to motor manufacturing technical field, provide a kind of flat wire forming device, including carousel assembly and stamping assembly, carousel assembly includes carousel body and carousel drive part, carousel body is provided with multiple support assemblies along circumference, support assembly is used to place forming die, forming die includes elastically connected upper die and lower die, for placing flat wire between upper die and lower die, carousel drive part is located below carousel body, and carousel body is driven to rotate around vertical direction, stamping assembly includes stamping support and stamping drive part, stamping support covers one side of carousel body, and the other side of carousel body is open at top, to provide the taking and placing of the flat wire of forming die;Stamping drive part is installed to stamping support, and located above carousel body, and the output end of stamping drive part provides stamping force to the upper die rotated to its below, so that upper die and lower die close.One side of forming die carries out flat wire stamping, and the other side of forming die carries out the taking and placing of flat wire, and the forming efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor manufacturing, in particular to a flat wire forming device. BACKGROUND

[0002] In the production and manufacturing process of flat wire motors, flat wire forming is an essential process. The fixed-length straight flat copper wire needs to be first processed into a 2D-shaped U-shaped line, and then the U-shaped line is processed into a 3D-shaped hairpin coil with a specific angle.

[0003] In a kind of full-automatic mould conversion device of flat wire hairpin disclosed in Chinese patent application CN117559741A, the upper surface of the lower plate is fixedly connected with the side support, the side support is fixedly connected with the lower frame body, the upper surface of the lower frame body is fixedly connected with the outer sleeve, the bearing is arranged in the outer sleeve and rolls, the inner ring of the bearing rolls and is provided with a main shaft, the upper end of the main shaft is provided with a driven gear, the upper end of the driven gear is fixedly connected with a turntable, the upper end of the turntable is provided with a plurality of hairpin forming molds, the lower frame body is provided with a motor base plate, the middle of the motor base plate is provided with a speed reducer, the upper end of the speed reducer is provided with a driving gear, the upper end of the hairpin forming mold is provided with a copper block, the upper end of the copper block is fixedly connected with a connecting block, the upper part of the upper plate is connected with an electric cylinder, and the lower end of the electric cylinder is provided with an electric cylinder connecting block. A plurality of hairpin forming molds are installed on the turntable, the servo motor drives the speed reducer to rotate the hairpin forming mold to the forming station, each hairpin forming mold can realize the forming of 2D and 3D hairpin coils, and the remaining hairpin forming molds are slidably connected with the sliding plate through the copper block. The pneumatic clamping jaw of the front end wire feeding device sends the straight line segment of the de-painted and cut flat wire into the hairpin forming mold, and the corresponding hairpin forming mold is automatically taken out by the wire taking clamp jaw of the wire taking device.

[0004] However, in the full-automatic mould conversion device of flat wire hairpin disclosed in Chinese patent application CN117559741A, a plurality of hairpin forming molds are fixedly connected with the upper end of the turntable, and the working forming mold is rotated to the fixed station. The flat wire is placed, punched and discharged in sequence, and there is a technical problem of low forming efficiency. SUMMARY

[0005] The present application aims to provide a flat wire forming device, which solves the technical problem of low forming efficiency of the existing flat wire forming device.

[0006] The application provides a flat wire forming device, comprising a rotating disc assembly and a stamping assembly, the rotating disc assembly comprises a rotating disc body and a rotating disc driving element, the rotating disc body is provided with a plurality of support assemblies in the circumferential direction, the support assemblies are used for placing forming molds, the forming molds comprise elastically connected upper molds and lower molds, the upper molds and the lower molds are used for placing flat wires, the rotating disc driving element is located below the rotating disc body and drives the rotating disc body to rotate around the vertical direction, the stamping assembly comprises a stamping support and a stamping driving element, the stamping support covers one side of the rotating disc body, and the other side of the rotating disc body is open at the top, so that the flat wires of the forming molds are taken and placed; the stamping driving element is installed on the stamping support and located above the rotating disc body, and the output end of the stamping driving element provides a stamping force to the upper mold rotating below the output end, so that the upper mold and the lower mold are closed.

[0007] The flat wire forming device provided by the application has the beneficial effects that the rotating disc driving element drives the rotating disc body to rotate around the vertical direction, so that the forming molds on the plurality of support assemblies are sequentially rotated to below the output end of the stamping driving element, the output end of the stamping driving element presses the upper mold below the output end, the upper mold and the lower mold are closed, and the flat wire between the upper mold and the lower mold is 3D stamped and formed. When the output end of the stamping driving element stamps the forming mold on one side, the forming mold on the other side can synchronously take and place the flat wire, the forming efficiency is improved, and the technical problem of low forming efficiency of the existing flat wire forming device is solved. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0009] Figure 1 The structure schematic diagram of the flat wire forming device provided by the embodiment of the application is shown in the figure.

[0010] Figure 2 Another structure schematic diagram of the flat wire forming device provided by the embodiment of the application is shown in the figure.

[0011] Figure 3 The structure schematic diagram of the support assembly of the flat wire forming device is shown in the figure.

[0012] Figure 4 The working schematic diagram of the forming mold of the flat wire forming device is shown in the figure.

[0013] Figure 5 Another perspective view of the forming mold of the flat wire forming device is shown in the figure.

[0014] Figure 6 An exploded view of a forming die of the flat wire forming device;

[0015] Figure 7 A structural schematic view of a rack, a linear pushing mechanism and a rotary bending mechanism of the flat wire forming device provided by the embodiment of the present application;

[0016] Figure 8 A partial schematic view of Figure 7 ;

[0017] Figure 9 A partial enlarged view of A of Figure 7 ;

[0018] Figure 10 A structural schematic view of a feeding plate of the linear pushing mechanism provided by the embodiment;

[0019] Figure 11 An installation exploded schematic view of a positioning assembly of the flat wire forming device provided by the embodiment;

[0020] Figure 12 A working schematic view of a clamping assembly and a rotary bending mechanism of the flat wire forming device provided by the embodiment.

[0021] In the drawings, various reference signs represent:

[0022] 10, flat wire; 20, photoelectric sensor; 30, vision sensor; 100, rack; 200, straight line pushing mechanism; 210, feeding plate; 211, first slot section; 212, second slot section; 213, first sliding hole; 214, third sliding slot; 215, fourth sliding slot; 216, mounting position; 220, pushing assembly; 221, first linear driving piece; 222, first lifting driving piece; 2221, first driving body; 2222, first lifting block; 2223, first sliding slot; 2224, first elastic piece; 223, pushing piece; 2231, connecting frame; 2232, pushing plate; 230, clamping assembly; 231, second linear driving piece; 232, second lifting driving piece; 233, clamping piece; 234, second driving body; 235, second lifting block; 236, second sliding slot; 237, second elastic piece; 300, rotary bending mechanism; 310, rotary driving piece; 311, second bending block; 312, third bending block; 313, accommodating hole; 320, pressing driving piece; 321, pressing block; 330, first bending block; 331, bending slot; 411, first material guiding driving piece; 412, first material guiding plate; 500, positioning assembly; 510, positioning block; 520, sliding block; 521, first mounting hole; 522, third mounting hole; 530, rotary block; 540, third elastic piece; 610, adapter plate; 611, adapter slot; 700, rotary disc assembly; 710, rotary disc body; 720, rotary disc driving piece; 730, supporting assembly; 731, supporting plate; 732, first positioning column; 733, second positioning column; 734, third positioning column; 735, supporting elastic piece; 800, stamping assembly; 810, stamping support; 820, stamping driving piece; 900, forming die; 910, upper die; 911, upper plate; 912, first upper block; 913, second upper block; 914, forming protrusion; 915, first inclined surface; 920, lower die; 921, second positioning hole; 922, lower plate; 923, first lower block; 924, second lower block; 925, forming slot; 926, sliding elastic piece; 927, sliding guide piece; 928, sliding slot; 929, second inclined surface; 930, first limiting column; 940, second limiting column; 950, third limiting column; 960, sliding sleeve; 970, die closing elastic piece; 980, supporting block. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0024] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0025] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are for the purpose of facilitating the description of the application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0026] In addition, the terms "first", "second", and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] For the convenience of description, three coordinate axes perpendicular to each other in space are defined as X-axis, Y-axis and Z-axis, at the same time, the direction along the X-axis is longitudinal, the direction along the Y-axis is transverse, and the direction along the Z-axis is vertical; wherein the X-axis and the Y-axis are two coordinate axes perpendicular to each other in the same horizontal plane, and the Z-axis is a coordinate axis in the vertical direction; the X-axis, the Y-axis and the Z-axis are perpendicular to each other in space, and the three planes are XY plane, YZ plane and XZ plane, wherein the XY plane is a horizontal plane, the XZ plane and the YZ plane are both vertical planes, and the XZ plane and the YZ plane are perpendicular. The three axes in space are X-axis, Y-axis and Z-axis, moving along the three axes in space means moving along the three axes perpendicular to each other in space, and specifically moving along the X-axis, the Y-axis and the Z-axis in space; while plane movement is movement in the XY plane.

[0029] Reference is made to Figure 1The flat wire forming device provided in the application comprises a rotating disc assembly 700 and a stamping assembly 800. The rotating disc assembly 700 comprises a rotating disc body 710 and a rotating disc driving member 720. The rotating disc body 710 is provided with a plurality of support assemblies 730 in the circumferential direction, and the support assemblies 730 are used for placing forming molds 900. The forming mold 900 comprises an elastically connected upper mold 910 and a lower mold 920, and the flat wire 10 is placed between the upper mold 910 and the lower mold 920. The rotating disc driving member 720 is located below the rotating disc body 710 and drives the rotating disc body 710 to rotate around the vertical direction Z. The stamping assembly 800 comprises a stamping support 810 and a stamping driving member 820. The stamping support 810 covers one side of the rotating disc body 710, and the other side of the rotating disc body 710 is open at the top to facilitate the taking and placing of the flat wire 10 of the forming mold 900. The stamping driving member 820 is installed on the stamping support 810 and located above the rotating disc body 710. The output end of the stamping driving member 820 provides a stamping force to the upper mold 910 located below it, so that the upper mold 910 and the lower mold 920 are folded.

[0030] The rotating disc driving member 720 drives the rotating disc body 710 to rotate around the vertical direction Z, so that the forming molds 900 on the plurality of support assemblies 730 are sequentially rotated to below the output end of the stamping driving member 820. The output end of the stamping driving member 820 presses the upper mold 910 located below it, and the upper mold 910 and the lower mold 920 are folded, so that the flat wire 10 located between the upper mold 910 and the lower mold 920 is 3D stamped and formed. When the output end of the stamping driving member 820 stamps the forming mold 900 on one side, the forming mold 900 on the other side can simultaneously take and place the flat wire 10, thereby improving the forming efficiency.

[0031] In some embodiments, in combination with Figure 1 and Figure 2 The flat wire forming device comprises a rack 100, and the rack 100 has a first direction X, a second direction Y and a vertical direction Z perpendicular to each other. The rotating disc body 710 is rotatably installed on the rack 100, and the rotating disc driving member 720 and the stamping support 810 are fixedly installed on the rack 100. The stamping support 810 spans the rotating disc body 710 in the second direction Y. The stamping support 810 covers one side of the rotating disc body 710 in the first direction X, and the other side of the rotating disc body 710 in the first direction X is not covered by the stamping support 810, thereby facilitating the taking and placing of the flat wire 10.

[0032] In some embodiments, in combination with Figure 1The flat wire forming device includes photoelectric sensors 20, the number of photoelectric sensors 20 is the same as the number of support assemblies 730, and one-to-one correspondence. The photoelectric sensor 20 is fixedly installed on the turntable body 710, rotates with the turntable body 710, and remains relatively stationary with the corresponding support assembly 730. Each photoelectric sensor 20 is used to detect whether the upper die 910 and the lower die 920 on the corresponding support assembly 730 are closed. When the upper die 910 is lowered and closed, the detection light of the photoelectric sensor 20 is blocked. When the upper die 910 and the lower die 920 are separated, the detection light of the photoelectric sensor 20 is not blocked. Based on this, whether the upper die 910 under the stamping driving piece 820 is lowered and closed, that is, whether the flat wire 10 is completed stamping, is detected by the photoelectric sensor 20. Only if the stamping is completed, the output end of the stamping driving piece 820 is raised, the turntable body 710 rotates, and there is no need to wait for the elastic reset of the upper die 910 in place. During the rotation process, the upper die 910 is automatically elastically reset, and the flat wire forming device can further improve the forming efficiency; whether the upper die 910 of the forming die 900 located on the other side is elastically reset is detected by the photoelectric sensor 20. If the elastic reset is performed, the flat wire 10 can be taken and placed.

[0033] In some embodiments, in combination with Figure 1 The flat wire forming device includes a vision sensor 30, the number of vision sensors 30 is the same as the number of support assemblies 730, and one-to-one correspondence. The vision sensor 30 is fixedly installed on the rack 100 and does not rotate with the turntable body 710. The vision sensor 30 is located below the turntable body 710 and is used to detect whether the support assembly 730 is rotated into position. For example, the vision sensor 30 located below the stamping driving piece 820 is used to detect whether the corresponding forming die 900 is rotated directly below the stamping driving piece 820, so as to allow the stamping driving piece 820 to start the downward pressing action, thereby avoiding the stamping force application position error caused by the forming die 900 not being in place. For example, the vision sensor 30 of the taking and placing position confirms that the forming die 900 is in place, and then allows the flat wire 10 to be taken and placed, thereby avoiding the flat wire 10 taking and placing position deviation caused by the forming die 900 deviation.

[0034] In some embodiments, in combination with Figure 1 and Figure 3The support assembly 730 comprises a support plate 731 and a first positioning column 732, the turntable body 710 has a first positioning hole, the lower mold 920 has a second positioning hole 921, the bottom of the support plate 731 has a second positioning column 733 rotatably embedded in the first positioning hole, and the embedded cooperation realizes the positioning of the support assembly 730 on the turntable body 710. The rotatable cooperation realizes the initial installation angle adjustment of the support assembly 730. The first positioning column 732 is installed on the top of the support plate 731, the first positioning column 732 is rotatably embedded in the second positioning hole 921, the embedded cooperation realizes the positioning of the forming mold 900 on the support assembly 730, and the rotatable cooperation has a certain gap allowance, which can avoid the clamping of the forming mold 900 during positioning and installation due to the machining error.

[0035] Specifically, the first positioning column 732 is located outside the second positioning column 733, that is, the weight of the support assembly 730 is transmitted to the turntable body 710 through the second positioning column 733 in the middle, and the weight of the forming mold 900 is supported on the support assembly 730 through the first positioning column 732 outside the second positioning column 733. Since the forming mold 900 bears the stamping force, if only the central positioning column is supported, the mold center of gravity is easy to deviate or the stamping force and the central positioning column exist torque, which causes the support assembly 730 to overturn. The first positioning column 732 distributed on the periphery can disperse the load of the forming mold 900 and the forming stamping force to multiple circumferential fulcrums of the support assembly 730, which balances the eccentric load of the forming mold 900 and limits the tilting trend of the support assembly 730, greatly improving the stability of the overall structure.

[0036] Specifically, the number of the first positioning posts 732 is at least two to prevent the forming die 900 from rotating relative to the support assembly 730. Optionally, the distance from the cylinder axis of all the first positioning posts 732 to the cylinder axis of the second positioning posts 733 is equal, ensuring that the positioning torque provided by each first positioning post 732 is uniformly distributed. Optionally, the distance from the cylinder axis of the first positioning posts 732 to the cylinder axis of the second positioning posts 733 is greater than the radius of the second positioning posts 733, i.e., each first positioning post 732 is located on the same circle and is arranged in a concentric circle with the second positioning posts 733, the first positioning posts 732 and the second positioning posts 733 are staggered with each other in the vertical projection of the support plate 731, facilitating the installation of the first positioning posts 732 on the support plate 731, and the entire support plate 731 is uniformly stressed without warping. Optionally, the radius of the first positioning posts 732 is 1 / 5-1 / 2 of the radius of the second positioning posts 733. Optionally, the number of the first positioning posts 732 is two, and the two first positioning posts 732 are located on the same two opposite sides of the second positioning posts 733, which on the one hand uniformly stresses and balances the torque, and on the other hand limits the rotation of the forming die 900 relative to the support assembly 730 with the smallest number of first positioning posts 732, without the difficulty of embedding all the first positioning posts 732 due to manufacturing errors because of the large number of first positioning posts 732.

[0037] In one embodiment, in combination with Figure 1 and Figure 3 The support assembly 730 further comprises a plurality of third positioning posts 734 arranged along the edge of the support plate 731, and the turntable body 710 has third positioning holes for gap-fitting with the third positioning posts 734. The plurality of third positioning posts 734 form a multi-point position constraint at the outer peripheral edge of the support plate 731, which on the one hand prevents the support plate 731 from rotating on the turntable body 710 about the second positioning posts 733, and on the other hand, the multi-point position fitting can more accurately define the relative position of the support plate 731 and the turntable body 710, avoiding local tilting of the support plate 731 and ensuring the parallelism when the upper die 910 and the lower die 920 are folded. Specifically, the number of the third positioning posts 734 is four, and the four third positioning posts 734 are distributed at the four corners of the support plate 731.

[0038] In one embodiment, the distance from the cylindrical axis of all third positioning columns 734 to the cylindrical axis of the second positioning column 733 is equal, ensuring that the force arm of each third positioning column 734 relative to the second positioning column 733 is the same, which is conducive to uniform stress of each third positioning column 734. Specifically, the support assembly 730 is positioned and supported on the turntable body 710 by the second positioning column 733 and the third positioning column 734, the forming mold 900 is positioned and supported on the support assembly 730 by the first positioning column 732, and the distance from the cylindrical axis of the third positioning column 734 to the cylindrical axis of the second positioning column 733 is greater than the distance from the cylindrical axis of the first positioning column 732 to the cylindrical axis of the second positioning column 733. Then, the force arm of the load of the forming mold 900 is smaller than the force arm of the support force exerted by the third positioning column 734, and the difference in force arm ensures that the anti-overturning moment is always greater than the overturning moment. Moreover, the load of the forming mold 900 falls between the second positioning column 733 and the third positioning column 734, and is more evenly transmitted to the second positioning column 733 and the third positioning column 734, and the force transmission path is shorter.

[0039] In one embodiment, the hole diameter of the first positioning hole is greater than the outer diameter of the second positioning column 733, and the difference between the two is a first diameter difference. The hole diameter of the third positioning hole is slightly greater than or equal to the outer diameter of the third positioning column 734, and the difference between the two is a second diameter difference. The first diameter difference is greater than the second diameter difference. The bottom of the second positioning column 733 is lower than the bottom of the third positioning column 734, and the second positioning column 733 is embedded into the turntable body 710 before the third positioning column 734. Based on this, the first positioning hole is used as a coarse positioning hole, and the third positioning hole is used as a fine positioning hole, realizing the active embedding of the second positioning column 733 and the first positioning hole, and further realizing the preliminary positioning of the support assembly 730, while reserving an adjustment margin for the subsequent fine positioning of the third positioning column 734. In addition, it is conducive to the rapid alignment between the third positioning hole and the third positioning column 734.

[0040] In one embodiment, the hole diameter φa of the first positioning hole is 110% to 130% of the outer diameter φb of the second positioning column 733. On the one hand, φa is greater than or equal to 120%*φb, so as to ensure the active embedding between the second positioning column 733 and the first positioning hole and realize the preliminary positioning of the support assembly 730 on the turntable body 710 in the case of tolerance adaptation, which is conducive to reducing the assembly difficulty; on the other hand, φa is less than or equal to 130%*φb, which limits the relative displacement between the second positioning column 733 and the first positioning hole, thereby controlling the floating amount of the third positioning column 734 and reducing the difficulty of the subsequent abutment between the third positioning column 734 and the third positioning hole, which is conducive to the rapid embedding between the third positioning column 734 and the third positioning hole and improves the assembly efficiency.

[0041] In some embodiments, in combination with Figure 1 and Figure 3The support assembly 730 further comprises a plurality of support elastic members 735 circumferentially spaced along the second positioning column 733, two ends of the support elastic members 735 abutting the rotary disc body 710 and the support plate 731 respectively. When the flat wire 10 is 3D formed, the stamping driving member 820 will exert a transient impact force on the forming die 900, and the support elastic members 735 absorb part of the impact energy by compressive deformation, avoiding direct rigid transmission of the impact force to the rigid second positioning column 733 and the third positioning column 734.

[0042] In one embodiment, the compression directions of all the support elastic members 735 converge directly above the barycenter of the support plate 731, the action point of the resultant force of the elastic support force and the mass barycenter of the support plate 731 are located on the same median line, that is, the direction of the resultant force of the elastic force points to the barycenter, and no overturning occurs, the horizontal component forces cancel each other out, completely avoiding local stress concentration caused by uneven gravity distribution, forming an ideal coaxial force system, eliminating the stress deviation from the root, and at the same time ensuring that the direction of the resultant force borne by the support plate 731 is on the median line, and no tilting occurs, ensuring that the support plate 731 and the lower die 920 supported thereby are horizontal, the posture of the lower die 920 is stable, and the 3D forming dimensional deviation rate of the flat wire 10 is greatly reduced.

[0043] In one embodiment, in combination with Figure 1 and Figure 3 , all the support elastic members 735 are located on the same concentric circle with the cylindrical shaft of the second positioning column 733 as the center, which can make the elastic support force completely symmetrical on the circumference with the second positioning column 733 as the center, avoiding uneven stress on the support plate 731, the size and direction of all the radial elastic components are symmetrical along the circumference, only the resultant force in the direction of the median line is reserved, and the support plate 731 and the lower die 920 are ensured to have no any horizontal movement. Especially when the forming die 900 is tilted or the lower die 920 vibrates, since the resultant force of the support assembly 730 is in the direction of the barycenter median line, the influence of the change in the inclination angle is small, the natural frequency of the system is controlled, and the risk of resonance is reduced. Optionally, the support elastic members 735 are springs, air dampers or rubber strips.

[0044] In some embodiments, in combination with Figure 4 , Figure 5 and Figure 6The lower mold 920 comprises a lower plate 922, a first lower block 923 and a second lower block 924, the first lower block 923 is fixedly installed on the lower plate 922, and the second lower block 924 is slidingly installed on the lower plate 922. The second lower block 924 is slidingly close to the first lower block 923, and the top portions of both blocks enclose a forming groove 925. The first lower block 923 is close to one side of the second lower block 924, and the first lower block 923 and the second lower block 924 enclose a part of the forming groove 925. The other two opposite sides of the first lower block 923 have another part of the forming groove 925. The upper mold 910 comprises an upper plate 911, a first upper block 912 and a second upper block 913 which are fixedly installed on the upper plate 911. The first upper block 912 has a forming protrusion 914 for adapting to the forming groove 925, and the second upper block 913 abuts and pushes the second lower block 924 to slide close to the first lower block 923. When the forming mold 900 works, the upper mold 910 is pressed down, the second upper block 913 contacts the second lower block 924 and pushes the second lower block 924 to slide close to the first lower block 923, so that the shape and size of the forming groove 925 are more accurately adapted to the 3D shape requirement of the flat wire 10, facilitating accurate forming of the flat wire 10. The flat wire 10 not only bears the vertical stamping force of the first lower block 923, but also bears the horizontal extrusion force of the second lower block 924, so that the flat wire 10 is subjected to relatively uniform pressure at each part during the forming process, avoiding defects such as deformation and cracks of the product caused by uneven pressure.

[0045] In one embodiment, in combination with Figure 6 The lower mold 920 further comprises a sliding elastic member 926, and two ends of the sliding elastic member 926 abut against the first lower block 923 and the second lower block 924 respectively. When the stamping driving member 820 drives the upper mold 910 to rise, the pushing force of the second upper block 913 on the second lower block 924 disappears, the sliding elastic member 926 rebounds by itself to push the second lower block 924 to automatically move away from the first lower block 923, so that the forming groove 925 returns to the initial open state, facilitating taking out the formed flat wire 10 and putting in new flat wire 10 raw materials. When the second lower block 924 is quickly close to the first lower block 923 by the second upper block 913 during the stamping stage, the sliding elastic member 926 gradually buffers the impact force by itself compression, which not only protects the mold fitting surface, but also greatly reduces the collision noise and vibration.

[0046] In one embodiment, in combination with Figure 5 and Figure 6The lower plate 922 is fixedly installed with a sliding guide 927, and the bottom of the second lower block 924 is provided with a sliding groove 928, and the sliding guide 927 is slidingly embedded in the sliding groove 928. The cooperation of the sliding guide 927 and the sliding groove 928 provides accurate guidance for the sliding of the second lower block 924, ensures that the second lower block 924 can move along the predetermined direction in the sliding process, reduces the deviation and shaking in the sliding process, can keep a stable motion state, helps to ensure the dimensional accuracy and shape accuracy of the forming groove 925, and thus improves the forming quality of the product.

[0047] In one embodiment, the second upper block 913 is provided with a first inclined surface 915 which is inclined from bottom to top towards the direction close to the first lower block 923. When the upper die 910 moves vertically downward, the first inclined surface 915 of the second upper block 913 will be in contact with the second lower block 924, and the inclined structure of the first inclined surface 915 will decompose the vertical downward stamping component force into a horizontal component force directed towards the first lower block 923. This component force can directly push the second lower block 924 to slide horizontally along the sliding guide 927 without additional horizontal driving devices, and finally enclose the forming groove 925 with the first lower block 923. When pushing the second lower block 924 to slide, the horizontal component force of the first inclined surface 915 is always directed towards the direction of the first lower block 923, and with the downward pressing of the upper die 910, the direction of the component force will be ensured to slide along the preset path of the sliding guide 927 through the geometric constraint of the first inclined surface 915, avoiding the deviation or jamming of the second lower block 924 due to uneven sliding resistance, and ensuring the center degree and dimensional consistency of the flat wire 10.

[0048] In one embodiment, in combination with Figure 5 and Figure 6 The second lower block 924 is provided with a second inclined surface 929 which is inclined from bottom to top towards the direction close to the first lower block 923. When the second upper block 913 is pressed downward, the second upper block 913 abuts against the second inclined surface 929 of the second lower block 924, and the vertical downward stamping component force is decomposed into a vertical component force and a horizontal component force along the second inclined surface 929. The horizontal component force is always directed towards the direction of the first lower block 923, and with the downward pressing of the upper die 910, the direction of the horizontal component force will be ensured to slide along the preset path of the sliding guide 927 through the geometric constraint of the second inclined surface 929, avoiding the deviation or jamming of the second lower block 924 due to uneven sliding resistance, and ensuring the center degree and dimensional consistency of the flat wire 10.

[0049] In one embodiment, the lower die 920 further comprises a support block 980 fixedly installed on the lower plate 922, the support block 980 is located on the side of the second lower block 924 away from the first lower block 923, the top surface of the support block 980 is planar, the bottom surface of the second upper block 913 is planar, and the top surface of the support surface is in contact with the bottom surface of the second upper block 913 when the upper die 910 and the lower die 920 are closed to position, which can provide accurate positioning for the closing of the upper die 910 and the lower die 920, ensure the relative position accuracy between the upper die 910 and the lower die 920, help to ensure the dimensional accuracy and shape accuracy of the forming groove 925, thereby improving the forming quality of the product.

[0050] In one embodiment, the upper plate 911 is provided with a first limiting column 930, and the lower plate 922 is provided with a second limiting column 940, the first limiting column 930 and the second limiting column 940 are vertically opposite, so that the upper die 910 stops moving downward when the first limiting column 930 abuts against the second limiting column 940, avoiding excessive or insufficient stamping. When the mold is closed, if the instantaneous impact force of the upper die 910 on the lower die 920 is completely borne by the forming components (such as the first upper block 912, the first lower block 923, the second upper block 913, and the second lower block 924), it is easy to cause the core forming surface to wear and deform, and when the first limiting column 930 and the second limiting column 940 abut against each other, most of the stamping impact force will be transmitted to the upper plate 911 and the lower plate 922 through the first limiting column 930 and the second limiting column 940, rather than being concentrated on the forming protrusion 914 and the forming groove 925.

[0051] In one embodiment, the lower plate 922 is fixedly installed with a third limiting column 950, the upper plate 911 is installed with a sliding sleeve 960 which is slidingly sleeved with the third limiting column 950, the third limiting column 950 is sleeved with a mold closing elastic member 970, and the mold closing elastic member 970 abuts against the sliding sleeve 960. The sliding sleeve connection of the third limiting column 950 and the sliding sleeve 960 provides a vertical guide reference for the up-and-down movement of the upper die 910. The mold closing elastic member 970 abuts against the sliding sleeve 960, absorbs the impact force at the moment of mold closing through elastic deformation, and avoids rigid collision damage. The mold closing elastic member 970 is usually a compression spring.

[0052] In one embodiment, in combination with Figure 2 and Figure 7 , the flat wire forming device further comprises a straight line pushing mechanism 200 and a rotary bending mechanism 300.

[0053] In combination with Figure 8 and Figure 10The linear pushing mechanism 200 comprises a feeding plate 210, a pushing assembly 220 and a clamping assembly 230. The feeding plate 210 is installed on the rack 100 and has a first slot section 211 and a second slot section 212 arranged in the first direction. The second slot section 212 is located on the extension line of the first slot section 211. The thickness direction of the feeding plate 210 is consistent with the vertical direction. The first slot section 211 does not penetrate the feeding plate 210 in the vertical direction, and the second slot section 212 penetrates the feeding plate 210 in the vertical direction. The pushing assembly 220 pushes the flat wire 10 to slide from the first slot section 211 to the second slot section 212 in the first direction, and the clamping assembly 230 clamps the flat wire 10 up and down to move in the penetrated second slot section 212. In other words, the first slot section 211 provides initial guidance for the flat wire 10, and the pushing assembly 220 only needs to push in the first direction without additional correction; the second slot section 212 cooperates with the up and down clamping of the clamping assembly 230 to firmly fix the flat wire 10 in the second slot section 212, avoiding positioning deviation caused by left and right deviation and upward and downward warping during conveying.

[0054] In combination Figure 7 and Figure 9 The rotary bending mechanism 300 comprises a rotary driving member 310, a pressing driving member 320 and a first bending block 330. The first bending block 330 has a bending slot 331 that is in butt joint with the end of the second slot section 212, and the bending slot 331 penetrates the first bending block 330 in the first direction. The output end of the pressing driving member 320 is connected with a pressing block 321 that presses the flat wire 10 on the bending slot 331, and the output end of the rotary driving member 310 is connected with a second bending block 311 that is located outside the first bending block 330. The rotary driving member 310 drives the second bending block 311 to rotate to push the flat wire 10 exposed to the bending slot 331 in the first direction to bend. Each time the flat wire 10 is bent, the positioning of the flat wire 10 in the vertical direction deviates, and the bending size of the final product is 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 slot 331 and the second slot section 212, and are simultaneously clamped up and down by the pressing block 321 and the clamping assembly 230, respectively, to avoid the position of the front section of the flat wire 10 deviating before bending, resulting in inaccurate bending direction and angle, and further causing the bending structure to not meet the requirements, and avoiding the middle and rear sections of the flat wire 10 from warping due to stress during bending, resulting in structural deformation.

[0055] Based on this, the pushing assembly 220 pushes the flat wire 10 in the first slot section 211 to slide in the first direction into the second slot section 212, the clamping assembly 230 clamps the flat wire 10 in the second slot section 212 to move in the first direction to the bending groove 331 of the first bending block 330, the downward driving member 320 drives the downward block 321 to press and fix the flat wire 10 in the bending groove 331, and the rotary driving member 310 drives the second bending block 311 to rotate. The second bending block 311 rotates to touch the flat wire 10 exposed in the first direction from the bending groove 331, and pushes the exposed flat wire 10 to bend around the port of the bending groove 331. Wherein, when the rotary bending mechanism 300 bends the flat wire 10, the clamping assembly 230 clamps the flat wire 10 up and down, which ensures that the rear end of the flat wire 10 does not deviate or deform 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 synchronously pushes the next flat wire 10 to the second slot section 212, realizes continuous connection, and improves the forming efficiency.

[0056] In one embodiment, in combination Figure 2 , the rotary disc assembly 700 is located at one end of the rotary bending mechanism 300 away from the linear pushing assembly 200 in the first direction X, and the clamping assembly 230 is further used to move the flat wire 10 along the second slot section 212 to between the upper die 910 and the lower die 920. The rotary bending mechanism 300 performs 2D forming on the flat wire 10, and then the clamping assembly 230 directly moves the flat wire 10 to the forming die 900 in the first direction X for 3D forming. The device directly feeds the forming die 900 by using the clamping assembly 230, without additional clamping jaws or robots, simplifies the forming process, and synchronously performs 2D forming and 3D forming in steps, in the same device, improving the forming efficiency.

[0057] Optionally, the height of the flat wire 10 on the rotary bending mechanism 300 is consistent with the top height of the lower die 920, so that the flat wire 10 is directly transferred from the rotary bending mechanism 300 to the lower die 920 in the first direction X without height adjustment. In other words, the bending groove 331 and the forming groove 925 are flush in height.

[0058] In some embodiments, in combination Figure 7 and Figure 8The pushing assembly 220 comprises a first linear driving member 221, a first lifting driving member 222, and a pushing member 223. The first linear driving member 221 is installed on the rack 100, and drives the first lifting driving member 222 to slide in the first direction. The first lifting driving member 222 drives the pushing member 223 to perform lifting movement. Before pushing, the first lifting driving member 222 can first drive the pushing member 223 to descend, so as to adjust the height of the pushing member 223 and ensure that the pushing member 223 can abut against the rear end of the flat wire 10 accurately. After the alignment is completed, the first linear driving member 221 drives the whole to slide in the first direction, so as to realize stable pushing. After the pushing member 223 pushes the flat wire 10 from the first slot section 211 to the second slot section 212, the first linear driving member 221 and the first lifting driving member 222 are reset, so as to prepare for pushing of the next flat wire 10.

[0059] In one of the embodiments, in combination with Figure 7 and Figure 8 The pushing member 223 comprises a connecting frame 2231 and a pushing plate 2232. One end of the connecting frame 2231 is installed on the first lifting driving member 222, and the other end of the connecting frame 2231 is connected with the pushing plate 2232. The lower end of the pushing plate 2232 protrudes below the connecting frame 2231. The connecting frame 2231 is hollow, so as to reduce the overall weight of the pushing member 223 and reduce the load and energy consumption of the first linear driving member 221 and the first lifting driving member 222.

[0060] In some embodiments, in combination with Figure 7 and Figure 8 The first lifting driving member 222 comprises a first driving body 2221 and a first lifting block 2222. The first driving body 2221 has a first sliding groove 2223 extending in the vertical direction. The first lifting block 2222 is vertically slidingly installed on the first sliding groove 2223. One side of the first lifting block 2222 in the second direction is connected with the pushing member 223. The other side of the first lifting block 2222 in the second direction is abutted against the first driving body 2221 through a first elastic member 2224. If the first lifting block 2222 and the first driving body 2221 are rigidly connected, the contact between the first lifting block 2222 and the first driving body 2221 when starting and stopping will form a rigid collision, and the instantaneous impact force may cause the pushing member 223 to knock against the slot of the first slot section 211 and the end of the flat wire 10. The first elastic member 2224 can form flexible buffering between the first lifting block 2222 and the first driving body 2221. At the same time, the first elastic member 2224 continuously applies a pre-tightening force to the first lifting block 2222 towards the side of the pushing member 223. When the size of the flat wire 10 fluctuates, the first elastic member 2224 can be slightly compressed / expanded, so as to drive the first lifting block 2222 to make a slight displacement in the second direction, so that the pushing member 223 can always closely fit the side of the flat wire 10.

[0061] Specifically, in combination withFigure 3 The first sliding groove 2223 comprises a first wide slot and a first narrow slot in the second direction, the first wide slot is farther away from the first slot section 211 than the first narrow slot, the size of the first wide slot in the first direction is greater than the size of the first narrow slot in the first direction, that is, the projection of the first sliding groove 2223 in the vertical direction is T-shaped, the shape of the first lifting block 2222 is matched with the first sliding groove 2223, so that the first lifting block 2222 cannot be separated from the first sliding groove 2223 along the second direction, and the opposite sides of the first wide slot and the T-shaped first lifting block 2222 form a close contact, thereby enhancing the lifting and sliding support area.

[0062] Specifically, the first sliding groove 2223 is provided with a first limiting structure to limit the lifting range of the first lifting block 2222 in the vertical direction. The first limiting structure can be a limiting step or a limiting pin in the first sliding groove 2223.

[0063] In some embodiments, in combination with Figure 7 and Figure 8 The flat wire forming device further comprises a first material guiding driving member 411 mounted on the feeding plate 210, and the output end of the first material guiding driving member 411 is connected with a first material guiding plate 412, the thickness direction of the first material guiding plate 412 is consistent with the second direction, and the first material guiding plate 412 is located on the side of the main body portion of the first slot section 211 away from the material pushing assembly 220. The first material guiding driving member 411 drives the first material guiding plate 412 to move along the second direction to form a limit on one side of the flat wire 10 located in the first slot section 211 in the second direction. When the flat wire 10 is fed and falls outside the first slot section 211, the first material guiding plate 412 pushes the flat wire 10 along the second direction to fall into the first slot section 211, facilitating the operation of the linear material pushing mechanism 200. When the width of the flat wire 10 is less than the width of the first slot section 211, a transverse gap will be formed in the slot, and the pushing will be easy to deviate to one side due to uneven stress, resulting in deviation of the pushing track from the preset path, affecting the position accuracy of the subsequent entry into the second slot section 212, and if there is a transverse inclination of the flat wire 10 in the first slot section 211, the frictional resistance will be unevenly distributed, which will cause the risk of jamming and local deformation. The first material guiding driving member 411 (such as a pneumatic cylinder or an electric push rod) drives the first material guiding plate 412 to approach the flat wire 10 until the first material guiding plate 412 is in close contact with one side of the flat wire 10 in the second direction, and the flat wire 10 is pressed on the slot wall of the first slot section 211 in the second direction, thereby completely eliminating the risk of transverse deviation.

[0064] In one of the embodiments, in combination with Figure 7 , Figure 8 and Figure 10The feeding plate 210 has a first sliding hole 213 extending in the second direction. The first material guiding driving member 411 is installed at the bottom of the feeding plate 210, which prevents spatial interference with the pushing member 223 and the material clamping assembly 230, fully utilizes the installation space of the feeding plate 210 in the vertical direction, does not occupy the installation space of the feeding plate 210 in the first direction and the second direction, and is beneficial to reducing the size of the feeding plate 210 in the first direction and the second direction. The bottom of the pushing plate 2232 is connected with the output end of the first material guiding driving member 411, and the top of the pushing plate 2232 is exposed to the feeding plate 210 through the first sliding hole 213.

[0065] In one embodiment, the pushing plate 2232 includes a wide plate and a narrow plate. The size of the wide plate in the first direction is greater than that of the narrow plate in the first direction. The narrow plate is slidingly arranged in the first sliding hole 213 and connected with the output end of the first material guiding driving member 411. The wide plate is exposed to the feeding plate 210. The size of the wide plate in the first direction is greater 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 pushing plate 2232. The large size of the wide plate can form a large area of adhesion with the side surface of the flat wire 10, avoid local stress concentration caused by too small contact area, and more stably constrain the position of the flat wire 10 in the second direction, reducing the lateral shaking in the pushing process.

[0066] In one embodiment, the size of the wide plate in the first direction is 2-5 times the size of the narrow plate in the first direction, which ensures that there is enough adhesion area between the wide plate and the flat wire 10, and avoids the cantilever end shaking in the sliding process due to too long size.

[0067] In one embodiment, in combination with Figure 8 The number of the pushing plate 2232 is two. Both of the two pushing plates 2232 are connected with the output end of the first material guiding driving member 411 and have equal distance from the output end of the first material guiding driving member 411. The load of the first material guiding driving member 411 is uniform, which can offset the eccentric moment, so that the output end of the first material guiding driving member 411 only bears axial force, greatly reducing the internal wear. The pushing force applied by the first material guiding driving member 411 can be uniformly transmitted to the flat wire 10 through the two pushing plates 2232, further increasing the limiting area, so that the stress of the flat wire 10 in the second direction is symmetrical and has no eccentric moment.

[0068] Specifically, the feeding plate 210 has an installation position 216 located at the middle of the two first sliding holes 213. The first material guiding driving member 411 is installed at the installation position 216.

[0069] In some embodiments, in combination with Figure 12The 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.

[0070] In one embodiment, combined Figure 12 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.

[0071] 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.

[0072] The second limiting structure is a limiting step or a limiting pin in the second sliding groove 236.

[0073] In one of the embodiments, the flat wire forming device further comprises at least one pair of positioning assemblies 500, each pair of the positioning assemblies 500 is located on opposite sides of the second groove segment 212 in the second direction, and each positioning assembly 500 comprises a positioning block 510, a sliding block 520, a rotating block 530 and a third elastic member 540. Figure 7 Figure 11 In one of the embodiments, the flat wire forming device further comprises at least one pair of positioning assemblies 500, each pair of the positioning assemblies 500 is located on opposite sides of the second groove segment 212 in the second direction, and each positioning assembly 500 comprises a positioning block 510, a sliding block 520, a rotating block 530 and a third elastic member 540.

[0074] 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 surface of the flat wire 10, which is stable in contact area and provides stable support force, and the "line contact" between the cylindrical surface and the flat wire 10 can greatly disperse the contact stress compared with point / edge surface contact.

[0075] Optionally, the third elastic member 540 is a spring, an air damper or a rubber strip.

[0076] Specifically, in combination with the above, Figure 11 The feeding plate 210 has a third sliding groove 214, and the sliding block 520 is slidingly installed in the third sliding groove 214, which guides and restricts the sliding direction of the sliding block 520 to avoid dislocation of the sliding block 520. Optionally, the length direction of the third sliding groove 214 is consistent with the compression direction of the third elastic member 540.

[0077] Specifically, in combination with the above, Figure 11 ​The sliding block 520 has a first mounting hole 521, and an end of the third elastic member 540 is embedded in the first mounting hole 521, so as to avoid the third elastic member 540 from being deviated, falling off or unevenly stressed during compression / resetting. If the third elastic member 540 is not constrained by the first mounting hole 521, the third elastic member 540 will move radially, and the movement will be transmitted to the rotating block 530 through the sliding block 520, which will cause the sliding block 520 to slightly swing laterally, and the swing will make the cylindrical surface of the rotating block 530 no longer parallel to the side surface of the flat wire 10, and the cylindrical surface of the rotating block 530 will form an inclined contact with the flat wire 10.

[0078] Specifically, in combination with Figure 11 The positioning block 510 has a second mounting hole, and an 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 two-end positioning structure of the third elastic member 540. Optionally, the second mounting hole is coaxially arranged with the first mounting hole 521, and the third elastic member 540 is forced to be limited in the coaxial hole, and the axis is always consistent with the stress direction during compression or resetting.

[0079] Specifically, in combination with Figure 11 The sliding block 520 has a third mounting hole 522 penetrating in the vertical direction, and one end of the rotating block 530 is rotatably arranged through the third mounting hole 522. The rotating shaft of the rotating block 530 is forced to be constrained on the axis of the third mounting hole 522, so as to ensure that the rolling direction is always consistent with the moving direction (the first direction) of the flat wire 10, and there is no lateral force interference.

[0080] Optionally, the third sliding groove 214 is provided with a penetrating fourth sliding groove 215, and the bottom end of the rotating block 530 is arranged through the fourth sliding groove 215 to form a clearance fit. If the rotating block 530 is slightly deviated due to equipment vibration or stress impact only by the constraint of the third mounting hole 522, the deviation will cause the contact point between the rotating block 530 and the flat wire 10 to be deviated forward and backward, which may cause the flat wire 10 to be stuck or deviated during moving. The fourth sliding groove 215 limits the deviation of the rotating block 530 in the first direction. At the same time, the fourth sliding groove 215 can support the rotation of the rotating block 530, and the stress of the upper wall of the third mounting hole 522 is balanced, so as to greatly reduce the bending moment of the rotating block 530, the stress of the rotating block 530 is more uniform, and the local stress concentration problem is relieved.

[0081] Optionally, the length of the fourth sliding groove 215 is less than the length of the third sliding groove 214. Optionally, the length directions of the third sliding groove 214 and the fourth sliding groove 215 are consistent.

[0082] In some embodiments, in combination with Figure 9 and Figure 12The flat wire forming device includes an adapter plate 610 having an adapter slot 611 extending through in the vertical direction. The adapter slot 611 can extend through the adapter plate 610 in the first direction away from one end of the first slot section 211. The adapter slot 611 is located directly above the bending slot 331, the pressing driving member 320 is installed on the top of the adapter plate 610, and the first bending block 330 is installed on the bottom of the adapter plate 610. The pressing driving member 320 and the first bending block 330 are respectively located on both sides of the adapter plate 610, and the adapter slot 611 can guide the pressing block 321 to align with the bending slot 331, thereby improving the pressing accuracy and positioning accuracy of the pressing block 321 on the flat wire 10.

[0083] In one embodiment, the second bending block 311 is located outside the first bending block 330.

[0084] In one embodiment, the output end of the rotating driving member 310 is connected with a third bending block 312, the third bending block 312 has a receiving hole 313 for accommodating the first bending block 330, and the receiving hole 313, the first bending block 330 and the output end of the rotating driving member 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 is easy to be skewed to one side during bending.

[0085] In one embodiment, the second bending block 311 is installed on the top of the third bending block 312, and the second bending block 311 is located outside the receiving hole 313, so as to bend and form the flat wire 10 exposed outside the receiving hole 313.

[0086] In one embodiment, the second bending block 311 is detachably installed on the top of the third bending block 312, and the second bending block 311 has a cylindrical bending side surface. The radius of the cylindrical surface can be directly designed as the standard bending radius R required by the flat wire 10, and the inside of the flat wire 10 directly matches the cylindrical surface during bending, and the R value is directly determined by the cylindrical surface, without relying on the cooperation of multiple parts, and completely matches the high-precision requirement. The contact between the cylindrical surface and the flat wire 10 is an arc surface contact, and the contact area is 3-5 times larger than that of a plane, which can effectively disperse the bending pressure. The arc contact of the cylindrical surface expands the deformation area of the flat wire 10 from a line-plane contact at the beginning of bending to a continuous circular arc segment, and the stress can be uniformly transmitted along the circular arc direction, avoiding excessive local stress. Uniform stress distribution makes the plastic deformation of the flat wire 10 more sufficient, and the elastic recovery amount is greatly reduced.

[0087] Specifically, the number of the second bending block 311 is two, which are located at different radial directions of the first bending block 330 and have equal distances from the center of the first bending block 330.

[0088] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flat wire forming device, characterized in that: The device includes a turntable assembly and a stamping assembly. The turntable assembly includes a turntable body and a turntable drive. The turntable body has multiple support components arranged circumferentially, which are used to place a forming mold. The forming mold includes an upper mold and a lower mold that are elastically connected. A flat wire is placed between the upper mold and the lower mold. The turntable drive is located below the turntable body and drives the turntable body to rotate about a vertical direction. The stamping assembly includes a stamping bracket and a stamping drive. The stamping bracket covers one side of the turntable body, and the top of the other side of the turntable body is open to allow the flat wire of the forming mold to be placed and removed. The stamping drive is mounted on the stamping bracket and located above the turntable body. The output end of the stamping drive provides stamping force to the upper mold that has rotated below it, so that the upper mold and the lower mold close together. The support assembly includes a support plate and a first positioning post. The turntable body has a first positioning hole, the lower mold has a second positioning hole, and the bottom of the support plate has a second positioning post that is rotatably embedded in the first positioning hole. The first positioning post is installed on the top of the support plate and is rotatably embedded in the second positioning hole. The first positioning post is located on the outer periphery of the second positioning post. The support assembly further includes a plurality of third positioning posts arranged along the edge of the support plate, and the turntable body has a third positioning hole for clearance fitting with the third positioning posts; The number of the first positioning pins is at least two, and the distance from the cylindrical axis of all the first positioning pins to the cylindrical axis of the second positioning pins is equal and greater than the radius of the second positioning pins; The distance from the cylindrical axis of all the third positioning posts to the cylindrical axis of the second positioning post is equal and greater than the distance from the cylindrical axis of the first positioning post to the cylindrical axis of the second positioning post.

2. The flat wire forming device according to claim 1, characterized in that: The support assembly also includes a plurality of support elastic elements spaced apart circumferentially along the second positioning post, with the two ends of the support elastic elements respectively abutting against the turntable body and the support plate.

3. The flat wire forming device according to claim 2, characterized in that: The compression directions of all the aforementioned support elastic elements converge directly above the center of gravity of the support plate; And / or, all of the said support elastic elements are located on the same concentric circle centered on the cylindrical axis of the second positioning post.

4. The flat wire forming device according to claim 1, characterized in that: The lower mold includes a lower plate, a first lower block, and a second lower block. The first lower block is fixedly installed on the lower plate, and the second lower block is slidably installed on the lower plate. The second lower block slides close to the first lower block, and the tops of the two blocks enclose a forming groove. The upper mold includes an upper plate, a first upper block, and a second upper block, both fixedly installed on the upper plate. The first upper block has a forming protrusion adapted to the forming groove. The second upper block abuts against and pushes the second lower block to slide close to the first lower block.

5. The flat wire forming apparatus according to claim 4, characterized in that: The lower mold also includes a sliding elastic element, the two ends of which abut against the first lower block and the second lower block respectively; And / or, the lower plate is fixedly installed with a sliding guide, and the bottom of the second lower block has a sliding groove, in which the sliding guide is slidably embedded.

6. The flat wire forming apparatus according to claim 4, characterized in that: The second upper block has a first inclined surface that slopes upward toward the first lower block; and / or, the second lower block has a second inclined surface that slopes upward toward the first lower block.

7. The flat wire forming apparatus according to claim 4, characterized in that: The upper plate is provided with a first limiting post, and the lower plate is provided with a second limiting post. The first limiting post and the second limiting post are directly opposite each other so that the upper mold stops moving downward when the first limiting post abuts against the second limiting post. And / or, the lower plate is fixedly installed with a third limiting post, the upper plate is installed with a sliding sleeve that is slidably sleeved with the third limiting post, the third limiting post is sleeved with a mold closing elastic element, and the mold closing elastic element abuts against the sliding sleeve.

8. The flat wire forming apparatus according to any one of claims 1 to 7, characterized in that, The flat wire forming device further includes a frame, a linear feeding mechanism and a rotary bending mechanism. The frame has a first direction, a second direction and a vertical direction that are perpendicular to each other. The turntable body is rotatably mounted on the frame. The turntable drive and the stamping bracket are fixedly mounted on the frame. The 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 the 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. The 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 the 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. The turntable assembly is located at one end of the rotary bending mechanism away from the linear feeding mechanism in the first direction, and the clamping assembly is also used to move the flat wire along the second groove between the upper die and the lower die.

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