Wire forming device

Abstract

The application relates to the technical field of motor manufacturing, and provides a wire forming device which comprises a rack, a tool changing mechanism and a 2D bending mechanism. The tool changing mechanism comprises a tool changing slide, a switching driving piece, a punching driving assembly and a plurality of tools. The tool changing slide is installed on the rack. The tools are installed on the tool changing slide in a second direction and are spaced apart. The tools have punching channels extending in a first direction and through which flat wires pass. The switching driving piece drives the tools to slide along the tool changing slide. The punching driving assembly comprises a punching support and a punching driving piece. The punching support is installed on the tool changing slide. The punching driving piece is installed on the top of the punching support and directly above the tool changing slide. The punching support has a wire outlet groove which is through in the first direction and is the same height as the punching channels. The 2D bending mechanism is installed on the rack and is downstream of the wire outlet groove. The plurality of tools are transversely switched along the tool changing slide, share the same punching station, and a plurality of independent punching devices are omitted, so that the device size is reduced.

Description

TECHNICAL FIELD

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

[0002] The motor with rectangular cross-section wire in stator winding is called flat wire motor (also called Pin motor). Unlike ordinary winding motor, the flat wire motor is not first wound into a specific coil and then embedded into the stator slot by machine, but the flat wire is pre-formed, inserted into the stator slot, and then formed and welded at one end or both ends to form the entire stator winding. Flat wire is beneficial to the improvement of motor slot fill rate. The slot fill rate of general round wire motor is about 50%, while the slot fill rate of flat wire motor can reach more than 70%. According to the winding form of flat wire motor, it can be divided into Hair-pin winding (also called hairpin winding), I-Pin winding (also called I-shaped clamp winding), wave winding, etc. The hairpin flat wire winding is named because of its shape similar to a hairpin. The advantage is that only one end needs to be welded, and the disadvantage is that the preparation is relatively complex. After the hairpin is formed, the hairpin wire is inserted into the stator core, and finally assembled into a finished motor stator through expansion, wire twisting, welding and impregnation equipment. The process of hairpin forming machine mainly includes unwinding, peeling, fixed-length cutting and hairpin forming.

[0003] Chinese patent CN222966859U discloses a flat wire punching device, which comprises a mounting frame, a punching knife seat, a punching knife located above the punching knife seat, and a driving assembly for relatively moving the punching knife and the punching knife seat to cut the flat wire located therebetween; the driving assembly comprises: a driving shaft rotatably supported on the mounting frame about a first axis, the driving shaft comprising a first adapter and a second adapter; a first connecting rod which is supported on the mounting frame in a liftable manner, the punching knife being fixed on the first connecting rod; a first rotary adapter arm, one end of which is rotatably connected to the first adapter about a second axis, and the first rotary adapter arm can be driven by the driving shaft to drive the first connecting rod to move up and down, the other end of the first rotary adapter arm being pivotally connected to the first connecting rod, the second axis being parallel to and spaced apart from the first axis. The flat wire punching device is convenient to maintain, and can reduce maintenance cost and production cost.

[0004] However, as the hairpin products are more and more, the requirements for the types of flat wire cutting are more and more, which leads to the repeated feeding and discharging of the flat wire to realize the processing of different cutting in different punching devices, and further leads to the large size of the wire forming device. SUMMARY

[0005] The present application aims to provide a wire forming device, which aims to solve the technical problem of the large size of the existing wire forming device.

[0006] The application provides a wire forming device, comprising a rack, a tool changing mechanism and a 2D bending mechanism, the rack has a first direction, a second direction and a vertical direction which are perpendicular to each other; the tool changing mechanism comprises a tool changing slide, a switching driving member, a punching driving assembly and a plurality of tools, the tool changing slide is installed on the rack, the tools are installed on the tool changing slide in the second direction and are spaced apart, the tools have punching channels which extend in the first direction and through which flat wires pass; the switching driving member drives the tools to slide along the tool changing slide; the punching driving assembly comprises a punching support and a punching driving member, the punching support is installed on the tool changing slide, the punching driving member is installed on the top of the punching support and directly above the tool changing slide, the punching support has wire outlet grooves which are through in the first direction and are in the same height as the punching channels; the 2D bending mechanism is installed on the rack and is downstream of the wire outlet grooves.

[0007] The wire forming device provided by the application has the beneficial effects that: the flat wires are fed into the wire outlet grooves in the first direction, when different punching is needed to form different cutouts, the switching driving member drives different tools to slide in the second direction to the punching assembly, the punching driving member applies a punching force to the tool to cut the flat wire and form corresponding cutouts, and the flat wires enter the 2D bending mechanism downstream through the wire outlet grooves for 2D forming, wherein the plurality of tools are transversely switched along the tool changing slide, share the same punching station, and multiple independent punching devices are saved, thereby reducing the size of the device, solving the technical problem of large size of the existing wire forming device, reducing the feeding and discharging time and turnover time, and improving the production efficiency. 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 are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0009] Figure 1 A structural schematic diagram of the wire forming device provided by the embodiment of the application;

[0010] Figure 2 A structural schematic diagram of the tool changing mechanism of the wire forming device provided by the embodiment;

[0011] Figure 3 An internal structural schematic diagram of the tool changing mechanism provided by the embodiment;

[0012] Figure 4 A structural schematic diagram of the punching transmission shaft of the tool changing mechanism provided by the embodiment;

[0013] Figure 5 Structure diagram of the tool of the tool changing mechanism provided for the embodiment;

[0014] Figure 6 Exploded view of the tool of the tool changing mechanism provided for the embodiment;

[0015] Figure 7 Structure diagram of the 2D bending mechanism of the wire forming device provided for the embodiment;

[0016] Figure 8 Partial view of the 2D bending mechanism provided for the embodiment; Figure 7

[0017] Figure 9 Partial enlarged view of A of the 2D bending mechanism provided for the embodiment; Figure 7

[0018] Figure 10 Structure diagram of the feeding plate of the 2D bending mechanism provided for the embodiment;

[0019] Figure 11 Installation exploded diagram of the positioning assembly of the 2D bending mechanism provided for the embodiment;

[0020] Figure 12 Working diagram of the clamping assembly and the rotary bending mechanism of the 2D bending mechanism provided for the embodiment.

[0021] Figure 13 Structure diagram of the forming mechanism of the wire forming device provided for the embodiment;

[0022] Figure 14 Bottom view of the forming mechanism in the Figure 13

[0023] Working diagram of the forming mechanism; Figure 15

[0024] Structure diagram of a forming die of the forming mechanism; Figure 16

[0025] Another view of the forming die provided for the embodiment; Figure 17 Figure 16 Exploded view of the forming die in the

[0026] Figure 18 Figure 16

[0027] In the drawings, various reference signs represent:

[0028] ​​​​​10, flat wire; 20, 2D bending mechanism; 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 member; 222, first lifting driving member; 2221, first driving body; 2222, first lifting block; 2223, first sliding slot; 2224, first elastic member; 223, pushing member; 2231, connecting frame; 2232, pushing plate; 230, clamping assembly; 231, second linear driving member; 232, second lifting driving member; 233, clamping member; 234, second driving body; 235, second lifting block; 236, second sliding slot; 237, second elastic member; 300, rotary bending mechanism; 310, rotary driving member; 311, second bending block; 312, third bending block; 313, accommodating hole; 320, downward pressing driving member; 321, downward pressing block; 330, first bending block; 331, bending slot; 411, first material guiding driving member; 412, first material guiding plate; 420, positioning assembly; 421, positioning block; 422, sliding block; 423, first mounting hole; 424, third mounting hole; 425, rotary block; 426, third elastic member; 430, adapter plate; 431, adapter slot.

[0029] 500, tool changing mechanism; 510, tool changing sliding channel; 511, sliding plate; 512, first auxiliary member; 514, left and right rolling members; 515, third waste outlet; 516, upper rolling member; 520, switching driving member; 521, first screw; 530, punching and breaking driving assembly; 531, punching and breaking support; 532, punching and breaking driving member; 533, wire outlet slot; 534, punching and breaking transmission shaft; 535, first shaft section; 536, second shaft section; 537, third shaft section; 538, sliding limiting block; 540, tool; 541, punching and breaking channel; 542, upper tool die; 5421, upper tool plate; 5422, tool body; 5423, first upper tool block; 5424, second separation slot; 5425, second upper tool block; 5426, fixed tool opening; 543, lower tool die; 5431, lower tool plate; 5432, first lower tool block; 5433, second lower tool block; 5434, first separation slot; 5435, tool inlet opening; 545, second waste outlet; 546, first elastic sleeve; 547, second elastic sleeve; 551, first punching and breaking block; 552, second punching and breaking block; 553, angle sensor; 554, angle trigger; 561, feeding support; 563, waste pipe; 571, discharge detection sensor;

[0030] 610, switching support; 620, sliding rail; 621, support bottom plate; 6211, long slot; 622, sliding support block; 631, first rolling support; 632, second rolling support; 640, limiting side plate; 650, in-place detection sensor; 700, die changing driving assembly; 710, die changing driving piece; 720, pushing rod; 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; 922, lower plate; 923, first lower block; 924, second lower block; 925, forming groove; 926, sliding elastic piece; 927, sliding guide piece; 928, sliding groove; 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, support block. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein 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 should not be understood as limiting the present application.

[0032] Reference is made to Figure 1 , Figure 2 and Figure 3 The wire forming device provided by the embodiments includes a rack 100, a tool changing mechanism 500, and a 2D bending mechanism 20. The rack 100 has a first direction X, a second direction Y, and a vertical direction Z perpendicular to each other. The tool changing mechanism 500 includes a tool changing slide 510, a switching driving piece 520, a punch breaking driving assembly 530, and a plurality of tools 540. The tool changing slide 510 is installed on the rack 100, the tools 540 are installed on the tool changing slide 510 in a sliding manner along the second direction Y and are spaced apart, and the tools 540 have punch breaking channels 541 extending along the first direction X for the flat wire 10 to pass through. The switching driving piece 520 drives the tools 540 to slide along the tool changing slide 510. The punch breaking driving assembly 530 includes a punch breaking support 531 and a punch breaking driving piece 532. The punch breaking support 531 is installed on the tool changing slide 510, the punch breaking driving piece 532 is installed on the top of the punch breaking support 531 and is located directly above the tool changing slide 510, and the punch breaking support 531 has wire outlet slots 533 penetrating along the first direction X and being the same height as the punch breaking channels 541. The 2D bending mechanism 20 is installed on the rack 100 and is located downstream of the wire outlet slots 533.

[0033] The linear flat wire 10 is aligned with the wire outlet groove 533 and the same linear breaking channel 541 in the first direction X. When different breaking shapes are needed, the switching drive 520 drives different cutters 540 to slide to the breaking assembly in the second direction Y, and the breaking drive 532 applies a breaking force to the cutter 540 to cut the flat wire 10 to form corresponding breaking shapes, and then the flat wire 10 enters the 2D bending mechanism 20 to be bent into a U shape. The plurality of cutters 540 are transversely switched along the cutter changing slide 510, share the same breaking station, save multiple independent breaking devices, reduce the size of the device, solve the technical problem of large size of the existing wire forming device, reduce the feeding and discharging and turnover time, and improve the production efficiency.

[0034] In some embodiments, in combination with Figure 2 and Figure 3 The cutter changing mechanism 500 further comprises a sliding plate 511 slidably installed on the cutter changing slide 510, and all the cutters 540 are arranged at intervals in the second direction Y and installed on the sliding plate 511. The switching drive 520 only needs to drive one sliding plate 511 to realize the position switching of all the cutters 540, which has high integration and is beneficial to size reduction.

[0035] In one embodiment, the cutter changing mechanism 500 further comprises a first screw 521 rotatably installed on the breaking bracket 531, and the switching drive 520 and the first screw 521 are arranged at intervals in the vertical direction Z to reduce the floor area of the cutter changing mechanism 500 in the horizontal plane. The switching drive 520 drives the first screw 521 to rotate through the first belt, and the sliding plate 511 is threadedly sleeved with the first screw 521 through the first auxiliary member 512 to realize accurate adjustment of the displacement of the sliding plate 511. Specifically, the first screw 521 and the switching drive 520 are arranged in parallel and installed on the breaking bracket 531. The output shaft of the switching drive 520 is sleeved with a first gear, the end of the first screw 521 is sleeved with a second gear, and the first belt is sleeved with the first gear and the second gear to realize transmission. Specifically, one end of the first auxiliary member 512 is connected to one end of the sliding plate 511 in the second direction Y, and the other end is threadedly sleeved with the first screw 521 through a nut.

[0036] In some embodiments, the breaking drive 532 can be a lifting motor or a pneumatic cylinder, and the output end thereof moves up and down to directly provide a breaking force to the cutter 540.

[0037] In other embodiments, in combination with Figure 3 and Figure 4The tool changing mechanism 500 further comprises a punching transmission shaft 534, which comprises a first shaft segment 535, a second shaft segment 536 and a third shaft segment 537 connected in sequence along the second direction Y, and can reasonably avoid other components of the tool changing mechanism 500 (such as the sliding plate 511 and the first screw rod 521) in space, further compressing the overall volume of the punching driving assembly 530. The first shaft segment 535, the third shaft segment 537 and the punching driving member 532 are coaxially arranged, the first shaft segment 535 is connected to the rotating output end of the punching driving member 532, and the second shaft segment 536 is eccentrically arranged with the first shaft segment 535. Therefore, when the first shaft segment 535 rotates, the horizontally placed second shaft segment 536 rotates eccentrically and generates periodic vertical Z direction displacement, which can directly or indirectly push the tool 540 to move up and down, meeting the action requirement of the punching cutting. Optionally, the first shaft segment 535 and the second shaft segment 536 are rotatably installed on the punching support 531 through bearings.

[0038] Specifically, the tool changing mechanism 500 further comprises a first punching block 551 and a second punching block 552, the first punching block 551 is rotatably sleeved on the upper end of the second shaft segment 536, and the second punching block 552 is rotatably sleeved on the lower end of the first punching block 551 through a punching pin shaft. During the transmission of the punching force, the punching pin shaft can play a certain buffering and adjusting role, reduce the vibration and impact in the punching process, and make the punching process more stable. The second punching block 552 is slidingly installed on the punching support 531 along the vertical direction Z, converts the eccentric rotation of the first punching block 551 into the linear motion of the second punching block 552 along the vertical direction Z, so as to push the tool 540 to punch the flat wire 10. The second punching block 552 is detachably connected with the tool 540, facilitating the connection and cooperation with different tools 540 to realize different cutting of the flat wire 10. Optionally, the punching driving assembly 530 further comprises a sliding limiting block 538 fixedly installed on the punching support 531, and the second punching block 552 slidingly cooperates with the sliding limiting block 538 to guide the second punching block 552 to move up and down.

[0039] In some embodiments, in combination with Figure 3 The punching support 531 is installed with an angle sensor 553, and the end of the third shaft segment 537 is connected with an angle trigger 554. The angle trigger 554 rotates with the third shaft segment 537 and passes through and triggers the angle sensor 553, that is, the angle trigger 554 rotates one round to trigger the angle sensor 553 once, so as to determine that the punching transmission shaft 534 rotates one round to complete one punching of the tool 540. Optionally, the angle sensor 553 is a photoelectric sensor, and the angle trigger 554 is a light-shielding piece.

[0040] In some embodiments, in combination with Figure 2 、 Figure 5 and Figure 6The cutter 540 comprises an upper cutter die 542 and a lower cutter die 543 which are elastically connected. Optionally, a first elastic sleeve 546 is arranged between the upper cutter plate 5421 and the lower cutter plate 5431 to achieve elastic connection between the upper cutter plate 5421 and the lower cutter plate 5431. The lower cutter die 543 comprises the lower cutter plate 5431, a first lower cutter block 5432 and a second lower cutter block 5433. The first lower cutter block 5432 is fixedly installed on the lower cutter plate 5431. The first lower cutter block 5432 has a first separation groove 5434 which penetrates in the second direction Y. The second lower cutter block 5433 is slidingly installed in the first separation groove 5434 and can be adjusted in position in the second direction Y. The second lower cutter block 5433 can be conveniently replaced with an appropriate second lower cutter block 5433, and has good versatility. The second lower cutter block 5433 has an entry knife opening 5435. The entry knife opening 5435 is in communication with the punching-off channel 541. Specifically, the punching-off channel 541 is located in the upper cutter die 542, and the punching-off channel 541 is located directly above the entry knife opening 5435. The upper cutter die 542 comprises the upper cutter plate 5421 and a cutter body 5422 which is installed on the upper cutter plate 5421. The cutter body 5422 can be embedded in the entry knife opening 5435. When the punching-off driving member 532 provides a punching-off to the upper cutter plate 5421, the elastic connection structure can buffer the impact force at the moment when the upper cutter die 542 and the lower cutter die 543 are in contact. The cutter body 5422 passes through the punching-off channel 541 and enters the entry knife opening 5435, thereby ensuring that the flat wire 10 is sheared.

[0041] In some embodiments, in combination with Figure 3 、 Figure 5 and Figure 6 , a first upper cutter block 5423 is installed on the top of the upper cutter plate 5421. The first upper cutter block 5423 has a second separation groove 5424 which penetrates in the second direction Y. The output end of the punching-off driving member 532 can be embedded in the second separation groove 5424. Different cutters 540 are driven by the switching driving member 520 to slide in the second direction Y to below the punching-off driving member 532. The second separation groove 5424 of the cutter 540 is embedded in the output end of the punching-off driving member 532, and the cutter 540 and the punching-off driving member 532 are quickly and detachably connected in position, thereby being able to withstand the punching-off force. Furthermore, the embedded fitting of the second separation groove 5424 and the output end of the punching-off driving member 532 can increase the contact area of the two, so that the punching-off force is directly and uniformly transmitted to the first upper cutter block 5423.

[0042] In some embodiments, a second upper cutter block 5425 is elastically installed on the bottom of the upper cutter plate 5421. Optionally, a second elastic sleeve 547 is arranged between the second upper cutter block 5425 and the upper cutter plate 5421. The second upper cutter block 5425 has a fixed knife opening 5426 which penetrates. The fixed knife opening 5426 is used for the cutter body 5422 to pass through. The cutter body 5422 is aligned with the fixed knife opening 5426 after elastic buffering, and passes through the punching-off channel 541 and the entry knife opening 5435. Optionally, the bottom of the second upper cutter block 5425 has a punching-off channel 541 which penetrates in the first direction X. The fixed knife opening 5426 penetrates the punching-off channel 541 in the second direction Y.

[0043] In some embodiments, in combination with Figure 2 The tool changing mechanism 500 further comprises a feeding bracket 561 fixedly installed on the frame 100, and a feeding drive (not shown in the figure) for driving the tool changing slide 510 to slide, facilitating flexible adjustment of the interval between the punch breakage channel 541 and the 2D bending mechanism 20 in the first direction X, and facilitating smooth wire output.

[0044] In one embodiment, in combination with Figure 3 The tool changing slide 510 has a first waste port (not shown in the figure) penetrating therethrough, which is located in the same first direction X as the wire outlet groove 533, i.e., the punch breakage channel 541 of the tool 540 reaching the wire outlet groove 533 corresponds to the first waste port above and below, and the waste generated by the punch breakage is discharged through the first waste port below, avoiding accumulation and affecting continuous punch breakage operation. Specifically, in combination with Figure 6 The lower tool plate 5431 has a second waste port 545 penetrating therethrough, and among the tools 540 reaching the wire outlet groove 533, the second waste port 545 corresponds to the first waste port above and below. Specifically, the second waste port 545 corresponds to the tool entry opening 5435 above and below. Specifically, in combination with Figure 3 The sliding plate 511 has a plurality of third waste ports 515, each of which is in communication with the second waste port 545 of each tool 540, ensuring smooth discharge of waste.

[0045] In one embodiment, in combination with Figure 2 The bottom of the tool changing slide 510 is installed on a waste pipe 563, and the waste pipe 563 is in communication with the first waste port. The waste pipe 563 guides the orderly discharge of waste, facilitating waste collection and treatment, and can effectively prevent waste from accumulating at the tool changing slide 510 or the first waste port. Specifically, the feeding bracket 561 has an anti-pipe groove extending in the first direction X, and the waste pipe 563 is movably embedded in the anti-pipe groove, so that when the feeding drive drives the tool changing slide 510 to slide in the first direction X, the waste pipe 563 slides in the anti-pipe groove without motion interference.

[0046] In some embodiments, in combination with Figure 3The side portions of the tool changing slide 510 are rotatably installed with an entry rolling assembly, which includes two left and right rolling members 514 spaced apart along the second direction Y, and the interval between the two rolling members 514 is in the same first direction X as the exit slot 533. The flat wire 10 enters the exit slot 533 or the cutting channel 541 through the interval between the two rolling members 514, and the entry rolling assembly precisely guides the flat wire 10 to ensure the stability of the entry path. When the flat wire 10 passes through, it rolls and rubs with the two rolling members 514, which can greatly reduce the friction and contact damage. Specifically, the tool changing slide 510 is rotatably installed with an entry rolling assembly on both sides in the first direction X. Specifically, the side portion of the tool changing slide 510 close to the exit slot 533 is rotatably installed with an upper rolling member 516, and the height of the upper rolling member 516 is substantially the same as the upper edge of the exit slot 533 to prevent the flat wire 10 from being raised and guide the flat wire 10 to smoothly enter the exit slot 533.

[0047] In some embodiments, in combination with Figure 3 The tool changing mechanism 500 further includes an exit detection sensor 571 installed on the cutting support 531, which is used to detect whether the flat wire 10 extends out of the exit slot 533.

[0048] In some embodiments, in reference to Figure 7 、 Figure 8 and Figure 9 The 2D bending mechanism 20 includes a linear pushing mechanism 200 and a rotary bending mechanism 300. The linear pushing mechanism 200 includes 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 (see Figure 10 ) arranged in sequence along the first direction X. The first slot section 211 and the exit slot 533 are located on the same straight line. 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 Z. The first slot section 211 does not penetrate the feeding plate 210 in the vertical direction Z, and the second slot section 212 penetrates the feeding plate 210 in the vertical direction Z. The pushing assembly 220 pushes the flat wire 10 along the first direction X to slide from the first slot section 211 to the second slot section 212, and the clamping assembly 230 clamps the flat wire 10 up and down to move in the 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 along the first direction X 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 raising during conveying.

[0049] In combination with Figure 7 and Figure 9The rotating and bending mechanism 300 comprises a rotating driving member 310, a pressing driving member 320 and a first bending block 330. The first bending block 330 has a bending groove 331 which is in abutment with the end of the second groove segment 212 and penetrates through the first bending block 330 along the first direction X. The output end of the pressing driving member 320 is connected with a pressing block 321 which presses the flat wire 10 against the bending groove 331. The output end of the rotating driving member 310 is connected with a second bending block 311 which is located outside the first bending block 330. The rotating driving member 310 drives the second bending block 311 to rotate so as to push the flat wire 10 exposed in the bending groove 331 in the first direction X to bend. In each bending process, the positioning of the flat wire 10 in the vertical direction Z 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 X are positioned left and right by the bending groove 331 and the second groove segment 212 respectively, and are clamped up and down by the pressing block 321 and the clamping assembly 230 respectively.

[0050] Therefore, the pushing assembly 220 pushes the flat wire 10 in the first groove segment 211 to slide into the second groove segment 212 in the first direction X. The clamping assembly 230 clamps the flat wire 10 in the second groove segment 212 to move in the first direction X to the bending groove 331 of the first bending block 330. The pressing driving member 320 drives the pressing block 321 to press and fix the flat wire 10 in the bending groove 331. The rotating 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 bending groove 331 in the first direction X and pushes the exposed flat wire 10 to bend around the port of the bending groove 331. When the rotating and bending mechanism 300 bends the flat wire 10, the clamping assembly 230 clamps the flat wire 10 up and down, so 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 groove segment 212, realizes continuous connection and improves the work efficiency.

[0051] In some embodiments, in combination with Figure 7 , Figure 8 and Figure 10The 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. The first linear driving member 221 drives the first lifting driving member 222 to slide in the first direction X. 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 that the pushing member 223 is adjusted in height, and it is ensured 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 X, so that the pushing is stable. After the pushing member 223 pushes the flat wire 10 from the first groove section 211 to the second groove 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.

[0052] In one embodiment, in combination 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. 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 lower end of the pushing plate 2232 can be embedded in the first groove section 211, so as to push the flat wire 10. Specifically, the pushing member 223 has a first protruding block, which is used to abut against the end of the flat wire 10 away from the rotary bending mechanism 300. The abutment and pushing ensure that the flat wire 10 slides in the first direction X.

[0053] In some embodiments, in combination 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 Z. The first lifting block 2222 is vertically and slidingly installed on the first sliding groove 2223. One side of the first lifting block 2222 in the second direction Y is connected with the pushing member 223. The other side of the first lifting block 2222 in the second direction Y abuts against the first driving body 2221 through a first elastic member 2224. 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 toward 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 and rebounded, so as to drive the first lifting block 2222 to make a slight displacement in the second direction Y, so that the pushing member 223 can always closely fit the side of the flat wire 10. Specifically, the first sliding groove 2223 is provided with a first limiting structure, which limits the lifting range of the first lifting block 2222 in the vertical direction Z. The first limiting structure can be a limiting step or a limiting pin in the first sliding groove 2223.

[0054] In some embodiments, in combination with Figure 7 , Figure 8 The 2D bending mechanism 20 further comprises a first material guiding driving member 411 mounted on the feeding plate 210, 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 Y, and the first material guiding plate 412 is located on the side of the main body part 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 Y to form a limit on one side of the flat wire 10 in the second direction Y located in the first slot section 211. When the flat wire 10 falls outside the first slot section 211 during feeding, the first material guiding plate 412 pushes the flat wire 10 to fall into the first slot section 211 along the second direction Y, facilitating the operation of the straight-line material pushing mechanism 200. The first material guiding driving member 411 drives the first material guiding plate 412 to approach the flat wire 10 until the first material guiding plate 412 is attached to one side of the flat wire 10 in the second direction Y, and the flat wire 10 is pressed on the slot wall of the first slot section 211 in the second direction Y, completely eliminating the risk of horizontal deviation.

[0055] In one of the embodiments, the feeding plate 210 has a first sliding hole 213 extending along the second direction Y, the first material guiding driving member 411 is mounted on the bottom of the feeding plate 210 to prevent spatial interference with the material pushing member 223 and the material clamping assembly 230, fully utilize the installation space of the feeding plate 210 in the vertical direction Z, and does not occupy the installation space of the feeding plate 210 in the first direction X and the second direction Y, which is beneficial to reduce the size of the feeding plate 210 in the first direction X and the second direction Y. The bottom of the material pushing plate 2232 is connected with the output end of the first material guiding driving member 411, and the top of the material pushing plate 2232 is exposed to the feeding plate 210 through the first sliding hole 213. Specifically, the feeding plate 210 has a mounting position 216, and the first material guiding driving member 411 is mounted on the mounting position 216.

[0056] In some embodiments, in combination with Figure 7 and Figure 12 The material clamping assembly 230 comprises a second straight-line driving member 231, a second lifting driving member 232, and two material clamping members 233 spaced apart in the vertical direction Z, the second straight-line driving member 231 is mounted on the rack 100, the second straight-line driving member 231 drives the second lifting driving member 232 to slide along the first direction X, the material clamping member 233 has a material clamping plate capable of being embedded in the second slot section 212, and the second lifting driving member 232 drives the two material clamping members 233 to perform lifting movement so that the two material clamping plates are folded or separated from each other in the vertical direction Z.

[0057] In one of the embodiments, in combination with Figure 12The second lifting driving member 232 comprises a second driving body 234 and two second lifting blocks 235. The second driving body 234 has a second sliding groove 236 extending along the vertical direction Z. The second lifting blocks 235 are vertically slidingly installed in the second sliding groove 236. One side of the second lifting blocks 235 in the second direction Y is connected with the clamping member 233. The other side of the second lifting blocks 235 in the second direction Y abuts against the second driving body 234 through a second elastic member 237. The second elastic member 237 can form a flexible buffer between the second lifting blocks 235 and the second driving body 234. Meanwhile, the second lifting blocks 235 are cantilevered installed on the second driving body 234. The second elastic member 237 continuously applies a pre-tightening force to the second lifting blocks 235 towards one side of the second slot section 212, so as to ensure that the end of the second lifting blocks 235 is kept in tension during the lifting process.

[0058] In one of the embodiments, in combination with Figure 7 and Figure 11 The 2D bending mechanism 20 further comprises at least one pair of positioning assemblies 420. Each pair of positioning assemblies 420 is located on opposite sides of the second slot section 212 in the second direction Y. Each positioning assembly 420 comprises a positioning block 421, a sliding block 422, a rotating block 425 and a third elastic member 426. The positioning block 421 is fixedly installed on the feeding plate 210. The sliding block 422 is slidingly installed on the feeding plate 210 in the second direction Y and located on one side of the positioning block 421 close to the second slot section 212. The rotating block 425 is rotatably installed on the sliding block 422. The third elastic member 426 is compressed between the positioning block 421 and the sliding block 422. When the flat wire 10 passes through the pair of positioning assemblies 420, the flat wire 10 is in elastic contact and rolling contact with the rotating block 425 in the second direction Y. The elastic contact can adaptively limit the flat wire 10 of different specifications and sizes. The rolling contact reduces friction, protects the surface of the flat wire 10 and ensures smooth lifting and transferring. Each pair of positioning assemblies 420 symmetrically restricts the flat wire 10 and offsets the bending stress of the flat wire 10. Specifically, the rotating block 425 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.

[0059] Specifically, in combination with Figure 11 The feeding plate 210 has a third sliding groove 214. The sliding block 422 is slidingly installed in the third sliding groove 214. The third sliding groove 214 guides and restricts the sliding direction of the sliding block 422, so as to avoid dislocation of the sliding block 422. Optionally, the length direction of the third sliding groove 214 is consistent with the compression direction of the third elastic member 426.

[0060] Specifically, in combination with Figure 11The sliding block 422 has a first mounting hole 423, and an end of the third elastic member 426 is embedded in the first mounting hole 423, so as to avoid the third elastic member 426 from being deviated, falling off or being unevenly stressed during compression / resetting. If the third elastic member 426 is not constrained by the first mounting hole 423, the third elastic member 426 will move radially, and the movement will be transmitted to the rotating block 425 through the sliding block 422, which will cause the sliding block 422 to slightly swing laterally, and the swing will make the cylindrical surface of the rotating block 425 no longer parallel to the side surface of the flat wire 10, and the cylindrical surface of the rotating block 425 will be in inclined contact with the flat wire 10.

[0061] Specifically, in combination with Figure 11 The positioning block 421 has a second mounting hole, and an end of the third elastic member 426 is embedded in the second mounting hole. The second mounting hole and the first mounting hole 423 of the sliding block 422 form a two-end positioning structure of the third elastic member 426. Optionally, the second mounting hole is coaxially arranged with the first mounting hole 423, and the third elastic member 426 is forced to be limited in the coaxial hole, and the axis is always consistent with the stress direction during compression or resetting.

[0062] Specifically, in combination with Figure 11 The sliding block 422 has a third mounting hole 424 penetrating in the vertical direction Z, and one end of the rotating block 425 is rotatably arranged through the third mounting hole 424. The rotating shaft of the rotating block 425 is forced to be constrained on the axis of the third mounting hole 424, so as to ensure that the rolling direction is always consistent with the moving direction (the first direction X) of the flat wire 10, and there is no lateral force interference.

[0063] Optionally, the bottom of the third sliding groove 214 is provided with a penetrating fourth sliding groove 215, and the bottom end of the rotating block 425 is arranged through the fourth sliding groove 215 to form a clearance fit. If the rotating block 425 is slightly deviated due to equipment vibration or stress impact only by the constraint of the third mounting hole 424, the deviation will cause the contact point between the rotating block 425 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 425 in the first direction X. At the same time, the fourth sliding groove 215 can support the rotation of the rotating block 425, and the stress of the upper wall of the third mounting hole 424 is balanced, so as to greatly reduce the bending moment of the rotating block 425, the stress of the rotating block 425 is more uniform, and the local stress concentration problem is relieved. 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.

[0064] In some embodiments, in combination with Figure 7 , Figure 9 and Figure 12, the 2D bending mechanism 20 comprises an adapter plate 430, the adapter plate 430 has an adapter slot 431 penetrating through in the vertical direction Z. The adapter slot 431 can penetrate through the adapter plate 430 in the first direction X away from one end of the first slot section 211. The adapter slot 431 is located directly above the bending slot 331, the pressing driving member 320 is installed on the top of the adapter plate 430, and the first bending block 330 is installed on the bottom of the adapter plate 430. The pressing driving member 320 and the first bending block 330 are respectively located on both sides of the adapter plate 430, and the adapter slot 431 is arranged to 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. In an embodiment, the second bending block 311 is located outside the first bending block 330.

[0065] In an 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 containing hole 313 for containing the first bending block 330, and the containing 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. In an 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 containing hole 313, so as to bend and form the flat wire 10 exposed outside the containing hole 313.

[0066] In some embodiments, please refer to Figure 13 to Figure 15 , the wire forming device further comprises a forming mechanism, the forming mechanism is located downstream of the 2D bending mechanism 20 in the first direction X. The forming mechanism comprises a switching bracket 610, a sliding track 620, a die changing driving assembly 700 and a stamping assembly 800. The number of the sliding tracks 620 is multiple, and all the sliding tracks 620 are sequentially and adjacently installed on the top of the switching bracket 610 in a loop structure, without occupying a large area of site for placing idle forming dies 900. The die changing driving assembly 700 is installed on the switching bracket 610, the number of the die changing driving assembly 700 is the same as and corresponds to the number of the sliding tracks 620, and each die changing driving assembly 700 is used to drive the forming die 900 placed on the sliding track 620 to move linearly along the current sliding track 620. The stamping assembly 800 comprises a stamping bracket 810 and a stamping driving member 820, and the stamping bracket 810 is installed on the switching bracket 610. Specifically, the stamping bracket 810 is located downstream of the bending slot 331 in the first direction X. The stamping driving member 820 is installed on the stamping bracket 810 and located above the sliding track 620, and the output end of the stamping driving member 820 provides a stamping force to the forming die 900 sliding thereunder.

[0067] The plurality of specifications of the forming die 900 are placed on the sliding rail 620, and the feeding and discharging positions of the flat wire 10 are located beside the stamping assembly 800. When different specifications of the flat wire 10 need to be processed by different forming dies 900, the die changing driving assembly 700 pushes the corresponding forming die 900 to the lower side of the stamping driving part 820, so as to realize the processing and forming of the flat wire 10 of multiple specifications. Compared with the traditional multiple specifications processing which needs to manually disassemble and assemble the forming die 900 and needs to move the flat wire 10 to different forming dies 900, the forming mechanism does not need to disassemble and assemble the forming die 900, and does not need to move the flat wire 10 to different forming dies 900. The forming die 900 is distributed on the switching support 610 and can be flexibly moved, so that the processing efficiency is greatly improved.

[0068] In the embodiment, the sliding direction of each sliding rail 620 is the length direction of the sliding rail 620. The sliding rail 620 can place at least two forming dies 900. The forming die 900 can be a blanking die for blanking the flat wire 10, or can be a forming die for stamping and forming the flat wire 10, which is not uniquely limited here. In the embodiment, the forming die 900 is a blanking die for blanking the flat wire 10. Figure 13 And Figure 15 In the illustrated embodiment, the number of sliding rails 620 is four, and the four sliding rails 620 are connected end to end to form a quadrilateral sliding track. Each sliding rail 620 can place four forming dies 900, so that a total of up to 16 forming dies 900 can be placed.

[0069] In some embodiments, in combination with Figure 13 The sliding rail 620 includes a support bottom plate 621 and a plurality of groups of sliding support blocks 622. The sliding support blocks 622 are fixedly installed on the support bottom plate 621, and all groups of the sliding support blocks 622 are sequentially and spacedly distributed along the length direction of the support bottom plate 621.

[0070] In one of the embodiments, in combination with Figure 13 The sliding rail 620 includes a first rolling support 631. The first rolling support 631 is installed on the support bottom plate 621, the top surface of the first rolling support 631 is not higher than the top surface of the sliding support block 622, and the top of the first rolling support 631 is elastically provided with a rotatable first rolling ball. When the forming die 900 moves on the track, the first rolling ball rolls and rubs, which can significantly reduce the pressure of the die changing driving assembly 700. Specifically, the number of the first rolling supports 631 is multiple, and the multiple first rolling supports 631 are spacedly distributed along the length direction of the support bottom plate 621. Specifically, the first rolling support 631 and the first rolling ball form a universal ball.

[0071] In one of the embodiments, in combination with Figure 13The sliding track 620 comprises a limiting side plate 640 installed on the side of the supporting bottom plate 621 to limit the width of the forming die 900 on the sliding track 620. Specifically, the inner side of the limiting side plate 640 is installed on the second rolling support 632, and the inner side of the second rolling support 632 is elastically provided with a rotatable second rolling ball. When the forming die 900 moves on the track, the side of the forming die 900 rolls with the second rolling ball, which can significantly reduce the pressure of the die changing driving assembly 700. Optionally, the number of the second rolling supports 632 is multiple, and the multiple second rolling supports 632 are distributed along the length direction of the supporting bottom plate 621. Specifically, the second rolling support 632 and the second rolling ball form a universal ball.

[0072] In some embodiments, each sliding track 620 has an upper and lower long slot 6211 extending along the length direction of the sliding track 620, and the die changing driving assembly 700 comprises a die changing driving member 710 and a push rod 720. The die changing driving member 710 is installed on the bottom of the sliding track 620, does not occupy the placing area of the forming die 900 on the top of the track, and does not conflict with the stamping driving member 820 in the vertical space, so that the overall mechanism structure is more compact. The output end of the die changing driving member 710 is connected with the push rod 720, and the push rod 720 is exposed to the sliding track 620 through the long slot 6211. The long slot 6211 provides accurate guidance for the movement of the push rod 720. Specifically, the output end of each die changing driving member 710 is connected with two push rods 720 distributed along the width direction of the sliding track 620.

[0073] In one of the embodiments, one end of the long slot 6211 is located at one end of the sliding track 620 in the length direction, and the push rod 720 can move to one end of the sliding track 620 along the slot. All the sliding tracks 620 are connected end to end to form a circular structure. When the forming die 900 moves from the current sliding track 620 to the end, it needs to smoothly enter the next sliding track 620. The push rod 720 can be pushed to one end of the sliding track 620, and the forming die 900 can be accurately pushed to the joint of the sliding tracks 620, so as to avoid the forming die 900 being stuck between two sliding tracks 620 due to insufficient moving distance.

[0074] In one of the embodiments, the forming mechanism further comprises a position detection sensor 650 installed on the side of the sliding track 620, and the position detection sensor 650 is located directly below the stamping driving member 820. Figure 15 The position detection sensor 650 (such as a photoelectric sensor or a proximity switch) can directly detect whether the forming die 900 reaches the preset stamping station. Only when the position detection sensor 650 confirms that the forming die 900 is in place, the stamping assembly 800 acts, so as to prevent mispositioning stamping.

[0075] In one embodiment, please refer to Figure 16 and Figure 18 The molding die 900 includes an elastically connected upper die 910 and a lower die 920, and the upper die 910 and the lower die 920 are used to place the flat wire 10. The output end of the stamping drive 820 provides a stamping force to the upper die 910 rotated below it, so as to make the upper die 910 and the lower die 920 fold, thereby performing 3D stamping molding on the flat wire 10 located between the upper die 910 and the lower die 920.

[0076] In some embodiments, please refer to Figure 16 and Figure 18 The lower die 920 includes 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 of the two blocks encloses a molding groove 925. Among them, the side of the first lower block 923 close to the second lower block 924 and the second lower block 924 enclose a part of the molding groove 925, and the other two opposite sides of the first lower block 923 have another part of the molding groove 925. The upper die 910 includes an upper plate 911, a first upper block 912 and a second upper block 913 fixedly installed on the upper plate 911, the first upper block 912 has a molding protrusion 914 for adapting to the molding 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 molding die 900 works, the upper die 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 molding groove 925 more accurately adapt to the 3D shape requirements of the flat wire 10, facilitating accurate molding 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 receives relatively uniform pressure at each part during the molding process, avoiding defects such as product deformation and cracking caused by uneven pressure.

[0077] In an embodiment, the lower die 920 further comprises a sliding elastic piece 926, two ends of the sliding elastic piece 926 abutting against the first lower block 923 and the second lower block 924 respectively. When the upper die 910 is lifted by the stamping driving piece 820, the pushing force of the second upper block 913 on the second lower block 924 disappears, the sliding elastic piece 926 will rebound by itself, 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 the removal of the formed flat wire 10 and the placement of 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 piece 926 gradually buffers the impact force by compression, which not only protects the die bonding surface, but also greatly reduces the collision noise and vibration.

[0078] In an embodiment, the 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 during the sliding process, reduces the deviation and shaking during the sliding process, can maintain a stable motion state, and helps to ensure the dimensional accuracy and shape accuracy of the forming groove 925, thereby improving the forming quality of the product.

[0079] In an embodiment, the second upper block 913 has a first inclined surface 915, which is inclined from bottom to top towards 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 contact 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 pointing to 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 device, 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 always points to the direction of the first lower block 923, and as the upper die 910 is pressed down, the direction of the component force will be ensured by the geometric constraint of the first inclined surface 915, so that the second lower block 924 slides along the preset path of the sliding guide 927, avoiding the deviation or jamming of the second lower block 924 due to uneven sliding resistance, and ensuring the center degree and size consistency of the flat wire 10 forming.

[0080] In an embodiment, the second lower block 924 has a second inclined surface 929, which is inclined upward from the bottom to 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 force is divided into a vertical component and a horizontal component along the second inclined surface 929, the horizontal component always points to the direction of the first lower block 923, and as the upper die 910 is pressed downward, the direction of the horizontal component is constrained by the geometry of the second inclined surface 929, which ensures that the second lower block 924 slides along the preset path of the sliding guide 927, avoids the second lower block 924 from deviating or being stuck due to uneven sliding resistance, and guarantees the centering and dimensional consistency of the flat wire 10.

[0081] In an 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 a plane, and the bottom surface of the second upper block 913 is a plane, when the upper die 910 and the lower die 920 are closed to the position, the top surface of the support surface is in contact with the bottom surface of the second upper block 913, 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 and the lower die, and help to guarantee the dimensional accuracy and shape accuracy of the forming groove 925, thereby improving the forming quality of the product.

[0082] In an 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 to each other, so that when the first limiting column 930 abuts against the second limiting column 940, the upper die 910 stops moving downward to avoid over-stamping or insufficient stamping. When the dies are 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, while when the first limiting column 930 abuts against the second limiting column 940, most of the stamping impact force is 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.

[0083] In an embodiment, the lower plate 922 is fixedly installed with a third limiting column 950, and 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 die closing elastic member 970 which 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 upward and downward movement of the upper die 910. The die closing elastic member 970 abuts against the sliding sleeve 960, absorbs the impact force at the moment of die closing through elastic deformation, and avoids rigid collision damage. The die closing elastic member 970 can be a compression spring.

Claims

1. A wire forming device, characterized in that, include: The frame has two perpendicular directions: a first direction, a second direction, and a vertical direction. A tool changing mechanism includes a tool changing slide, a switching drive, a cutting drive assembly, and multiple tools. The tool changing slide is mounted on the frame, and the tools slide along a second direction and are spaced apart on the tool changing slide. Each tool has a cutting channel extending along the first direction for a flat wire to pass through. The switching drive drives the tools to slide along the tool changing slide. The cutting drive assembly includes a cutting bracket and a cutting drive. The cutting bracket is mounted on the tool changing slide, and the cutting drive is mounted on the top of the cutting bracket and directly above the tool changing slide. The cutting bracket has a wire outlet groove extending along the first direction, and the wire outlet groove is flush with the cutting channel. A 2D bending mechanism is installed on the frame and located downstream of the cable outlet groove; The 2D bending mechanism includes a linear pushing mechanism and a rotary bending mechanism. The linear pushing mechanism includes a feeding plate, a pushing 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 first groove segment and the wire outlet groove are located in the same first direction. The pushing 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.

2. The wire forming apparatus according to claim 1, characterized in that: The tool changing mechanism further includes a sliding plate, which is slidably mounted on the tool changing slide, and all the tools are mounted on the sliding plate at intervals along the second direction; The tool changing mechanism further includes a first screw rotatably mounted on the punching bracket. The switching drive and the first screw are spaced apart along the vertical direction. The switching drive drives the first screw to rotate via a first belt. The sliding plate is threadedly connected to the first screw via a first auxiliary component.

3. The wire forming apparatus according to claim 1, characterized in that: The tool changing mechanism further includes a punching drive shaft, which includes a first shaft segment, a second shaft segment, and a third shaft segment connected sequentially along the second direction. The first shaft segment, the third shaft segment, and the punching drive are coaxially arranged. The first shaft segment is connected to the rotary output end of the punching drive, and the second shaft segment is eccentrically arranged with respect to the first shaft segment. The tool changing mechanism further includes a first punching block and a second punching block. The upper end of the first punching block is rotatably sleeved with the second shaft segment. The second punching block is rotatably sleeved with the lower end of the first punching block through a punching pin. The second punching block is slidably mounted on the punching bracket along the vertical direction. The second punching block is detachably connected to the tool. The punching bracket is equipped with an angle sensor, and the end of the third shaft segment is connected to an angle trigger. The angle trigger passes by the third shaft segment as it rotates and triggers the angle sensor.

4. The wire forming apparatus according to claim 1, characterized in that: The cutting tool includes an upper die and a lower die that are elastically connected. The lower die includes a lower blade plate, a first lower blade block, and a second lower blade block. The first lower blade block is fixedly installed on the lower blade plate and has a first separation groove that extends along the second direction. The second lower blade block is slidably installed in the first separation groove and has an inlet. The upper die includes an upper blade plate and a blade body installed on the upper blade plate. The blade body can be embedded in the inlet. The top of the upper blade plate is equipped with a first upper blade block, the first upper blade block has a second separation groove that runs through the second direction, and the output end of the punching drive can be embedded in the second separation groove; A second upper blade block is elastically mounted on the bottom of the upper blade plate. The second upper blade block has a through fixed blade opening for the blade body to pass through.

5. The wire forming apparatus according to claim 1, characterized in that: The tool changing mechanism further includes a feed bracket and a feed drive. The feed bracket is fixedly installed on the frame, and the tool changing slide is slidably installed on the feed bracket along the first direction. The feed drive is used to drive the tool changing slide to slide.

6. The wire forming apparatus according to claim 1, characterized in that: 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 and 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 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 in the first groove. One side of the first lifting block in the second direction is connected to the feeding component, and the other side of the first lifting block in the second direction abuts against the first drive body through a first elastic member. And / or, 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. 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.

7. The wire forming apparatus 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.

8. The wire forming apparatus according to any one of claims 1 to 7, characterized in that: The line forming device further includes a forming mechanism located downstream of the 2D bending mechanism in the first direction. The forming mechanism includes a switching bracket, a stamping assembly, a die-changing drive assembly, and multiple sliding tracks. All the sliding tracks are sequentially connected end-to-end on the top of the switching bracket. The die-changing drive assembly is installed on the switching bracket, and the number of the die-changing drive assemblies is the same as the number of the sliding tracks and corresponds one-to-one. Each die-changing drive assembly is used to drive the forming die placed on the sliding track to move linearly along the current sliding track. The stamping assembly includes a stamping bracket and a stamping drive component. The stamping bracket is installed on the switching bracket, and the stamping drive component is installed on the stamping bracket and located above the sliding track. The output end of the stamping drive component provides stamping force to the forming die sliding below it.

9. The wire forming apparatus according to claim 8, characterized in that: The molding die includes an upper die and a lower die that are elastically connected. The lower die 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 molding groove. The upper die includes an upper plate, a first upper block, and a second upper block that are both fixedly installed on the upper plate. The first upper block has a molding protrusion that is adapted to the molding groove. The second upper block abuts against and pushes the second lower block to slide close to the first lower block.

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