Generator stator coil electromagnetic wire stroking device

Abstract

The invention discloses a generator stator coil electromagnetic wire stroking device which comprises a mounting frame, an X-direction moving mechanism, a material pumping mechanism, a material stroking mechanism and a turnover mechanism, the X-direction moving mechanism drives the material pumping mechanism, the material stroking mechanism and the turnover mechanism to horizontally reciprocate in the X direction, and the X-direction moving mechanism is provided with a pair of sliding seats arranged at the two ends of the mounting frame at intervals; the two ends of a guide beam of the material pumping mechanism are connected with the sliding bases respectively, and the material pumping mechanism is further provided with a material pumping clamping structure. The material pumping mechanism, the material stroking mechanism and the turnover mechanism can move on the X-direction moving mechanism, so that the electromagnetic wire feeding device can be aligned with electromagnetic wires at different feeding positions, the electromagnetic wires at a feeding station are upwards supported by the material pumping mechanism, and the electromagnetic wires stacked together from bottom to top can be held tightly by the material stroking mechanism; the scattering condition in the overturning process is prevented; and the overturning mechanism drives the plurality of stroking and holding structures to overturn at the same time during overturning, so that the electromagnetic wires which are stacked up and down are overturned by 90 degrees, and automatic stroking of the electromagnetic wires is realized.

Description

Technical Field

[0001] This invention relates to the field of hydroelectric generator set equipment manufacturing, and in particular to a generator stator coil electromagnetic wire winding device. Background Technology

[0002] For hydroelectric power stations, the performance of the generator directly determines the unit's power generation efficiency, stability, and service life. The stator coil, as the "heart" of the large generator, is a key factor affecting the overall quality of the generator. The production process of hydroelectric generator stator coils mainly includes blanking and wire removal, braiding (resulting in rectangular wire bars composed of two rows of flat copper sheets (i.e., electromagnetic wires)), insulation padding, straightening and curing, chamfering and demolding, short-circuit testing, and end forming. Among these, braiding is a crucial step in stator coil production. This step involves stacking the de-wired flat copper wires (i.e., electromagnetic wires) together from bottom to top, shaping and fixing them, and finally rotating them 90 degrees to reposition and bind the two rows of electromagnetic wires. In the current production process, the feeding, shaping, and rotating of the electromagnetic wires largely rely on manual operation, resulting in low production efficiency and making it difficult to meet the needs of large-scale stator coil production. Therefore, designing a material handling and turning device that can automatically shape and turn stator coils of different specifications is crucial for realizing the automated production of stator coils. Summary of the Invention

[0003] In view of this, the present invention proposes a generator stator coil electromagnetic wire winding device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The generator stator coil electromagnetic wire straightening device of the present invention includes a horizontally mounted mounting frame on the ground and an X-axis moving mechanism mounted on the mounting frame. It also includes a wire-pulling mechanism for extracting electromagnetic wires, a wire-straightening mechanism for straightening electromagnetic wires, and a flipping mechanism for flipping stacked electromagnetic wires to 90 degrees. The X-axis moving mechanism drives the wire-pulling mechanism, wire-straightening mechanism, and flipping mechanism to reciprocate horizontally in the X-axis direction on the mounting frame. It has a pair of slides spaced apart at both ends of the mounting frame. The two ends of the guide beam of the wire-pulling mechanism are respectively connected to the slides, and the wire-pulling clamping structure of the wire-pulling mechanism moves along the Y-axis of the guide beam. The flipping mechanism includes a rotary power source mounted on one of the slides, a rotary table, and a first drive shaft and a second drive shaft mounted on the rotary table. The rotary power source is connected to the rotary table, and the other ends of the first and second drive shafts are rotatably connected to the other slide. The wire-straightening mechanism has multiple wire-straightening clamping structures fixedly connected to the first and second drive shafts.

[0005] The beneficial effects are as follows: The material extraction mechanism, material straightening mechanism, and flipping mechanism of the present invention can move in the X-direction, thereby enabling the present invention to align with the electromagnetic wires at different feeding positions. The material extraction mechanism can then lift the electromagnetic wires at the feeding station, and the material straightening mechanism can lift and hold the electromagnetic wires stacked together from bottom to top, preventing them from scattering during the flipping process. The material straightening mechanism is fixedly connected to the first and second drive shafts of the flipping mechanism. When the flipping mechanism flips, it drives multiple material straightening and holding structures to flip simultaneously, thereby flipping the stacked electromagnetic wires by 90 degrees, realizing automatic material straightening of the electromagnetic wires, and thus accelerating the efficiency of wire bar weaving.

[0006] Preferably, the X-axis moving mechanism includes an X-axis power source disposed at one end of the mounting frame and a steering gearbox disposed at the other end of the mounting frame. The X-axis power source includes an X-axis motor and a dual-output reducer driven by the X-axis motor. One output end of the dual-output reducer is connected to a first X-axis lead screw, and its other output end is connected to a Y-axis shaft. The Y-axis is connected to the input end of the steering gearbox, and the output end of the steering gearbox is connected to a second lead screw parallel to the first lead screw. One of the slides is connected to the nut seat of the first lead screw, and the other slide is connected to the nut seat of the second lead screw. The advantages are: this invention utilizes one X-axis power source and a steering gearbox to achieve synchronous rotation of the lead screws on both sides, ensuring not only the synchronicity of the slides on both sides but also reducing the number of power sources. Furthermore, because the electromagnetic wire is relatively long, the distance between the two slides is relatively large; therefore, the Y-axis can adopt a split structure, with the two sections of the shaft connected by a coupling, and both ends of each section of the shaft connected to the support frame through slewing bearing seats to ensure stability.

[0007] Preferably, the mounting frame has a pair of X-axis bases, the X-axis power source is mounted on one of the bases, and the steering gearbox is mounted on the other base; each base has two spaced-apart X-axis slide rails, and the slide block slides in cooperation with the X-axis slide rails via a slider. This invention, by mounting X-axis slide rails on the bases, avoids slide block torsion and improves the load-bearing capacity of the slide block.

[0008] Preferably, the material extraction mechanism further includes a Y-axis movable seat driven by a Y-axis power source and an L-shaped mounting bracket disposed on the Y-axis movable seat, and the material extraction clamping structure is disposed on the mounting bracket. The mounting bracket of the present invention positions the material extraction clamping structure above the material straightening mechanism, enabling the pulling mechanism to pull the electromagnetic wire into the electromagnetic wire limiting groove of the material straightening mechanism, ensuring automatic extraction and stacking of the electromagnetic wire.

[0009] More preferably, the material extraction clamping structure includes an installation rod fixedly connected to the mounting support and a fixed seat provided at the end of the installation rod. The fixed seat is provided with an upper clamping jaw and a lower clamping jaw, and the upper clamping jaw is fixedly connected to a linear cylinder on the fixed seat. Protective blocks are provided on the clamping surfaces of the upper clamping jaw and the lower clamping jaw. The Y-axis power source includes a Y-axis motor fixed to the Y-axis movable seat and a third rack mounted on the guide beam. The third gear on the Y-axis motor meshes with the third rack. The Y-axis movable seat slides along a pair of Y-axis slide rails on the guide beam via a slider. The Y-axis power source drives the Y-axis movable seat to reciprocate along the Y-axis slide rails, causing the material-pulling clamping structure to pull the electromagnetic wire into the feeding mechanism. In actual operation, when the Y-axis motor starts, it drives the third gear to rotate. Since the third rack (horizontally mounted) is fixed to the guide beam, the Y-axis motor and the third gear drive the material-pulling clamping structure to reciprocate horizontally along the Y-axis slide rails via the Y-axis movable seat, satisfying the feeding requirements of the electromagnetic wire.

[0010] Preferably, the rotational power source is a rotary motor, which is fixedly connected to one of the slides via a motor mounting base; the other slide is provided with a rotary mounting base corresponding to the motor mounting base, and a rotating seat opposite to the rotary table is rotatably mounted on the rotary mounting base; one end of the first drive shaft and the second drive shaft are connected to the rotary table, and the other end of each is fixedly connected to the rotating seat; the first drive shaft and the second drive shaft are arranged obliquely and staggered vertically; the rotating seat is also provided with a positioning mechanism for pushing the electromagnetic wire into the material feeding mechanism.

[0011] The beneficial effects are: the rotary motor (which can be a servo motor) of the present invention can drive the rotary table to rotate when it rotates. Since the rotary seat and the rotary fixed seat are connected by bearings, the rotary table can drive the rotary seat to rotate synchronously through the first transmission shaft and the second transmission shaft when it rotates. Since the material feeding mechanism is fixedly connected to the first transmission shaft and the second transmission shaft, the material feeding mechanism can be flipped under the drive of the rotary motor during this process, thereby realizing the 90-degree flip of the electromagnetic wire.

[0012] More preferably, each of the material-winding and clamping structures includes a first clamping unit and a second clamping unit arranged opposite to each other. The first clamping units and the second clamping units of the plurality of material-winding and clamping structures cooperate in pairs to form an electromagnetic wire limiting groove. The material-pulling clamping structure is located above the electromagnetic wire limiting groove. The first clamping unit includes a first clamping seat with a clamping surface. The first drive shaft passes through the plurality of first clamping seats and is fixedly connected to the first clamping seats. A first clamping block for protecting the electromagnetic wire is provided on the clamping surface of each first clamping seat. The second clamping unit includes a second clamping seat. The second drive shaft passes through and is fixedly connected to the lower part of the second clamping seats of the multiple material clamping structures in sequence. Each second clamping seat has a mounting platform on its upper part. A clamping cylinder is provided on the mounting platform, and a second clamping block on the clamping surface of the second clamping seat is connected to the clamping cylinder. The bottom of the first clamping seat is fixedly connected to the second clamping seat located below the second clamping block. The first clamping seat and the second clamping seat form the electromagnetic wire limiting groove. The material handling mechanism also includes a clamping motor fixedly connected to the rotary table. The first shaft of the clamping motor passes through each of the first clamping seats. Multiple first gears are spaced apart on the first shaft. A first rack is horizontally arranged on each of the first clamping seats, meshing with the first gears. The rack seat of the first rack is fixedly connected to the first clamping block via an L-shaped adapter plate, driving the first clamping block to reciprocate in the X direction. In this invention, the clamping motor can drive the first rack to move horizontally via multiple first gears, thereby adjusting the horizontal position of multiple first clamping blocks. The clamping cylinder drives the second clamping block to reciprocate horizontally. The combination of the clamping cylinder and the clamping motor enables the simultaneous clamping and opening of multiple pairs of first and second clamping blocks, ensuring the clamping, flipping, and unloading of the electromagnetic wire.

[0013] More preferably, the material straightening mechanism further includes multiple support components, each support component including a pair of mounting plates fixedly connected by a connecting plate and support plates symmetrically arranged on the two mounting plates, the connecting plate being located below the first clamping seat; the material straightening mechanism further includes a lifting motor disposed on the rotary table, the second shaft of the lifting motor being rotatably connected to the rotating seat, the second shaft being located above the second transmission shaft; the second shaft passing through the middle of the second clamping seat and each second clamping seat being rotatably connected to the second shaft, multiple second gears being spaced apart on the second shaft, a second rack being disposed on one of the mounting plates of each support component and meshing with the second gear, the second rack being vertically arranged; at least a pair of sliders fixedly connected to the second clamping seat are respectively slidably engaged with the vertical slide rails of the two mounting plates. Before flipping, the support plate of the present invention is located below the electromagnetic wire and at the same height as the bottom of the electromagnetic wire guide groove, which is used to support the electromagnetic wire and improve the support performance of the material winding mechanism. After the electromagnetic wire is loaded, multiple pairs of support plates rise as a whole, thereby lifting multiple electromagnetic wires, so that the electromagnetic wires are located between the first clamping block and the second clamping block. The material winding and clamping structure is used to clamp the electromagnetic wires, preparing for flipping. The clamping also achieves the shaping of the long side of the electromagnetic wire.

[0014] Preferably, a pair of electromagnetic wire support mechanisms are also fixedly connected to the material-winding and clamping structure at the feeding end of the electromagnetic wire limiting groove. These mechanisms are symmetrically fixed to the first and second clamping seats of the material-winding and clamping structure. The mechanism includes a lifting cylinder and a wire-supporting cylinder that is driven to rise and fall by the lifting cylinder. The output end of the wire-supporting cylinder is connected to an electromagnetic wire support plate. A limiting member is provided on the material-winding and clamping structure at the end of the electromagnetic wire limiting groove to prevent the electromagnetic wire from flipping and falling. The limiting member has a through hole that cooperates with the electromagnetic wire, and the electromagnetic wire passes through the through hole of the limiting member.

[0015] The beneficial effects are as follows: This invention installs an electromagnetic wire support mechanism on the feeding end's winding and clamping structure, which can assist in supporting the electromagnetic wire during the pulling process of the feeding mechanism, ensuring stable pulling of the electromagnetic wire; after the electromagnetic wire is pulled into place, the electromagnetic wire support plate can be retracted, allowing the electromagnetic wire to fall into the electromagnetic wire limiting groove. The two electromagnetic wire support mechanisms can work alternately, improving the feeding efficiency of the electromagnetic wire, thereby improving the production efficiency of the stator coil; this invention also installs a pair of liftable limiting components on the end's winding and clamping structure, which can limit the end of each stack of electromagnetic wires, preventing the electromagnetic wires from scattering due to flipping.

[0016] More preferably, the positioning mechanism includes an X-axis cylinder fixed to the rotating base and a Y-axis cylinder connected to the X-axis cylinder. The piston rod of the Y-axis cylinder is provided with a push plate for pushing the electromagnetic wire into the electromagnetic wire limiting groove. The rotating base is also provided with a material extraction limiting mechanism, which includes an electromagnetic wire support platform fixed to one side of the rotating fixed base and upper and lower limiting components and front and rear limiting components fixed to the top of the rotating fixed base. The front and rear limiting components include a dual-axis slide cylinder and a pair of opening and closing claws driven by the dual-axis slide cylinder. Each opening and closing claw has a pair of vertically arranged rollers. The rollers on the two opening and closing claws form a limiting channel that cooperates with the electromagnetic wire. The upper and lower limiting components include a lower roller fixed to the outlet side of the limiting channel and an upper roller driven by a lifting cylinder. The upper roller and the lower roller are vertically opposite each other. The lifting cylinder drives the upper roller to descend, and the electromagnetic wire passes through the space between the upper roller and the lower roller.

[0017] Compared with the prior art, the advantages of the present invention are as follows: The material extraction mechanism, material straightening mechanism, and flipping mechanism of this invention can move in the X-direction, thereby enabling the invention to align with electromagnetic wires at different feeding positions. The material extraction mechanism picks up the electromagnetic wires at the feeding station, while the material straightening mechanism lifts and holds the electromagnetic wires stacked from bottom to top, preventing them from scattering during the flipping process. The material straightening mechanism is fixedly connected to the first and second drive shafts of the flipping mechanism. When the flipping mechanism flips, it drives multiple material straightening and holding structures to flip simultaneously, thereby flipping the stacked electromagnetic wires by 90 degrees, realizing automatic material straightening of the electromagnetic wires, and thus accelerating the efficiency of wire bar weaving. Attached Figure Description

[0018] Figure 1 This is a diagram showing the state of the electromagnetic wires inside the electromagnetic wire spool.

[0019] Figure 2 This is a schematic diagram of a wire rod.

[0020] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the material extraction mechanism. Figure 1 .

[0023] Figure 6 This is a schematic diagram of the material extraction mechanism. Figure 2 .

[0024] Figure 7 This is a schematic diagram of the right side of the flipping mechanism.

[0025] Figure 8 This is a schematic diagram of the left side of the flipping mechanism.

[0026] Figure 9 This is a schematic diagram of a material clamping structure (including supporting components). Figure 1 .

[0027] Figure 10 This is a top view of the material clamping structure (including the support components).

[0028] Figure 11 This is a schematic diagram of a material clamping structure (including supporting components). Figure 2 .

[0029] Figure 12 This is a schematic diagram of a material clamping structure (including supporting components). Figure 3 .

[0030] Figure 13 This is a schematic diagram of a material clamping structure (including supporting components). Figure 4 .

[0031] Figure 14 This is a schematic diagram of the auxiliary support structure.

[0032] Figure 15 This is a schematic diagram of the electromagnetic wire lifting mechanism.

[0033] Figure 16 This is a schematic diagram of the material extraction and limiting mechanism. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. It should be noted that the electromagnetic wire F typically comes in various specifications, each specification being stacked vertically and concentrated within the electromagnetic wire tray, as shown below. Figure 1 During weaving, the electromagnetic wires need to be extracted, stacked, and straightened, then rotated 90 degrees. The two rows of rotated electromagnetic wires of the same specification are then interlocked and woven together, ultimately resulting in the following... Figure 2 The wire bar M shown.

[0035] like Figure 3-5 As shown, the present invention proposes a generator stator coil electromagnetic wire straightening device, including a mounting frame N horizontally erected on the ground and an X-direction moving mechanism 100 set on the mounting frame N, and also includes a drawing mechanism 200 for extracting electromagnetic wire, a straightening mechanism 300 for straightening electromagnetic wire neatly, and a flipping mechanism 400 for flipping a stack of electromagnetic wires stacked together by 90°. Among them, the material extraction mechanism 200, the material straightening mechanism 300 and the flipping mechanism 400 are all directly or indirectly connected to the X-direction moving mechanism 100, so that the X-direction moving mechanism 100 drives the material extraction mechanism 200, the material straightening mechanism 300 and the flipping mechanism 400 to move horizontally in the X direction on the mounting frame N, thereby meeting the docking requirements of the present invention with different feeding stations, and thus realizing the pulling and feeding of electromagnetic wires at different feeding stations.

[0036] Combination Figure 3-4 It can be seen that the X-axis moving mechanism 100 has a pair of slides 108 spaced apart at both ends of the mounting frame N; the two ends of the guide beam 201 of the material extraction mechanism 200 are respectively connected to the two slides 108 one by one, so that the material extraction mechanism 200 reciprocates synchronously in the X-axis with the slides 108, thereby realizing the adjustment of the position of the material extraction mechanism 200; the material extraction mechanism 200 also has a material extraction clamping structure 204 that moves in the Y-axis along the guide beam 201, which can pull the electromagnetic wire to move in the Y-axis during operation, thereby realizing the feeding of the electromagnetic wire; The flipping mechanism 400 includes a rotary power source mounted on one of the slides 108, a rotary table 401, and a first drive shaft 402 and a second drive shaft 403 mounted on the rotary table 401. The rotary power source is connected to the rotary table 401, and the other ends of the two first drive shafts 402 and the second drive shaft 403 are rotatably connected to the other slide 108, realizing a direct connection between the flipping mechanism 400 and the X-axis moving mechanism 100, ensuring that the flipping mechanism 400 can be adjusted in the X-axis. The first drive shaft 402 and the second drive shaft 403 are fixedly connected to the rotary table 401, and the first drive shaft 402 and the second drive shaft 403 can rotate with the rotary table 401 rather than rotate on their own. The material feeding mechanism 300 has multiple material feeding and clamping structures. The material feeding and clamping structures are fixedly connected to the first drive shaft 402 and the second drive shaft 403, realizing the indirect connection between the material feeding mechanism 300 and the X-direction moving mechanism 100, and ensuring that the material feeding mechanism 300 moves synchronously in the X direction with the flipping mechanism 400.

[0037] The material extraction mechanism 200, the material winding mechanism 300, and the flipping mechanism 400 of the present invention can move in the X-direction moving mechanism 100, so that the present invention can be aligned with the electromagnetic wires at different feeding positions. Then, the material extraction mechanism 200 uses the electromagnetic wires at the feeding position to stack the electromagnetic wires together from bottom to top and hold them tightly. It is fixedly connected to the first drive shaft 402 and the second drive shaft 403 of the flipping mechanism 400, which can realize the simultaneous flipping of multiple material winding and holding structures, thereby flipping the stacked electromagnetic wires by 90 degrees, which facilitates weaving and improves production efficiency.

[0038] Combination Figure 3 As can be seen, the X-axis moving mechanism 100 includes an X-axis power source 101 disposed at one end of the mounting frame N and a steering gearbox 104 disposed at the other end of the mounting frame N. The X-axis power source 101 includes an X-axis motor and a dual-output reducer (both output ends are vertical) driven and connected to the X-axis motor. One output end of the dual-output reducer is connected to a first X-axis lead screw 102, and its other output end is connected to a Y-axis shaft 103. The Y-axis shaft 103 is connected to the input end of the steering gearbox 104, and the output end of the steering gearbox 104 is connected to a second lead screw 105 parallel to the first lead screw 102. One slide 108 is connected to the nut seat of the first lead screw 102, and the other slide 108 is connected to the nut seat of the second lead screw 105. This invention utilizes one X-axis power source 101 and steering gearbox 104 to achieve synchronous rotation of the lead screws on both sides, which not only ensures the synchronicity of the slides 108 on both sides but also reduces the number of power sources. In addition, since the electromagnetic wire is relatively long, the distance between the two slides 108 is relatively large. Therefore, the Y-axis 103 can adopt a split structure, which consists of two long shafts connected by a coupling. The two ends of each shaft are connected to the support frame through a slewing bearing seat to ensure stability.

[0039] Combination Figure 3 As can be seen, the mounting frame N has a pair of X-axis bases 106, with the X-axis power source 101 mounted on one base and the steering gearbox 104 mounted on the other base. Each base 106 has two spaced X-axis slide rails 107, and each slide block 108 slides in slidable engagement with its corresponding X-axis slide rail 107 via a slider. Both ends of each lead screw are mounted on its corresponding base 106 via bearing seats. The present invention installs X-axis slide rails 107 on the bases 106 to prevent the slide block 108 from twisting and to improve the load-bearing capacity of the slide block 108.

[0040] Combination Figure 5-6 It is understood that the material extraction mechanism 200 also includes a Y-axis movable seat 202 driven by a Y-axis power source and a mounting support 203 disposed on the Y-axis movable seat 202. The mounting support 203 has an L-shaped structure, and the material extraction clamping structure 204 is disposed at the upper end of the mounting support 203. The L-shaped structure of the mounting support 203 positions the material extraction clamping structure 204 above the material straightening mechanism 300, ensuring that the pulled-out electromagnetic wire enters the electromagnetic wire limiting groove of the material straightening mechanism 300 (which can be used to support the electromagnetic wire), thus ensuring the automatic extraction of the electromagnetic wire. This improves the feeding efficiency before the material is straightened. The Y-axis power source includes a Y-axis motor 205 fixed to the Y-axis moving seat 202 and a third rack 206 set on the guide beam 201. The third gear on the Y-axis motor 205 meshes with the third rack 206. The Y-axis moving seat 202 slides with a pair of Y-axis slide rails 207 on the guide beam 201 via a slider. The Y-axis power source drives the Y-axis moving seat 202 to reciprocate along the Y-axis slide rails 207 in the Y direction, causing the material-pulling clamping structure to pull the electromagnetic wire into the material-straightening mechanism 300. In actual operation, when the Y-axis motor 205 starts, it drives the third gear to rotate. Since the third rack 206 (horizontally installed) is fixed to the guide beam 201, the Y-axis motor 205 and the third gear drive the material-pulling clamping structure 204 to reciprocate horizontally along the Y-axis slide rails 207 via the Y-axis moving seat 202, meeting the requirements for pulling and feeding the electromagnetic wire.

[0041] Combination Figure 5-6 It is understood that the material extraction clamping structure 204 includes a mounting rod 204a fixedly connected to the mounting support 203 and a fixed seat 204b disposed at the end of the mounting rod 204a. The fixed seat 204b is provided with an upper jaw 204c and a lower jaw 204d, and the upper jaw 204c is fixedly connected to a linear cylinder 204f on the fixed seat 204b. Cylindrical protective blocks 204e are provided on the clamping surfaces of both the upper jaw 204c and the lower jaw 204d. The protective blocks 204e can be made of polyurethane. When the linear cylinder descends, the upper jaw 204c descends, and the upper jaw 204c and the lower jaw 204d clamp the electromagnetic wire. The protective blocks 204e protect the electromagnetic wire and reduce the impact of the material extraction clamping structure 204 on the electromagnetic wire.

[0042] The working process of the material extraction mechanism 200 of the present invention is as follows: First, the X-axis moving mechanism 100 is used to adjust the material extraction mechanism 200 to the electromagnetic wire feeding position, so that it is aligned with the electromagnetic wire to be extracted; second, the material extraction clamping structure 204 is adjusted to be located at the left end of the guide beam 201, so that the right end of the electromagnetic wire enters the lower clamp 204d, and the linear cylinder drives the upper clamp 204c to descend to achieve clamping of the electromagnetic wire. The Y-axis motor 205 starts and drives the material extraction clamping structure 204 to move to the right along the Y-axis slide rail 207, thereby pulling out the electromagnetic wire. After being pulled out, the Y-axis motor 205 drives the material extraction clamping structure 204 to continue to move to the right, and the upper clamp 204c rises, so that the right end of the electromagnetic wire falls off; the Y-axis motor 205 reverses its operation and drives the material extraction clamping structure 204 to move to the left to the initial position. This process is repeated to achieve continuous extraction and feeding of the electromagnetic wire, thereby improving feeding efficiency.

[0043] Combination Figure 7-8 It can be seen that a motor mounting base 405 is provided on the right slide 108, and the rotation power source is a rotary motor 406 (which can be a servo motor) fixed on the motor mounting base 405; a rotary mounting base 407 corresponding to the motor mounting base 405 is provided on the left slide 108, and a rotary seat 404 opposite to the rotary table 401 is rotatably mounted on the rotary mounting base 407, and the rotary seat 404 can rotate relative to the rotary mounting base 407; the right ends of the first drive shaft 402 and the second drive shaft 403 are connected to the rotary table 401, and the left ends of the first drive shaft 402 and the second drive shaft 403 are respectively fixed to the rotary seat 404, and the first drive shaft 402 and the second drive shaft 403 are arranged diagonally opposite each other. During operation, the rotary motor 406 drives the rotary table 401 to rotate. When the rotary table 401 rotates, it drives the first transmission shaft 402 and the second transmission shaft 403 to rotate around the center of the rotary table 401. During this process, the rotating seat 404 rotates synchronously. Since the material winding mechanism 300 is fixedly connected to the first transmission shaft 402 and the second transmission shaft 403, the material winding mechanism 300 can be flipped under the drive of the rotary motor 406, thereby realizing the 90-degree flip of the electromagnetic wire, providing a basis for wire bar weaving, and thus improving the wire bar weaving efficiency.

[0044] Combination Figure 9-13 It is known that the material clamping structure includes a clamping motor 301 and a first clamping unit and a second clamping unit arranged opposite to each other. The first clamping unit and the second clamping unit are arranged opposite to each other and have multiple pairs to form electromagnetic wire limiting grooves for supporting electromagnetic wires. The material pulling clamping structure 204 is located above the electromagnetic wire limiting grooves and places the pulled electromagnetic wires in the electromagnetic wire limiting grooves below to realize continuous feeding of electromagnetic wires. The first clamping unit includes a first clamping seat 302 with a clamping surface. A first drive shaft 402 passes through multiple first clamping seats 302 and is fixedly connected to each first clamping seat 302. When the first drive shaft 402 rotates with the rotary table 401, it drives the first clamping seat 302 to flip. Each first clamping seat 302 has a first clamping block 303 on its clamping surface that protects and holds the electromagnetic wire. The second clamping unit includes a second clamping seat 304. A second drive shaft 403 passes sequentially through the lower part of the second clamping seats 304 of the multiple material clamping structures. Each second clamping seat 304 is fixedly connected to the second drive shaft 403. When the second drive shaft 403 rotates with the rotary table 401, it drives the second clamping seat 304 to rotate. A second clamping block 306 opposite to the first clamping block 303 is provided on the clamping surface of the second clamping seat 304. A clamping cylinder 307 is provided on the mounting platform on the outer side of the second clamping seat 304. The piston rod of the clamping cylinder 307 is connected to the second clamping block 306. When the clamping cylinder 307 is working, it drives the second clamping block 306 to reciprocate in the X direction, thereby realizing the clamping of the electromagnetic wire. The clamping cylinder 307 is preferably a double piston rod cylinder to ensure the linear reciprocating motion of the second clamping block 306. Combination Figure 7-13 It can be seen that a slot is provided below the clamping surface of the second clamping seat 304. The first clamping seat 302 has an L-shaped structure, and the end of its lower horizontal section is inserted into the slot and fixedly connected to the second clamping seat 304. This makes the first clamping seat 302 and the second clamping seat 304 fixedly connected to form a whole, ensuring that the electromagnetic wire limiting groove formed by the first clamping seat 302 and the second clamping seat 304 has bottom support and side limiting, which facilitates the stacking of electromagnetic wires. The clamping motor 301 is installed on the rotary table 401, and the end of its first shaft 308 is rotatably engaged with the rotating seat 404 to ensure the relative rotation of the first shaft 308. The first shaft 308 is located above the first transmission shaft 402. Each first clamping seat 302 is rotatably connected to the first shaft 308 through a bearing, so that... The first shaft 308 is rotatable relative to the first clamping seat 302. Multiple first gears 309 are spaced apart on the first shaft 308. A first rack 310, cooperating with the first gear 309, is horizontally arranged on one side of each first clamping seat 302. An L-shaped adapter plate 311 is fixedly connected to the end of the rack seat, which is fixedly connected to the first rack 310. The L-shaped adapter plate 311 extends into the mounting groove of the first clamping seat 302 and is fixedly connected to the first clamping block 303. The clamping motor 301 transmits torque to the first gear 309 through the first shaft 308. The first gear 309 meshes with the first rack 310, and the first gear 309 is fixed to the first shaft 308, causing the first rack 310 to reciprocate in the X direction, thereby satisfying the clamping and opening / resetting requirements of the first clamping block 303. Before flipping, the clamping cylinder 307 and the clamping motor 301 clamp the electromagnetic wire to prevent it from unraveling during the flipping process, ensuring flipping reliability.

[0045] Combination Figure 8-13 It is understood that the material handling mechanism 300 of the present invention also includes a support assembly for lifting the electromagnetic wire upward and a lifting motor 318 disposed on the rotary table 401. The support assembly includes a pair of mounting plates 312 fixedly connected by a connecting plate 313 and a support plate 314 symmetrically disposed on the two mounting plates 312. The connecting plate 313 is located below the first clamping seat 302, and the support plate 314 is located at a position corresponding to the electromagnetic wire limiting groove. The lifting motor 318 has a second shaft 315 disposed in the Y direction, which is rotatably engaged with the rotating seat 404 and located above the second transmission shaft 403. Each second clamping seat 304 is rotatably connected to the second shaft 315 through a bearing, ensuring that the second shaft 315 can rotate relative to the second clamping seat 304 to meet the adjustment requirements of the support assembly. Multiple second gears 316 are spaced apart on the second shaft 315. Each support assembly has a second rack 317 on one of its mounting plates 312, which meshes with the second gears 316. The second rack 317 is vertically oriented. Slider blocks symmetrically fixed to the second clamping seat 304 slide in cooperation with the vertical slide rails of the mounting plate 312, thereby ensuring the smooth lifting and lowering of the two support plates 314. In actual operation, the initial position of the support plate is consistent with the bottom height of the electromagnetic wire limiting groove, used to support the electromagnetic wire. After loading is completed, the support plate moves upward, lifting the electromagnetic wire a certain height, ensuring that the first and second clamping blocks tightly hold the multiple electromagnetic wires.

[0046] The working process of the material feeding mechanism 300 and the flipping mechanism 400 of the present invention is as follows: Electromagnetic wires are stacked from top to bottom in the electromagnetic wire limiting groove. When the number of stacked electromagnetic wires reaches the requirements for wire braiding, the lifting motor 318 starts, causing multiple pairs of support plates 314 to rise synchronously. Since the support plates 314 are located at the bottom of the electromagnetic wires, they can lift the electromagnetic wires upwards. After the support plates 314 are in place, the clamping cylinder 307 and the clamping motor 301 are activated. The second clamping block 306 moves to the opposite side under the drive of the clamping cylinder 307. The clamping motor 301 transmits torque to the first gear 309 through the first shaft 308. Since the first gear 309 is fixedly installed, the first rack 310 drives the first clamping block. 303 moves to the opposite side, thereby closing the first clamping block 303 and the second clamping block 306 to clamp the electromagnetic wire; after clamping, the rotary motor 406 is started to achieve a 90-degree flip of the electromagnetic wire; the first clamping block 303 and the second clamping block 306 open to facilitate the flipped electromagnetic wire to enter the next process; when the flipped electromagnetic wire is removed, the rotary motor 406 rotates 90 degrees in the opposite direction to reset the material handling mechanism 300, and the lifting motor 318 lowers the support plate 314 to the initial position, waiting for the next stack of electromagnetic wires to be lifted and clamped.

[0047] In actual installation, there are multiple material clamping structures. Apart from the two material clamping structures at the left and right ends, the remaining material clamping structures are all equipped with support components. Multiple support components are arranged at intervals to ensure the stable lifting of the electromagnetic wire, thereby ensuring the clamping of the electromagnetic wire. In addition, in actual installation, the support plate 314 preferably has an L-shaped structure, and the corners are connected with arcs to ensure the support capacity of the support plate 314.

[0048] In actual installation, to accommodate the arrangement and flipping of different types of electromagnetic wires, the first drive shaft 402 and the second drive shaft 403 are relatively long. To improve stability, the present invention installs an auxiliary support structure 800 in the middle of the first drive shaft 402 and the second drive shaft 403, which includes a guide support seat 801. The first drive shaft 402 and the second drive shaft 403 pass through the guide support seat 801 and are both fixedly connected to the guide support seat 801. The guide support seat 801 has an L-shaped limiting platform that cooperates with the first shaft 308 and the second shaft 315 respectively, so that the first shaft 308 and the second shaft 315 are respectively located on their corresponding L-shaped limiting platforms. Combination Figure 14 It can be seen that the mounting frame N corresponding to the guide support 801 is provided with an X-direction support 802 and an arc-shaped sliding support 804 that moves along the X-direction guide rail 803 on the X-direction support 802. A limit pivot 805 is provided inside the arc-shaped sliding support 804. The outer contour of the guide support 801 is an arc-shaped structure that matches the arc-shaped sliding support 804, so that the guide support 801 can rotate within the arc-shaped sliding support 804 when subjected to the torque applied by the transmission shaft. The arc-shaped sliding support 804 of the present invention can move along the X-direction, so that it moves synchronously with the slides 108 on both sides, ensuring the stability of the first transmission shaft 402 and the second transmission shaft 403.

[0049] Combination Figure 15 It can be seen that the material clamping structure (i.e., located at the feed end of the electromagnetic wire limiting groove) is located at the feed end of the electromagnetic wire limiting groove. Figure 3 The leftmost material-clamping structure is also fixed with a pair of electromagnetic wire-supporting mechanisms 500. The two electromagnetic wire-supporting mechanisms 500 are symmetrically arranged and fixed on the first clamping seat 302 and the second clamping seat 304 respectively. Each mechanism includes a lifting cylinder 501 (a linear cylinder, which can be a double piston rod cylinder or a guide rod cylinder) and a wire-supporting cylinder 502 (horizontally installed, preferably a double piston rod cylinder or a guide rod cylinder) driven by the lifting cylinder 501. The output end of the wire-supporting cylinder 502 is connected to an L-shaped electromagnetic wire support plate 503, which can drive the electromagnetic wire support plate 503 to move back and forth in the X direction. The lifting cylinder 501 drives the electromagnetic wire support plate 503 to move up and down, so that the two electromagnetic wire support plates 503 can alternately extend to the top of the electromagnetic wire limiting groove to meet the requirements of rapid material extraction. When the feeding mechanism 200 pulls the electromagnetic wire, the wire-supporting cylinder 502 drives the electromagnetic wire support plate 503 to extend above the electromagnetic wire limiting groove, supporting the electromagnetic wire being pulled. As the feeding mechanism 200 pulls the electromagnetic wire horizontally to the right, the electromagnetic wire supporting mechanism 500 assists in supporting the electromagnetic wire to ensure stable pulling. When the feeding mechanism 200 is about to reach its right position, its upper gripper 204c lifts, and the right end of the electromagnetic wire falls off the feeding mechanism 200. At the same time, the wire-supporting cylinder 502 drives the electromagnetic wire support plate 503 to retract synchronously, allowing the electromagnetic wire to enter the electromagnetic wire limiting groove. The pulling mechanism returns to the initial position on the left and pulls the next electromagnetic wire. This process is repeated to feed the electromagnetic wires one by one into the electromagnetic wire limiting groove, thus enabling continuous feeding of electromagnetic wires.

[0050] During actual installation, a pair of adjustable limiting members are installed on the rightmost material-clamping structure. Specifically, the supporting plate 314 is replaced by limiting members on this material-clamping structure. These limiting members are vertically positioned, with two plates located at corresponding positions in the electromagnetic wire limiting groove and having through holes for the electromagnetic wire to pass through. When multiple pairs of supporting plates lift the electromagnetic wire upwards, the limiting plates can limit the top surface of the electromagnetic wire. After flipping, the limiting plates rotate to a horizontal position, which can laterally limit the flipped electromagnetic wire, preventing it from loosening.

[0051] In practical operation, due to the thinness and length of the electromagnetic wire, the consistency of electromagnetic wires of the same specification is poor. Therefore, this invention includes a material feeding and limiting mechanism 600 installed on the rotary fixed base 407. Combined with... Figure 8 , 16 It is understood that the material extraction limiting mechanism 600 includes an electromagnetic wire support platform 601 fixed to one side of the rotary fixed base 407 and upper and lower limiting components and front and rear limiting components fixed to the top of the rotary fixed base 407. The front and rear limiting components include a dual-axis slide cylinder 602 and a pair of opening and closing claws 603 driven by the dual-axis slide cylinder 602. Each opening and closing claw 603 has a pair of vertically arranged rollers 604. The rollers 604 on the two opening and closing claws 603 form a limiting channel that cooperates with the electromagnetic wire. Two pairs of rollers 604 limit the electromagnetic wire in the front and rear directions. The upper and lower limiting components include a lower roller 605 fixed to the outlet side of the limiting channel and an upper roller 607 driven by a lifting cylinder 606. The lifting cylinder 606 is fixed to one of the opening and closing claws 603. When the two opening and closing claws are closed, the upper roller 607 and the lower roller 605 limit the electromagnetic wire in the Z direction relative to each other. The lifting cylinder 606 drives the upper roller 607 to descend, and the electromagnetic wire passes through the space between the upper roller 607 and the lower roller 605. During operation, the electromagnetic wire at the loading station first enters the extraction limiting mechanism 600. When the electromagnetic wire is exposed, the extraction mechanism 200 clamps the electromagnetic wire and moves it to the right.

[0052] Combination Figure 7It is known that the rotating base 404 is also equipped with a positioning mechanism 700 for pushing the electromagnetic wire into the feeding mechanism 300. The positioning mechanism 700 includes an X-axis cylinder 711 fixed to the rotating base and a Y-axis cylinder 712 connected to the X-axis cylinder 711. The Y-axis cylinder 712 is equipped with a push plate 713 for pushing the electromagnetic wire into the electromagnetic wire limiting groove. During actual pulling, after the feeding mechanism 200 pulls the material into place and the left end of the electromagnetic wire is not fully in place, the push plate can be adjusted to face the electromagnetic system using the X-axis cylinder, and then the push plate can be pushed to the right by the Y-axis cylinder to push it a certain length. Since the stroke of the Y-axis cylinder is fixed, its pushing length is fixed each time, thus ensuring that the left end of the electromagnetic wire is neat. After each push is completed, the Y-axis cylinder and the X-axis cylinder are reset, waiting for the push of the next electromagnetic wire.

[0053] The overall workflow of this invention is as follows: The X-axis moving mechanism 100 adjusts the entire invention to the feeding station of the electromagnetic wire, so that the material extraction limiting mechanism 600 corresponds to the electromagnetic wire feeding station; the electromagnetic wire at the feeding station enters the material extraction limiting mechanism 600, and when the electromagnetic wire moves to the right to the material extraction mechanism 200, the material extraction mechanism 200 clamps the electromagnetic wire and moves it to the right. When it is about to be in place, the electromagnetic wire is released and the electromagnetic wire support mechanism 500 retracts the electromagnetic wire support plate 503, so that the electromagnetic wire enters the electromagnetic wire limiting groove below. At this time, the material extraction mechanism 200 resets and extracts the next electromagnetic wire, while the positioning mechanism 700 is in place and pushes the electromagnetic wire into place. This process is repeated to complete the automatic feeding of multiple electromagnetic wires; when the weaving requirements are met, the support plate 314 rises to lift the electromagnetic wire upward, the material straightening and clamping structure clamps the electromagnetic wire, and the rotary motor 406 is started to achieve a 90-degree rotation of the electromagnetic wire.

[0054] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stranding device for a generator stator coil magnet wire, characterized by: The application relates to a horizontal erecting installation frame on the ground and an X-direction moving mechanism arranged on the installation frame, and further comprises a material extracting mechanism for extracting electromagnetic wires, a material straightening mechanism for straightening the electromagnetic wires, and a turnover mechanism for overturning the electromagnetic wires stacked in up-down mode by 90 degrees; the X-direction moving mechanism drives the material extracting mechanism, the material straightening mechanism and the turnover mechanism to horizontally reciprocate on the installation frame in the X direction, and a pair of sliding seats are arranged at the two ends of the installation frame; the two ends of a guide beam of the material extracting mechanism are connected with the sliding seats respectively, and a material extracting and clamping structure of the material extracting mechanism moves along the guide beam in the Y direction; the turnover mechanism comprises a rotating power source arranged on one of the sliding seats, a rotating table, and a first transmission shaft and a second transmission shaft arranged on the rotating table; the rotating power source is connected with the rotating table, and the other ends of the first transmission shaft and the second transmission shaft are rotatably connected with the other sliding seat; the material straightening mechanism has a plurality of material straightening and clamping structures fixedly connected with the first transmission shaft and the second transmission shaft.

2. A generator stator coil wire stranding apparatus according to claim 1, characterised in that: The X-direction moving mechanism comprises an X-direction power source arranged at one end of the installation frame and a steering gear box arranged at the other end of the installation frame; the X-direction power source comprises an X-direction motor and a double-output speed reducer in transmission connection with the X-direction motor; one output end of the double-output speed reducer is connected with an X-direction first screw rod, and the other output end is connected with a Y-direction shaft; the Y-direction shaft is connected with the input end of the steering gear box, and the output end of the steering gear box is connected with a second screw rod parallel to the first screw rod; one of the sliding seats is connected with the nut seat of the first screw rod, and the other sliding seat is connected with the nut seat of the second screw rod.

3. A generator stator coil wire stranding apparatus according to claim 2, characterised in that: The installation frame is provided with a pair of X-direction bases; the X-direction power source is arranged on one of the bases, and the steering gear box is arranged on one base; each base is provided with two X-direction sliding rails arranged at intervals; and the sliding seat is in sliding fit with the X-direction sliding rails through a sliding block.

4. The electromagnetic wire stranding device for a generator stator coil according to claim 1, characterized in that: The material extracting mechanism further comprises a Y-direction moving seat driven by a Y-direction power source and an L-shaped installation support arranged on the Y-direction moving seat; and the material extracting and clamping structure is arranged on the installation support.

5. A generator stator coil wire stranding apparatus as claimed in claim 4, wherein: The material extracting and clamping structure comprises an installation rod fixedly connected with the installation support and a fixing seat arranged at the end of the installation rod; the fixing seat is provided with an upper clamping jaw and a lower clamping jaw, and the upper clamping jaw is fixedly connected with a linear cylinder on the fixing seat; and a protection block is arranged on the clamping surface of the upper clamping jaw and the lower clamping jaw. The Y-direction power source comprises a Y-direction motor fixedly connected with the Y-direction moving seat and a third rack arranged on the guide beam; a third gear on the Y-direction motor is in mesh with the third rack; the Y-direction moving seat is in sliding fit with a pair of Y-direction sliding rails on the guide beam through a sliding block; and the Y-direction power source drives the Y-direction moving seat to reciprocate along the Y-direction sliding rails in the Y direction, so that the material extracting and clamping structure pulls the electromagnetic wires into the material straightening mechanism.

6. The electromagnetic wire stranding device for a generator stator coil according to claim 1, characterized in that: The rotating power source is a rotating motor, which is fixed on one of the sliding bases through a motor fixing base; the other sliding base is provided with a rotary fixing base corresponding to the motor fixing base, a rotating base corresponding to the rotary table is rotationally arranged on the rotary fixing base, one end of the first transmission shaft and the second transmission shaft is connected with the rotary table, and the other end is fixed on the rotating base, and the first transmission shaft and the second transmission shaft are arranged in an upper and lower inclined opposite position; a positioning mechanism for pushing the electromagnetic wire into the material guiding mechanism is further arranged on the rotating base.

7. A generator stator coil wire stranding apparatus according to claim 6, characterised in that: Each of the material guiding and holding structures comprises oppositely arranged first and second clamping units, the first and second clamping units of the plurality of material guiding and holding structures are matched to form an electromagnetic wire limiting groove, and the material guiding and holding structure is located above the electromagnetic wire limiting groove; the first clamping unit comprises a first clamping base with a clamping surface, the first transmission shaft passes through the first clamping base and is fixed with the first clamping base, and a first clamping block for protecting the electromagnetic wire is arranged on the clamping surface of each first clamping base; The second clamping unit comprises a second clamping base, the second transmission shaft sequentially passes through the lower part of the second clamping base of the plurality of material guiding and holding structures and is fixed, the upper part of each second clamping base has a mounting table, a holding cylinder is arranged on the mounting table, and the second clamping block on the clamping surface of the second clamping base is connected with the holding cylinder; the bottom of the first clamping base is fixed on the second clamping base below the second clamping block, and the first clamping base and the second clamping base form the electromagnetic wire limiting groove; The material guiding mechanism further comprises a holding motor fixed on the rotary table, a first shaft of the holding motor passes through each first clamping base, a plurality of first gears are arranged on the first shaft at intervals, a first rack is horizontally arranged on the first clamping base and engaged with the first gear, a rack seat of the first rack is fixed with the first clamping block through an L-shaped adapter plate, and the first clamping block is driven to reciprocate in the X direction.

8. A generator stator coil wire stranding apparatus according to claim 7, characterised in that: The material guiding mechanism further comprises a plurality of supporting assemblies, each supporting assembly comprises a pair of mounting plates fixed through a connecting plate and a supporting plate symmetrically arranged on the two mounting plates, and the connecting plate is located below the first clamping base; the material guiding mechanism further comprises a lifting motor arranged on the rotary table, a second shaft of the lifting motor is rotationally connected with the rotating base, and the second shaft is located above the second transmission shaft; the second shaft passes through the middle part of the second clamping base and is rotationally connected with each second clamping base, a plurality of second gears are arranged on the second shaft at intervals, a second rack engaged with the second gear is arranged on one of the mounting plates of each supporting assembly, and the second rack is vertically arranged; at least one pair of sliding blocks fixed on the second clamping base are respectively slidably matched with the vertical sliding rails of the two mounting plates.

9. A generator stator coil wire stranding apparatus according to claim 8, characterised in that: A pair of electromagnetic wire supporting mechanisms are fixedly connected to the first clamping seat and the second clamping seat of the material guiding and holding structure at the material feeding end of the electromagnetic wire limiting groove, and comprise a jacking cylinder and a wire supporting cylinder driven by the jacking cylinder, and the output end of the wire supporting cylinder is connected with an electromagnetic wire supporting plate.

10. The electromagnetic wire stranding device for a generator stator coil according to claim 7, characterized in that: The positioning mechanism comprises an X-direction cylinder fixedly connected to the rotating seat and a Y-direction cylinder connected to the X-direction cylinder, and the Y-direction cylinder is provided with a pushing plate for pushing the electromagnetic wire into the electromagnetic wire limiting groove; The rotating seat is further provided with a material drawing limiting mechanism, which comprises an electromagnetic wire supporting platform fixedly connected to one side of the rotary fixed seat, an upper and lower limiting assembly fixedly connected to the top of the rotary fixed seat, and a front and rear limiting assembly, the front and rear limiting assembly comprises a double-shaft sliding table cylinder and a pair of opening and closing claws driven by the double-shaft sliding table cylinder, each of the opening and closing claws is provided with a pair of vertically arranged rollers, and the rollers on the two opening and closing claws surround a limiting channel matched with the electromagnetic wire; the upper and lower limiting assembly comprises a lower roller fixedly connected to the outlet side of the limiting channel and an upper roller driven by a lifting cylinder, the upper roller and the lower roller are opposite to each other, the lifting cylinder drives the upper roller to descend, and the electromagnetic wire passes between the upper roller and the lower roller.

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