A method and apparatus for integrated lamination of large transformer cores.

Abstract

This invention belongs to the field of transformer manufacturing technology and discloses a method for integrated shearing and stacking of large transformer cores. The method involves sequentially shearing and punching coiled material into silicon steel sheets according to the structure and specifications of each layer of the core; transporting the sheared and punched silicon steel sheets sequentially to the stacking station; and stacking the silicon steel sheets in sequence through translation, rotation, and positioning operations. This invention also discloses an integrated shearing and stacking device for large transformer cores, including a fixed gantry, at least two conveying components located on the same straight line, a first stacking component, a rotating component, a second stacking component, a stacking platform, a positioning component, and a pressing component. This invention effectively integrates the shearing and stacking of core sheets into one unit, simplifying the stacking operation steps, reducing manual operation, and improving production efficiency and quality. This invention can achieve positioning of the positioning holes for silicon steel sheets of different types, offering good flexibility.

Description

Technical Field

[0001] This invention belongs to the field of transformer manufacturing technology, and specifically relates to a method for integrated lamination of large transformer cores. Background Technology

[0002] Large transformers are indispensable and crucial equipment in power systems. Their core, a core component, provides the magnetic circuit and directly impacts transformer performance. The current method for stacking large transformer cores involves shearing lap splints into cylindrical pieces, manually transporting them to the stacking station, and then manually assembling them. This method is inefficient, lacks quality and reliability control, requires a large area, and incurs high labor costs.

[0003] Existing shearing and stacking equipment is mainly used for stacking the cores of small transformers. Large transformers have large cores and large, thin silicon steel sheets. Existing large transformer core stacking equipment has shortcomings such as low efficiency, poor positioning, poor compatibility, and complex use and maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a method for integrated lamination of large transformer cores, which simplifies the lamination operation steps and improves lamination efficiency and quality.

[0005] The technical solution adopted in this invention is a method for integrated lamination of large transformer cores, comprising the following steps:

[0006] S1. Silicon steel sheets, cut and punched according to the structure and specifications of each layer of the iron core, are sequentially conveyed to the lamination station.

[0007] S2. Stack the silicon steel sheets in sequence through translation, rotation and positioning operations.

[0008] Furthermore, in step S1, each layer of the iron core consists of 2 yoke plates and 3 column plates, and the silicon steel sheet formed by shearing and punching in step S1 consists of yoke plates and column plates with positioning holes.

[0009] Step S2 specifically includes the following steps:

[0010] Two yokes are fed longitudinally to the upper sides of the stacking station. The yokes fall and rotate from longitudinal to transverse. The yokes are then picked up near the upper end of the stacking station and moved to the corresponding stacking position near the upper end of the stacking station. The yokes lose suction and fall to the corresponding stacking position. They are positioned through positioning holes and pressed against adjacent yokes before the yokes are stacked. A column is fed longitudinally to the upper side of the stacking station. The column is picked up, lowered, and moved to the upper side of the corresponding stacking position. The column loses suction and falls to the corresponding stacking position. It is first positioned through positioning holes and pressed against adjacent yokes before the column is stacked.

[0011] This invention also provides a large transformer core lamination assembly, comprising a fixed gantry, at least two conveying assemblies located on the same straight line, a first lamination assembly, a rotary assembly, a second lamination assembly, a stacking platform, a positioning assembly, and a pressing assembly. The conveying assemblies are fixed to the top of the fixed gantry. The first lamination assembly is vertically and flexibly mounted on the top of the fixed gantry, positioned between the at least two conveying assemblies. The stacking platform is located below the first lamination assembly. Two second lamination assemblies are provided, each positioned on one side of the stacking platform. Two rotary assemblies are provided to receive and rotate the silicon steel sheets on the conveying assemblies. The two rotary assemblies are positioned on the opposite sides of the stacking platform. Below the two second stacking assemblies, the second stacking assemblies can reciprocate between the rotary assembly and the stacking platform along the conveying direction of the conveying assembly, and the first stacking assembly can reciprocate along the conveying direction perpendicular to the conveying assembly. When the first stacking assembly is displaced to be on the same straight line as the conveying assembly, it can be used to convey silicon steel sheets. The positioning assembly is installed at the bottom of the first stacking assembly and the second stacking assembly for positioning the silicon steel sheets. The positioning assembly includes a positioning pin and a positioning pin adjustment mechanism, and the positioning pin adjustment mechanism is used to drive the positioning pin to move. Several pressing assemblies are provided on the bottom side of both the first stacking assembly and the second stacking assembly. The pressing assemblies are used to press the silicon steel sheets.

[0012] Preferably, the first stacking assembly includes a first frame, a belt conveyor, and a first drive mechanism. The first frame is mounted on the fixed gantry, the belt conveyor is mounted at the bottom of the first frame, and a permanent magnet is disposed inside the belt conveyor. The first drive mechanism includes a bracket, a synchronous motor, a multi-axis steering gear, a connecting shaft, a synchronous shaft, a lifting block, a first rack, and a first sliding groove. The bracket is disposed above the first frame, the synchronous motor is fixed on the bracket, and the synchronous motor is disposed in the middle of the connecting shaft via the multi-axis steering gear. Synchronous shafts are vertically disposed at both ends of the connecting shaft, and the connecting shaft and the synchronous shaft are connected through the multi-axis steering gear. The lifting block is connected to both ends of the synchronous shaft, and a first gear is installed inside the lifting block. The synchronous shaft is fixedly connected to the first gear, the first rack is meshed with the first gear, and the top of the first rack is fixedly connected to the bracket. One end of the first sliding groove is fixed to the top of the bracket, and the other end is slidably connected to the top of the fixed gantry.

[0013] Preferably, the rotary assembly includes a base, a platform, and a lifting and rotating mechanism; the lifting and rotating mechanism is disposed between the base and the platform, and includes a fixed plate and a liftable guide column. The fixed plate is located at the bottom of the platform and is rotatably connected to the platform. One end of the guide column is fixedly connected to the fixed plate, and the other end is disposed in the base. The lifting and rotating mechanism also includes a servo reducer disposed at the bottom of the platform.

[0014] Preferably, the platform has a plurality of through holes spaced apart, and the platform has a plurality of magnetic pillars spaced apart inside.

[0015] Preferably, the second stacking assembly includes a second frame, a second drive mechanism, and an adsorption mechanism; the second drive mechanism includes a servo motor, a second gear, a second rack, and a second sliding groove; the second frame is mounted on the fixed gantry; the servo motor is fixedly connected to the second frame; the second gear is drively connected to the output shaft of the servo motor; the second rack is meshed with the second gear and fixedly connected to the fixed gantry; the second sliding groove is fixedly connected to the second frame; a second guide rail is also provided on the fixed gantry; the second guide rail is slidably connected to the second sliding groove; and the adsorption mechanism is located at the bottom of the second frame.

[0016] Preferably, the adsorption mechanism includes a mounting frame, a vacuum suction cup, an adsorption cylinder, and an electromagnet. The mounting frame is fixedly connected to the bottom of the second frame, and several mounting frames are provided, arranged in parallel. The vacuum suction cup is connected to the adsorption cylinder, and the adsorption cylinder is fixedly connected to the middle position of the mounting frame along its length. Several electromagnets are provided, evenly spaced on the mounting frame, and located around the periphery of the adsorption cylinder.

[0017] Preferably, the positioning pin adjustment mechanism includes a positioning pin screw, a first slide rail, a first sliding frame, and a positioning gear. The positioning pin screw is arranged parallel to the first slide rail. The first sliding frame is movably sleeved on the positioning pin screw and the first slide rail. The first sliding frame is rotatably connected to the positioning pin screw and slidably connected to the first slide rail. The positioning gear is fixedly connected to both ends of the positioning pin screw. The positioning pin has a three-lobed structure and is fixed to one side of the first sliding frame.

[0018] Preferably, the pressing assembly includes a pressing rod, a pressing cylinder, a second sliding frame, and a second slide rail. The pressing cylinder drives the pressing rod to extend and retract. The pressing cylinder is fixedly connected to the second sliding frame, and the second sliding frame is slidably connected to the second slide rail.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention enables the stacking of large transformer cores. It integrates the core stacking function at the rear end of the shearing line, effectively combining the shearing and stacking of core sheets into one, simplifying the stacking operation steps, reducing manual operation steps, and allowing silicon steel sheets to be stacked while being transported in sequence. Furthermore, it enables the simultaneous stacking of multiple silicon steel sheets, significantly improving production efficiency and quality.

[0021] The positioning component of this invention has high positioning accuracy and high reliability. The positioning pin adopts a three-lobed structure, which can effectively correct the wafer position and ensure that each silicon steel sheet is stacked in the preset position, reducing the error caused by traditional manual operation and improving the stacking accuracy and consistency.

[0022] The first and second stacking assemblies of the present invention are both equipped with pressing components. When stacking silicon steel sheets, the pressing components can press adjacent silicon steel sheets together to prevent the wind waves generated by the high-speed stacking and high-speed falling from blowing the adjacent silicon steel sheets at the stacking station, and to prevent the position of the silicon steel sheets from being affected by adjusting the position of the silicon steel sheets. This enables high-speed stacking while ensuring the accuracy of the sheet material and reducing the impact.

[0023] The positioning pin and pressing assembly of the present invention are adjustable in position, which can adapt to the stacking of iron cores of different specifications and can realize the positioning of positioning holes of silicon steel sheets of different types, with good flexibility.

[0024] The second stacking assembly of the present invention has two functions: stacking of column sheets and conveying of yoke sheets. The equipment is compact in design, saves space, and improves stacking efficiency.

[0025] The second stack assembly of the present invention grips the yoke sheet by a vacuum chuck in the middle position, and then attracts the yoke sheet by electromagnets arranged around the perimeter. This gripping method has accurate adsorption position, compact structure, light weight, and can adapt to yoke sheets of different lengths and widths. It is more flexible than the method of using vacuum chucks all the way. Attached Figure Description

[0026] Figure 1 This is a schematic flowchart of the large transformer core shearing and stacking method of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the large transformer core shearing and stacking integrated lamination device of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure after the fixed gantry has been removed.

[0029] Figure 4 This is a schematic diagram of the structure of the first stacked assembly.

[0030] Figure 5 This is a schematic diagram of the first drive mechanism.

[0031] Figure 6 This is a schematic diagram of the rotary assembly.

[0032] Figure 7 This is a schematic diagram of the lifting and rotating mechanism of the rotary assembly.

[0033] Figure 8 This is a schematic diagram of the platform structure of the rotary assembly.

[0034] Figure 9 This is a schematic diagram of the structure of the second lamination assembly.

[0035] Figure 10 This is a bottom view of the structure of the second lamination assembly.

[0036] Figure 11 This is a schematic diagram of the adsorption mechanism of the second stacked assembly.

[0037] Figure 12 This is a schematic diagram of the positioning component.

[0038] Figure 13 This is a schematic diagram of the positioning pin of the positioning component.

[0039] Figure 14 This is a schematic diagram of the material pressing assembly.

[0040] Figure 15 This is a schematic diagram showing the positions of the positioning component and the pressing component on the first stack assembly.

[0041] Figure 16 This is a schematic diagram showing the positions of the positioning component and the pressing component on the second lamination assembly.

[0042] Figure 17 This is a schematic diagram of the stacking platform.

[0043] In the diagram: 100, fixed gantry;

[0044] 200. Conveying assembly; 201. First fixed magnetic belt conveyor; 202. Second fixed magnetic belt conveyor; 203. Third fixed magnetic belt conveyor; 204. Fourth fixed magnetic belt conveyor;

[0045] 300. First lamination assembly; 301. First frame; 302. Belt conveyor; 303. First drive mechanism; 304. Support; 305. Synchronous motor; 306. Multi-axis steering gear; 307. Connecting shaft; 308. Synchronous shaft; 309. Lifting block; 310. First rack; 311. First sliding groove;

[0046] 400, Rotary Component; 401, Base; 402, Table Plate; 403, Lifting and Rotating Mechanism; 404, Fixed Plate; 405, Guide Post; 406, Servo Reducer; 407, Through Hole; 408, Magnetic Column;

[0047] 500, Second Laminated Component; 510, Second Frame; 520, Second Driving Mechanism; 521, Servo Motor; 522, Second Gear; 523, Second Rack; 524, Second Sliding Groove; 530, Adsorption Mechanism; 531, Mounting Rack; 532, Vacuum Suction Cup; 533, Adsorption Cylinder; 534, Electromagnet;

[0048] 600, Stacking Platform; 601, Base; 602, Receiving Table; 603, Lifting Device;

[0049] 700, Positioning Component; 701, Positioning Pin; 702, Positioning Pin Adjustment Mechanism; 703, Positioning Pin Screw; 704, First Slide Rail; 705, First Sliding Frame; 706, Positioning Gear; 707, Pressure Rod;

[0050] 800, Pressure Component; 801, Pressure Rod; 802, Pressure Cylinder; 803, Second Sliding Frame; 804, Second Slide Rail. Specific Embodiment

[0051] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] Embodiment 1 [[ID=2​​​​​​​​​​​​​​​​​​​

[0059] Step S2 specifically includes the following steps:

[0060] Two yokes are fed longitudinally to the upper sides of the stacking station. The yokes fall and rotate from longitudinal to transverse. The yokes are then picked up near the upper end of the stacking station and moved to the corresponding stacking position near the upper end of the stacking station. The yokes lose suction and fall to the corresponding stacking position. They are positioned through positioning holes and pressed against adjacent yokes before the yokes are stacked. A column is fed longitudinally to the upper side of the stacking station. The column is picked up, lowered, and moved to the upper side of the corresponding stacking position. The column loses suction and falls to the corresponding stacking position. It is first positioned through positioning holes and pressed against adjacent yokes before the column is stacked.

[0061] Example 3

[0062] This invention also provides a large transformer core shearing and stacking integrated lamination device. First, it should be noted that the right end of the large transformer core shearing and stacking integrated lamination device of this invention is the silicon steel sheet outlet of the cross-cutting line. The cross-cutting line is used to punch and punch holes in the coiled material. The cross-cutting line is a conventional equipment used in the market.

[0063] like Figure 2As shown, the large transformer core shearing and stacking integrated laminating device of the present invention includes a fixed gantry 100, at least two conveying assemblies 200 located on the same straight line, a first laminating assembly 300, a rotating assembly 400, a second laminating assembly 500, a stacking platform 600, a positioning assembly 700, and a pressing assembly 800. The conveying assemblies 200 are fixed to the top of the fixed gantry 100. The first laminating assembly 300 is vertically and flexibly installed on the top of the fixed gantry 100 and is disposed between at least two of the conveying assemblies 200. The stacking platform 600 is located below the first laminating assembly 300. Two second laminating assemblies 500 are provided, and the two second laminating assemblies 500 are respectively disposed on both sides of the stacking platform 600. Two rotating assemblies 400 are provided for receiving and rotating the silicon steel sheets on the conveying assemblies 200. The two rotating assemblies 400 are respectively disposed on both sides of the stacking platform 600. The first stacking assembly 300 is located below the two second stacking assemblies 500. The second stacking assembly 500 can reciprocate between the rotary assembly 400 and the stacking platform 600 along the conveying direction of the conveying assembly 200. The first stacking assembly 300 can reciprocate along the conveying direction perpendicular to the conveying assembly 200. When the first stacking assembly 300 is displaced to be on the same straight line as the conveying assembly 200, it can be used to convey silicon steel sheets. The positioning assembly 700 is installed at the bottom of the first stacking assembly 300 and the second stacking assembly 500 for positioning the silicon steel sheets. The positioning assembly includes a positioning pin 701 and a positioning pin adjustment mechanism 702. The positioning pin adjustment mechanism 702 is used to drive the positioning pin 701 to move. A plurality of pressing assemblies 800 are provided on the bottom side of both the first stacking assembly 300 and the second stacking assembly 500. The pressing assemblies 800 are used to press the silicon steel sheets.

[0064] Example 4

[0065] Based on embodiment 3, the fixed gantry 100 has a truss structure, and the conveying assembly 200 is installed on the top of the fixed gantry 100 for conveying silicon steel sheets.

[0066] like Figure 3As shown, in this embodiment, the conveying assembly 200 is provided with four components: a first fixed magnetic belt conveyor 201, a second fixed magnetic belt conveyor 202, a third fixed magnetic belt conveyor 203, and a fourth fixed magnetic belt conveyor 204. Each of the four fixed magnetic belt conveyors includes a fixed magnetic belt conveyor roller, a fixed magnetic belt conveyor conveyor belt, a fixed magnetic belt conveyor motor, and a lifting magnetic plate. The fixed magnetic belt conveyor roller is rotatably connected to the fixed gantry 100. The fixed magnetic belt conveyor conveyor belt is sleeved on the fixed magnetic belt conveyor roller. The fixed magnetic belt conveyor motor is used to drive the fixed magnetic belt conveyor roller to rotate. The lifting magnetic plate is fixed on the conveyor belt and can form a magnetic field on the surface of the fixed magnetic belt conveyor belt. When the silicon steel sheet passes by, the attraction force of the lifting magnetic plate is used to attract the silicon steel sheet to the fixed magnetic belt conveyor belt, and the silicon steel sheet is conveyed forward together with the fixed magnetic belt conveyor belt.

[0067] The first fixed magnetic belt conveyor 201, the second fixed magnetic belt conveyor 202, the third fixed magnetic belt conveyor 203 and the fourth fixed magnetic belt conveyor 204 are located on the same straight line. The first fixed magnetic belt conveyor 201, the second fixed magnetic belt conveyor 202 and the third fixed magnetic belt conveyor 203 are arranged continuously. A first stacked plate assembly 300 is arranged between the third fixed magnetic belt conveyor 203 and the fourth fixed magnetic belt conveyor 204.

[0068] like Figure 4 As shown, the first stacking assembly 300 includes a first frame 301, a belt conveyor 302, and a first drive mechanism 303. The first stacking assembly 300 is used to pick up and move the column pieces from the conveying assembly 200 to the stacking platform 600 and to convey the yoke pieces. At least one first stacking assembly 300 is provided. In this embodiment, two first stacking assemblies 300 are provided to alternately complete the stacking of two side column pieces and one middle column piece, as well as the conveying of the lower yoke piece.

[0069] The first lamination assembly 300 is located above the stacking platform 600 and is used for conveying the lower yoke laminations of the iron core and stacking the laminations. The first frame 301 is mounted on the fixed gantry 100, and the belt conveyor 302 is mounted at the bottom of the first frame 301. The belt conveyor 302 includes rollers, a conveyor belt, a first motor, and permanent magnets. The rollers are rotatably connected to the first frame 301, and the conveyor belt is fitted onto the rollers. The first motor drives the rollers to rotate. The permanent magnets are mounted on the conveyor belt and can form a magnetic field on the surface of the conveyor belt. When silicon steel sheets pass by, the attraction force of the permanent magnets attracts the silicon steel sheets onto the conveyor belt, and they are conveyed forward along with the conveyor belt. When the first lamination assembly 300 is displaced to be on the same straight line as the conveyor assembly 200, the silicon steel sheets can be conveyed via the belt conveyor 302.

[0070] like Figure 5As shown, the first drive mechanism 303 includes a bracket 304, a synchronous motor 305, a multi-axis steering gear 306, a connecting shaft 307, a synchronous shaft 308, a lifting block 309, a first rack 310, and a first sliding groove 311.

[0071] A bracket 304 is positioned above the first frame 301. A synchronous motor 305 is fixed to the bracket 304. The synchronous motor 305 is positioned in the middle of the connecting shaft 307 via a multi-axis steering gear 306. Both ends of the connecting shaft 307 are vertically mounted with synchronous shafts 308. The connecting shaft 307 and the synchronous shaft 308 are connected via the multi-axis steering gear 306. The multi-axis steering gear 306 on the synchronous shaft 308 is located in the middle of the synchronous shaft 308. Both ends of the synchronous shaft 308 are connected with lifting blocks 309. A first gear is installed inside the lifting block 309. The synchronous shaft 308 is fixedly connected to the first gear. A first rack 310 is slidably mounted inside the lifting block 309. The first rack 310 is meshed with the first gear. The top of the first rack 310 is fixedly connected to the bracket 304. The synchronous motor 305 rotates, which in turn drives the connecting shaft 307, the synchronous shaft 308, and the first gear to rotate in sequence. The first rack 310 meshes with the first gear, converting the rotation into linear motion, thereby realizing the lifting and lowering of the belt conveyor 302.

[0072] One end of the first sliding groove 311 is fixed to the top of the bracket 304, and the other end of the first sliding groove 311 is installed on the first guide rail. The first guide rail is fixed to the top of the fixed gantry 100. The direction of the first sliding groove 311 is perpendicular to the conveying direction of the conveying assembly 200. The first sliding groove 311 is driven to move along the first guide rail by the second motor and the lead screw, thereby realizing the translation of the first stacked plate assembly 300 along the conveying direction of the conveying assembly 200.

[0073] The first drive mechanism 303 is an integrated mechanism that uses a synchronous motor 305 to drive multiple lifting blocks 309 to rise and fall along the first rack 310, and a second motor and a lead screw to drive the first sliding groove 311 to translate along the first guide rail. Lifting and translation can be performed simultaneously, improving work efficiency. Moreover, the structure is compact and reliable, ensuring smooth movement and achieving high rigidity and high precision.

[0074] like Figure 6 As shown, the rotary assembly 400 includes a base 401, a platform 402, and a lifting and rotating mechanism 403. The lifting and rotating mechanism 403 is used to control the lifting and rotating of the platform 402.

[0075] The base 401 is fixed to the ground, and a lifting and rotating mechanism is disposed between the base 401 and the platform 402. The lifting and rotating mechanism 403 includes a liftable guide column 405, such as... Figure 7As shown, in this embodiment, the lifting and rotating mechanism 403 includes a fixed plate 404, a guide column 405, and a cylinder. The fixed plate 404 is located at the bottom of the platform 402 and is rotatably connected to the platform 402. One end of the guide column 405 is fixedly connected to the fixed plate 404, and the other end is connected to the cylinder. The cylinder is disposed in the base 401. The cylinder uses compressed air to push the guide column 405 to move linearly, thereby realizing the lifting and lowering of the platform 402. The lifting and rotating mechanism also includes a servo reducer 406. The servo reducer 406 is fixedly connected to the bottom of the fixed plate 404. The output shaft of the servo reducer 406 passes through the fixed plate 404 and is fixedly connected to the platform 402. The servo reducer 406 is used to control the rotation of the platform 402.

[0076] like Figure 8 As shown, the platform 402 has several through holes 407 arranged at intervals, thereby reducing the suction resistance of the air film and the inertia of lifting and rotating, and improving the positioning accuracy.

[0077] Several magnetic pillars 408 are spaced apart inside the platform 402 for adsorbing the yoke sheet.

[0078] The second stacked assembly 500, such as Figure 9 As shown, it includes a second frame 510, a second drive mechanism 520, and an adsorption mechanism 530. The second stacking assembly 500 is used to adsorb and move yoke sheets from the rotary assembly 400 to the stacking platform 600.

[0079] The second drive mechanism 520 includes a servo motor 521, a second gear 522, a second rack 523, and a second sliding groove 524.

[0080] The second frame 510 is mounted on the fixed gantry 100. A servo motor 521 is fixedly connected to the second frame 510. A second gear 522 is driven by the output shaft of the servo motor 521. A second rack 523 meshes with the second gear 522 and is fixedly connected to the fixed gantry 100. A second sliding groove 524 is fixedly connected to the second frame 510. A second guide rail is also provided on the fixed gantry 100, passing through the second sliding groove 524 and slidably connected to it. The second stacking assembly 500 is driven by the second drive mechanism 520 to reciprocate between the rotary assembly 400 and the stacking platform 600 along the conveying direction of the conveying assembly 200.

[0081] The adsorption mechanism includes a mounting bracket 531, a vacuum suction cup 532, an adsorption cylinder 533, and an electromagnet 534. For example... Figure 10 and Figure 11As shown, mounting bracket 531 is fixedly connected to the bottom of the second frame 510. Several mounting brackets 531 are arranged in parallel. Vacuum suction cups 532 are connected to adsorption cylinders 533. The vacuum suction cups 532 generate a vacuum through the adsorption cylinders 533, thereby achieving the adsorption of the silicon steel sheet. The adsorption cylinders 533 are fixedly connected to the middle position along the length of the mounting bracket 531. Several vacuum suction cups 532 and adsorption cylinders 533 are evenly arranged. Several electromagnets 534 are evenly spaced on the mounting bracket 531, located around the periphery of the adsorption cylinders 533.

[0082] This invention uses several suction cylinders 533 with vacuum suction cups evenly distributed. After the vacuum suction cups 532 grasp the yoke, the yoke is then attracted by electromagnets arranged around the perimeter. This grasping method has accurate adsorption position, compact structure, light weight, and can adapt to yokes of different lengths and widths. It is more flexible than the method of using vacuum suction cups all the way.

[0083] The positioning component 700 includes a positioning pin 701 and a positioning pin adjustment mechanism 702. For example... Figure 12 As shown, the positioning pin 701 is mounted on the positioning pin adjustment mechanism 702. The positioning pin adjustment mechanism 702 is used to adjust the position of the positioning pin 701 to adapt to the hole spacing of the positioning holes of different types of silicon steel sheets.

[0084] like Figure 13 As shown, the positioning pin adjustment mechanism 702 includes a positioning pin screw 703, a first slide rail 704, a first sliding frame 705, and a positioning gear 706. The two ends of the positioning pin screw 703 are rotatably connected to the two ends of the first slide rail 704, and the positioning pin screw 703 and the first slide rail 704 are arranged parallel to each other. The first sliding frame 705 is movably sleeved on the positioning pin screw 703 and the first slide rail 704. The first sliding frame 705 is rotatably connected to the positioning pin screw 703 and slidably connected to the first slide rail 704. The two ends of the positioning pin screw 703 are fixedly connected to the positioning gear 706. The positioning gear 706 is driven to rotate by a motor, thereby causing the positioning pin screw 703 to rotate, realizing the horizontal displacement of the first sliding frame 705 on the first slide rail 704. The positioning pin 701 is fixed to one side of the first sliding frame 705, thus realizing the horizontal displacement of the positioning pin 701 and realizing the positioning of the positioning holes of silicon steel sheets of different sheet types.

[0085] The positioning pin 701 has a three-lobed structure, with each lobe equipped with a magnet that attracts the adjacent lobe to keep the positioning pin 701 in a closed state. During operation, the lower end of the positioning pin 701 is inserted into the positioning hole of the silicon steel sheet, and the positioning pin 701 opens to position the silicon steel sheet.

[0086] The present invention can remotely adjust the position of the positioning pin 701 with high positioning accuracy and high reliability, and can adapt to the hole spacing of different sheet types; the positioning pin 701 adopts a three-lobed structure, which can effectively correct the sheet position and improve the stacking accuracy.

[0087] like Figure 13 As shown, a pressure rod 707 is provided on one side of the positioning pin 701. The pressure rod 707 is fixed on the first sliding frame 705 and is driven by a cylinder, which is also fixed on the first sliding frame 705. After the positioning pin 701 is positioned, the positioning silicon steel sheet is first pressed by the pressure rod 707, and then the positioning pin 701 is raised. By applying pressure, the pressure rod 707 helps the silicon steel sheet maintain the correct position after the positioning pin 701 is disengaged. It can also prevent the silicon steel sheet from being displaced due to other operations, thereby improving the stacking accuracy.

[0088] The positioning component 700 is disposed at the bottom of the first stacking component 300 and the second stacking component 500, specifically, as follows: Figure 15 and Figure 16 As shown, the two ends of the first slide rail 704 are fixedly connected to the first frame 301 or the second frame 510.

[0089] The pressing assembly 800 is disposed on the bottom side of the first stacking assembly 300 and the second stacking assembly 500. For example... Figure 14 As shown, the pressing assembly 800 includes a pressing rod 801, a pressing cylinder 802, a second sliding frame 803, and a second slide rail 804. When a large piece of silicon steel sheet falls rapidly, it may cause other nearby silicon steel sheets to be blown away and displaced. The pressing assembly 800 can then fall down to press down and clamp the nearby silicon steel sheets.

[0090] The pressing cylinder 802 drives the pressing rod 801 to extend and retract. The pressing cylinder 802 is fixedly connected to the second sliding frame 803, which is slidably connected to the second slide rail 804. The second sliding frame 803 can be manually adjusted in position, or driven by a lead screw or a gear and rack. The pressing assembly 800 is movable to accommodate pressing silicon steel sheets of different shapes.

[0091] The pressing assembly 800 is disposed on the bottom side of the first stacking assembly 300 and the second stacking assembly 500, such as... Figure 15 and Figure 16 As shown, the two ends of the second slide rail 804 are fixedly connected to the first frame 301 or the second frame 510.

[0092] Stacking platform 600, such as Figure 17As shown, the assembly includes a base 601, a receiving platform 602, and a lifting device 603. The base 601 is fixed to the ground, and the lifting device 603 is located between the base 601 and the receiving platform 602 to control the lifting and lowering of the receiving platform 602. The lifting device 603 can be driven by hydraulic, pneumatic, or mechanical means. As the lamination process proceeds, the stacking height continuously increases, requiring the receiving platform 602 to be continuously lowered to maintain the top silicon steel sheet at the initial stacking height, facilitating the positioning and stacking of the first lamination assembly 300 and the second lamination assembly 500.

[0093] The working process of the large transformer core shearing and stacking integrated lamination device of the present invention is as follows:

[0094] Before operating the equipment, first adjust the positions of the positioning component 700 and the pressing component 800.

[0095] Stacking of steel sheets: The first stacking assembly 300 is displaced to be on the same straight line as the conveying assembly 200. The silicon steel sheets are sequentially fed to the first stacking assembly 300 by the first fixed magnetic belt conveyor 201, the second fixed magnetic belt conveyor 202, and the third fixed magnetic belt conveyor 203. The first stacking assembly 300 moves laterally to bring the steel sheets to the corresponding stacking position above the stacking platform 600. After reaching the position, the first drive mechanism 303 drives the belt conveyor 302 to fall. After falling to the appropriate position, the pressing assembly 800 presses the adjacent silicon steel sheets, the permanent magnet in the belt conveyor 302 rises, the steel sheets lose their attraction and fall, and the positioning pin 701 falls simultaneously and expands after falling to position the steel sheets. The positioned steel sheets are pressed by the pressing rod 707, and then the positioning pin 701 is raised, the pressing assembly 800 is raised, and the first drive mechanism 303 drives the belt conveyor 302 to rise.

[0096] Stacking of upper yoke plates: The upper yoke plates are sequentially fed to the top of the rotary assembly 400 by the first fixed magnetic belt conveyor 201, the second fixed magnetic belt conveyor 202, and the third fixed magnetic belt conveyor 203. The rotary assembly 400 rises to receive the upper yoke plates, then descends and rotates 90° simultaneously. At this time, the second stacking assembly 500 moves above the rotary assembly 400. The vacuum suction cup 532 of the adsorption mechanism 530 first picks up the middle part of the upper yoke plates, and then the electromagnet 534 is energized to pick up... The upper yoke sheet assembly and the second stacking assembly 500 move to above the stacking platform 600. The pressing assembly 800 falls down to press the adjacent silicon steel sheet. The electromagnet 534 is de-energized, the silicon steel sheet falls, the vacuum chuck 532 is vented, and the positioning pin 701 falls with the silicon steel sheet. After falling, the positioning pin 701 expands to perform positioning. The positioning silicon steel sheet is pressed by the pressing rod 707. Then the positioning pin 701 is raised, and the second stacking assembly 500 moves to the initial position to complete the upper yoke sheet stacking.

[0097] Stacking of lower yoke pieces: The first stacking assembly 300 is moved to be on the same straight line as the conveying assembly 200. The lower yoke pieces are sequentially fed to the top of the rotary assembly 400 by the first fixed magnetic belt conveyor 201, the second fixed magnetic belt conveyor 202, the third fixed magnetic belt conveyor 203, the first stacking assembly 300, and the fourth fixed magnetic belt conveyor 204. The rotary assembly 400 rises to receive the lower yoke pieces. The remaining steps are the same as the stacking of the upper yoke pieces, and will not be described again here.

[0098] This invention integrates the core stacking function at the rear end of the cross-cutting line, effectively integrating the cutting and stacking of core sheets into one, simplifying the stacking operation steps, reducing manual operation links, and allowing silicon steel sheets to be stacked while being conveyed in sequence. Multiple silicon steel sheets can be stacked at the same time, and column sheets, upper yoke sheets and lower yoke sheets can be stacked at the same time, which greatly improves production efficiency and quality.

[0099] Components and structures not described in detail in the embodiments are well-known components, common structures or common means in the industry, and will not be described in detail here.

Claims

1. A large transformer core lamination cutting and stacking integrated lamination device, characterized in that, The system includes a fixed gantry (100), at least two conveying assemblies (200) located on the same straight line, a first stacking assembly (300), a rotary assembly (400), a second stacking assembly (500), a stacking platform (600), a positioning assembly (700), and a pressing assembly (800). The conveying assemblies (200) are fixed to the top of the fixed gantry (100), and the first stacking assembly (300) is vertically and flexibly mounted on the top of the fixed gantry (100). (300) is disposed between at least two of the conveying assemblies (200), the stacking platform (600) is located below the first stacking assembly (300), two second stacking assemblies (500) are provided, the two second stacking assemblies (500) are respectively disposed on both sides of the stacking platform (600), and two rotary assemblies (400) are provided for receiving and rotating the silicon steel sheets on the conveying assembly (200), the two rotary assemblies (400) are respectively located on the two second stacking assemblies (200). Below the stacking assembly (500), the second stacking assembly (500) can reciprocate between the rotary assembly (400) and the stacking platform (600) along the conveying direction of the conveying assembly (200), and the first stacking assembly (300) can reciprocate along the conveying direction perpendicular to the conveying assembly (200). When the first stacking assembly (300) is displaced to be on the same straight line as the conveying assembly (200), it can be used to convey silicon steel sheets; the positioning assembly (700) is installed on The bottom of the first stacking assembly (300) and the second stacking assembly (500) is used for positioning silicon steel sheets. The positioning assembly includes a positioning pin (701) and a positioning pin adjustment mechanism (702). The positioning pin adjustment mechanism (702) is used to drive the positioning pin (701) to move. The bottom of the side of the first stacking assembly (300) and the second stacking assembly (500) are provided with a plurality of pressing assemblies (800). The pressing assemblies (800) are used to press the silicon steel sheets. The second stacking assembly (500) includes a second frame (510), a second drive mechanism (520), and an adsorption mechanism (530); the second drive mechanism (520) includes a servo motor (521), a second gear (522), a second rack (523), and a second sliding groove (524). The second frame (510) is mounted on the fixed gantry (100), the servo motor (521) is fixedly connected to the second frame (510), and the second gear (522) is connected to the servo motor (524). The output shaft of the motor (521) is driven and connected, the second rack (523) is meshed with the second gear (522), the second rack (523) is fixedly connected to the fixed gantry (100), the second sliding groove (524) is fixedly connected to the second frame (510), the fixed gantry (100) is also provided with a second guide rail, the second guide rail is slidably connected to the second sliding groove (524), and the adsorption mechanism (530) is provided at the bottom of the second frame (510); The positioning pin adjustment mechanism (702) includes a positioning pin screw (703), a first slide rail (704), a first sliding frame (705), and a positioning gear (706). The positioning pin screw (703) is arranged parallel to the first slide rail (704). The first sliding frame (705) is movably sleeved on the positioning pin screw (703) and the first slide rail (704). The first sliding frame (705) is rotatably connected to the positioning pin screw (703) and slidably connected to the first slide rail (704). The two ends of the positioning pin screw (703) are fixedly connected to the positioning gear (706). The positioning pin (701) has a three-lobed structure and is fixed to one side of the first sliding frame (705).

2. The large transformer core shearing and stacking integrated lamination device according to claim 1, characterized in that, The first stacking assembly (300) includes a first frame (301), a belt conveyor (302), and a first drive mechanism (303). The first frame (301) is mounted on the fixed gantry (100), and the belt conveyor (302) is mounted at the bottom of the first frame (301). A permanent magnet is provided inside the belt conveyor (302). The first drive mechanism (303) includes a bracket (304), a synchronous motor (305), a multi-axis steering gear (306), a connecting shaft (307), a synchronous shaft (308), a lifting block (309), a first rack (310), and a first sliding groove (311). The bracket (304) is disposed above the first frame (301), and the synchronous motor (305) is fixed on the bracket (304). (305) A multi-axis steering gear (306) is set in the middle of the connecting shaft (307). Both ends of the connecting shaft (307) are vertically arranged with synchronous shafts (308). The connecting shaft (307) and the synchronous shaft (308) are connected through the multi-axis steering gear (306). Both ends of the synchronous shaft (308) are connected with lifting blocks (309). A first gear is installed in the lifting block (309). The synchronous shaft (308) is fixedly connected to the first gear. The first rack (310) is meshed with the first gear. The top of the first rack (310) is fixedly connected to the bracket (304). One end of the first sliding groove (311) is fixed to the top of the bracket (304), and the other end is slidably connected to the top of the fixed gantry (100).

3. The large transformer core shearing and stacking integrated lamination device according to claim 1, characterized in that, The rotary assembly (400) includes a base (401), a platform (402), and a lifting and rotating mechanism (403). The lifting and rotating mechanism (403) is disposed between the base (401) and the platform (402). The lifting and rotating mechanism (403) includes a fixed plate (404) and a liftable guide column (405). The fixed plate (404) is located at the bottom of the platform (402) and is rotatably connected to the platform (402). One end of the guide column (405) is fixedly connected to the fixed plate (404), and the other end is disposed in the base (401). The lifting and rotating mechanism (403) also includes a servo reducer (406) disposed at the bottom of the platform (402).

4. The large transformer core lamination device according to claim 3, characterized in that, The platform (402) has a number of through holes (407) spaced apart, and the platform (402) has a number of magnetic pillars (408) spaced apart.

5. The large transformer core shearing and stacking integrated lamination device according to claim 1, characterized in that, The adsorption mechanism (530) includes a mounting frame (531), a vacuum suction cup (532), an adsorption cylinder (533), and an electromagnet (534). The mounting frame (531) is fixedly connected to the bottom of the second frame (510). Several mounting frames (531) are provided and arranged in parallel. The vacuum suction cup (532) is connected to the adsorption cylinder (533). The adsorption cylinder (533) is fixedly connected to the mounting frame (531) at the middle position along the length direction. Several electromagnets (534) are provided and arranged evenly at intervals on the mounting frame (531). The electromagnets (534) are located around the adsorption cylinder (533).

6. The large transformer core shearing and stacking integrated lamination device according to claim 1, characterized in that, The pressing assembly (800) includes a pressing rod (801), a pressing cylinder (802), a second sliding frame (803), and a second slide rail (804). The pressing cylinder (802) drives the pressing rod (801) to extend and retract. The pressing cylinder (802) is fixedly connected to the second sliding frame (803), and the second sliding frame (803) is slidably connected to the second slide rail (804).

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