Shearing and stacking integrated lamination method and device for large transformer iron core

Abstract

The invention belongs to the technical field of transformer manufacturing, and discloses a shearing and stacking integrated lamination method for a large transformer iron core, which comprises the following steps: sequentially shearing and punching a roll material into silicon steel sheets according to the structure and specification of each layer of the iron core, sequentially conveying the silicon steel sheets formed by shearing and punching to a lamination station, and stacking the silicon steel sheets through translation, rotation and positioning operation in sequence. The invention further discloses a large transformer iron core shearing and stacking integrated lamination device which comprises a fixed door frame, at least two conveying assemblies located on the same straight line, a first lamination assembly, a rotation assembly, a second lamination assembly, a material stacking platform, a positioning assembly and a material pressing assembly. The stacking operation steps are simplified, manual operation links are reduced, the production efficiency and quality are improved, positioning of the positioning holes of the silicon steel sheets of different sheet types can be achieved, and the flexibility is good.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer manufacturing, and in particular relates to a method for shearing and stacking integrated laminations of a large transformer iron core. Background Art

[0002] Large transformers are essential equipment in power systems. One of their core components, the iron core, is responsible for providing the magnetic circuit, which has a direct impact on the performance of the transformer. The existing stacking method for large transformer iron cores is: the iron core pieces are sheared by the transverse shearing line and stacked into columns, which are then manually transported to the stacking station and then manually stacked. This method is inefficient, the quality reliability is uncontrollable, the floor space is large, and the labor cost is high.

[0003] The existing shearing and stacking equipment is mainly used for the core stacking of small transformers. The core of large transformers is large in size, and the silicon steel sheets are large and thin. The existing large transformer core stacking equipment has the disadvantages of low efficiency, poor positioning, poor compatibility, and complex use and maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide a large transformer core shearing and stacking integrated lamination method, which simplifies the stacking operation steps and improves the stacking efficiency and quality.

[0005] The technical solution adopted by the present invention is a large transformer core shearing and stacking integrated lamination method, comprising the following steps: S1. The silicon steel sheets cut and punched according to the structure and specifications of each layer of the core are transported to the lamination station in sequence; S2. Stack the silicon steel sheets in sequence through translation, rotation and positioning operations.

[0006] Furthermore, the structure of each layer of the iron core in step S1 is composed of 2 yoke pieces and 3 column pieces, and the silicon steel sheets formed by shearing and punching in step S1 are yoke pieces and column pieces with positioning holes; Step S2 specifically includes the following steps: The two yokes are fed longitudinally to the top of the two sides of the stacking station respectively, the yokes fall down and rotate from the longitudinal direction to the transverse direction, the yokes are sucked up at the proximal end above the yokes and translated to the corresponding stacking position proximal end above the stacking station, the yokes lose suction and fall off to the corresponding stacking position, the adjacent column plates are positioned and pressed through the positioning holes, and then the yokes are stacked; the column plates are fed longitudinally to the top of the stacking station, the column plates are sucked up and lowered and translated to the top of the corresponding stacking position, the column plates lose suction and fall off to the corresponding stacking position, the adjacent yoke plates are positioned and pressed through the positioning holes, and then the column plates are stacked.

[0007] The present invention also provides a large transformer core shearing and stacking integrated lamination device, comprising a fixed gantry, at least two conveying assemblies located in the same straight line, a first lamination assembly, a rotating assembly, a second lamination assembly, a stacking platform, a positioning assembly, and a pressing assembly, wherein the conveying assembly is fixed to the top of the fixed gantry, the first lamination assembly can be lifted and lowered on the top of the fixed gantry, the first lamination assembly is arranged between at least two of the conveying assemblies, the stacking platform is located below the first lamination assembly, two second lamination assemblies are provided, and the two second lamination assemblies are respectively provided on both sides of the stacking platform, and two rotating assemblies are provided for receiving and rotating the silicon steel sheets on the conveying assembly, and the two rotating assemblies are respectively located at Below the two second stacking assemblies, the second stacking assembly can be reciprocated between the rotating assembly and the stacking platform along the conveying direction of the conveying assembly, and the first stacking assembly can be reciprocated along the conveying direction perpendicular to the conveying assembly. When the first stacking assembly is displaced to be in 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, and is used to position 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; a plurality of the pressing assemblies are provided at the bottom of the side surfaces of the first stacking assembly and the second stacking assembly, and the pressing assemblies are used to press the silicon steel sheets.

[0008] Preferably, the first stacking assembly includes a first frame, a belt conveyor and a first driving mechanism, the first frame is mounted on the fixed gantry, the belt conveyor is mounted on the bottom of the first frame, a permanent magnet is arranged in the belt conveyor, the first driving 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 arranged above the first frame, the synchronous motor is fixed on the bracket, the synchronous motor is arranged in the middle of the connecting shaft through the multi-axis steering gear, synchronous shafts are vertically arranged at both ends of the connecting shaft, the connecting shaft and the synchronous shaft are connected through the multi-axis steering gear, the lifting blocks are connected at both ends of the synchronous shaft, a first gear is installed in 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.

[0009] Preferably, the rotary assembly includes a base, a table, and a lifting and rotating mechanism; the lifting and rotating mechanism is arranged between the base and the table, and the lifting and rotating mechanism includes a fixed plate and a liftable guide column, the fixed plate is located at the bottom of the table, the fixed plate is rotatably connected to the table, one end of the guide column is fixedly connected to the fixed plate, and the other end is arranged in the base, and the lifting and rotating mechanism also includes a servo reducer arranged at the bottom of the table.

[0010] Preferably, a plurality of through holes are arranged at intervals on the table, and a plurality of magnetic columns are arranged at intervals inside the table.

[0011] Preferably, the second stacking assembly includes a second frame, a second driving mechanism, and an adsorption mechanism; the second driving 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 drivingly connected to the output shaft of the servo motor; the second rack is meshingly connected to the second gear; the second rack is 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 provided at the bottom of the second frame.

[0012] 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 a plurality of mounting frames are provided, and the plurality of mounting frames are 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 the length direction. A plurality of electromagnets are provided, and the plurality of electromagnets are evenly spaced and arranged on the mounting frame, and the electromagnets are located at the peripheral position of the adsorption cylinder.

[0013] Preferably, the positioning needle adjustment mechanism includes a positioning needle screw, a first slide rail, a first sliding frame, and a positioning gear. The positioning needle screw is arranged parallel to the first slide rail, and the first sliding frame is movably mounted on the positioning needle screw and the first slide rail. The first sliding frame is rotationally connected to the positioning needle screw, and the first sliding frame is slidingly connected to the first slide rail. Both ends of the positioning needle screw are fixedly connected to the positioning gear, and the positioning needle is a three-petal structure, and the positioning needle is fixed to one side of the first sliding frame.

[0014] 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.

[0015] The beneficial effects of the present invention are: The present invention can stack large transformer cores. The core stacking function is integrated at the rear end of the transverse shearing line, which effectively integrates the shearing and stacking of core sheets, simplifies the stacking operation steps, reduces manual operation links, and allows silicon steel sheets to be stacked while being transported in sequence, and multiple silicon steel sheets can be stacked simultaneously, greatly improving production efficiency and quality.

[0016] The positioning assembly of the present invention has high positioning accuracy and high reliability. The positioning pin adopts a three-petal structure, which can effectively correct the sheet position and ensure that each silicon steel sheet is stacked according to the preset position, reducing the errors caused by traditional manual operation and improving the stacking accuracy and consistency.

[0017] The first stacking assembly and the second stacking assembly of the present invention are both provided with pressing assemblies, which can press adjacent silicon steel sheets through the pressing assemblies when stacking silicon steel sheets, to prevent the wind and waves formed by the contact between high-speed stacking and high-speed falling from fanning the adjacent silicon steel sheets on the stacking station, and to prevent the position of the adjacent silicon steel sheets on the stacking station from being affected by adjusting the position of the silicon steel sheet, so that high-speed stacking can be achieved while ensuring the accuracy of the sheet material and reducing the impact.

[0018] The positions of the positioning pins and the material pressing assembly of the present invention are adjustable, and can adapt to the stacking of iron cores of different specifications, and can realize the positioning of the positioning holes of silicon steel sheets of different sheet types, and has good flexibility.

[0019] The second lamination assembly of the present invention has two functions of column lamination stacking and yoke lamination conveying. The equipment is compactly designed, saves space, and improves the stacking efficiency.

[0020] The second stacking assembly of the present invention grasps the yoke through the vacuum suction cup in the middle position, and then adsorbs the yoke through the electromagnets arranged on the periphery. 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 throughout. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic flow chart of the method for shearing and stacking integrated laminations of large transformer cores.

[0022] Figure 2 It is a structural schematic diagram of the large transformer core shearing and stacking integrated lamination device of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure after removing the fixed door frame.

[0024] Figure 4 It is a schematic structural diagram of the first lamination assembly.

[0025] Figure 5It is a structural schematic diagram of the first driving mechanism.

[0026] Figure 6 It is a schematic diagram of the structure of the rotary component.

[0027] Figure 7 It is a structural schematic diagram of the lifting and rotating mechanism of the rotary component.

[0028] Figure 8 A schematic diagram of the structure of the table of the rotary assembly.

[0029] Fig. 9 It is a schematic structural diagram of the second lamination assembly.

[0030] Fig.10 It is a bottom view structural schematic diagram of the second lamination assembly.

[0031] Fig.11 It is a schematic diagram of the structure of the adsorption mechanism of the second lamination assembly.

[0032] Fig.12 It is a structural diagram of the positioning component.

[0033] Fig.13 This is a schematic diagram of the structure of the positioning pin of the positioning component.

[0034] Fig.14 It is a structural schematic diagram of the pressing component.

[0035] Fig.15 It is a schematic diagram of the positions of the positioning assembly and the pressing assembly on the first stack assembly.

[0036] Fig.16 It is a schematic diagram of the positions of the positioning assembly and the pressing assembly on the second stacking assembly.

[0037] Fig.17 It is a structural schematic diagram of the stacking platform.

[0038] In the figure: 100, fixed door frame; 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; 300, first lamination assembly; 301, first frame; 302, belt conveyor; 303, first driving mechanism; 304, bracket; 305, synchronous motor; 306, multi-axis steering gear; 307, connecting shaft; 308, synchronous shaft; 309, lifting block; 310, first rack; 311, first sliding groove; 400, rotary assembly; 401, base; 402, table; 403, lifting and rotating mechanism; 404, fixed plate; 405, guide column; 406, servo reducer; 407, through hole; 408, magnetic column; 500, second lamination assembly; 510, second frame; 520, second driving mechanism; 521, servo motor; 522, second gear; 523, second rack; 524, second sliding slot; 530, adsorption mechanism; 531, mounting frame; 532, vacuum suction cup; 533, adsorption cylinder; 534, electromagnet; 600, stacking platform; 601, base; 602, receiving platform; 603, lifting device; 700, positioning assembly; 701, positioning needle; 702, positioning needle adjustment mechanism; 703, positioning needle screw; 704, first slide rail; 705, first slide frame; 706, positioning gear; 707, press rod; 800, material pressing assembly; 801, pressing rod; 802, material pressing cylinder; 803, second sliding frame; 804, second sliding rail. DETAILED DESCRIPTION

[0039] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1 like Figure 1 As shown, the large transformer core shearing and stacking integrated lamination method of the present invention comprises the following steps: S1. The silicon steel sheets cut and punched according to the structure and specifications of each layer of the core are transported to the lamination station in sequence.

[0041] S2. Stack the silicon steel sheets in sequence through translation, rotation and positioning operations.

[0042] Example 2 On the basis of Example 1, in this example, the shearing and lamination of a "sun" type iron core are used to illustrate. The "sun" type iron core is a sun-shaped iron core composed of two yoke columns and three columns arranged between the two yoke columns, wherein the yoke columns are formed by stacking a number of yoke column sheets layer by layer, and the three columns are formed by stacking a number of three-column sheets layer by layer, and each layer of the iron core is composed of an upper yoke sheet and a lower yoke sheet, and the three-column sheets include an upper side column sheet, a middle column sheet, and a lower side column sheet.

[0043] The structure of each layer of the iron core in step S1 is composed of 2 yoke sheets and 3 column sheets, and the silicon steel sheets formed by shearing and punching in step S1 are yoke sheets and column sheets with positioning holes.

[0044] Step S2 specifically includes the following steps: The two yokes are fed longitudinally to the top of the two sides of the stacking station respectively, the yokes fall down and rotate from the longitudinal direction to the transverse direction, the yokes are sucked up at the proximal end above the yokes and translated to the corresponding stacking position proximal end above the stacking station, the yokes lose suction and fall off to the corresponding stacking position, the adjacent column plates are positioned and pressed through the positioning holes, and then the yokes are stacked; the column plates are fed longitudinally to the top of the stacking station, the column plates are sucked up and lowered and translated to the top of the corresponding stacking position, the column plates lose suction and fall off to the corresponding stacking position, the adjacent yoke plates are positioned and pressed through the positioning holes, and then the column plates are stacked.

[0045] Example 3 The present invention also provides a large-scale transformer core shearing and stacking integrated lamination device. First of all, it should be explained that the right end of the large-scale transformer core shearing and stacking integrated lamination device of the present invention is the silicon steel sheet outlet of the cross-cutting line. The cross-cutting line is used to punch and punch the coiled material. The cross-cutting line is a conventional equipment used on the market.

[0046] like Figure 2 As shown, the large transformer core shearing and stacking integrated lamination device of the present invention includes a fixed gantry 100, at least two conveying assemblies 200 located on the same straight line, a first lamination assembly 300, a rotating assembly 400, a second lamination assembly 500, a stacking platform 600, a positioning assembly 700, and a pressing assembly 800. The conveying assembly 200 is fixed to the top of the fixed gantry 100, the first lamination assembly 300 can be installed on the top of the fixed gantry 100 in a liftable manner, the first lamination assembly 300 is arranged between at least two of the conveying assemblies 200, the stacking platform 600 is located below the first lamination assembly 300, the second lamination assembly 500 is provided with two, and the two second lamination assemblies 500 are respectively arranged on both sides of the stacking platform 600, the rotating assembly 400 is provided with two, which are used to receive and rotate the silicon steel sheets on the conveying assembly 200, and the two rotating assemblies 400 are respectively arranged on the two sides of the stacking platform 600. The first stacking assembly 300 is respectively located below the two second stacking assemblies 500, and the second stacking assembly 500 can be reciprocated between the rotating assembly 400 and the stacking platform 600 along the conveying direction of the conveying assembly 200. The first stacking assembly 300 can be reciprocated along the conveying direction perpendicular to the conveying direction of the conveying assembly 200. When the first stacking assembly 300 is moved to be in the same straight line with 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, and is used to position the silicon steel sheets. The positioning assembly includes a positioning pin 701 and a positioning pin adjustment mechanism 702, and the positioning pin adjustment mechanism 702 is used to drive the positioning pin 701 to move; a plurality of the pressing assemblies 800 are arranged on the bottom of the side of the first stacking assembly 300 and the second stacking assembly 500, and the pressing assembly 800 is used to press the silicon steel sheets.

[0047] Example 4 On the basis of Example 3, the fixed gantry 100 is a truss structure, and the conveying assembly 200 is installed on the top of the fixed gantry 100 for conveying silicon steel sheets.

[0048] like Figure 3 As shown, in this embodiment, four conveying components 200 are provided, namely 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. 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 all include fixed magnetic belt conveyor rollers, fixed magnetic belt conveyor conveyor belts, fixed magnetic belt conveyor motors and lifting magnetic plates. The fixed magnetic belt conveyor rollers are rotatably connected to the fixed gantry 100, the fixed magnetic belt conveyor conveyor belt is sleeved on the fixed magnetic belt conveyor rollers, the fixed magnetic belt conveyor motor is used to drive the fixed magnetic belt conveyor rollers to rotate, and the lifting magnetic plate is fixed on the conveyor belt, which can form a magnetic field on the surface of the fixed magnetic belt conveyor conveyor belt. When the silicon steel sheet passes by, the suction force of the lifting magnetic plate is used to adsorb the silicon steel sheet on the fixed magnetic belt conveyor conveyor belt and transport it forward along with the fixed magnetic belt conveyor conveyor belt.

[0049] 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, and the first stacking assembly 300 is arranged between the third fixed magnetic belt conveyor 203 and the fourth fixed magnetic belt conveyor 204.

[0050] like Figure 4 As shown, the first lamination assembly 300 includes a first frame 301, a belt conveyor 302, and a first driving mechanism 303. The first lamination assembly 300 is used to absorb and move the column sheet from the conveying assembly 200 to the stacking platform 600 and to transport the yoke sheet. At least one first lamination assembly 300 is provided. In this embodiment, two first lamination assemblies 300 are provided to alternately stack two side column sheets and one middle column sheet and transport the lower yoke sheet.

[0051] The first lamination assembly 300 is located above the stacking platform 600 and is used for conveying the lower yoke of the core and stacking the column sheets. The first frame 301 is installed on the fixed gantry 100, and the belt conveyor 302 is installed at the bottom of the first frame 301. The belt conveyor 302 includes a roller, a conveyor belt, a first motor and a permanent magnet. The roller is rotatably connected to the first frame 301, and the conveyor belt is sleeved on the roller. The first motor is used to drive the roller to rotate. The permanent magnet is installed on the conveyor belt and can form a magnetic field on the surface of the conveyor belt. When the silicon steel sheet passes by, the suction force of the permanent magnet is used to adsorb the silicon steel sheet on the conveyor belt and transport it forward with the conveyor belt. When the first lamination assembly 300 is displaced to be on the same straight line as the conveying assembly 200, the silicon steel sheet can be conveyed by the belt conveyor 302.

[0052] like Figure 5 As shown, the first driving 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 .

[0053] The bracket 304 is arranged above the first frame 301, and the synchronous motor 305 is fixed on the bracket 304. The synchronous motor 305 is arranged in the middle of the connecting shaft 307 through the multi-axis steering gear 306. Synchronous shafts 308 are vertically arranged at both ends of the connecting shaft 307. The connecting shaft 307 and the synchronous shaft 308 are connected through 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. Lifting blocks 309 are connected to both ends of the synchronous shaft 308. 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 slidably arranged in the lifting block 309. The first rack 310 is meshed with the first gear, and the top of the first rack 310 is fixedly connected to the bracket 304. The synchronous motor 305 rotates, driving the connecting shaft 307, the synchronous shaft 308, and the first gear to rotate in sequence. The first rack 310 is meshed and connected with the first gear to convert the rotation into linear motion, thereby realizing the lifting and lowering of the belt conveyor 302.

[0054] 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 by the second motor and the lead screw to move along the first guide rail, thereby realizing the translation of the first stacking assembly 300 along the conveying direction of the conveying assembly 200.

[0055] The first driving mechanism 303 adopts a synchronous motor 305 to drive multiple lifting blocks 309 to lift and lower 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. The lifting and translation can be carried out simultaneously to improve work efficiency. The structure is compact and reliable, which ensures the smoothness of movement and can achieve high rigidity and high precision lifting.

[0056] like Figure 6 As shown, the rotary assembly 400 includes a base 401, a table 402, and a lifting and rotating mechanism 403. The lifting and rotating mechanism 403 is used to control the lifting and rotation of the table 402.

[0057] The base 401 is fixed on the ground, and the lifting and rotating mechanism is arranged between the base 401 and the platform 402. The lifting and rotating mechanism 403 includes a lifting guide column 405. Figure 7 As shown, the lifting and rotating mechanism 403 in this embodiment includes a fixed plate 404, a guide column 405 and a cylinder. The fixed plate 404 is located at the bottom of the table 402 and is rotatably connected to the table 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 arranged 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 table 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 table 402. The servo reducer 406 is used to control the rotation of the table 402.

[0058] like Figure 8 As shown, a plurality of through holes 407 are arranged at intervals on the platform 402, thereby reducing the suction resistance of the air film and the inertia of lifting, lowering and rotating, and improving the positioning accuracy.

[0059] A plurality of magnetic columns 408 are arranged at intervals inside the platform 402 for adsorbing the yoke.

[0060] The second lamination assembly 500, such as Fig. 9 As shown, it includes a second frame 510, a second driving mechanism 520, and an adsorption mechanism 530. The second stacking assembly 500 is used to adsorb and move the yoke from the rotary assembly 400 to the stacking platform 600.

[0061] The second driving mechanism 520 includes a servo motor 521 , a second gear 522 , a second rack 523 , and a second sliding slot 524 .

[0062] The second frame 510 is mounted on the fixed gantry 100, the servo motor 521 is fixedly connected to the second frame 510, the second gear 522 is drivingly connected to the output shaft of the servo motor 521, the second rack 523 is meshingly connected to 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, and the fixed gantry 100 is also provided with a second guide rail, the second guide rail is penetrated in the second sliding groove 524, and the second guide rail is slidably connected to the second sliding groove 524. The second driving mechanism 520 drives the second stacking assembly 500 to move back and forth between the rotary assembly 400 and the stacking platform 600 along the conveying direction of the conveying assembly 200.

[0063] The adsorption mechanism includes a mounting frame 531, a vacuum suction cup 532, an adsorption cylinder 533, and an electromagnet 534. Fig.10 and Fig.11 As shown, the mounting frame 531 is fixedly connected to the bottom of the second frame 510, and there are several mounting frames 531, and the several mounting frames 531 are arranged in parallel. The vacuum suction cup 532 is connected to the adsorption cylinder 533, and the vacuum suction cup 532 generates a vacuum through the adsorption cylinder 533, thereby achieving the adsorption of the silicon steel sheet. The adsorption cylinder 533 is fixedly connected to the middle position of the mounting frame 531 along the length direction, and there are several vacuum suction cups 532 and adsorption cylinders 533 evenly arranged. There are several electromagnets 534, and the several electromagnets 534 are evenly spaced and arranged on the mounting frame 531, and the electromagnets 534 are located at the peripheral position of the adsorption cylinder 533.

[0064] The present invention uses a number of evenly distributed adsorption cylinders 533 with vacuum suction cups. After the yoke is grasped by the vacuum suction cup 532, the yoke is adsorbed by the electromagnets arranged at the periphery. 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 only vacuum suction cups.

[0065] The positioning assembly 700 includes a positioning pin 701 and a positioning pin adjustment mechanism 702. Fig.12 As shown, the positioning pin 701 is installed on the positioning pin adjustment mechanism 702, and 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 silicon steel sheets of different sheet types.

[0066] like Fig.13As shown, the positioning needle adjustment mechanism 702 includes a positioning needle screw 703, a first slide rail 704, a first sliding frame 705, and a positioning gear 706. The two ends of the positioning needle screw 703 are respectively rotatably connected to the two ends of the first slide rail 704, and the positioning needle screw 703 is arranged in parallel with the first slide rail 704. The first sliding frame 705 is movably sleeved on the positioning needle screw 703 and the first slide rail 704. The first sliding frame 705 is rotatably connected to the positioning needle screw 703, and the first sliding frame 705 is slidably connected to the first slide rail 704. The two ends of the positioning needle screw 703 are fixedly connected to the positioning gear 706. The positioning gear 706 is driven to rotate by a motor, so that the positioning needle screw 703 is rotated to realize the horizontal displacement of the first sliding frame 705 on the first slide rail 704. The positioning needle 701 is fixed to one side of the first sliding frame 705, that is, the horizontal displacement of the positioning needle 701 is realized, and the positioning of the positioning holes of silicon steel sheets of different sheet types is realized.

[0067] The positioning pin 701 is a three-petal structure, each petal is provided with a magnet that attracts the adjacent petal, so as to keep the positioning pin 701 in a closed state. When working, 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.

[0068] The present invention can remotely adjust the position of the positioning pin 701, and has high positioning accuracy and reliability, and can adapt to the hole spacing of different sheet types; the positioning pin 701 adopts a three-petal structure, which can effectively correct the sheet position and improve the stacking accuracy.

[0069] like Fig.13 As shown, a press rod 707 is provided on one side of the positioning pin 701, and the press rod 707 is fixed on the first sliding frame 705. The press rod 707 is driven by a cylinder, and the cylinder is fixed on the first sliding frame 705. After the positioning pin 701 is positioned, the silicon steel sheet to be positioned is first pressed by the press rod 707, and then the positioning pin 701 is raised. The press rod 707 applies pressure to help the silicon steel sheet maintain the correct position after the positioning pin 701 is separated, and can also prevent the displacement of the silicon steel sheet caused by other operations, thereby improving the lamination accuracy.

[0070] The positioning assembly 700 is disposed at the bottom of the first stack assembly 300 and the second stack assembly 500. Specifically, Fig.15 and Fig.16 As shown, both ends of the first slide rail 704 are fixedly connected to the first rack 301 or the second rack 510 .

[0071] The pressing assembly 800 is disposed at the bottom of the side of the first lamination assembly 300 and the second lamination assembly 500. Fig.14As shown, the pressing assembly 800 includes a pressing rod 801, a pressing cylinder 802, a second sliding frame 803, and a second sliding rail 804. A large silicon steel sheet falls quickly, which may cause other adjacent silicon steel sheets to be blown and displaced. The pressing assembly 800 can fall and press the adjacent silicon steel sheets.

[0072] The pressing cylinder 802 drives the pressing rod 801 to extend and retract, and 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. The second sliding frame 803 can be adjusted manually, or driven by a lead screw or a gear rack. The pressing assembly 800 can be moved to adapt to the pressing of silicon steel sheets of different sheet types.

[0073] The pressing assembly 800 is disposed at the bottom of the side of the first lamination assembly 300 and the second lamination assembly 500. Fig.15 and Fig.16 As shown, both ends of the second slide rail 804 are fixedly connected to the first rack 301 or the second rack 510 .

[0074] The stacking platform 600, such as Fig.17 As shown, it includes a base 601, a receiving platform 602, and a lifting device 603. The base 601 is fixed on the ground. The lifting device 603 is arranged between the base 601 and the receiving platform 602, and is used to control the lifting of the base receiving platform 602. The lifting device 603 can be driven by hydraulic pressure, air pressure, mechanical means, etc. As the lamination proceeds, the stacking height continues to increase, and the receiving platform 602 needs to be continuously lowered to keep the uppermost silicon steel sheet at the initial stacking height, so as to facilitate the positioning and stacking of the first lamination assembly 300 and the second lamination assembly 500.

[0075] The working process of the large transformer core shearing and laminating integrated lamination device of the present invention is as follows: Before the equipment is put into operation, the positions of the positioning assembly 700 and the pressing assembly 800 are first adjusted.

[0076] Column sheet stacking: the first stacking assembly 300 is displaced to be on the same straight line as the conveying assembly 200, and the silicon steel sheets are sequentially delivered 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 horizontally to bring the column sheets to the corresponding column sheet stacking position above the stacking platform 600; after reaching the position, the first driving mechanism 303 drives the belt conveyor 302 to fall, and 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 column sheets lose their attraction and fall, the positioning pin 701 follows and falls at the same time, and expands after falling, to position the column sheets, and the positioned column 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 driving mechanism 303 drives the belt conveyor 302 to rise.

[0077] The upper yoke stacking: The upper yoke is sequentially delivered 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, then descends and rotates 90°. At this time, the second stacking assembly 500 moves to the top of the rotary assembly 400. The vacuum suction cup 532 of the adsorption mechanism 530 first sucks up the middle part of the upper yoke, and then the electromagnet 534 is energized to suck up the upper yoke. The upper yoke sheet as a whole, the second stacking assembly 500 moves to the top of the stacking platform 600, the pressing assembly 800 falls, pressing the adjacent silicon steel sheets, the electromagnet 534 is powered off, the silicon steel sheets fall, the vacuum suction cup 532 is ventilated, the positioning needle 701 falls with the silicon steel sheets, and after falling, the positioning needle 701 expands for positioning, and the positioned silicon steel sheets are pressed by the pressing rod 707, and then the positioning needle 701 is raised, and the second stacking assembly 500 moves to the initial position to complete the stacking of the upper yoke sheet.

[0078] Lamination of the lower yoke: the first lamination assembly 300 is moved to be on the same straight line as the conveying assembly 200, and the lower yoke is sequentially conveyed to the top of the rotating 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 lamination assembly 300 and the fourth fixed magnetic belt conveyor 204, and the rotating assembly 400 is lifted up to receive the lower yoke, and the remaining steps are the same as those for the lamination of the upper yoke, and will not be repeated here.

[0079] The present invention integrates the core stacking function at the rear end of the transverse shearing line, effectively integrating the shearing and stacking of the core sheets, simplifying the stacking operation steps, reducing the manual operation links, and the silicon steel sheets can be stacked while being conveyed in sequence, and multiple silicon steel sheets can be stacked at the same time. The column sheets, upper yoke sheets and lower yoke sheets can be stacked at the same time, which greatly improves the production efficiency and quality.

[0080] Components and structures not described in detail in the embodiments are well-known components and common structures or common means in the industry and are not described one by one here.

Claims

1. A method for laminating large transformer core by shearing and laminating, characterized in that: The following steps are involved: S1. The silicon steel sheets cut and punched according to the structure and specifications of each layer of the core are transported to the lamination station in sequence; S2. Stack the silicon steel sheets in sequence through translation, rotation and positioning operations.

2. The large transformer core shearing and laminating method according to claim 1 is characterized in that: The structure of each layer of the iron core in step S1 is composed of 2 yoke pieces and 3 column pieces, and the silicon steel sheets formed by shearing and punching in step S1 are yoke pieces and column pieces with positioning holes; Step S2 specifically includes the following steps: S21. Stacking of a layer of iron core: 2 yokes are fed longitudinally to the upper sides of the stacking station respectively, the yokes fall down and rotate from longitudinal to transverse, the yokes are sucked up at the proximal end above the yokes and translated to the corresponding stacking position proximal end above the stacking station, the yokes lose suction and fall off to the corresponding stacking position, the adjacent column sheets are positioned and pressed through the positioning holes, and then the yokes are stacked; the column sheets are fed longitudinally to the upper side of the stacking station, the column sheets are sucked up and lowered and translated to the upper side of the corresponding stacking position, the column sheets lose suction and fall off to the corresponding stacking position, the adjacent yoke sheets are positioned and pressed through the positioning holes, and then the column sheets are stacked; S22, repeat step S21 until the stacking of the iron cores is completed.

3. A large transformer core shearing and laminating integrated lamination device, characterized in that: The invention comprises a fixed door frame (100), at least two conveying assemblies (200) located on the same straight line, a first stacking assembly (300), a rotating assembly (400), a second stacking assembly (500), a stacking platform (600), a positioning assembly (700), and a pressing assembly (800), wherein the conveying assembly (200) is fixed to the top of the fixed door frame (100), the first stacking assembly (300) is liftably mounted on the top of the fixed door frame (100), and the first stacking assembly (500) is (300) is arranged 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 arranged, and the two second stacking assemblies (500) are respectively arranged on both sides of the stacking platform (600), and two rotating assemblies (400) are arranged for receiving and rotating the silicon steel sheets on the conveying assembly (200), and the two rotating assemblies (400) are respectively located on the two second The second stacking assembly (500) is disposed below the stacking assembly (500), the second stacking assembly (500) can be reciprocated between the rotating assembly (400) and the stacking platform (600) along the conveying direction of the conveying assembly (200), the first stacking assembly (300) can be reciprocated along a conveying direction perpendicular to the conveying assembly (200), and the first stacking assembly (300) can be used to convey silicon steel sheets when the first stacking assembly (300) is displaced to be located on the same straight line as the conveying assembly (200); the positioning assembly (700) is installed at The bottom of the first stack assembly (300) and the second stack assembly (500) is used to position the silicon steel sheet, and the positioning assembly comprises a positioning pin (701) and a positioning pin adjustment mechanism (702), and the positioning pin adjustment mechanism (702) is used to drive the positioning pin (701) to move; a plurality of pressing assemblies (800) are provided at the bottom of the side of the first stack assembly (300) and the second stack assembly (500), and the pressing assemblies (800) are used to press the silicon steel sheet.

4. The large transformer core shearing and laminating integrated lamination device according to claim 3 is characterized in that: The first lamination assembly (300) comprises a first frame (301), a belt conveyor (302) and a first driving mechanism (303); the first frame (301) is mounted on the fixed gantry (100); the belt conveyor (302) is mounted on the bottom of the first frame (301); a permanent magnet is arranged in the belt conveyor (302); the first driving mechanism (303) comprises 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 arranged above the first frame (301); the synchronous motor (305) is fixed on the bracket (304); the synchronous motor (305) is (305) is arranged in the middle of the connecting shaft (307) through a multi-axis steering gear (306), and synchronization shafts (308) are vertically arranged at both ends of the connecting shaft (307). The connecting shaft (307) and the synchronization shaft (308) are connected through the multi-axis steering gear (306), and both ends of the synchronization shaft (308) are connected to the lifting block (309), and a first gear is installed in the lifting block (309), the synchronization shaft (308) is fixedly connected to the first gear, the first rack (310) is meshed with the first gear, and 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 door frame (100).

5. The large transformer core shearing and laminating integrated lamination device according to claim 3 is characterized in that: The rotary assembly (400) includes a base (401), a table (402), and a lifting and rotating mechanism (403); the lifting and rotating mechanism (403) is arranged between the base (401) and the table (402), and 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 table (402), and the fixed plate (404) is rotatably connected to the table (402); one end of the guide column (405) is fixedly connected to the fixed plate (404), and the other end is arranged in the base (401); the lifting and rotating mechanism (403) also includes a servo reducer (406) arranged at the bottom of the table (402).

6. The large transformer core shearing and laminating integrated lamination device according to claim 5, characterized in that: A plurality of through holes (407) are arranged at intervals on the platform (402), and a plurality of magnetic columns (408) are arranged at intervals inside the platform (402).

7. The large transformer core shearing and laminating integrated lamination device according to claim 3 is characterized in that: The second lamination assembly (500) comprises a second frame (510), a second driving mechanism (520), and an adsorption mechanism (530); the second driving mechanism (520) comprises 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 door frame (100); the servo motor (521) is fixedly connected to the second frame (510); the second gear (522) and the servo motor (523) are connected to the second frame (510); The output shaft of the motor (521) is drivingly connected, the second rack (523) is meshingly connected with the second gear (522), the second rack (523) is fixedly connected with the fixed door frame (100), the second sliding groove (524) is fixedly connected with the second frame (510), the fixed door frame (100) is also provided with a second guide rail, the second guide rail is slidably connected with the second sliding groove (524), and the adsorption mechanism (530) is arranged at the bottom of the second frame (510).

8. The large transformer core shearing and laminating integrated lamination device according to claim 7, characterized in that: The adsorption mechanism (530) comprises 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); a plurality of mounting frames (531) are provided, and the plurality of mounting frames (531) are arranged in parallel; the vacuum suction cup (532) is connected to the adsorption cylinder (533), and the adsorption cylinder (533) is fixedly connected to the middle position of the mounting frame (531) along the length direction; a plurality of electromagnets (534) are provided, and the plurality of electromagnets (534) are evenly spaced and arranged on the mounting frame (531); and the electromagnets (534) are located at peripheral positions of the adsorption cylinder (533).

9. The large transformer core shearing and laminating integrated lamination device according to claim 3, characterized in that: The positioning needle adjustment mechanism (702) comprises a positioning needle screw (703), a first slide rail (704), a first sliding frame (705), and a positioning gear (706); the positioning needle screw (703) is arranged in parallel with the first slide rail (704); the first sliding frame (705) is movably mounted on the positioning needle screw (703) and the first slide rail (704); the first sliding frame (705) is rotationally connected to the positioning needle screw (703); the first sliding frame (705) is slidingly connected to the first slide rail (704); both ends of the positioning needle screw (703) are fixedly connected to the positioning gear (706); the positioning needle (701) is a three-petal structure; the positioning needle (701) is fixed to one side of the first sliding frame (705).

10. The large transformer core shearing and laminating integrated lamination device according to claim 3, characterized in that: The pressing assembly (800) comprises 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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