A transformer core lamination device and its operation method

Abstract

The present invention relates to the technical field of transformer core laminations, and specifically relates to a transformer core lamination device and its operation method, including an operation cabinet and a frame. The bottom of the frame is fixedly connected to the top of the operation cabinet. It also includes a lamination table, a loading table, a hopper, a pusher, a friction roller, a sheet sorting assembly, an anti-duplicate sheet assembly, and a lamination assembly. The lamination table is slidably installed vertically on the operation cabinet. The loading tables are symmetrically arranged on both sides of the lamination table and fixedly connected to the top of the operation table. The hopper is vertically movable and installed on the operation table. The hopper passes through the top wall of the operation table and is inserted and matched with the inner wall of the loading table. In order to prevent position deviation caused by duplicate sheets, the present invention applies a downward frictional force to the edge of the silicon steel sheet through the friction roller, which can push the bottom silicon steel sheet down. And since the two layers of silicon steel sheets are separated at the initial stage of movement, the bottom silicon steel sheet does not rise, and thus will not deviate in position due to falling, further improving the lamination accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer core laminations, and particularly relates to a transformer core lamination device and an operation method thereof. Background Art

[0002] The transformer core is the main magnetic circuit part in a transformer. It is usually assembled by stacking hot-rolled or cold-rolled silicon steel sheets with a relatively high silicon content and an insulating paint coated on the surface. The core and the coil wound around it form a complete electromagnetic induction system. Among them, the EI-type core is mainly composed of an E-type sheet and an I-type sheet. The E-type sheet has three protruding parts, shaped like the letter "E", and the I-type sheet is shaped like the letter "I". When assembling the transformer core, the I-type sheet is used to close the opening part of the E-type sheet, thus forming a complete magnetic circuit channel. This structure is simple and effective, and can meet the functional requirements of guiding magnetic flux in the transformer core.

[0003] Most of the existing transformer core lamination devices use devices such as robotic arms and suction cups to grab the positioned silicon steel sheets and move them to the corresponding positions of the laminated core, and then accurately place them on the already laminated silicon steel sheets. Its advantage is that it can save labor costs, but its disadvantage is that the lamination efficiency is relatively low. Especially for the EI-type core, when stacking, the E-sheets and I-sheets need to be placed alternately. For example, in the first layer, the E-sheet is placed first with the opening facing one side, and then the I-sheet is inserted to close the opening; in the second layer, the E-sheet is placed with the opening facing the other side, and then the I-sheet is inserted. Such alternating placement can reduce the air gap in the magnetic circuit, make the air gap in the magnetic circuit evenly distributed in different layers, avoid the air gap concentrating in one place, thereby reducing the magnetic resistance and effectively reducing the eddy current loss. In this way, when laminating the EI-type core, the robotic arm needs to turn 180 degrees every other layer of silicon steel sheets, further reducing the lamination efficiency.

[0004] Currently, there is also a transformer core lamination device that adopts a multi-station solution. It uses a horizontally movable suction cup holder to replace the robotic arm to move the silicon steel sheets for lamination, and is equipped with a pair of feeding stations, a pair of sheet sorting stations, and a stacking station. Different stations perform a single lamination step separately, and the two feeding stations are symmetrically arranged on both sides of the stacking station, and the two sheet sorting stations are respectively arranged between the two feeding stations and the stacking station, which well solves the problem of low efficiency caused by the need for the robotic arm to move and rotate the silicon steel sheets in the above solution, but there are still the following two problems.

[0005] First, the loading station and the wafer-aligning station are not compatible. During the process of moving silicon steel sheets from the loading station to the lamination station, it is necessary to pass through the wafer-aligning station to adjust the positions of the silicon steel sheets to ensure lamination accuracy, resulting in more space occupation and room for improvement in lamination efficiency. Second, when the suction cup holder grabs silicon steel sheets, it is necessary to prevent double sheets. In the prior art, the silicon steel sheets adsorbed at the bottom are shaken off by jiggling up and down. In the case of double sheets, the positions of the dropped silicon steel sheets are prone to shift, leading to a decrease in subsequent lamination accuracy and affecting the quality of the transformer. Summary of the Invention

[0006] The purpose of the present invention is to provide a transformer core lamination device and its operation method, which can integrate loading and wafer alignment into the same station, save space and improve lamination efficiency, and at the same time prevent position deviation caused by double sheets.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] Provide a transformer core lamination device, including an operation cabinet and a frame. The bottom of the frame is fixedly connected to the top of the operation cabinet. It also includes a lamination table, a loading table, a hopper, a wafer pusher, a friction roller, a wafer-aligning component, an anti-double-sheet component, and a lamination component. The lamination table is slidably installed on the operation cabinet vertically. The loading tables are symmetrically arranged on both sides of the lamination table and fixedly connected to the top of the operation table. The hopper is vertically movably installed on the operation table. The hopper passes through the top wall of the operation table and is inserted and matched with the inner wall of the loading table. The wafer pushers are symmetrically arranged on both sides of the hopper. The tops of the wafer pushers pass through the bottom wall of the hopper and are slidably connected to it. The friction rollers are symmetrically arranged on both sides of the loading table. The friction rollers are rotatably installed on the loading table vertically. The friction rollers are in mutual contact with one end of the silicon steel sheet. The wafer-aligning component is installed on the operation cabinet. The wafer-aligning component is used to drive the wafer pusher to slide horizontally. The anti-double-sheet component is installed on the loading table. The anti-double-sheet component is used to drive the friction roller to rotate. The lamination component is installed on the frame. The lamination component is used to adsorb and move the silicon steel sheet, and when adsorbing the silicon steel sheet, it cooperates with the wafer-aligning component to make the wafer pusher retract, facilitating the movement of the silicon steel sheet, and driving the friction roller to frictionally separate the silicon steel sheets.

[0009] Preferably, it further includes a pair of loading components. The loading component includes a hydraulic rod, a top plate, and a plurality of first tension springs. The bottom of the hydraulic rod is fixedly connected to the bottom wall of the operation cabinet. The telescopic end of the hydraulic rod passes through the bottom wall of the hopper and is fixedly connected to the bottom of the top plate. The top plate is fixedly connected to the inner wall of the hopper. The top of the wafer pusher passes through the top plate and is slidably connected to it. The tops of the plurality of first tension springs are respectively fixedly connected to the four corners of the bottom of the top plate. The bottom of the first tension spring is fixedly connected to the bottom wall of the hopper.

[0010] Preferably, the wafer arranging assembly further includes a bidirectional screw, a gear, and a rack. The bidirectional screw passes through the bottom of the hopper and is rotatably connected thereto. The bidirectional screw passes through the wafer paddles and is threadedly connected thereto. The thread grooves on the two wafer paddles have opposite directions. The two racks are respectively fixedly connected to the inner walls on both sides of the operation cabinet, and the rack meshes with the gear.

[0011] Preferably, the anti-duplicate wafer assembly further includes a first rotating shaft, a second rotating shaft, a pair of belt pulleys, and a unidirectional driving mechanism. The first rotating shaft and the second rotating shaft both pass through the top wall of the loading table and are rotatably connected thereto. The first rotating shaft and the second rotating shaft respectively pass through the two belt pulleys and are coaxially connected thereto. The two belt pulleys are driven by a belt. The unidirectional driving mechanism is installed on the loading table and is used to drive the second rotating shaft to rotate unidirectionally.

[0012] Preferably, the unidirectional driving mechanism includes a ratchet wheel, a push rod, a plurality of pawls, and a plurality of first springs. The ratchet wheel is coaxially connected to the periphery of the second rotating shaft. One end of the push rod is provided with a plurality of grooves. The pawl is rotatably connected to the inner wall of the groove. One end of the first spring is fixedly connected to the inner wall of the groove, and the other end of the first spring is fixedly connected to the pawl. A square groove is provided at the top of the hopper. The bottom of the push rod passes through the top wall of the loading table and is inserted into the square groove in a mating manner. When the push rod moves downward, the pawl abuts against the ratchet wheel, the pawl rotates and the ratchet wheel remains stationary. When the bottom of the push rod abuts against the bottom wall of the square groove, the two wafer paddles approach each other. When the push rod moves upward, the pawl meshes with the ratchet wheel, and the ratchet wheel rotates.

[0013] Preferably, the anti-duplicate wafer assembly further includes a pair of turntables, a pair of connecting rods, a pair of pressing plates, and a pair of sliding sleeves. The two turntables are coaxially connected to both ends of the second rotating shaft respectively. One end of the connecting rod is rotatably connected to the eccentric position on the side of the turntable away from the ratchet wheel. The other end of the connecting rod is hinged to one end of the pressing plate. The pressing plate passes through the sliding sleeve and is slidably connected thereto. The bottom of the sliding sleeve is fixedly connected to the top of the loading table.

[0014] Preferably, the laminating assembly includes a pair of slide rails, a pair of electric sliders, a cross beam, a hydraulic cylinder, a support frame, and two groups of electric control suction cups. The slide rails are fixedly connected to the inner wall of the frame body. The electric sliders are slidably connected to the periphery of the slide rails. Both ends of the cross beam are respectively fixedly connected to the two sliders. The top of the hydraulic cylinder is fixedly connected to the bottom of the cross beam. The bottom of the telescopic end of the hydraulic cylinder is fixedly connected to the top of the support frame. The two groups of electric control suction cups are symmetrically distributed on both sides of the hydraulic cylinder. Each group of electric control suction cups includes a plurality of electric control suction cups. The top of the electric control suction cup passes through the support frame and is fixedly connected thereto. The top of the push rod is fixedly connected to the support frame.

[0015] Preferably, it further includes a height adaptation component, which includes an insertion block, a plurality of second tension springs and a pair of second springs. One end of each second tension spring is fixedly connected to the top wall of the operating cabinet. The bottom of the lamination table passes through the top wall of the operating cabinet and is slidably connected thereto. The other ends of the plurality of second tension springs are respectively fixedly connected to the four corners of the bottom of the lamination table. A cavity is formed inside the operating cabinet. The insertion block is slidably connected to the cavity. One end of the second spring is fixedly connected to the insertion block, and the other end of the second spring is fixedly connected to the inner wall of the cavity. The top of the insertion block passes through the top wall of the cavity and is slidably connected thereto. One end of the lamination table is provided with a slot, and the inner wall of one end of the slot is of a toothed structure. One end of the insertion block passes through the side wall of the cavity and is engaged with the slot.

[0016] The present invention also provides an operating method for a transformer core lamination device, which includes the following steps. Step 1: A feeding component is provided on the operating cabinet, which can draw the hopper downward from the feeding table to facilitate patch replenishment, and can also eject the silicon steel sheets from the hopper to facilitate grasping by the electric control suction cup. Step 2: Through the sheet arranging component provided on the hopper, while the hopper rises to complete patch replenishment, the two paddles move away from each other, and the positions of the silicon steel sheets can be arranged. Step 3: Through the lamination component provided on the frame, the silicon steel sheets in the two feeding tables can be sequentially laminated onto the lamination table to complete the lamination operation. And the two feeding tables are respectively located on both sides of the lamination table, and the directions of the silicon steel sheets inside them are opposite, so that the directions of adjacent two layers of silicon steel sheets can be kept opposite while laminating. Step 4: An anti-duplicate sheet component is provided on the feeding table. During the process of the electric control suction cup lifting the silicon steel sheet, the friction rollers rotate in the reverse direction, which can push down the overlapping silicon steel sheets and drive the pressing plate to insert between two layers of silicon steel sheets to prevent the bottom silicon steel sheet from sticking.

[0017] The beneficial effects of the present invention:

[0018] 1. When laminating in the present invention, the electric control suction cup of the lamination component is used to grasp the silicon steel sheet. When the silicon steel sheet starts to rise, the friction rollers are driven to rotate in the reverse direction at the same time. By applying a downward frictional force to the edge of the silicon steel sheet through the friction rollers, when the silicon steel sheet has a duplicate sheet phenomenon, the bottom silicon steel sheet can be pushed down, thus preventing the occurrence of duplicate sheets. And since the two layers of silicon steel sheets are separated at the initial stage of movement and the bottom silicon steel sheet does not rise, it will not be displaced due to falling, further improving the lamination accuracy.

[0019] 2. By moving the hopper up and down to separate it from the feeding table, it is convenient to add silicon steel sheets into the hopper. During the process of the hopper rising after completing patch replenishment, the two paddles slide horizontally and move away from each other, and cooperate with the inner wall of the hopper to clamp the silicon steel sheets, which can adjust the positions of the silicon steel sheets, complete sheet arranging, and improve the lamination accuracy. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 。

[0022] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 。

[0023] Figure 3 is a schematic three-dimensional structure of the present invention Figure 3 。

[0024] Figure 4 is a schematic three-dimensional structure of the present invention Figure 4 。

[0025] Figure 5 is a split view of the structure of the operation cabinet of the present invention.

[0026] Figure 6 is a cross-sectional view of the structure of the operation cabinet of the present invention.

[0027] Figure 7 is a cross-sectional view of the structure of the hopper of the present invention Figure 1 。

[0028] Figure 8 is a cross-sectional view of the structure of the hopper of the present invention Figure 2 。

[0029] Figure 9 is a schematic view of the structure of the anti-duplicate sheet assembly of the present invention Figure 1 。

[0030] Figure 10 is a schematic view of the structure of the anti-duplicate sheet assembly of the present invention Figure 2 。

[0031] Figure 11 is a cross-sectional view of the structure of the push rod of the present invention.

[0032] Figure 12 is a schematic diagram of the structure of the laminated sheet assembly of the present invention.

[0033] Figure 13 is Figure 6 an enlarged view of the structure at A in

[0034] In the figure:

[0035] 1. Operating cabinet; 10. Cavity; 11. Frame; 12. Laminating table; 120. Slot; 13. Loading table; 14. Hopper; 140. Square groove; 15. Silicon steel sheet;

[0036] 2. Sheet sorting assembly; 20. Pusher; 21. Bi-directional screw; 22. Gear; 23. Rack;

[0037] 3. Anti-duplicate sheet assembly; 30. Friction roller; 31. First rotating shaft; 32. Second rotating shaft; 33. Pulley; 34. Unidirectional driving mechanism; 340. Ratchet; 341. Push rod; 342. Groove; 343. Pawl; 344. First spring; 35. Turntable; 36. Connecting rod; 37. Pressing plate; 38. Sliding sleeve;

[0038] 4. Laminating assembly; 40. Slide rail; 41. Electric slider; 42. Cross beam; 43. Hydraulic cylinder; 44. Support frame; 45. Electric control suction cup;

[0039] 5. Loading assembly; 50. Hydraulic rod; 51. Top plate; 52. First tension spring;

[0040] 6. Height adaptation assembly; 60. Insert block; 61. Second tension spring; 62. Second spring. Detailed implementation mode

[0041] The technical solution of the present invention will be further described below in conjunction with the drawings and through specific implementation modes.

[0042] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] In the description of the present invention, unless otherwise clearly specified and defined, if the term "connection" or the like is used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances.

[0045] As Figures 1 to 13 shown:

[0046] A transformer core lamination device and its operation method, including an operation cabinet 1 and a frame 11. The bottom of the frame 11 is fixedly connected to the top of the operation cabinet 1. Its main purpose is to support the lamination assembly 4, the lamination table 12, the feeding table 13 and other structures. It also includes a lamination table 12, a feeding table 13, a hopper 14, a pusher 20, a friction roller 30, a sheet arranging assembly 2, a double-sheet prevention assembly 3 and a lamination assembly 4. In this embodiment, there are a pair of feeding tables 13, hoppers 14, sheet arranging assemblies 2 and double-sheet prevention assemblies 3, and there are two pairs of pushers 20 and friction rollers 30. The lamination table 12 is slidably installed on the operation cabinet 1 vertically. The two feeding tables 13 are symmetrically arranged on both sides of the lamination table 12 and fixedly connected to the top of the operation table. The hopper 14 is vertically movably installed on the operation table. The hopper 14 passes through the top wall of the operation table and is inserted and matched with the inner wall of the feeding table 13. By moving the hopper 14 up and down to separate it from the feeding table 13, it is convenient to add silicon steel sheets 15 into the hopper 14. And the two hoppers 14 are respectively located on both sides of the lamination table 12, and the silicon steel sheets 15 inside are placed in opposite directions. Cooperating with two groups of electric control suction cups 45 to move the silicon steel sheets 15, the step of adjusting the direction of the silicon steel sheets 15 can be omitted during lamination, improving the lamination efficiency and accuracy. The pushers 20 are symmetrically arranged on both sides of the hopper 14. The top of the pusher 20 passes through the bottom wall of the hopper 14 and is slidably connected to it. During the upward movement of the hopper 14 after sheet replenishment, the pusher 20 is of a U-shaped structure and can be inserted between the inner walls of the silicon steel sheets 15, so that the two pushers 20 slide horizontally and move away from each other, cooperating with the inner wall of the hopper 14 to clamp the silicon steel sheets 15, and the position of the silicon steel sheets 15 can be adjusted to complete sheet arrangement. The friction rollers 30 are symmetrically arranged on both sides of the feeding table 13. The friction rollers 30 are rotatably installed on the feeding table 13 vertically. The friction rollers 30 are in contact with one end of the silicon steel sheets 15. The sheet arranging assembly 2 is installed on the operation cabinet 1 and is used to drive the pusher 20 to slide horizontally. The double-sheet prevention assembly 3 is installed on the feeding table 13 and is used to drive the friction roller 30 to rotate. The lamination assembly 4 is installed on the frame 11 and is used to adsorb and move the silicon steel sheets 15. When adsorbing the silicon steel sheets 15, it cooperates with the sheet arranging assembly 2 to make the pusher 20 retract, facilitating the movement of the silicon steel sheets 15, and driving the friction roller 30 to frictionally separate the silicon steel sheets 15. During lamination, the electric control suction cup 45 of the lamination assembly 4 grabs the silicon steel sheets 15. When the silicon steel sheets 15 start to rise, the friction roller 30 is driven to rotate in the opposite direction at the same time. By applying a downward frictional force to the edge of the silicon steel sheets 15 through the friction roller 30, when double sheets occur to the silicon steel sheets 15, the bottom silicon steel sheets 15 can be pushed down, thus preventing double-sheet situations. And because the two layers of silicon steel sheets 15 are separated at the initial stage of movement and the bottom silicon steel sheets 15 do not rise, they will not be displaced due to falling, further improving the lamination accuracy.

[0047] As Figures 1 to 8 shown:

[0048] It also includes a pair of loading components 5. The loading component 5 includes a hydraulic rod 50, a top plate 51 and a plurality of first tension springs 52. The bottom of the hydraulic rod 50 is fixedly connected to the bottom wall of the operation cabinet 1. The top of the telescopic end of the hydraulic rod 50 passes through the bottom wall of the hopper 14 and is fixedly connected to the bottom of the top plate 51. The top plate 51 is fixedly connected to the inner wall of the hopper 14. The top of the paddle 20 passes through the top plate 51 and is slidably connected to it. The tops of the plurality of first tension springs 52 are respectively fixedly connected to the four corners of the bottom of the top plate 51, and the bottoms of the first tension springs 52 are fixedly connected to the bottom wall of the hopper 14. Lower the telescopic end of the hydraulic rod 50. At this time, the first tension springs 52 contract, and the top plate 51 descends to the bottom of the hopper 14, and then continues to drive the hopper 14 to descend until it disengages from the loading table 13, thereby realizing patching. Lift the telescopic end of the hydraulic rod 50, first drive the hopper 14 to rise and enter the loading table 13. When the top of the hopper 14 abuts against the top wall of the loading table 13, continue to push the top plate 51 upward, and the first tension springs 52 are stretched, which can continue to lift the silicon steel sheets 15 in the hopper 14, so that the surface of the silicon steel sheets 15 at the top can always be in contact with the electric control suction cup 45 that has descended to the bottom, thus facilitating grasping.

[0049] As Figures 1 to 8 shown:

[0050] The sheet sorting component 2 also includes a bidirectional screw 21, a gear 22 and a rack 23. The bidirectional screw 21 passes through the bottom of the hopper 14 and is rotatably connected to it. The bidirectional screw 21 passes through the paddle 20 and is threadedly connected to it. The thread grooves on the two paddles 20 are in opposite directions. The two racks 23 are respectively fixedly connected to the inner walls on both sides of the operation cabinet 1, and the rack 23 meshes with the gear 22. When the hopper 14 rises to enter the loading table 13, at this time, the gear 22 and the rack 23 are meshed. As the hopper 14 continues to rise, through the meshing transmission between the two, the bidirectional screw 21 is driven to rotate, and through the threaded transmission between the bidirectional screw 21 and the two paddles 20, the two paddles 20 slide horizontally and move away from each other, so as to cooperate with the inner wall of the hopper 14 to squeeze and clamp the silicon steel sheets 15 inside it, thereby adjusting the positions of the silicon steel sheets 15 so that they are aligned vertically and fit together horizontally.

[0051] As Figures 1 to 11 shown:

[0052] The anti-duplicate sheet component 3 further includes a first rotating shaft 31, a second rotating shaft 32, a pair of pulleys 33 and a one-way driving mechanism 34. The first rotating shaft 31 and the second rotating shaft 32 both pass through the top wall of the loading table 13 and are rotatably connected thereto. The first rotating shaft 31 and the second rotating shaft 32 respectively pass through the two pulleys 33 and are coaxially connected thereto. The two pulleys 33 are driven by a belt. The one-way driving mechanism 34 is installed on the loading table 13 and is used to drive the second rotating shaft 32 to rotate in one direction. When the electro-controlled suction cup 45 grabs and lifts the silicon steel sheet 15, the second rotating shaft 32 is driven to rotate by the one-way driving mechanism, driving one of the pulleys 33 to rotate, and through the belt drive between the other two pulleys 33, the first rotating shaft 31 drives the two friction rollers 30 to rotate, and the rotation direction of the friction rollers 30 is opposite to the moving direction of the silicon steel sheet 15, so as to generate friction with the side wall of the silicon steel sheet 15. When the duplicate sheet phenomenon occurs, the silicon steel sheet 15 adsorbed at the bottom layer can be pushed down to prevent it from being lifted together with the upper-layer silicon steel sheet 15, achieving the anti-duplicate sheet effect. And because the bottom-layer silicon steel sheet 15 is not lifted, there will be no position deviation, further improving the lamination accuracy.

[0053] As Figures 1 to 11 shown:

[0054] The one-way driving mechanism 34 includes a ratchet wheel 340, a push rod 341, a plurality of pawls 343 and a plurality of first springs 344. The ratchet wheel 340 is coaxially connected to the outer periphery of the second rotating shaft 32. One end of the push rod 341 is provided with a plurality of grooves 342. The pawls 343 are rotatably connected to the inner wall of the grooves 342. One end of the first spring 344 is fixedly connected to the inner wall of the grooves 342, and the other end of the first spring 344 is fixedly connected to the pawls 343. A square groove 140 is provided at the top of the hopper 14. The bottom of the push rod 341 passes through the top wall of the loading table 13 and is in plug-in fit with the square groove 140. The push rod 341 moves up and down following the electro-controlled suction cup 45. When the push rod 341 moves downward, the pawl 343 abuts against the ratchet wheel 340, the pawl 343 rotates and the ratchet wheel 340 remains stationary. At this time, the push rod 341 drives the pawl 343 to move downward, and the ratchet wheel 340 presses the pawl 343 to make it rotate, and the first spring 344 is compressed, and the friction roller 30 is stationary to prevent affecting the silicon steel sheet 15 before grasping. When the bottom of the push rod 341 abuts against the bottom wall of the square groove 140, the two dial plates 20 approach each other. At this time, the bottom of the electro-controlled suction cup 45 is in contact with the silicon steel sheet 15. Due to the extrusion of the push rod 341, the hopper 14 slides down a certain distance in the loading table 13, so that the two dial plates 20 approach each other to prevent the clamping force of the dial plates 20 on the silicon steel sheet 15 from being too large during the subsequent lifting process. When the push rod 341 moves upward, the pawl 343 meshes with the ratchet wheel 340, and the ratchet wheel 340 rotates. At this time, the ratchet wheel 340 meshes and drives with the pawl 343 on the push rod 341. As the push rod 341 rises, the ratchet wheel 340 rotates and drives the friction roller 30 to work, achieving the anti-duplicate sheet effect.

[0055] As Figures 1 to 11 shown:

[0056] The anti-duplicate sheet assembly 3 further includes a pair of turntables 35, a pair of connecting rods 36, a pair of pressing plates 37 and a pair of sliding sleeves 38. The two turntables 35 are coaxially connected to both ends of the second rotating shaft 32 respectively. One end of the connecting rod 36 is rotatably connected to the eccentric position on the side of the turntable 35 away from the ratchet wheel 340. The other end of the connecting rod 36 is hinged to one end of the pressing plate 37. The pressing plate 37 passes through the sliding sleeve 38 and is slidably connected thereto. The bottom of the sliding sleeve 38 is fixedly connected to the top of the loading table 13. When the second rotating shaft 32 rotates, it drives the two turntables 35 to rotate simultaneously. By the turntable 35, one end of the connecting rod 36 is pushed to make a circular motion, and the other end thereof pushes the pressing plate 37 to slide horizontally along the sliding sleeve 38. Thus, when duplicate silicon steel sheets 15 are grabbed, the pressing plate 37 can be inserted into the gap between the two layers of silicon steel sheets 15 pushed out from the friction roller 30, and the bottom silicon steel sheet 15 is pressed to prevent it from adhering to the top silicon steel sheet 15, further achieving the anti-duplicate sheet effect.

[0057] As Figures 1 to 12 shown:

[0058] The lamination assembly 4 includes a pair of slide rails 40, a pair of electric sliders 41, a cross beam 42, a hydraulic cylinder 43, a support frame 44 and two groups of electric control suction cups 45. The slide rails 40 are fixedly connected to the inner wall of the frame body 11. The electric sliders 41 are slidably connected to the periphery of the slide rails 40. Both ends of the cross beam 42 are respectively fixedly connected to the two sliders. The top of the hydraulic cylinder 43 is fixedly connected to the bottom of the cross beam 42. The bottom of the telescopic end of the hydraulic cylinder 43 is fixedly connected to the top of the support frame 44. The two groups of electric control suction cups 45 are symmetrically distributed on both sides of the hydraulic cylinder 43. Each group of electric control suction cups 45 includes a plurality of electric control suction cups 45. The top of the electric control suction cup 45 passes through the support frame 44 and is fixedly connected thereto. The top of the push rod 341 is fixedly connected to the support frame 44. When the hydraulic cylinder 43 works to push the support frame 44 to descend, the positions of the two groups of electric control suction cups 45 respectively correspond to one of the loading tables 13 and the lamination table 12. The two groups of electric control suction cups 45 work respectively. The electric control suction cup 45 located on the top of the loading table 13 grabs the silicon steel sheet 15, and the electric control suction cup 45 located on the top of the lamination table 12 stacks the silicon steel sheet 15 adsorbed at its bottom on the top of the lamination table 12 and presses it downward to make it accurately stacked. Subsequently, the support frame 44 rises, and the electric slider 41 drives the hydraulic cylinder 43 together with the support frame 44 and the silicon steel sheet 15 to move horizontally along the guide rail. Subsequently, the above operations are repeated, and continuous lamination operations can be performed.

[0059] As Figures 1 to 13 shown:

[0060] It further includes a height adaptation component 6, and the height adaptation component 6 includes an insertion block 60, a plurality of second tension springs 61 and a pair of second springs 62. One end of each second tension spring 61 is fixedly connected to the top wall of the operation cabinet 1. The bottom of the lamination table 12 passes through the top wall of the operation cabinet 1 and is slidably connected thereto. The other ends of the plurality of second tension springs 61 are respectively fixedly connected to the four corners at the bottom of the lamination table 12. A cavity 10 is formed inside the operation cabinet 1. The insertion block 60 is slidably connected to the cavity 10. One end of the second spring 62 is fixedly connected to the insertion block 60, and the other end of the second spring 62 is fixedly connected to the inner wall of the cavity 10. The top of the insertion block 60 passes through the top wall of the cavity 10 and is slidably connected thereto. One end of the lamination table 12 is provided with a slot 120, and the inner wall of one end of the slot 120 is of a toothed structure. One end of the insertion block 60 passes through the side wall of the cavity 10 and is in snap-fit connection with the slot 120. When the electro-controlled suction cup 45 drives the silicon steel sheets 15 to be stacked on the top of the lamination table 12, and simultaneously presses downwards, the lamination table 12 slides downwards on the top of the operation cabinet 1. The inner wall of the slot 120 presses the insertion block 60 to slide horizontally towards the end away from the lamination table 12, and the second spring 62 is compressed. Subsequently, the second spring 62 rebounds to push one end of the insertion block 60 to be re-snap-fitted with the slot 120. Due to the toothed structure of the inner wall of the slot 120, each time the lamination table 12 is pressed down, the position where the insertion block 60 is snap-fitted with the slot 120 rises by a certain distance, so that although the height of the lamination table 12 decreases, it is always stable during the lamination gap, thereby keeping the height of the silicon steel sheets 15 on the top of the lamination table 12 always consistent with the height of the silicon steel sheets 15 in the loading table 13, preventing the offset caused by the dropping of the silicon steel sheets 15 during the lamination by the electro-controlled suction cup 45. After the lamination is completed, the insertion block 60 is pushed to be separated from the slot 120, and the second tension spring 61 rebounds to be able to pull the lamination table 12 to rise back to its original position.

[0061] This embodiment further provides an operation method for a transformer core lamination device, including the following steps. Step 1: The loading component 5 is arranged on the operation cabinet 1, which can draw the hopper 14 out of the loading table 13 downwards for convenient replenishment of sheets, and can also push the silicon steel sheets 15 out of the hopper 14 for convenient grasping by the electro-controlled suction cup 45. Step 2: Through the sheet arranging component 2 arranged on the hopper 14, while the hopper 14 rises to complete the sheet replenishment, the two paddle pieces 20 move away from each other, which can arrange the positions of the silicon steel sheets 15. Step 3: Through the lamination component 4 arranged on the frame body 11, the silicon steel sheets 15 in the two loading tables 13 can be sequentially stacked on the lamination table 12 to complete the lamination operation. And the two loading tables 13 are respectively located on both sides of the lamination table 12, and the directions of the silicon steel sheets 15 inside them are opposite, which can keep the directions of adjacent two layers of silicon steel sheets 15 opposite while laminating. Step 4: The anti-duplicate sheet component 3 is arranged on the loading table 13. During the process of the electro-controlled suction cup 45 lifting the silicon steel sheets 15, the friction rollers 30 rotate in the reverse direction, which can push the overlapping silicon steel sheets 15 down, and drive the pressing plate 37 to be inserted between two layers of silicon steel sheets 15 to prevent the bottom silicon steel sheets 15 from sticking.

[0062] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of clearly describing the positional relationship and functions between various components.

Claims

1. A transformer core lamination device, comprising an operation cabinet (1) and a frame body (11), wherein the bottom of the frame body (11) is fixedly connected to the top of the operation cabinet (1), and is characterized in that, It further includes a lamination table (12), a loading table (13), a hopper (14), a paddle (20), a friction roller (30), a sheet sorting assembly (2), an anti-duplicate sheet assembly (3) and a lamination assembly (4). The lamination table (12) is vertically slidably mounted on the operation cabinet (1). The loading tables (13) are symmetrically arranged on both sides of the lamination table (12) and fixedly connected to the top of the operation table. The hopper (14) is vertically movably mounted on the operation table. The hopper (14) passes through the top wall of the operation table and is inserted and matched with the inner wall of the loading table (13). The paddles (20) are symmetrically arranged on both sides of the hopper (14). The top of the paddle (20) passes through the bottom wall of the hopper (14) and is slidably connected thereto. The friction rollers (30) are symmetrically arranged on both sides of the loading table (13). The friction rollers (30) are vertically rotatably mounted on the loading table (13). One end of the friction roller (30) is in mutual contact with the silicon steel sheet (15). The sheet sorting assembly (2) is mounted on the operation cabinet (1) and is used to drive the paddle (20) to slide horizontally. The anti-duplicate sheet assembly (3) is mounted on the loading table (13) and is used to drive the friction roller (30) to rotate. The lamination assembly (4) is mounted on the frame (11) and is used to adsorb and move the silicon steel sheet (15). When adsorbing the silicon steel sheet (15), it cooperates with the sheet sorting assembly (2) to make the paddle (20) close up, which is convenient for moving the silicon steel sheet (15), and drives the friction roller (30) to frictionally separate the silicon steel sheets (15).

2. The lamination device for a transformer core according to claim 1, characterized in that, It further includes a pair of loading assemblies (5). The loading assembly (5) includes a hydraulic rod (50), a top plate (51) and a plurality of first tension springs (52). The bottom of the hydraulic rod (50) is fixedly connected to the bottom wall of the operation cabinet (1). The telescopic end of the hydraulic rod (50) passes through the bottom wall of the hopper (14) and is fixedly connected to the bottom of the top plate (51). The top plate (51) is fixedly connected to the inner wall of the hopper (14). The top of the paddle (20) passes through the top plate (51) and is slidably connected thereto. The tops of the plurality of first tension springs (52) are respectively fixedly connected to the four corners of the bottom of the top plate (51), and the bottoms of the first tension springs (52) are fixedly connected to the bottom wall of the hopper (14).

3. A transformer core lamination device according to claim 2, characterized in that, The sheet sorting assembly (2) further includes a bidirectional screw (21), a gear (22) and a rack (23). The bidirectional screw (21) passes through the bottom of the hopper (14) and is rotatably connected thereto. The bidirectional screw (21) passes through the paddle (20) and is threadedly connected thereto. The thread groove directions on the two paddles (20) are opposite. The two racks (23) are respectively fixedly connected to the inner walls on both sides of the operation cabinet (1). The rack (23) is meshed with the gear (22).

4. A transformer core lamination device according to claim 1, characterized in that The anti-duplication sheet assembly (3) further includes a first rotating shaft (31), a second rotating shaft (32), a pair of belt pulleys (33) and a one-way driving mechanism (34). The first rotating shaft (31) and the second rotating shaft (32) both pass through the top wall of the feeding table (13) and are rotatably connected thereto. The first rotating shaft (31) and the second rotating shaft (32) respectively pass through two belt pulleys (33) and are coaxially connected thereto. The two belt pulleys (33) are driven by a belt. The one-way driving mechanism (34) is installed on the feeding table (13), and the one-way driving mechanism (34) is used to drive the second rotating shaft (32) to rotate unidirectionally.

5. The lamination device of a transformer core according to claim 4, wherein The one-way driving mechanism (34) includes a ratchet wheel (340), a push rod (341), a plurality of pawls (343) and a plurality of first springs (344). The ratchet wheel (340) is coaxially connected to the outer periphery of the second rotating shaft (32). One end of the push rod (341) is provided with a plurality of grooves (342). The pawls (343) are rotatably connected to the inner wall of the grooves (342). One end of the first spring (344) is fixedly connected to the inner wall of the grooves (342), and the other end of the first spring (344) is fixedly connected to the pawls (343). A square groove (140) is formed at the top of the hopper (14). The bottom of the push rod (341) passes through the top wall of the feeding table (13) and is in plug-in fit with the square groove (140). When the push rod (341) moves downward, the pawl (343) abuts against the ratchet wheel (340), and the pawl (343) rotates while the ratchet wheel (340) remains stationary. When the bottom of the push rod (341) abuts against the bottom wall of the square groove (140), the two paddles (20) approach each other. When the push rod (341) moves upward, the pawl (343) meshes with the ratchet wheel (340), and the ratchet wheel (340) rotates.

6. The lamination device of a transformer core according to claim 5, characterized in that, The anti-duplication sheet assembly (3) further includes a pair of turntables (35), a pair of connecting rods (36), a pair of pressing plates (37) and a pair of sliding sleeves (38). The two turntables (35) are coaxially connected to both ends of the second rotating shaft (32). One end of the connecting rod (36) is rotatably connected to an eccentric position on the side of the turntable (35) away from the ratchet wheel (340). The other end of the connecting rod (36) is hinged to one end of the pressing plate (37). The pressing plate (37) passes through the sliding sleeve (38) and is slidably connected thereto. The bottom of the sliding sleeve (38) is fixedly connected to the top of the feeding table (13).

7. A transformer core lamination device according to claim 5, characterized in that The lamination assembly (4) includes a pair of slide rails (40), a pair of electric sliders (41), a cross beam (42), a hydraulic cylinder (43), a support frame (44), and two groups of electric control suction cups (45). The slide rails (40) are fixedly connected to the inner wall of the frame body (11). The electric sliders (41) are slidably connected to the periphery of the slide rails (40). The two ends of the cross beam (42) are respectively fixedly connected to the two sliders. The top of the hydraulic cylinder (43) is fixedly connected to the bottom of the cross beam (42). The bottom of the telescopic end of the hydraulic cylinder (43) is fixedly connected to the top of the support frame (44). The two groups of electric control suction cups (45) are symmetrically distributed on both sides of the hydraulic cylinder (43). Each group of electric control suction cups (45) includes a plurality of electric control suction cups (45). The tops of the electric control suction cups (45) pass through the support frame (44) and are fixedly connected thereto. The top of the push rod (341) is fixedly connected to the support frame (44).

8. A transformer core lamination device according to claim 1, wherein, It further includes a height adaptation assembly (6). The height adaptation assembly (6) includes an insertion block (60), a plurality of second tension springs (61), and a pair of second springs (62). One end of each second tension spring (61) is fixedly connected to the top wall of the operation cabinet (1). The bottom of the lamination table (12) passes through the top wall of the operation cabinet (1) and is slidably connected thereto. The other ends of the plurality of second tension springs (61) are respectively fixedly connected to the four corners of the bottom of the lamination table (12). A cavity (10) is formed inside the operation cabinet (1). The insertion block (60) is slidably connected to the cavity (10). One end of the second spring (62) is fixedly connected to the insertion block (60). The other end of the second spring (62) is fixedly connected to the inner wall of the cavity (10). The top of the insertion block (60) passes through the top wall of the cavity (10) and is slidably connected thereto. A slot (120) is formed at one end of the lamination table (12). The inner wall of one end of the slot (120) has a toothed structure. One end of the insertion block (60) passes through the side wall of the cavity (10) and is in snap-fit connection with the slot (120).

9. The operating method of a transformer core lamination device according to claim 7, characterized in that, It includes the following steps; Step 1: The feeding assembly (5) is arranged on the operation cabinet (1), which can draw the hopper (14) downward from the feeding table (13) to facilitate patch replenishment, and can also eject the silicon steel sheets (15) from the hopper (14) to facilitate grasping by the electric control suction cups (45); Step 2: Through the sheet sorting assembly (2) arranged on the hopper (14), when the hopper (14) rises to complete patch replenishment, the two paddles (20) move away from each other, and the positions of the silicon steel sheets (15) can be sorted; Step 3: Through the lamination assembly (4) arranged on the frame body (11), the silicon steel sheets (15) in the two feeding tables (13) can be sequentially laminated onto the lamination table (12) to complete the lamination operation. The two feeding tables (13) are respectively located on both sides of the lamination table (12), and the directions of the silicon steel sheets (15) inside them are opposite, so that the directions of adjacent two layers of silicon steel sheets (15) can be kept opposite during lamination; Step 4: An anti-duplication sheet assembly (3) is provided on the loading table (13). During the process of the electric control suction cup (45) lifting the silicon steel sheet (15), the friction roller (30) rotates reversely, which can push down the overlapped silicon steel sheets (15) and drive the pressing plate (37) to insert between two layers of silicon steel sheets (15) to prevent the bottom silicon steel sheet (15) from sticking.

Images