A high-precision core lamination device

Abstract

The application discloses a high-precision iron core lamination device, relates to the technical field of iron core processing, and comprises a workbench, the workbench is provided with a placing plate, the placing plate is provided with a center column for sleeving silicon steel sheets, the workbench is circumferentially provided with a plurality of strip plates around the center column, and the extension line of the length direction of the strip plate passes through the center of the center column; the strip plate is provided with a sliding groove in the length direction, an alignment rod is slidably arranged in the sliding groove, the alignment rod is arranged in the up-down direction, and the alignment rod is located in the groove of the silicon steel sheet and can be attached to the inner walls of the two sides of the groove; through the attachment of the alignment rod and the groove of the silicon steel sheet, the manual alignment mode is replaced, the overall alignment of the silicon steel sheet is realized by sliding the alignment rod to engage the groove of the silicon steel sheet, each silicon steel sheet can quickly find the accurate position with the help of the alignment rod, the deviation caused by manual visual judgment and manual adjustment is eliminated, meanwhile, the operation is convenient, and the lamination efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of iron core processing technology, and in particular to a high-precision iron core lamination device. Background Technology

[0002] In power transformers, motors, and other electrical equipment, the iron core is a key structure for electromagnetic energy conversion, and its performance directly affects the equipment's efficiency, losses, and operational stability. The iron core is typically composed of multiple laminated silicon steel sheets. This laminated structure effectively reduces eddy current losses and improves equipment efficiency. To ensure the iron core possesses good magnetic permeability and structural strength, extremely high requirements are placed on the neatness and flatness of the laminated sheets. The positional accuracy of each silicon steel sheet needs to be strictly controlled; otherwise, it will lead to an obstructed magnetic circuit in the iron core, increased losses, and even affect the service life of the entire equipment. In existing iron core lamination devices, a central post is typically used as the positioning reference for lamination. During the lamination operation, the operator needs to manually place the silicon steel sheets one by one onto the central post. During placement, in order to make the lamination tighter, the operator also needs to continuously rotate the iron core already placed on the central post. The slight force generated by the rotation is used to fine-tune the position of the silicon steel sheets, striving to ensure that each sheet maintains a good alignment with the previous one. Regarding the aforementioned technologies, the inventors believe that during the manual rotation and alignment process, the minute deviations of each silicon steel sheet will accumulate continuously. As the number of sheets increases, this cumulative error will gradually expand, affecting the overall verticality and edge neatness of the iron core. Utility Model Content

[0003] The purpose of this application is to provide a high-precision iron core lamination device to improve the problem of large cumulative errors caused by manually rotating and aligning silicon steel sheets one by one.

[0004] This application provides a high-precision iron core lamination device, which adopts the following technical solution: A high-precision iron core lamination device includes a worktable with a placement plate. The placement plate has a central column for mounting silicon steel sheets. Several strips are arranged around the central column on the worktable, with the extension line of the strips passing through the center of the central column. Each strip has a groove along its length, and an alignment rod is slidably arranged in the groove. The alignment rod is arranged vertically and is located within the groove of the silicon steel sheet, and can fit against the inner walls of the groove on both sides.

[0005] By adopting the above technical solution, the alignment rod is attached to the groove of the silicon steel sheet, replacing the manual alignment method. The silicon steel sheet is aligned as a whole by sliding the alignment rod to engage the groove of the silicon steel sheet. Each silicon steel sheet can quickly find the accurate position with the help of the alignment rod, eliminating the deviation caused by manual visual judgment and manual adjustment. At the same time, it is easy to operate and improves the stacking efficiency.

[0006] Optionally, the workbench is provided with a locking groove that fits against the outer side of the silicon steel sheet, and the placement plate and strip are both provided on the bottom surface of the locking groove.

[0007] By adopting the above technical solution, the locking groove plays a limiting role on the outer edge of the silicon steel sheet. After the outer edge of the silicon steel sheet is embedded in the locking groove, its radial position is strictly limited, preventing the lateral displacement of the silicon steel sheet caused by external force or unstable placement during the initial stacking process. This further improves the positional accuracy of the silicon steel sheet and helps to improve the overall edge neatness of the stacking.

[0008] Optionally, a driving component is provided on the bottom surface of the workbench, and the output end of the driving component passes through the workbench and is fixedly connected to the placement plate.

[0009] By adopting the above technical solution, after the laminations are stacked, the cylinder drives the placement plate to move upward, lifting the stacked iron core as a whole. This eliminates the need for operators to bend over to pick up and place the cores, reducing the difficulty of operation. At the same time, it reduces the risk of misalignment of the stacked cores due to difficulty in handling them during the picking process, improving the convenience and safety of operation.

[0010] Optionally, the placement plate is provided with several easy-to-access openings.

[0011] By adopting the above technical solution, after the placement plate is pushed out by the cylinder, the operator can easily grasp the silicon steel sheet through the easy-access opening slot, and conveniently and quickly remove the stacked iron core from the central column. This reduces the impact and displacement of the silicon steel sheet during the picking and placing process, improves the operating efficiency, and also reduces the stacking error caused by improper picking and placing.

[0012] Optionally, some of the strips are arranged symmetrically around the central column.

[0013] By adopting the above technical solution, the symmetrically distributed strips enable the alignment rods to form a uniform positioning force around the silicon steel sheets, ensuring the balance of forces on the silicon steel sheets in all directions. During the lamination process, this reduces the possibility of the silicon steel sheets tilting or shifting due to excessive force on one side, thus ensuring the overall verticality of the iron core laminations.

[0014] Optionally, an elastic element is provided at one end of the strip located inside the groove, and the other end of the elastic element is fixedly connected to the alignment rod.

[0015] By adopting the above technical solution, the elastic force of the elastic element enables the alignment rod to adapt to the position of the silicon steel sheet groove and fit tightly against the inner walls on both sides of the groove. When there are slight differences in the size of the silicon steel sheets, the expansion and contraction of the elastic element can compensate for this difference, ensuring that the alignment rod always maintains a good fit with the silicon steel sheet groove, enhancing the adaptability of the device to different silicon steel sheets, and also ensuring the stability of the positioning.

[0016] Optionally, the alignment rod is cylindrical.

[0017] By adopting the above technical solution, the cylindrical alignment rod makes line contact with the silicon steel sheet groove, which reduces the friction between the two compared to other shapes. During the process of inserting or adjusting the silicon steel sheet, it reduces the wear on the surface of the silicon steel sheet caused by excessive friction, and also allows the silicon steel sheet to cooperate more smoothly with the alignment rod, reducing the operating resistance.

[0018] Optionally, the central column includes a threaded rod disposed on the placement plate and a sleeve threadedly connected to the threaded rod.

[0019] By adopting the above technical solution and replacing the sleeves of different sizes, the device can be adapted to silicon steel sheets with different inner diameters, which enhances the versatility and flexibility of the device and improves the utilization rate of the equipment.

[0020] In summary, this application includes at least one of the following beneficial technical effects of a high-precision iron core lamination device: 1. By aligning the alignment rod with the groove of the silicon steel sheet, the manual alignment method is replaced. The silicon steel sheet is aligned as a whole by sliding the alignment rod and engaging the groove of the silicon steel sheet. Each silicon steel sheet can quickly find the accurate position with the help of the alignment rod, eliminating the deviation caused by manual visual judgment and manual adjustment. At the same time, it is easy to operate and improves the stacking efficiency. 2. Once the stacking is complete, the cylinder drives the placement plate to move upward, lifting the stacked iron core as a whole. This eliminates the need for operators to bend over to pick up and place the cores, reducing operational difficulty. Simultaneously, it reduces misalignment of the stacked cores caused by difficulty in handling them during the picking process, improving operational convenience and safety. 3. The elastic force of the elastic element allows the alignment rod to adapt to the position of the silicon steel sheet groove and fit tightly against the inner walls on both sides of the groove. When there are slight differences in the size of the silicon steel sheets, the expansion and contraction of the elastic element can compensate for this difference, ensuring that the alignment rod always maintains a good fit with the silicon steel sheet groove. This enhances the adaptability of the device to different silicon steel sheets and also ensures the stability of the positioning. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-precision iron core lamination device; Figure 2 This is a cross-sectional schematic diagram used to illustrate the central column structure in the embodiment.

[0022] In the diagram, 1 is the workbench; 11 is the locking groove; 2 is the placement plate; 21 is the easy-access opening groove; 3 is the silicon steel sheet; 4 is the center column; 41 is the threaded rod; 42 is the sleeve column; 5 is the strip plate; 51 is the slide groove; 52 is the alignment rod; 6 is the driving component; and 7 is the elastic component. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 Appendix 2 provides a further detailed description of this application.

[0024] A high-precision iron core lamination device, referring to Figure 1 , Figure 2 The system includes a workbench 1, which is a horizontally arranged rectangular plate structure. A placement plate 2 is provided on the top surface of the workbench 1. The placement plate 2 is a circular steel plate. A central column 4 for mounting silicon steel sheets 3 is provided at the center of the placement plate 2. The central column 4 includes a threaded rod 41 vertically welded to the center of the upper surface of the placement plate 2 and a sleeve column 42 threadedly connected to the threaded rod 41. The sleeve column 42 is a cylindrical metal part with internal threads.

[0025] Reference Figure 1 , Figure 2 The workbench 1 is uniformly welded with several strips 5 around the central column 4. In this embodiment, four strips are preferred. The strips 5 are symmetrically arranged with the central column 4 as the center. The strips 5 are long strip-shaped metal plates, and the extension line of the length of the strips 5 passes through the center of the central column 4. Reference Figure 1 , Figure 2 The strip 5 has a groove 51 along its length. The groove 51 is a long strip-shaped groove. An alignment rod 52 is slidably disposed in the groove 51. The alignment rod 52 can slide along the length of the groove 51. The alignment rod 52 is cylindrical and made of metal. An elastic element 7 is welded to one end of the strip 5 inside the groove 51. The elastic element 7 is a spring. The other end of the elastic element 7 is welded and fixed to the end of the alignment rod 52 near the central column 4, so that an elastic force can be applied to the alignment rod 52 toward the central column 4.

[0026] Reference Figure 1 , Figure 2 Alignment rod 52 is set in the vertical direction, and its height is slightly higher than the maximum height of the silicon steel sheet 3 after stacking. Alignment rod 52 is located in the groove of silicon steel sheet 3 and can fit against the inner walls on both sides of the groove. The groove of silicon steel sheet 3 is a rotor groove or a stator groove.

[0027] Reference Figure 1 , Figure 2The top edge of the workbench 1 is integrally formed with a locking groove 11 that fits against the outer side of the silicon steel sheet 3. The locking groove 11 is an annular groove set around the top edge of the workbench 1. The diameter of the locking groove 11 is adapted to the diameter of the silicon steel sheet 3. The strip 5 is horizontally welded to the bottom surface of the locking groove 11. The placement plate 2 fits against the bottom surface of the locking groove 11. Specifically, the bottom surface of the workbench 1 is fixedly installed with a driving component 6 by bolts. The driving component 6 is a cylinder. The output end of the driving component 6 passes through the workbench 1 and is welded and fixedly connected to the center of the bottom surface of the placement plate 2. It can drive the placement plate 2 to move in the up and down direction. The placement plate 2 is provided with several easy-to-access opening slots 21 along its radial direction. In this embodiment, four slots are preferred, which makes it convenient for the operator to take out the silicon steel sheet 3 after the placement plate 2 is pushed out. The implementation principle of this application embodiment is as follows: In actual use, in the initial state, the drive component 6 retracts, and the placement plate 2 is flush with the bottom surface of the locking groove 11. The operator places the silicon steel sheet 3 onto the central column 4 and the column 42, with the outer side of the silicon steel sheet 3 embedded in the locking groove 11. After stacking, the alignment rod 52, under the action of the elastic component 7, aligns the grooves of the silicon steel sheet 3, ensuring that the errors during individual placement are all aligned. After stacking, the drive component 6 drives the placement plate 2 to move upward, and the operator removes the silicon steel sheet 3 through the easy-access opening slot 21. Then, the cylinder retracts and resets, completing one round of operation. During this process, the locking groove 11 and the alignment rod 52 work together to improve the stacking accuracy.

[0028] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision core lamination device comprising a worktable (1), characterized in that: The workbench (1) is provided with a placement plate (2), and the placement plate (2) is provided with a central column (4) for the silicon steel sheet (3) to be fitted. The workbench (1) is provided with several strips (5) around the circumference of the central column (4). The extension line of the strips (5) in the length direction passes through the center of the central column (4). The strips (5) are provided with a sliding groove (51) along their length direction. An alignment rod (52) is slidably arranged in the sliding groove (51). The alignment rod (52) is arranged in the up and down direction. The alignment rod (52) is located in the groove of the silicon steel sheet (3) and can fit against the inner walls of both sides of the groove.

2. A high-precision core lamination device according to claim 1, characterized in that: The workbench (1) is provided with a locking groove (11) that fits against the outer side of the silicon steel sheet (3), and the placement plate (2) and the strip plate (5) are both located on the bottom surface of the locking groove (11).

3. The high-precision core lamination device of claim 1, wherein: The bottom surface of the workbench (1) is provided with a driving component (6), and the output end of the driving component (6) passes through the workbench (1) and is fixedly connected to the placement plate (2).

4. A high-precision core lamination device according to claim 3, characterized in that: The placement plate (2) is provided with several easy-access opening slots (21).

5. The high-precision core lamination device of claim 1, wherein: Several of the aforementioned strips (5) are arranged symmetrically around the central column (4).

6. A high-precision core lamination device according to claim 5, characterized in that: The strip (5) is provided with an elastic element (7) at one end inside the groove (51), and the other end of the elastic element (7) is fixedly connected to the alignment rod (52).

7. A high-precision core lamination device according to claim 6, characterized in that: The alignment rod (52) is cylindrical.

8. The high-precision core lamination device of claim 1, wherein: The central column (4) includes a threaded rod (41) disposed on the placement plate (2) and a sleeve (42) threadedly connected to the threaded rod (41).

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