Laminated iron core positioning tool

Abstract

The utility model relates to a laminated iron core positioning tool which comprises a working table, hydraulic cylinders are arranged on the upper end face of the working table, the two hydraulic cylinders are installed at the corners of the working table and placed diagonally, telescopic rods of the two hydraulic cylinders are perpendicular to each other, and the front ends of the telescopic rods of the hydraulic cylinders are fixedly connected with an L-shaped support. The two L-shaped supports are staggered up and down, four side arms form a rectangular frame with an adjustable size, and iron core laminations needing to be stacked are placed in the rectangular frame; the two side arms of the L-shaped support are respectively provided with two sets of positioning clamping pieces, and the positioning clamping pieces are positioned on the outer sides of the four edges of the iron core lamination. By using the tool provided by the utility model, the laminated iron core is simple and reliable, the position is convenient to adjust, the precision of the laminated iron core is improved, and the service life of the transformer is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer core production, in particular to a positioning tooling for laminated cores. Background Art

[0002] With the rapid development of social economy, as an important key basic equipment widely used in the power system, the requirements for the performance of transformers such as energy conservation and environmental protection are getting higher and higher. Compared with conventional planar laminated core transformers, planar wound core transformers, and three-dimensional wound core transformers, the new three-dimensional laminated core transformer has obvious advantages in terms of core manufacturing quality, reducing material consumption, reducing losses, improving performance and efficiency, energy conservation and environmental protection, operation and maintenance, and safety and reliability. In the production of the new three-dimensional laminated core, the manual lamination speed is slow and the cores are not neatly arranged. To ensure the performance and production progress of the three-dimensional laminated core, stacking tooling is added, but there are some problems with the existing tooling. For example, the utility model patent with the publication number CN205959763U discloses a horizontal and vertical positioning stacking tooling for cores, which includes a tooling base, a number of load-bearing and auxiliary positioning channel steels installed on the upper part of the tooling base, an auxiliary clamping member installed on the upper part of the channel steel, and a right-angled triangular magnet for intermediate positioning of the core; there are 8 sets of the auxiliary clamping members, which are respectively arranged at positions close to the four corners of the horizontal and vertical positioning stacking tooling for cores. The auxiliary clamping member includes an adjustable magnet positioning bolt, a magnet, a square steel plate, and a fixing plate fixedly installed on the upper part of the channel steel; one end of the adjustable magnet positioning bolt is movably connected to the fixing plate through a thread, and the other end abuts against the magnet. The rotation of the adjustable magnet positioning bolt drives the movement of the magnet at one end thereof; there are 16 adjustable magnet positioning bolts in total, with 2 on each set of auxiliary clamping members. When adjusting the positioning bolts, the workload is large and the perpendicularity is not easy to ensure.

[0003] Therefore, it is necessary to develop a positioning tooling for laminated cores to address the above-mentioned defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a positioning tooling for laminated cores, which controls a hydraulic cylinder to adjust the position of the positioning clamping member, is convenient to operate, and moves simultaneously on each side to ensure that the positioning surfaces are consistent and improve the stacking accuracy.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model relates to a positioning tooling for laminated iron cores, which comprises a workbench. Two hydraulic cylinders are arranged on the upper end surface of the workbench. The two hydraulic cylinders are installed at the corner positions of the workbench and are placed diagonally. The telescopic rods of the two hydraulic cylinders are perpendicular to each other. The front end of the telescopic rod of the hydraulic cylinder is fixedly connected with an L-shaped bracket. After the two L-shaped brackets are installed, they are staggered up and down, and the four side arms form a rectangular frame with adjustable size. The iron core laminations to be stacked are placed in the rectangular frame. Two groups of positioning clamps are respectively arranged on the two side arms of the L-shaped bracket, and the positioning clamps are positioned on the outer sides of the four sides of the iron core laminations.

[0007] Preferably, one side arm of the L-shaped bracket is a square rod, and the other side arm is a waist-shaped hole rod. The distal ends of the two waist-shaped hole rods are stacked on a support block. The support block is provided with a threaded hole in the middle and a pressing plate is arranged directly above. The bottom surface of the pressing plate is in the shape of a square step with holes. The square step passes through the waist-shaped groove. The support block and the pressing plate are fixed together by screws.

[0008] Preferably, the positioning clamps are divided into two types. One type of positioning clamp includes a first movable block and a magnet. The magnet is fixed on the side wall of the first movable block facing the iron core laminations. The first movable block is provided with a square hole, so that the square rod passes through the square hole of the first movable block and the square rod can slide in the first movable block. The other type of positioning clamp includes a second movable block and a magnet. The magnet is fixed on the side wall of the second movable block facing the iron core laminations. The second movable block is provided with a T-shaped groove and is installed at one end of the waist-shaped hole rod, and the second movable block can slide on the waist-shaped hole rod.

[0009] Preferably, the hydraulic cylinder is fixed on the workbench through a support plate, and the support plate is L-shaped.

[0010] Preferably, a waist-shaped hole is arranged on the workbench corresponding to the lower end of the square rod. The long side of the waist-shaped hole is parallel to the square rod, and the first movable block is fixed on the workbench through the waist-shaped hole with screws.

[0011] Preferably, an insulating plate is arranged on the upper part of the workbench, and the iron core laminations are stacked on the upper part of the insulating plate to prevent the magnet on the upper end of the positioning clamp from magnetizing the workbench, making it difficult to remove the laminated iron core.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0013] The positioning tooling for laminated iron cores of the present utility model adjusts the hydraulic cylinder. The positioning clip installed on the side of the kidney-shaped hole rod moves forward along with the hydraulic cylinder, clamping the laminated iron cores. The positioning clips move simultaneously, and the front positioning surfaces remain consistent. It is convenient to adjust, has high synchronism, reduces the proficiency requirements for workers, improves production efficiency, and also ensures the stacking accuracy of the iron cores. Description of the Drawings

[0014] The present utility model will be further described below in conjunction with the description of the drawings.

[0015] Figure 1 It is the front view structural schematic diagram of the positioning tooling for laminated iron cores of the present utility model;

[0016] Figure 2 It is the top view structural schematic diagram of the positioning tooling for laminated iron cores of the present utility model;

[0017] Figure 3 It is the structural schematic diagram of the positioning tooling for laminated iron cores of the present utility model;

[0018] Figure 4 It is the front view sectional schematic diagram at I of the positioning tooling for laminated iron cores of the present utility model.

[0019] Description of the reference numerals: 1, workbench; 2, channel steel; 3, support feet; 4, hydraulic cylinder; 5, support plate; 6, L-shaped bracket; 601, square rod; 602, kidney-shaped hole rod; 7, positioning clip; 701, first movable block; 702, magnet; 703, second movable block; 8, pressing plate; 9, support block. Specific Embodiment

[0020] The core of the present utility model is to provide a positioning tooling for laminated iron cores. By controlling the hydraulic cylinder and adjusting the position of the positioning clip, the operation is convenient, and each side moves simultaneously to ensure that the positioning surfaces are consistent, improving the stacking accuracy.

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model.

[0023] Referring to the attached drawings, Figure 1 is a front view structural schematic diagram of the laminated core positioning tooling of the present utility model; Figure 2 is a top view structural schematic diagram of the laminated core positioning tooling of the present utility model; Figure 3 is a structural schematic diagram of the laminated core positioning tooling of the present utility model, Figure 4 is a front view sectional schematic diagram at I of the laminated core positioning tooling of the present utility model.

[0024] In a specific embodiment, as Figures 1 to 4 shown, a laminated core positioning tooling includes a workbench 1. At the lower end of the workbench 1, there are support feet 3 and channel steels 2. The support feet 3 are installed at the four corners of the workbench. At the lower ends of the two support feet, there are support ribs to make the support feet stable and reliable. At the upper ends of the support feet, there are channel steels 2 for supporting the workbench 1. At the upper end of the workbench 1, there are two hydraulic cylinders 4. The hydraulic cylinders are installed at the corner positions of the workbench 1 and are placed diagonally. The telescopic rods of the two hydraulic cylinders 4 are perpendicular to each other. At the front end of the telescopic rod of the hydraulic cylinder 4, there is an L-shaped bracket 6 fixed by screws. The two L-shaped brackets 6 are installed with an offset up and down, and the four side arms form a rectangular frame with adjustable size. The core laminations to be stacked are placed inside the rectangular frame. The hydraulic cylinders 4 are installed diagonally. The hydraulic cylinders 4 are fixed by screws on the vertical side of the support plate 5. The support plate 5 is an L-shaped plate seat. The horizontal side of the support plate 5 is fixed by screws at the diagonal of the workbench 1.

[0025] Specifically, one side arm of the L-shaped bracket 6 is a square rod 601, and the other side arm is a waist-shaped hole rod 602. On both side arms of the L-shaped bracket 6, there are two groups of positioning clamps 7 respectively. The positioning clamps 7 are respectively arranged at positions close to the four sides where the laminated cores are stacked. The distal ends of the two waist-shaped hole rods 602 are placed on the support block 9. The two waist-shaped hole rods 602 are stacked together. At the upper end of the support block 9, there is a pressing plate 8. The pressing plate 8 is a stepped structure with holes on the bottom surface. The lower square step passes through the waist-shaped hole and is installed on the support block 9. The two waist-shaped hole rods 602 are fixed on the support block 9 by screws. By adjusting the tightness of the screws, it is convenient for the L-shaped bracket 6 to move.

[0026] In a specific embodiment, as Figures 1 to 4As shown in the figure, the positioning clip 7 is divided into two types. One type of positioning clip 7 includes a first movable block 701 and a magnet 702. The magnet 702 is fixed on the side wall of the first movable block 701 facing the core laminations. When stacking the core laminations, the magnet 702 can adsorb the side surface of the core laminations, making the side surface of the core laminations closely fit on the magnet 702. And to ensure the stacking accuracy, two positioning clips 7 are installed on each side, and every two positioning clips 7 are evenly distributed on both sides of one side of the laminated core. The first movable block 701 has a square hole and is installed on the square rod 601. According to the length of the laminated core, the distance between the two first movable blocks 701 is adjusted so that the first movable blocks 701 are arranged at both ends of the core laminations, and then the first movable blocks 701 are fixed to the workbench from the back through the kidney-shaped holes. The other type of positioning clip 7 includes a second movable block 703 and a magnet 702. The magnet 702 is fixed on the second movable block 703. The second movable block 703 has a T-shaped groove and is installed on the kidney-shaped hole rod 602. According to the distance between the first movable blocks 701, the distance between the second movable blocks 703 is adjusted, and it is fixed to the kidney-shaped hole rod 602 by screws to prevent the second movable block 703 from moving when adjusting the kidney-shaped hole rod 602.

[0027] In a specific embodiment, as Figures 1 to 4 shown, when stacking the laminated core, to ensure the accuracy and reduce the gap between the laminations, the hydraulic cylinder drives the L-shaped bracket 6 to move forward. The square rod 601 passes through the first movable block 701 and slides inside the first movable block 701. The second movable block 703 will move forward and adjust along with the movement of the L-shaped bracket 6. The second movable blocks 703 move simultaneously to ensure their synchronism.

[0028] In a specific embodiment, as Figures 1 to 3 shown, an insulating board 10 is provided on the upper part of the workbench 1, and the core is installed on the upper part of the insulating board 10.

[0029] Working principle of the positioning tooling for the laminated iron core of the utility model: Adjust the tooling before stacking the laminated iron core to save time for subsequent stacking. According to the size of the laminated iron core, adjust the hydraulic cylinder 4. The front end of the telescopic rod of the hydraulic cylinder 4 is fixedly connected with an L-shaped bracket. Two L-shaped brackets 6 are staggered up and down, and the four side arms form a rectangular frame with adjustable size. Place the iron core laminations to be stacked inside the rectangular frame. Place two first movable blocks 701 evenly at both ends on one side of the laminated iron core. A magnet 702 is installed at the front end of the first movable block 701, and the magnet 702 will adsorb and fix the side of the laminated iron core. Fix the first movable block 701 on the workbench with screws through the kidney-shaped holes. According to the position of the first movable block 701, fix the second movable block 703 on the upper end surface of the kidney-shaped hole rod 602 with screws. After the first group of laminated iron cores are placed, adjust the hydraulic cylinder 4 to move forward. The square rod 601 on the L-shaped bracket 6 passes through the square hole in the first movable block 701 and moves forward. One end of the kidney-shaped hole rod 602 on the L-shaped bracket 6 drives the second movable block 703 to move forward. Reduce the gap at the four corners of the iron core. Use a spirit level to measure and position accurately, adjust the position, and lock the screws between the support block 9 and the pressing plate 8 on the workbench. Make the positioning tooling well-positioned and not shift. Then continue to stack the laminated iron cores until all the installations of the laminated iron cores are completed. Temporarily tie the stacked iron cores, loosen the screws between the support block 9 and the pressing plate 8, start the hydraulic cylinder 4 to move outwards, and loosen the iron core, so that the stacked iron core can be removed. The positioning clamps 7 move together on the same side, and the positioning surfaces are always consistent, with high synchronism, ensuring the stacking accuracy. The use of the positioning tooling reduces the proficiency requirements for workers to stack the iron cores, improves production efficiency, and thus reduces production costs.

[0030] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference can be made to the description of the method part for related parts.

[0031] The above-described embodiments are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A laminated core positioning tool, comprising a workbench (1), characterized in that: The upper end surface of the workbench (1) is provided with a hydraulic cylinder (4), two of the hydraulic cylinders (4) are installed at the corners of the workbench (1) and are placed diagonally, the telescopic rods of the two hydraulic cylinders (4) are perpendicular to each other, and the front ends of the telescopic rods of the hydraulic cylinders (4) are fixedly connected to an L-shaped bracket (6), the two L-shaped brackets (6) are staggered up and down, and the four side arms form a rectangular frame with adjustable size, and the iron core laminations to be stacked are placed in the rectangular frame; two groups of positioning clamps (7) are respectively provided on the two side arms of the L-shaped bracket (6), and the positioning clamps (7) are positioned on the outside of the four sides of the iron core laminations.

2. The laminated core positioning tool according to claim 1, characterized in that: One side arm of the L-shaped bracket (6) is a square rod (601), and the other side arm is a waist-shaped hole rod (602). The far ends of the two waist-shaped hole rods (602) are stacked on the support block (9). The support block (9) is centrally provided with a threaded hole and a pressure plate (8) is arranged directly above it. The bottom surface of the pressure plate (8) is provided with a square step with a hole. The square step passes through the waist-shaped groove. The support block (9) and the pressure plate (8) are fixed together by screws.

3. The laminated core positioning tool according to claim 2, characterized in that: The positioning clamp (7) is divided into two types. One type of the positioning clamp (7) includes a first movable block (701) and a magnet (702), wherein the magnet (702) is fixed on the side wall of the first movable block (701) facing the core stack, and the first movable block (701) contains a square hole, so that the square rod (601) slides through the square hole of the first movable block (701); the other type of the positioning clamp (7) includes a second movable block (703) and a magnet (702), wherein the magnet (702) is fixed on the side wall of the second movable block (703) facing the core stack, and the second movable block (703) contains a T-shaped slot and is installed on the waist-shaped hole rod (602), and the second movable block (703) can slide on the waist-shaped hole rod (602).

4. The laminated core positioning tool according to claim 1, characterized in that: The hydraulic cylinder (4) is fixed on the workbench (1) via a support plate (5), and the support plate (5) is an L-shaped plate seat.

5. The laminated core positioning tool according to claim 2, characterized in that: A waist-shaped hole is provided on the workbench (1) corresponding to the lower end of the square rod (601), the long side of the waist-shaped hole is parallel to the square rod (601), and the first movable block (701) is fixed to the workbench (1) by screws through the waist-shaped hole.

6. The laminated core positioning tool according to claim 1, characterized in that: An insulating plate (10) is provided on the upper part of the workbench (1), and iron core laminations are stacked on the upper part of the insulating plate (10).

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