Multi-iron-core shaping tool suitable for runway-shaped amorphous iron core

Abstract

The utility model relates to a multi-iron-core setting tool suitable for runway-shaped amorphous iron cores, which comprises a clamping plate, a rectangular setting plate, a semicircular setting plate and a fastening screw, the rectangular setting plate is rectangular and is used for limiting / setting the inner side surfaces of two straight arms in the amorphous iron core, the length of the rectangular setting plate is equal to that of the straight arms of the amorphous iron core, and the semicircular setting plate is used for limiting the inner side surfaces of the two straight arms of the amorphous iron core. The width is equal to the diameter of the inner ring of the amorphous iron core; the clamping plates are in a long strip shape and used for clamping and extruding the amorphous iron core from the outer sides of the two straight arms of the amorphous iron core, and the limiting / shaping effect on the outer side faces of the two straight arms in the amorphous iron core is achieved. The fastening screw is used for tying the two clamping plates; and the main body part of the semicircular shaping plate is semicircular and is used for limiting / shaping the inner ring of the semicircular ring part in the amorphous iron core. The device is low in manufacturing cost, convenient to use and beneficial to improving the production efficiency of the amorphous iron core.

Description

Technical Field

[0001] The utility model relates to a multi-core shaping tooling adapted to a runway-shaped amorphous iron core. Background Art

[0002] A common manufacturing process for a runway-shaped (or runway-shaped, or race-track-shaped) amorphous iron core is to first wind a circular iron core, and then use a shaping tooling (or shaping tooling) to shape the iron core into a runway shape. After that, the iron core is sent to subsequent processes such as vacuum annealing for further treatment while being maintained in the shaped state by the shaping tooling.

[0003] The existing shaping tooling for runway-shaped amorphous iron cores is a single-core shaping tooling, and its shaping (or sizing) structure is a runway-shaped groove. For example, Chinese patent document CN220895335U discloses a race-track-shaped amorphous iron core shaper, a tray, a tray bracket, and an annealing tooling. The shaper has an annular groove structure for loading the race-track-shaped amorphous iron core to meet the requirements of shaping and placing the race-track-shaped amorphous iron core during the annealing process, and to ensure or improve the annealing effect. This kind of shaping tooling can play a good shaping role and facilitate subsequent related operations. However, the processing of the shaping tooling itself is difficult, the cycle is long, the cost is high, and the operation process of placing the circular iron core into the runway-shaped groove is also relatively complex, and it can only be used for shaping one iron core. Therefore, it not only increases the production cost of the iron core, but also restricts the improvement of production efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to reduce the manufacturing cost of the shaping tooling for runway-shaped amorphous iron cores, facilitate the use of the shaping tooling, and improve the production efficiency of amorphous iron cores.

[0005] The technical solution of the utility model is: a multi-core shaping tooling adapted to a runway-shaped amorphous iron core, including:

[0006] A rectangular shaping plate, which is rectangular, and the number is one or more. The specific number can be set according to the number of amorphous iron cores to be shaped. It is used to be arranged in the holes (windows) of the corresponding amorphous iron cores to form a limiting / sizing effect on the inner sides of the two straight arms of the amorphous iron core. Its length is equal to the length of the straight arm of the amorphous iron core, and its width is equal to the inner diameter of the amorphous iron core (the inner diameter of the semi-circular ring part of the amorphous iron core, which is equal to the distance between the inner sides of the two straight arms, and can also be called the inner width of the amorphous iron core). When in use, the edges on its horizontal two sides are aligned with and adhered to the straight arms of the amorphous iron core. Thus, under the cooperative action of the clamping plates, the amorphous iron core is shaped / held in an oval shape;

[0007] The clamping plates are strip-shaped and there are two of them. They are used to clamp and squeeze the amorphous iron core from the outer sides (lateral outer sides) of the two straight arms of the amorphous iron core (acting directly on the two straight arms of the amorphous iron core), forming a limiting / shape-setting effect on the outer sides of the two straight arms of the amorphous iron core. During use, the clamping plates are attached to the outer sides of the corresponding straight arms of the amorphous iron core (usually there can be multiple), maintaining the squeezing or limiting effect on the outer sides of the straight arms of the amorphous iron core, and cooperating with the rectangular shape-setting plate located in the hole of the amorphous iron core to achieve the shaping / shape retention of the elliptical amorphous iron core;

[0008] The fastening (or called tying) screws (or bolts) are used to tie the two clamping plates together so that the two clamping plates maintain the due relative distance.

[0009] Preferably, 90° flanges (flange plates, perpendicular to the main body part) are provided on the two lateral sides of the rectangular shape-setting plate, thus forming a trough-shaped structure. Such a rectangular shape-setting plate with flanges can be formed by pressing a steel plate.

[0010] Preferably, a number of through holes are distributed on the rectangular shape-setting plate. Such a rectangular shape-setting plate with a number of through holes can be prepared by using a perforated plate with through holes all over, or the required through holes can be machined on the rectangular shape-setting plate.

[0011] Preferably, 90° flanges are provided on the lateral inner sides (the side of the amorphous iron core) of the clamping plates, thus forming L-shaped plates (similar to the structure of angle steel, which can be called L-shaped clamping plates). Such clamping plates with flanges can be formed by pressing a steel plate, or such clamping plates can be directly cut from an appropriate specification of angle steel.

[0012] Preferably, a number of through holes are distributed on the clamping plates. Such clamping plates with a number of through holes can be prepared by using a perforated plate with through holes all over, or the required through holes can be machined on the clamping plates.

[0013] Usually, the fastening screws can be double-headed bolts, and nuts are screwed (threaded) at both ends. The clamping plates are provided with lateral through holes (corresponding to the lateral direction of the amorphous iron core / rectangular shape-setting plate) for passing through the fastening screws, and the nuts are located outside the lateral through holes of the clamping plates for passing through the fastening screws, forming a limit on the clamping plates in the corresponding direction, and can also push the clamping plates inward, thereby squeezing the iron core to deform. Appropriately, a single-headed bolt or any other suitable fastening screw / threaded fastener can also be used.

[0014] Furthermore, according to actual needs, a semi-circular shape-setting plate can be included or not included.

[0015] Preferably, the main body part of the semi-circular shaping plate is semi-circular, and the diameter of the semi-circle (i.e., the length of the straight side of the semi-circle) is equal to the width of the rectangular shaping plate, which is equal to the inner diameter of the amorphous iron core (the inner diameter of the semi-circular ring part in the amorphous iron core, equal to the width of the inner circle of the amorphous iron core), and is used to be arranged in the hole (window) of the amorphous iron core and integrated with the rectangular shaping plate in the hole to form a limiting / fixing effect on the inner circle of the semi-circular ring part in the amorphous iron core. During use, two are arranged in the hole of each amorphous iron core, respectively located on the longitudinal two sides of the rectangular shaping plate in the hole, integrated with the rectangular shaping plate, and the semi-circular edge (the edge of the semi-circle) thereof fits with the inner side surface of the semi-circular ring part on the corresponding side of the amorphous iron core.

[0016] Preferably, a connecting part is provided on the straight side of the semi-circular shaping plate (the side corresponding to the straight side of the semi-circle). During use, the connecting part is superposed (lapped) with the edge part on the corresponding side of the rectangular shaping plate and fixed together with each other (for example, fixed as a whole by fixing screws passing through the superposed part of the two).

[0017] For example, when the rectangular shaping plate is a perforated plate, the connecting part of the semi-circular shaping plate is also a perforated plate, and the through holes on the superposed part of the two are aligned with each other. A plurality of single-head bolts (or other suitable forms of fixing screws) are used to pass through the aligned through holes on the superposed part, and the nuts on the single-head bolts are tightened to fasten the two together.

[0018] Furthermore, the semi-circular shaping plate may or may not be provided.

[0019] Preferably, the connecting part of the semi-circular shaping plate is rectangular, and the width (the transverse dimension, that is, the dimension corresponding to the transverse / width direction of the amorphous iron core / rectangular shaping plate) is the same as the width of the inner circle of the amorphous iron core, and 90° flanges may or may not be provided at the two transverse ends. When 90° flanges are provided, during use, the 90° flanges on the shaping plate and the 90° flanges on the connecting part of the semi-circular shaping plate preferably face in opposite directions (the orientation can be selected during assembly) to avoid mutual interference and be beneficial to the stable support in the inner circle of the amorphous iron core.

[0020] Preferably, this multi-core shaping tooling is entirely made of SUS304 stainless steel or its main part is made of SUS304 stainless steel.

[0021] For example, the rectangular shaping plate and the clamping plate are both preferably made of SUS304 stainless steel material.

[0022] When the semi-circular shaping plate is provided, the semi-circular shaping plate is also preferably made of SUS304 stainless steel.

[0023] The beneficial effects of the present utility model are as follows: Since all components in this shaping tooling can be formed by plate pressing or use standard parts, compared with the runway-shaped grooves in the existing shaping tooling, the processing technology is greatly simplified, the processing cost is greatly reduced, and the processing cycle is greatly shortened; Since there is no need to embed the amorphous iron core into the runway-shaped groove, the shaping of the elliptical amorphous iron core is significantly simplified, which helps to reduce the workload and working time of related processes. At the same time, it can also avoid the damage caused to the amorphous iron core by embedding it in the runway-shaped groove, which is beneficial to ensuring the product quality of the amorphous iron core; Since a set of tooling can simultaneously shape and clamp multiple amorphous iron cores, it helps to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic top view of the positioning tooling related to the present utility model in the use state (loaded with a runway-shaped amorphous iron core);

[0025] Figure 2 is a schematic top view of the rectangular shaping plate related to the present utility model;

[0026] Figure 3 is a schematic side view of the rectangular shaping plate related to the present utility model;

[0027] Figure 4 is a schematic top view of the clamping plate related to the present utility model;

[0028] Figure 5 is a schematic side view of the clamping plate related to the present utility model;

[0029] Figure 6 is a schematic top view of the semi-circular shaping plate related to the present utility model;

[0030] Figure 7 is a schematic top view of the shape and size of the runway-shaped amorphous iron core related to the present utility model;

[0031] Figure 8 is a schematic side view of the shape and size of the runway-shaped amorphous iron core related to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] See Figure 7 and Figure 8, the racetrack-shaped (or oval-shaped) amorphous iron core 10 is in the shape of a racetrack (the top view is similar to a racetrack), with each end being a semi-circular ring (half of a circular ring), and the middle part being two straight arms that respectively connect the corresponding ends of the two semi-circular rings. The thickness and height of each part can be considered the same. The length of the straight arm can be represented by the symbol C, the width by the symbol D, and the height by the symbol H; the outer diameter (outer peripheral diameter) of the semi-circular ring is equal to the distance between the outer edges (outer sides) of the two straight arms, which can be considered the width of the racetrack-shaped amorphous iron core and can be represented by the symbol B; the distance between the (longitudinally) endpoints of the two semi-circular rings can be considered the length of the racetrack-shaped amorphous iron core, which is equal to the outer diameter of the semi-circular ring plus the length of the straight arm and can be represented by the symbol A; the outer (outer edge / outer side) perimeter (total length) of the racetrack-shaped iron core is πB + 2C, and the inner (inner edge / inner side) perimeter is π(B - 2D) + 2C.

[0033] The relevant dimensions of the rectangular shaping plate (referred to as the shaping plate for short) 30 and the semi-circular shaping plate 50 (if any) can be determined based on the length C of the two straight arms of the racetrack-shaped iron core and the inner ring width (inner ring diameter) B - 2D of the iron core. The length of the two clamping plates 20 can be determined based on the length A of the amorphous iron core and the number of amorphous iron cores considering the necessary gaps. The rectangular shaping plate and the semi-circular shaping plate (if any) are processed from appropriate plates, and the wound circular iron core is formed into a racetrack shape. The rectangular shaping plate is placed inside the hole 11 of the corresponding amorphous iron core (centered longitudinally) and supported on the inner sides of the two straight arms. The lateral outer sides of the amorphous iron cores are clamped by the two clamping plates, so that the inner sides of the two clamping plates are in contact with the outer sides of the corresponding straight arms of each amorphous iron core, and the lateral two edges of each shaping plate are in contact with the outer sides of the corresponding straight arms of the amorphous iron core where they are located. Longitudinally, the fastening bolts 40 are arranged in the gap areas between each amorphous iron core and at both ends (the longitudinal outer sides of the outermost amorphous iron cores). By tightening the nuts on each screw, the two clamping plates are pulled inward, and through the cooperation of the two side clamping plates and each shaping plate, each amorphous iron core is clamped to maintain the elliptical shape. If necessary, the iron core is extruded and deformed to form the required elliptical shape.

[0034] Example: According to the drawing of the racetrack-shaped iron core, a rectangular shaping plate is designed. The lateral two edges of the rectangular shaping plate are respectively bent 90° to form folded edges 21 with a height of 20 mm. Heat dissipation holes (through holes) 60 with a diameter of 10 mm and a spacing of 10 mm are uniformly arranged on the rectangular shaping plate. The setting of the heat dissipation holes helps to ensure uniform heating and heat dissipation temperatures during the vacuum annealing process, thereby ensuring stable performance of the iron core. The width of the rectangular shaping plate (the dimension corresponding to the width direction of the amorphous iron core) is the inner ring diameter of the racetrack-shaped amorphous iron core (the distance between the inner sides of the two straight arms).

[0035] Set the length of the clamping plate according to actual needs, so that the clamping plate can clamp all amorphous iron cores between the two clamping plates, and leave space for setting fastening screws to avoid interference between the fastening screws and the iron core. When necessary, the clamping plate can be set in multiple sections, and the multiple sections of the clamping plate may be fixedly connected by fixing screws. For example, when through holes (heat dissipation holes) 60 are provided on the clamping plate, adjacent two sections of the clamping plate can be overlapped (the ends are overlapped with each other), the through holes at the overlapping part are aligned, and multiple fixing screws are respectively passed through multiple groups of aligned through holes, and the overlapping part is fixed together with nuts. Thus, the clamping plate can be connected into the required length according to actual needs. The overlapping part at the same end of each section of the clamping plate can be set into a concave structure. When overlapping, the concave end of one clamping plate overlaps with the normal end of another clamping plate, and the surface (exposed surface) after overlapping is a flat surface (the degree of concavity is set according to this requirement).

[0036] For example, for every 4 (or other quantity, such as Figure 1 the 3 shown) amorphous iron cores, two L-shaped clamping plates (clamping plates) with a thickness of 2 mm are provided. Heat dissipation holes with a diameter of 10 mm and a spacing of 10 mm are provided on the folded edges 31 of the L-shaped clamping plates. Place the rectangular shaping plate at the middle position of the iron core at an appropriate time before the iron core is shaped. In practice, the position of the rectangular shaping plate can be set with reference to the heat dissipation holes of the clamping plate and the rectangular shaping plate, so that the rectangular shaping plate is centered horizontally. The two clamping plates are respectively arranged on the lateral outer sides of the amorphous iron core. Tighten the nuts on each screw to make the two clamping plates move towards each other. Under the clamping action of the two side clamping plates, the iron core is gradually deformed into a racetrack shape, and the folded edges on the lateral two sides of the rectangular shaping plate are closely attached to the inner side surfaces of the straight arms of the amorphous iron core, so as to achieve the shaping effect that the iron core gradually changes from a circle to an ellipse. Place each shaped iron core under the clamping of the shaping tooling on the annealing rack to perform annealing operations, and keep the shape of the iron core unchanged through the shaping tooling. Before entering the annealing equipment, a semi-circular shaping plate 50 can be further used to improve the shaping and shape retention ability of the ellipse. A row of through holes (which can be called positioning holes or also heat dissipation holes) along the width direction is provided on the rectangular connecting part 52 of the semi-circular shaping plate. The size and arrangement of the through holes are the same as those of the through holes on the corresponding edge part of the shaping plate (for example, the aforementioned diameter of 10 mm and a spacing of 10 mm). Align the positioning holes on the connecting part of the semi-circular shaping plate with the heat dissipation holes on the corresponding side edge part of the shaping plate, and fix the semi-circular shaping plate and the shaping plate together with fixing screws through these aligned through holes. The number of fixing screws can be set according to actual needs. For example, one fixing screw is provided on each group (every two) of aligned through holes. After fixing, the outer edge (arc-shaped edge) of the semi-circular part 53 of the semi-circular shaping plate just abuts against the inner circle (inner side surface) of the semi-circular ring part of the amorphous iron core, which is conducive to achieving a more accurate elliptical shaping and better maintaining the shape unchanged in subsequent processes. According to actual needs, 90° folded edges can also be provided at the lateral two ends 51 of the connecting part of the semi-circular shaping plate.

[0037] After the vacuum annealing process, the amorphous iron core with the shaping tooling is placed on the curing workbench. A special curing glue is evenly applied to the iron core. After complete curing, the fastening screws are loosened, the L-shaped clamping plate and the shaping plate are removed, and the curing glue is evenly applied to the other side. After the curing glue is completely cured, the excess glue leaking on the surface is processed. After winding the insulating paper, the production of the iron core is completed.

[0038] A rectangular shaping plate and a semi-circular shaping plate can be prepared from SUS304 stainless steel plates with a thickness of 1.5 mm; a clamping plate (L-shaped clamping plate) can be prepared from SUS304 stainless steel plates with a thickness of 2 mm. The fastening screws (matching nuts) and the fixing screws can also be made of SUS304 stainless steel.

[0039] The reason for choosing SUS304 stainless steel is that there is no carburization phenomenon during high-temperature vacuum annealing, which has no effect on the performance of the amorphous iron core.

[0040] This shaping tooling is simple, practical, and has a small investment. Its production investment can be reduced by more than 60% compared with the existing shaping tooling based on elliptical grooves.

[0041] Through experiments, using the above-mentioned steel plates (SUS304 stainless steel plates) of corresponding specifications to prepare the shaping plate and the clamping plate is suitable for the preparation of racetrack-shaped amorphous iron cores under various common specifications / uses in power / transmission and distribution equipment. In practice, the appropriate thickness of the plate can be selected according to actual needs.

[0042] Since there is no carburization phenomenon during high-temperature vacuum annealing of SUS304 stainless steel material, using SUS304 stainless steel or other materials with similar characteristics will not have an adverse effect on the performance of the amorphous iron core.

[0043] According to actual needs, through holes can be set at any suitable part of the positioning tooling to facilitate heat conduction and temperature balance in the subsequent annealing process.

[0044] Experiments have proved that based on the characteristics of the amorphous iron core, using this shaping tooling can squeeze and deform the circular iron core from both ends of any diameter into the set racetrack shape. If necessary, a press can be used in combination.

[0045] For each of the preferred and optional technical means disclosed in the present invention, unless otherwise specified and when one preferred or optional technical means is a further limitation of another technical means, they can be arbitrarily combined to form several different specific implementation manners.

Claims

1. A multi-core shaping tooling adapted to a racetrack-shaped amorphous iron core, characterized in that Comprising: A rectangular shaping plate, which is rectangular in shape and has one or more in number. It is used to be arranged in the holes of the amorphous iron core to form a limiting / shaping effect on the inner sides of the two straight arms in the amorphous iron core. Its length is equal to the length of the straight arm of the amorphous iron core, and its width is equal to the inner diameter of the amorphous iron core. Clamping plates, which are strip-shaped and have two in number. They are used to clamp and squeeze the amorphous iron core from the outer sides of the two straight arms of the amorphous iron core to form a limiting / shaping effect on the outer sides of the two straight arms in the amorphous iron core. Tightening screws, which are used to tie the two clamping plates together so that the two clamping plates maintain the proper relative distance.

2. The multi-core shaping tooling according to claim 1, characterized in that 90° flanges are provided on the lateral two sides of the rectangular shaping plate.

3. The multi-core shaping tooling according to claim 1, characterized in that A number of through holes are distributed on the rectangular shaping plate.

4. The multi-core shaping tooling according to claim 1, wherein 90° flanges are provided on the lateral inner sides of the clamping plates.

5. The multi-core shaping tooling according to claim 1, wherein A number of through holes are distributed on the clamping plates.

6. The multi-core shaping tooling according to claim 1, characterized in that The tightening screws adopt double-headed bolts, and nuts are screwed at both ends. Transverse through holes for passing the tightening screws are provided on the clamping plates.

7. The multi-core shaping tooling according to any one of claims 1-6, characterized in that A semi-circular shaping plate is provided or not. The main part of the semi-circular shaping plate is semi-circular, and the diameter of the semi-circle is equal to the width of the rectangular shaping plate. It is used to be arranged in the holes of the amorphous iron core and is integrated with the rectangular shaping plate in the hole to form a limiting / shaping effect on the inner circle of the semi-circular ring part in the amorphous iron core.

8. The multi-core shaping tooling according to claim 7, characterized in that A connecting part is provided on the straight-edge side of the semi-circular shaping plate. The connecting part of the semi-circular shaping plate is rectangular, and its width is the same as the width of the inner circle of the amorphous iron core.

9. The multi-core shaping tooling according to claim 8, wherein 90° flanges are provided or not at the transverse two ends of the connecting part of the semi-circular shaping plate.

10. The multi-core shaping tooling according to claim 9, characterized in that The rectangular shaping plate, the semi-circular shaping plate and the clamping plates are all made of SUS304 stainless steel material.

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