An ellipse coil shaping tool

Abstract

The utility model relates to a kind of long circular coil straightening tool in coil straightening technical field, including bearing table, X-axis straightening assembly and Y-axis straightening assembly, the bearing table middle part is equipped with the X-axis let room slot that passes through up and down and the Y-axis let room slot that passes through up and down, the X-axis let room slot is equipped with two along Y-axis let room slot symmetry;The straightening assembly includes slide rail, the slide rail each section has a pair of synchronous and opposite moving direction shaping part, and a pair of shaping part is connected with movable pad by elastic member, to support the area of coil corresponding let room slot;The utility model is equipped with X-axis straightening assembly and Y-axis straightening assembly, and the shaping part of a pair of synchronous opposite moving direction driven by combination bidirectional screw rod, the inner ring and outer ring of coil can be synchronously pressed and straightened;Effectively solve the problem that coil inner ring cannot be shaped in prior art, avoid coil installation difficulty caused by inner ring warping, wrinkle or protrusion.

Description

Technical Field

[0001] This utility model relates to the field of coil straightening technology, and in particular to a long oval coil straightening fixture. Background Technology

[0002] Large transformer coils often have multiple layers. Copper wire is wound onto a mold, and after the coil is fully wound, insulating paper is laid on top. Leads are then soldered on, and another layer is wound. This process is repeated multiple times to complete the coil production, forming a ring-shaped transformer coil. After the coil is wound, in order to ensure that the coil can withstand the axial force during a short circuit and meet the axial dimension requirements, the coil must be compressed and shaped to facilitate the subsequent installation of the iron core.

[0003] A transformer coil shaping and clamping device, disclosed in patent CN115101330B, includes a fixed support plate with a central opening. The fixed support plate is connected to a movable base plate via a lifting mechanism. The movable base plate is used to hold the transformer coil, allowing it to rise and fall. Multiple clamping blocks are arranged on the upper surface of the fixed support plate in the circumferential direction of the transformer coil. These clamping blocks are used to shape and clamp the transformer coil. An air bladder is positioned between the transformer coil and the clamping blocks, and the air bladder is connected to an air injection valve and a pressure exhaust valve. The multiple clamping blocks allow for one-time shaping of the transformer coil. However, while this device can shape the outer coil of the transformer coil, it often cannot shape the inner coil of hollow coils. Furthermore, the presence of warping, wrinkles, or protrusions within the coil can prevent it from being properly fitted onto the pre-set support, resulting in poor coil shaping.

[0004] To address this, an existing patent publication number CN118136400B discloses a transformer coil shaping device, comprising a body, a support platform for carrying the coil, inner and outer coil shaping components, a radial shaping device, and a shaping controller. The radial shaping device includes a hydraulic punch and a shaping plate, with the shaping plate connected to the hydraulic punch and located above the inner and outer coil shaping components. The inner and outer coil shaping components are mounted on the support platform and include an X-axis shaping component and a Y-axis shaping component, as well as a mounting cavity for the movement of the X-axis and Y-axis shaping components. Four connecting rods drive four sets of inner and outer pressure plates to cooperate in synchronously shaping the inner and outer coils of the transformer coil, resulting in uniform force distribution on the inner and outer coils and effectively improving the shaping quality and efficiency of the transformer. However, during the radial shaping operation, due to the openness of the support platform's accommodating cavity, this area cannot support the coil (the coil is suspended in this area), causing this part of the coil to warp downwards.

[0005] To address this, we designed an elongated oval coil straightening fixture. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model discloses an oblong coil straightening fixture.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A long oval coil straightening fixture includes a support platform, an X-axis straightening component, and a Y-axis straightening component. The support platform has an X-axis clearance groove and a Y-axis clearance groove that extend vertically through the center. Two X-axis clearance grooves are symmetrically arranged along the Y-axis clearance groove.

[0009] The orthopedic assembly includes a slide rail, each segment of which has a pair of synchronously moving and oppositely moving shaping parts, and a movable pad is connected between the pair of shaping parts by an elastic element to support the area of ​​the coil corresponding to the clearance groove.

[0010] Furthermore, each segment of the slide rail is rotatably connected to a bidirectional lead screw, and the two lead screw parts of the bidirectional lead screw respectively cooperate with two shaping parts in a pair of shaping parts.

[0011] Furthermore, the inner ends of the two bidirectional lead screws on the slide rail are provided with spline grooves and are slidably connected by spline groove sleeves, wherein the spline groove sleeves are rotatably connected to the middle of the slide rail through bearing seats;

[0012] The spline sleeve is provided with locking screws at both ends to lock the bidirectional lead screw.

[0013] Furthermore, the elastic element includes an inner elastic pull rope and an outer elastic pull rope. The inner elastic pull rope is connected between the movable pad and the inner shaping part, and the outer elastic pull rope is connected between the movable pad and the outer shaping part.

[0014] Furthermore, the movable pad in the X-axis orthopedic assembly has an inner recess in the middle of its inner side that connects to the corresponding inner elastic pull rope.

[0015] Furthermore, the movable pad in the X-axis orthopedic assembly has an outer recess at both ends of its outer side that connects to the corresponding outer elastic pull rope.

[0016] Furthermore, the shaping part includes a slider, and an upwardly extending fixing bracket is installed on the top of the slider. The fixing bracket has an orthopedic plate on one side corresponding to the position of the coil.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting up X-axis and Y-axis straightening components, combined with a pair of synchronously moving shaping parts (inner shaping part and outer shaping part) driven by a bidirectional lead screw, the inner and outer coils of the coil can be synchronously pressed and straightened; effectively solving the problem that the inner coil of the coil cannot be shaped in the prior art, avoiding the difficulty of coil installation caused by warping, wrinkling or protrusion of the inner coil, and ensuring uniform force on the inner and outer coils, with higher overall dimensional accuracy of the coil, meeting the strict requirements of transformer coils for axial force and dimensions;

[0019] 2. Elastic elements (inner elastic rope and outer elastic rope) are set in the X-axis and Y-axis clearance groove areas to connect the movable pad and the shaping part. The movable pad dynamically supports the suspended area of ​​the coil through the elastic elements; to prevent the coil from warping downward or deforming locally in the clearance groove area due to suspension, and significantly improve the flatness and structural stability of the coil.

[0020] 3. The bidirectional lead screw is connected to the slide rail via a splined sleeve and its position is locked by a locking screw. The splined sleeve is rotatably connected via a bearing seat, which facilitates the adjustment of the lead screw position. It is compatible with the detachable installation of the fixed bracket and the orthotic plate. This allows for quick adjustment of the position and stroke of the orthotic components, adapting to different sizes of oval coils, reducing equipment replacement costs. At the same time, the sliding insertion design of the splined sleeve simplifies the positioning and fixing process of the bidirectional lead screw, improving the ease of operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a top view of the support platform in this utility model;

[0023] Figure 3 This is a top view of the present invention;

[0024] Figure 4 for Figure 3 AA sectional view.

[0025] In the diagram: 1. Support platform; 11. X-axis clearance groove; 12. Y-axis clearance groove; 2. X-axis straightening assembly; 21. X-axis slide rail; 22. Inner X-axis shaping part; 221. Inner slider; 222. Inner fixed bracket; 223. Inner straightening plate; 23. Outer X-axis shaping part; 231. Outer slider; 232. Outer fixed bracket; 233. Outer straightening plate; 24. First elastic element; 241. Inner elastic pull rope; 242. Outer elastic pull rope; 25. X-axis movable pad; 251. Inner recess; 252. Outer recess; 26. X-axis bidirectional lead screw; 27. Splined sleeve; 28. Bearing seat; 29. ​​Locking screw; 3. Y-axis straightening assembly. Detailed Implementation

[0026] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0027] Example 1, in conjunction with Appendix Figure 1-4 A long oval coil straightening fixture includes a support platform 1, an X-axis straightening component 2 and a Y-axis straightening component 3. The support platform 1 has an X-axis clearance groove 11 and a Y-axis clearance groove 12 that pass through the center. The X-axis clearance groove 11 is symmetrically arranged along the Y-axis clearance groove 12.

[0028] Preferably, to ensure that the Y-axis straightening component 3 has sufficient travel, the X-axis clearance groove 11 corresponds to the major axis direction of the elongated oval coil, and the Y-axis clearance groove 12 corresponds to the minor axis direction of the elongated oval coil.

[0029] The X-axis straightening component 2 includes an X-axis slide rail 21, each segment of which has a pair of synchronously moving X-axis shaping parts in opposite directions, i.e., combined with an attached... Figure 4 The X-axis slide rail 21 has a pair of synchronous and oppositely moving X-axis shaping parts on the left side of the Y-axis clearance groove 12, and the section on the right side of the Y-axis clearance groove 12 also has a pair of synchronous and oppositely moving X-axis shaping parts; the two X-axis shaping parts are the inner X-axis shaping part 22 and the outer X-axis shaping part 23, respectively.

[0030] An X-axis movable pad 25 is connected between the two X-axis shaping parts via a first elastic element 24 to support the coil, thereby preventing the area of ​​the coil corresponding to the X-axis clearance groove 11 from being suspended. Specifically, the first elastic element 24 includes an inner elastic pull rope 241 and an outer elastic pull rope 242. The inner elastic pull rope 241 connects the X-axis movable pad 25 to the inner X-axis shaping part 22, and the outer elastic pull rope 242 connects the X-axis movable pad 25 to the outer X-axis shaping part 23.

[0031] Specifically, both the inner elastic pull rope 241 and the outer elastic pull rope 242 are parallel to the X-axis slide rail 21.

[0032] Both sections of the X-axis slide rail 21 are rotatably connected to X-axis bidirectional lead screws 26. The two lead screws of the X-axis bidirectional lead screws 26 are respectively engaged with the inner X-axis shaping part 22 and the outer X-axis shaping part 23. That is, the rotation of the X-axis bidirectional lead screws 26 drives the inner X-axis shaping part 22 and the outer X-axis shaping part 23 to move synchronously and in opposite directions. Since the X-axis movable pad 25 is pulled by the inner X-axis shaping part 22 and the outer X-axis shaping part 23 on both sides respectively, its position will not change much.

[0033] It should be noted that the X-axis straightening assembly 2 also has a drive component (not shown in the figure) that drives the X-axis bidirectional lead screw 26 to rotate, such as a geared motor.

[0034] In one possible implementation, to reduce the number of driving components in the X-axis straightening assembly 2 and lower manufacturing costs, the inner ends of the two X-axis bidirectional lead screws 26 on the X-axis slide rail 21 are each provided with spline grooves and are slidably sleeved by spline groove sleeves 27. The spline groove sleeves 27 are rotatably connected to the middle of the X-axis slide rail 21 via bearing seats 28.

[0035] If necessary, when performing large-scale straightening of mobile coils, locking screws 29 can be provided at both ends of the spline sleeve 27. The locking screws 29 prevent the spline sleeve 27 from slipping relative to the bidirectional lead screw during operation, thereby reducing the frequent floating of the bidirectional lead screw.

[0036] In this embodiment, the outer end of the X-axis bidirectional lead screw 26 is connected to the end of the X-axis slide rail 21 via a sliding bearing.

[0037] This configuration allows the X-axis bidirectional lead screw 26 to move relative to the spline sleeve 27 by rotating the locking screw 29. After adjusting the position of the X-axis bidirectional lead screw 26 according to the coil size, the locking screw 29 can be rotated to lock the X-axis bidirectional lead screw 26, thus adapting to coils of different sizes and improving versatility.

[0038] The inner X-axis shaping part 22 includes an inner slider 221. An upwardly extending inner fixing bracket 222 is installed on the top of the inner slider 221. An inner orthopedic plate 223 is installed on the outside of the inner fixing bracket 222 for orthopedic shaping of the inner side of the coil.

[0039] Preferably, the inner fixing bracket 222 is detachably installed on the inner slider 221; that is, the inner fixing bracket 222 and the inner orthotic plate 223 can be appropriately replaced according to the coil size.

[0040] The outer X-axis shaping part 23 includes an outer slider 231. An upwardly extending outer fixing bracket 232 is installed on the top of the outer slider 231. An outer orthopedic plate 233 is installed on the outer side of the outer fixing bracket 232 for orthopedic shaping of the outer side of the coil.

[0041] Preferably, the outer fixing bracket 232 is detachably mounted on the outer slider 231; that is, the appropriate outer fixing bracket 232 and outer orthotic plate 233 can be replaced according to the coil size.

[0042] It should be noted that the structure of the Y-axis orthopedic component 3 is almost identical to that of the X-axis orthopedic component 2 described above. Therefore, the identical structures of the Y-axis orthopedic component 3 and the X-axis orthopedic component 2 will not be described again here. Only the differences will be explained as follows:

[0043] Combined with appendix Figure 1 and 3 The X-axis straightening component 2 has an arc-shaped plate with an arc of less than 180 degrees; the Y-axis straightening component 3 has a straight plate with arc-shaped parts on both sides. This allows the coil to be clamped at the position where the radius of curvature changes during the straightening process, preventing warping in that area.

[0044] Preferably, the arc of the arc-shaped part on the side of the Y-axis orthopedic assembly 3 is 10~15°.

[0045] It should be noted that the sum of the curvature of the two arc-shaped parts and the curvature of the orthotic plate of the X-axis orthotic component 2 is slightly less than 180 degrees; that is, the curvature of the orthotic plate of the X-axis orthotic component 2 is 150~160°.

[0046] Example 2, in conjunction with Appendix Figure 2 A long oval coil straightening fixture, which differs from Embodiment 1 in that: the inner middle of the X-axis movable pad 25 is provided with an inner recess 251, and the end of the inner elastic pull rope 241 is connected to the inner recess 251; that is, the outer end of the inner elastic pull rope 241 is connected to the inner recess 251, and the inner end is connected to the inner slider 221 of the inner X-axis shaping part 22.

[0047] The X-axis movable pad 25 has an outer recess 252 at both ends on the inner side. The outer elastic pull rope 242 has two ends connected to the corresponding outer recess 252. That is, the inner end of the outer elastic pull rope 242 is connected to the outer recess 252, and the outer end is connected to the outer slider 231 of the outer X-axis shaping part 23.

[0048] In other words, the cross-section of the X-axis movable pad 25 can be a fan-shaped surface or a "convex" shaped surface with a recess in the middle of the bottom.

[0049] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. An oval coil orthopedic tooling, comprising a bearing table, an X-axis orthopedic assembly and a Y-axis orthopedic assembly, characterized in that: The support platform has an X-axis clearance groove that runs vertically through the center and a Y-axis clearance groove that runs vertically through the center. There are two X-axis clearance grooves symmetrically arranged along the Y-axis clearance groove. The orthopedic assembly includes a slide rail, each segment of which has a pair of synchronously moving and oppositely moving shaping parts, and a movable pad is connected between the pair of shaping parts by an elastic element to support the area of ​​the coil corresponding to the clearance groove.

2. The oblong coil shaping tool of claim 1, wherein: Each section of the slide rail is rotatably connected to a bidirectional lead screw, and the two lead screw parts of the bidirectional lead screw respectively cooperate with two shaping parts in a pair of shaping parts.

3. The oblong coil shaping tool of claim 2, wherein: The inner ends of the two bidirectional lead screws on the slide rail are provided with spline grooves and are slidably connected by spline groove sleeves. The spline groove sleeves are rotatably connected to the middle of the slide rail through bearing seats.

4. The oblong coil shaping tool of claim 1, wherein: The elastic element includes an inner elastic pull rope and an outer elastic pull rope. The inner elastic pull rope is connected between the movable pad and the inner shaping part, and the outer elastic pull rope is connected between the movable pad and the outer shaping part.

5. An oblong coil orthopaedic tool according to claim 4, wherein: The movable pad in the X-axis orthopedic assembly has an inner recess in the middle of its inner side that connects to the corresponding inner elastic pull rope.

6. An oblong coil orthopaedic tool according to claim 4, wherein: The movable pad in the X-axis orthopedic assembly has an outer recess at both ends of the outer side that connects to the corresponding outer elastic pull rope.

7. The oblong coil orthopaedic tool of claim 1, wherein: The shaping part includes a slider, and an upwardly extending fixing bracket is installed on the top of the slider. The fixing bracket has an orthopedic plate on the side corresponding to the position of the coil.

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