Coil wire transposition tool

Abstract

A coil wire transposition tool belongs to the technical field of transformer production and comprises a wire, a fixing portion and an operating portion, the wire is respectively clamped between the fixing portion and the operating portion, and the fixing portion and the operating portion are connected with each other. The fixing part comprises a back plate and a front pressing plate, the front pressing plate is installed on the back plate, and the front pressing plate presses the wire on the back plate. The upper half portion of the back plate is an upper fixing plate, the lower half portion of the back plate is a rear fixing plate, a height difference exists between the upper fixing plate and the rear fixing plate to form a step, the middle of the upper fixing plate extends downwards to form a first hanging lug, the front pressing plate is installed on the first hanging lug, and a transverse guide hole is formed in the rear side of the top of the upper fixing plate and connected with the operation portion. The operation part comprises a first pressing plate, a second pressing plate, a guide plate and a follower plate, the first pressing plate is slidably mounted on the second pressing plate, the second pressing plate is slidably mounted on the guide plate, and the guide plate is slidably mounted on the follower plate.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer production, and in particular relates to a coil conductor transposition tool. Background Art

[0002] Coil winding is an important part of power transformer. Today's transformer coil winding often adopts transposition technology, which specifically refers to combining a certain number of enameled copper flat wires into two rows with wide sides touching each other, and transposing the same direction along the narrow side above and below the two rows of enameled wires as required, and using electrical insulating paper tape to make multiple layers of continuous and tight winding. The specific operation is to bend the wire to the side wire layer. Wire transposition can greatly reduce load loss, reduce the temperature rise of winding hot spots, improve the mechanical strength of the winding, make the structure more compact, and make coil processing easier. In the field operation, in order to ensure the accuracy of the wire transposition, tools are needed to bend the wire. At present, the bending tools commonly used on site are mostly tools similar to manual wrenches. The wire is bent at a predetermined position to make it transposed into the side wire layer. The accuracy of this operation often needs to rely on the operator's experience and operating ability to control. Summary of the invention

[0003] The present invention provides a coil conductor transposition tool to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions: A coil wire transposition tool comprises a wire, a fixing part and an operating part. The wire is clamped between the fixing part and the operating part respectively, and the fixing part and the operating part are connected to each other.

[0005] The fixing part includes a back plate and a front clamping plate, the front clamping plate is mounted on the back plate, and the front clamping plate clamps the wire on the back plate. The upper half of the back plate is an upper fixing plate, and the lower half of the back plate is a rear fixing plate. There is a height difference between the upper fixing plate and the rear fixing plate to form a step. A first hanging ear piece extends downward from the middle of the upper fixing plate, and the front clamping plate is mounted on the first hanging ear piece. A transverse guide hole is provided on the rear side of the top of the upper fixing plate, and the transverse guide hole is connected to the operating part.

[0006] The operating part includes a first clamping plate, a second clamping plate, a guide plate and a follower plate. The first clamping plate is slidably mounted on the second clamping plate, the second clamping plate is slidably mounted on the guide plate, and the guide plate is slidably mounted on the follower plate. A pair of small guide rods are provided on the first clamping plate, a first spring is mounted on the small guide rods, and the small guide rods are mounted upwardly on the second clamping plate. The upper part of the second clamping plate is the front clamping plate, and the lower rear half of the second clamping plate is the bottom clamping plate. There is a height difference between the front clamping plate and the bottom clamping plate to form a step. The front part of the bottom clamping plate has a pair of first lugs, and the small guide rods are mounted in the first lugs, and the small guide rods slide in the first lugs. The second clamping plate also has a pair of second lugs, and the second lugs are connected and mounted with the guide plate, and the second lugs have waist-shaped holes. The second spring is located between the second lug and the guide lug of the guide plate and is mounted on the lower guide rod of the guide plate.

[0007] The guide plate is provided with a pair of guide lugs, the guide lugs extend downwardly to a lower guide rod, and extend upwardly to an upper guide rod, the lower guide rod is connected to the second clamping plate, the upper guide rod is connected to the follower plate, the middle of the guide plate extends downwardly to a second hanging lug, and the second hanging lug is threadedly connected to the second clamping screw of the second clamping plate. The third spring is sleeved on the upper guide rod and is located between the guide lug and the follower lug of the follower plate. The follower plate is provided with a pair of follower lugs, the upper guide rod is sleeved in the follower lugs, the rear side of the top of the follower plate is provided with a transverse guide rod, the transverse guide rod is connected to the transverse guide hole, and the transverse spring is sleeved on the transverse guide rod.

[0008] Furthermore, the rear end of the upper fixing plate has a first positioning fillet, and the first positioning fillet limits the bending position of the wire so that the wire forms a regular fillet at this position, thereby ensuring the bending quality of the wire.

[0009] Furthermore, the front clamping plate has a first clamping ring on the front side, and a first clamping screw is hingedly installed inside the first clamping ring. The first clamping cover covers the first clamping screw inside the first clamping ring while keeping the first clamping screw rotating. The first clamping screw is threadedly connected to the first hanging ear piece, and rotating the first clamping screw can push the front clamping plate and clamp or loosen the wire.

[0010] Furthermore, the front end of the first clamping plate has a second positioning fillet, and the second positioning fillet limits the bending position of the wire so that the wire forms a regular fillet at this position, thereby ensuring the bending quality of the wire.

[0011] Furthermore, the second clamping plate also has a combination of a second clamping ring, a second clamping cover and a second clamping screw, which has the same function as the similar combination on the front clamping plate, and also realizes the clamping and loosening of the wire by the second clamping plate.

[0012] Further, the elastic coefficients of the springs are in the following relationship: the first spring is slightly smaller than the second spring, much smaller than the third spring, much smaller than the transverse spring. When the guide plate is in the lower position, the lower edge of the guide plate is flush with the lower edge of the upper fixed plate.

[0013] The beneficial effects of the present invention are: The present invention is used for the conductor transposition operation of the transformer coil winding, and has a precise positioning capability, can accurately align the position that needs to be bent and transposed, and can accurately locate the spacing of the bending points. During the operation, the bottom and the front of the conductor are compressed at one time, and the offset distance of the conductor bending can be accurately controlled. During the whole process of the conductor bending, the axial tension of the conductor is provided, which can effectively ensure the bending quality of the conductor and effectively reduce the rebound of the conductor after the bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is an exploded view of the present invention; In the figure: 10. Wire, 20. Fixing part, 21. Back plate, 211. Upper fixing plate, 212. Rear fixing plate, 213. First positioning fillet, 214. First hanging ear, 215. Transverse guide hole, 22. Front clamping plate, 221. First clamping ring, 222. First clamping cover, 223. First clamping screw, 30. Operating part, 31. First clamping plate, 311. Second positioning fillet, 312. Small guide rod, 313. First spring, 32. Second clamping plate, 321. Front clamping plate, 322. Bottom clamping plate, 323. First ear, 324. Second ear, 325. Second clamping ring, 326. Second clamping cover, 327. Second clamping screw, 328. Second spring, 33. Guide plate, 331. Guide ear, 332. Lower guide rod, 333. Upper guide rod, 334. Second hanging ear, 335. Third spring, 34. Follower plate, 341. Follower ear, 342. Transverse guide rod, 343. Transverse spring. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0016] See also Figure 1-Figure 3The coil wire transposition tool shown includes a wire 10, a fixing portion 20 and an operating portion 30. The wire 10 is clamped between the fixing portion 20 and the operating portion 30, respectively, and the fixing portion 20 and the operating portion 30 are connected to each other.

[0017] The fixing portion 20 includes a back plate 21 and a front pressing plate 22 . The front pressing plate 22 is mounted on the back plate 21 , and the front pressing plate 22 presses the wire 10 onto the back plate 21 .

[0018] The upper half of the back plate 21 is an upper fixing plate 211, and the lower half of the back plate 21 is a rear fixing plate 212. There is a height difference between the upper fixing plate 211 and the rear fixing plate 212 to form a step, and the step is the position where the upper edge of the wire 10 is clamped. The rear end of the upper fixing plate 211 has a first positioning fillet 213, and the first positioning fillet 213 limits the bending of the wire 10 so that the wire 10 forms a regular fillet here to ensure the bending quality of the wire. The middle part of the upper fixing plate 211 extends downwardly from the first hanging ear 214, and the front clamping plate 22 is installed on the first hanging ear 214. The rear side of the top of the upper fixing plate 21 has a transverse guide hole 215, and the transverse guide hole 215 is connected to the operating part 30.

[0019] The front clamping plate 22 has a first clamping ring 221 on the front side, and a first clamping screw 223 is hingedly installed inside the first clamping ring 221. The first clamping cover 222 covers the first clamping screw 223 inside the first clamping ring 221 while keeping the first clamping screw 223 rotating. The first clamping screw 223 is threadedly connected to the first hanging ear 214. Rotating the first clamping screw 223 can push the front clamping plate 22 and clamp or loosen the wire 10.

[0020] The operating part 30 includes a first clamping plate 31, a second clamping plate 32, a guide plate 33 and a follower plate 34. The first clamping plate 31 is slidably mounted on the second clamping plate 32, the second clamping plate 32 is slidably mounted on the guide plate 33, and the guide plate is slidably mounted on the follower plate 34. The wire 10 is clamped between the second clamping plate 32 and the follower plate 34, and the upper and lower edges of the wire 10 are clamped by the first clamping plate 31 and the guide plate 33.

[0021] The front end of the first clamping plate 31 has a second positioning fillet 311, and the second positioning fillet 311 limits the bending position of the wire 10 so that the wire 10 forms a regular fillet here to ensure the bending quality of the wire. The first clamping plate 31 has a pair of small guide rods 312, and the small guide rods 312 are fitted with a first spring 313. The small guide rods 312 are fitted upward on the second clamping plate 32.

[0022] The upper part of the second clamping plate 32 is a front clamping plate 321, which clamps the wire 10 from the front. The lower rear half of the second clamping plate 32 is a bottom clamping plate 322. There is a height difference between the front clamping plate 321 and the bottom clamping plate 322 to form a step, which clamps the wire from the bottom edge of the wire 10. The front part of the bottom clamping plate 322 has a pair of first ear pieces 323, and a small guide rod 312 is installed in the first ear piece 323. The small guide rod 312 slides in the first ear piece 323. The second clamping plate 32 also has a pair of second ear pieces 324, which are connected and installed with the guide plate 33. The second ear piece 324 has a waist-shaped hole. The structure of the waist-shaped hole allows the second clamping plate 32 to slide up and down together with the first clamping plate 31, so as to realize the installation and clamping operation of the wire 10. The second clamping plate 32 also has a combination of a second clamping ring 325, a second clamping cover 326 and a second clamping screw 327. The function of this combination is consistent with the similar combination on the front clamping plate 22, and it also realizes the clamping and loosening of the wire 10 by the second clamping plate 32. The second spring 328 is located between the second ear 324 and the guide ear 331 of the guide plate 33 and is fitted on the lower guide rod 332 of the guide plate 33.

[0023] The guide plate 33 has a pair of guide lugs 331, the guide lugs 331 extend downwardly to a lower guide rod 332, and extend upwardly to an upper guide rod 333, the lower guide rod 332 is connected to the second clamping plate 32, the upper guide rod 333 is connected to the follower plate 34, a second hanging lug 334 extends downwardly from the middle of the guide plate 33, and the second hanging lug 334 is threadedly connected to the second clamping screw 327 of the second clamping plate 32, so that the second clamping plate 32 can clamp and release the wire 10. The third spring 335 is sleeved on the upper guide rod 333, and is located between the guide lug 331 and the follower lug 341 of the follower plate 34.

[0024] The follower plate 34 is provided with a pair of follower ears 341, and the upper guide rod 333 is installed in the follower ears 341. The top rear side of the follower plate 34 is provided with a transverse guide rod 342, and the transverse guide rod 342 is connected to the transverse guide hole 215. A transverse spring 343 is installed on the transverse guide rod 342. The transverse spring 343 always pushes the follower plate 34 to have a tendency to move backward, and applies tension to the wire during the whole process of the wire bending, which can effectively improve the bending quality of the wire and reduce the rebound of the wire after bending, thereby improving the dimensional accuracy.

[0025] In this technical solution, the elastic coefficients of the springs are as follows: the first spring 313 is slightly smaller than the second spring 328, much smaller than the third spring 335, much smaller than the transverse spring 343. When the guide plate 33 is in the lower position, the lower edge of the guide plate 33 is flush with the lower edge of the upper fixing plate 211.

[0026] The working principle of the present invention is: when the entire transposition tool is in a free state, the front clamping plate 22 is in a relaxed state, the first clamping plate 31 is in a lower position, the second clamping plate 32 is in a lower position and in a relaxed state, and the guide plate 33 is in a lower position. At this time, the wire 10 to be transposed is inserted between the front clamping plate 22 and the rear fixing plate 212 from the lower gap, and the first clamping screw 223 is tightened to clamp the wire 10. The follower plate 34 is pushed laterally so that the spacing between the second positioning fillet 311 and the first positioning fillet 213 is the predetermined wire bending spacing, and the position is maintained, and the first clamping plate 31 is pressed upward so that the first clamping plate 31 is aligned with the lower edge of the wire 10, and then the second clamping plate 32 is pressed so that the step between the front clamping plate 321 and the bottom clamping plate 322 is aligned with the lower edge of the wire 10, and then the second clamping screw 327 is tightened, and the second clamping plate 32 is pressed by the wire 10. Then, the first pressing plate 31 and the second pressing plate 32 are pressed to compress the third spring 335 until the moving distance of the guide plate 33 reaches the predetermined wire transposition spacing, and the bending operation is completed. During the whole process, the transverse spring 343 always provides a transverse thrust, so that the wire 10 always has an axial tension. Of course, it should be noted that the order should be paid attention to when the bending operation is completed and the wire 10 is released. The second pressing screw 327 should be loosened first to release the bent wire 10, and then each spring should be released to avoid the rebound force of each spring from having a reverse effect on the wire.

[0027] The above embodiments mainly illustrate the coil wire transposition tool of the present invention. Although only limited embodiments and technical features are described, those skilled in the art should understand that the present invention can be implemented in many other forms without departing from its spirit and scope. Therefore, the embodiments shown are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and replacement schemes without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A coil conductor transposition tool, comprising a conductor (10), a fixing part (20) and an operating part (30), characterized in that: The wire (10) is clamped between the fixing part (20) and the operating part (30), respectively. The fixing part (20) and the operating part (30) are connected to each other. The fixing part (20) comprises a back plate (21) and a front pressing plate (22). The front pressing plate (22) is mounted on the back plate (21). The front pressing plate (22) presses the wire (10) onto the back plate (21). The upper half of the back plate (21) is an upper fixing plate (211), and the lower half of the back plate (21) is a rear fixing plate (212). There is a height difference between the upper fixing plate (211) and the rear fixing plate (212) to form a step. A first hanging ear piece (214) extends downward from the middle of the upper fixing plate (211). The front pressing plate (22) is mounted on the first hanging ear piece (214). The upper fixed plate (21) has a transverse guide hole (215) on the rear side of the top, and the transverse guide hole (215) is connected to the operating part (30). The operating part (30) includes a first clamping plate (31), a second clamping plate (32), a guide plate (33) and a follower plate (34). The first clamping plate (31) is slidably mounted on the second clamping plate (32), the second clamping plate (32) is slidably mounted on the guide plate (33), and the guide plate is slidably mounted on the follower plate (34). The wire (10) is clamped between the second clamping plate (32) and the follower plate (34). At the same time, the upper and lower edges of the wire (10) are clamped by the first clamping plate (31) and the guide plate (33). The first clamping plate (31) has a pair of small guide rods (312). The small guide rods (312) is sleeved with a first spring (313), the small guide rod (312) is sleeved and installed on the second clamping plate (32) upwardly, the upper part of the second clamping plate (32) is a front clamping plate (321), the front clamping plate (321) presses the wire (10) from the front, the lower rear half of the second clamping plate (32) is a bottom clamping plate (322), there is a height difference between the front clamping plate (321) and the bottom clamping plate (322) to form a step, the front part of the bottom clamping plate (322) has a pair of first ear pieces (323), the small guide rod (312) is sleeved and installed in the first ear piece (323), the small guide rod (312) slides in the first ear piece (323), and the second clamping plate (32) also has a pair of second ear pieces (324) The second ear piece (324) is connected and installed with the guide plate (33), and a waist-shaped hole is provided in the second ear piece (324). The second spring (328) is located between the second ear piece (324) and the guide ear piece (331) of the guide plate (33) and is sleeved on the lower guide rod (332) of the guide plate (33). The guide plate (33) has a pair of guide ear pieces (331). The guide ear piece (331) extends downwardly to the lower guide rod (332) and extends upwardly to the upper guide rod (333). The lower guide rod (332) is connected with the second pressing plate (32), and the upper guide rod (333) is connected with the follower plate (34). The second hanging ear piece (334) extends downwardly from the middle part of the guide plate (33), and the third spring (335) is sleeved on the upper guide rod (333).Located between the guide ear piece (331) and the follower ear piece (341) of the follower plate (34), the follower plate (34) has a pair of follower ear pieces (341), the follower ear pieces (341) are sleeved with the upper guide rod (333), the top rear side of the follower plate (34) has a transverse guide rod (342), the transverse guide rod (342) is connected to the transverse guide hole (215), and the transverse spring (343) is sleeved on the transverse guide rod (342).

2. The coil conductor transposition tool according to claim 1, characterized in that: The upper fixing plate (211) has a first positioning fillet (213) at the rear end, and the first positioning fillet (213) limits the bending position of the wire (10) so that the wire (10) forms a regular fillet at this position.

3. The coil conductor transposition tool according to claim 1, characterized in that: The front pressing plate (22) has a first pressing ring (221) on its front side, a first pressing screw (223) is hingedly installed inside the first pressing ring (221), a first pressing cover (222) covers the first pressing screw (223) inside the first pressing ring (221), and the first pressing screw (223) is threadedly connected to the first hanging ear piece (214).

4. The coil conductor transposition tool according to claim 1, characterized in that: The front end of the first pressing plate (31) has a second positioning fillet (311), and the second positioning fillet (311) limits the bending position of the wire (10) so that the wire (10) forms a regular fillet at this position.

5. The coil conductor transposition tool according to claim 1, characterized in that: The second pressing plate (32) also has a combination of a second pressing ring (325), a second pressing cover (326) and a second pressing screw (327), and the function of the combination is consistent with that of a similar combination on the front pressing plate (22).

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