Transformer coil outlet bending tool

Abstract

The invention relates to a transformer coil outlet bending tool which comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are rotatably connected through a rotating shaft, and a first bending driving part is arranged on the surface, facing the second clamping part, of the first clamping part. A second bending driving part is arranged on the surface, facing the first clamping part, of the second clamping part, and the first bending driving part and the second bending driving part can rotate around the rotating shaft; and the relative positions of the first bending driving part and the second bending driving part are changed between the positions located on the two sides of the rotating shaft and the positions located on the same side of the rotating shaft at the same time. The transformer coil outlet bending tool is simple in structure, easy to manufacture, low in cost, high in operability and convenient to use, the bending radius of the transformer coil outlet can be adjusted by adjusting the radius of the rotating shaft, bending of the transformer coil outlet is more labor-saving by adjusting the lengths of force arms of the first clamping part and the second clamping part, and the bending efficiency is improved. And the bending angle is easier to control.

Description

Technical Field

[0001] The invention relates to the technical field of transformer manufacturing, and in particular to a transformer coil head bending tool. Background Art

[0002] The transformer coil is made of copper wire. After the transformer coil is wound, the production staff needs to bend the end of the transformer coil 90 degrees according to the order of the drawing. Since the copper wire used to wind the transformer coil is multi-stranded, it is difficult to bend it manually and the angle is difficult to control. Summary of the invention

[0003] The object of the present invention is to provide a transformer coil head bending tool so as to facilitate the bending of the transformer coil head and reduce the difficulty of the bending.

[0004] To achieve the above object, the present invention provides the following technical solutions: A transformer coil end bending tool comprises a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are rotatably connected via a rotating shaft, a first bending drive part is arranged on a surface of the first clamping part facing the second clamping part, the first bending drive part extends toward the second clamping part, a second bending drive part is arranged on a surface of the second clamping part facing the first clamping part, the second bending drive part extends toward the first clamping part, and the first bending drive part and the second bending drive part can rotate around the rotating shaft so that the relative positions of the first bending drive part and the second bending drive part can be changed between positions respectively located on both sides of the rotating shaft and positions simultaneously located on the same side of the rotating shaft.

[0005] In one embodiment of the present application, the distance between the first clamping portion and the second clamping portion along the axial direction of the rotating shaft is adjustable.

[0006] In one embodiment of the present application, a screw is provided on the surface of the first clamping part facing the second clamping part, and the second clamping part is provided with a through hole for the screw to pass through. The screw passes through the through hole and cooperates with a nut. The screw serves as the rotating shaft to rotatably connect the first clamping part and the second clamping part, and makes the axial gap between the first clamping part and the second clamping part adjustable.

[0007] In one embodiment of the present application, it further includes a sleeve adapted to the screw rod, and the sleeve is sleeved outside the screw rod between the first clamping portion and the second clamping portion.

[0008] In one embodiment of the present application, the nut is a butterfly nut.

[0009] In one embodiment of the present application, an angle mark is provided around the through hole on the surface of the second clamping portion facing away from the first clamping portion, and an indicator mark is provided at one end of the screw away from the first clamping portion, and the angle mark cooperates with the indicator mark to indicate the angle between the first clamping portion and the second clamping portion.

[0010] In one embodiment of the present application, the distance between the first bending drive part and the rotating shaft is equal to the distance between the second bending drive part and the rotating shaft.

[0011] In one embodiment of the present application, the first bending driving unit and the second bending driving unit include: Central axis; The roller body is sleeved on the central axis and can rotate relative to the central axis.

[0012] In one embodiment of the present application, an elastic pad is provided on the outer peripheral surface of the roller body.

[0013] In one embodiment of the present application, a first gripping portion is disposed at one end of the first clamping portion, and a second gripping portion is disposed at one end of the second clamping portion.

[0014] It can be seen from the above technical scheme that the present invention discloses a transformer coil end bending tool, which includes a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are rotatably connected through a rotating shaft, a first bending drive part is provided on the surface of the first clamping part facing the second clamping part, and the first bending drive part extends toward the second clamping part, and a second bending drive part is provided on the surface of the second clamping part facing the first clamping part, and the second bending drive part extends toward the first clamping part, and the first bending drive part and the second bending drive part can rotate around the rotating shaft so that the relative positions of the first bending drive part and the second bending drive part can be changed between positions respectively located on both sides of the rotating shaft and positions simultaneously located on the same side of the rotating shaft.

[0015] When in use, firstly, the first clamping part and the second clamping part of the transformer coil head bending tool are unfolded to the positions where the first bending driving part and the second bending driving part are respectively located on both sides of the rotating shaft, and then the transformer coil head is passed from the first side of the transformer coil head bending tool through the gap between the first bending driving part and the rotating shaft to the second side of the transformer coil head bending tool, and then from the second side of the transformer coil head bending tool through the gap between the rotating shaft and the second bending driving part to the first side of the transformer coil head bending tool. After the transformer coil head is passed through, the first clamping part and the second clamping part of the transformer coil head bending tool are relatively rotated toward the first side of the transformer coil head bending tool, so as to realize the bending of the transformer coil head. It can be seen that the above-mentioned transformer coil head bending tool has a simple structure, is easy to manufacture, has low cost, high operability, is easy to use, and the bending radius of the transformer coil head can be adjusted by adjusting the radius of the rotating shaft, and the bending of the transformer coil head can be made more labor-saving and easier to control the bending angle by adjusting the force arm length of the first clamping part and the second clamping part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a transformer coil tip bending tool provided in an embodiment of the present invention; Figure 2 A schematic structural diagram of a first clamping portion of a transformer coil tip bending tool provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a second clamping portion of a transformer coil tip bending tool provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a nut of a transformer coil protrusion bending tool provided in an embodiment of the present invention.

[0018] In the figure: 1 is the first clamping part; 2 is the first bending driving part; 3 is the second clamping part; 4 is the second bending driving part; 5 is the screw rod; 6 is the nut; 601 is the threaded body; 602 is the wing plate; 7 is the sleeve; 8 is the first holding part; 9 is the second holding part; 10 is the through hole. DETAILED DESCRIPTION

[0019] The core of the present invention is to provide a transformer coil head bending tool. The structural design of the transformer coil head bending tool makes it easy to bend the transformer coil head and reduce the difficulty of bending.

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 , Figure 1 A schematic structural diagram of a transformer coil end bending tool provided in an embodiment of the present invention.

[0022] An embodiment of the present invention discloses a transformer coil tip bending tool, which includes a first clamping portion 1 and a second clamping portion 3 .

[0023] Among them, the first clamping part 1 and the second clamping part 3 are rotatably connected through a rotating shaft. The rotating shaft can be fixedly set on one of the first clamping part 1 and the second clamping part 3, and can also be detachably connected to the first clamping part 1 or the second clamping part 3, so as to facilitate the replacement of rotating shafts of different diameters to meet the bending of transformer coils of different sizes. The first bending drive part 2 is provided on the surface of the first clamping part 1 facing the second clamping part 3, and the first bending drive part 2 extends toward the second clamping part 3. The second bending drive part 4 is provided on the surface of the second clamping part 3 facing the first clamping part 1, and the second bending drive part 4 extends toward the first clamping part 1. The first bending drive part 2 and the second bending drive part 4 can rotate around the rotating shaft so that the relative positions of the first bending drive part 2 and the second bending drive part 4 can be changed between positions located on both sides of the rotating shaft and positions located on the same side of the rotating shaft at the same time.

[0024] In this case, the first clamping part 1, the second clamping part 3, the first bending drive part 2, the second bending drive part 4 and the rotating shaft are made of high-hardness and wear-resistant materials, such as stainless steel, carbon steel and other materials.

[0025] In the present case, the first bending drive part 2 can be fixedly arranged on the first clamping part 1, or can be detachably arranged on the first clamping part 1, so that the first bending drive part 2 can be replaced, and the gap between the first bending drive part 2 and the rotating shaft and the length of the first bending drive part 2 can be adjusted to better adapt to the bending of transformer coils of different specifications.

[0026] The second bending drive part 4 can be fixedly arranged on the second clamping part 3, or can be detachably arranged on the second clamping part 3, so that the second bending drive part 4 can be replaced, and the gap between the second bending drive part 4 and the rotating shaft and the length of the second bending drive part 4 can be adjusted to better adapt to the bending of transformer coils of different specifications.

[0027] It can be foreseen that there should be a gap between the first bending driving part 2 and the second clamping part 3 and between the second bending driving part 4 and the first clamping part 1 to avoid affecting the relative rotation of the first clamping part 1 and the second clamping part 3.

[0028] When in use, first unfold the first clamping part 1 and the second clamping part 3 of the transformer coil head bending tool to the positions where the first bending drive part 2 and the second bending drive part 4 are respectively located on both sides of the rotating shaft. It should be noted that in order to facilitate the insertion of the transformer coil head before bending, it is necessary to first rotate the first bending drive part 2 and the second bending drive part 4 from the positions on the same side of the rotating shaft to the second side of the transformer coil head bending tool until the first bending drive part 2 and the second bending drive part 4 are both located on the second side of the rotating shaft. At this time, the axes of the first bending drive part 2 and the second bending drive part 4 are not on the same plane as the axis of the rotating shaft, so as to facilitate the passage of the transformer coil head.

[0029] Then the transformer coil head is passed from the first side of the transformer coil head bending tool through the gap between the first bending drive part 2 and the rotating shaft to the second side of the transformer coil head bending tool, and then from the second side of the transformer coil head bending tool through the gap between the rotating shaft and the second bending drive part 4 to the first side of the transformer coil head bending tool. After the transformer coil head is passed through, the first clamping part 1 and the second clamping part 3 of the transformer coil head bending tool are rotated relative to each other toward the first side of the transformer coil head bending tool, thereby realizing the bending of the transformer coil head.

[0030] Compared with the prior art, the transformer coil head bending tool provided in the embodiment of the present invention has a simple structure, is easy to manufacture, has low cost, high operability, and is easy to use. The bending radius of the transformer coil head can be adjusted by adjusting the radius of the rotating shaft, and the bending of the transformer coil head can be made more labor-saving and the bending angle can be more easily controlled by adjusting the force arm length of the first clamping part 1 and the second clamping part 3.

[0031] In order to adapt to the bending of transformer coil ends of different specifications, in one embodiment of the present application, the distance between the first clamping part 1 and the second clamping part 3 along the axial direction of the rotating shaft is adjustable, so that the distance between the first clamping part 1 and the second clamping part 3 can be adjusted according to the specifications of the coil to be bent, so that the transformer coil end bending tool provided in the embodiment of the present application can meet the bending requirements of coil ends of different specifications.

[0032] In the above embodiment, the axial clearance adjustment between the first clamping portion 1 and the second clamping portion 3 can be achieved in various ways, such as Figure 1 and Figure 2 As shown, in a specific embodiment of the present application, a screw 5 is arranged on the surface of the first clamping part 1 facing the second clamping part 3, and a threaded structure is arranged on at least the outer peripheral surface of one end of the screw 5 away from the first clamping part 1, that is, the outer peripheral surface of the screw 5 can be composed of a threaded structure and a bare rod structure, or can be composed of only a threaded structure, and the second clamping part 3 is provided with a through hole 10 for the screw 5 to pass through, as shown in FIG. Figure 3 As shown, the through hole 10 is a light hole, and the through hole 10 passes through the third clamping part 3. The diameter of the through hole 10 is slightly larger than the outer diameter of the threaded structure of the screw 5. The screw 5 passes through the through hole and cooperates with the nut 6. The screw 5 serves as a rotating shaft to rotatably connect the first clamping part 1 and the second clamping part 3. By tightening or loosening the nut 6, the axial clearance between the first clamping part 1 and the second clamping part 3 can be adjusted.

[0033] It should be noted that the above-mentioned screw 5 can adopt an equal-diameter structure, that is, the outer diameter of the threaded structure of the screw 5 is equal to the outer diameter of the smooth rod structure of the screw 5, or can adopt a variable-diameter structure, that is, the outer diameter of the threaded structure of the screw 5 is smaller than the outer diameter of the smooth rod structure of the screw 5, thereby forming a step surface between the threaded structure and the smooth rod structure to support the second clamping part 3.

[0034] In another embodiment, a rotatable first connecting shaft is provided on the surface of the first clamping part 1 facing the second clamping part 3, and a rotatable second connecting shaft is provided on the surface of the second clamping part 3 facing the first clamping part 1, and the adjusting sleeve is threadedly engaged with at least one of the first connecting shaft and the second connecting shaft, that is, the adjusting sleeve can be threadedly engaged with the first connecting shaft and rotationally engaged with the second connecting shaft, or the adjusting sleeve can be threadedly engaged with the second connecting shaft and rotationally engaged with the first connecting shaft, or the adjusting sleeve can be threadedly engaged with the second connecting shaft and rotationally engaged with the first connecting shaft, or the adjusting sleeve is threadedly engaged with the first connecting shaft and the second connecting shaft at the same time, and the threads of the first connecting shaft and the second connecting shaft are set in opposite directions, so that when the adjusting sleeve is rotated, the axial spacing between the first clamping part 1 and the second clamping part 3 can be adjusted, and at the same time, the first connecting shaft, the second connecting shaft and the adjusting sleeve can also serve as the rotating shaft of the first clamping part 1 and the second clamping part 3, playing the role of rotationally connecting the first clamping part 1 and the second clamping part 3.

[0035] Of course, it should be noted that the shaft structure is not limited to the above two types. A cam-connecting rod structure can also be used to realize the rotation and axially adjustable connection between the first clamping part 1 and the second clamping part 3, that is, a connecting rod is arranged on the surface of the first clamping part 1 facing the second clamping part 3, and the second clamping part 3 is provided with a through hole for the connecting rod to pass through. After the connecting rod passes through the through hole, it is rotatably connected to the cam. By rotating the cam, the second clamping part 3 can be tightened and relaxed, thereby realizing the adjustment of the axial clearance between the first clamping part 1 and the second clamping part 3.

[0036] Further optimize the above technical solution, such as Figure 1 and Figure 2 As shown, the transformer coil head bending tool also includes a sleeve 7 adapted to the screw 5. The sleeve 7 is sleeved outside the screw 5 between the first clamping portion 1 and the second clamping portion 3. The inner diameter of the sleeve 7 is slightly larger than the outer diameter of the bare rod structure and / or the threaded structure of the screw 5. The sleeve 7 is used to prevent the threads on the screw 5 from damaging the insulation layer of the transformer coil head. At the same time, the sleeve 7 can rotate relative to the screw 5. During the bending process, it can rotate relative to the screw 5, thereby further reducing the wear on the transformer coil head.

[0037] In a preferred embodiment of the present application, the above-mentioned sleeve 7 is detachable, so that sleeves 7 with different outer diameters and lengths can be replaced during application. The sleeve 7 is used to adjust the gap between the first clamping part 1 and the second clamping part 3 to adapt to transformer coil ends of different specifications. The sleeve 7 can also support the first clamping part 1 and the second clamping part 3, so that the relative rotation of the first clamping part 1 and the second clamping part 3 is smoother, thereby avoiding relative swinging of the two.

[0038] In order to facilitate the adjustment of the axial clearance between the first clamping portion 1 and the second clamping portion 3, in one embodiment of the present application, Figure 1 and Figure 4 As shown, the adjusting nut 6 is a butterfly nut 6, which includes a threaded body 601 and wing plates 602 symmetrically arranged on both sides of the threaded body 601. When rotating the butterfly nut 6, the wing plates 602 can be used to exert force, so that no additional tools are required, which is convenient for operation.

[0039] To further optimize the above technical solution and accurately meet the bending requirements of different transformer coil heads, in one embodiment of the present application, an angle mark is provided around the through hole on the surface of the second clamping part 3 facing away from the first clamping part 1, and an indicator mark is provided at the end of the screw 5 away from the first clamping part 1. The angle mark cooperates with the indicator mark to indicate the angle between the first clamping part 1 and the second clamping part 3. By setting the angle mark and the indicator mark, the processing personnel can accurately control the bending angle by observing the relative position of the angle mark and the indicator mark during the bending process, thereby meeting the bending requirements of different transformer coil heads and improving the bending consistency.

[0040] Of course, an electronic angle detection device can also be provided on the first clamping part 1 and the second clamping part 3 to detect the relative angle between the first clamping part 1 and the second clamping part 3 and emit a prompt sound when the first clamping part 1 and the second clamping part 3 rotate relative to each other to a preset angle.

[0041] As a preferred embodiment, in order to ensure that the transformer coil outlet is evenly stressed on both sides of the shaft, Figure 1 As shown, in one embodiment of the present application, the distance between the first bending drive unit 2 and the rotating shaft is equal to the distance between the second bending drive unit 4 and the rotating shaft.

[0042] In order to avoid damaging the insulating layer on the transformer coil protrusion during the bending process, in one embodiment of the present application, the first bending drive unit 2 and the second bending drive unit 4 include a central axis and a roller body, and the roller body is sleeved on the central axis and can rotate relative to the central axis. It can be foreseen that a stretching effect will inevitably occur during the bending process, and the first bending drive unit 2 and the second bending drive unit 4 will move relative to the transformer coil protrusion. By arranging a rotatable roller body to contact the transformer coil protrusion, the sliding contact can be converted into rolling release, thereby reducing the wear of the transformer coil protrusion by the first bending drive unit 2 and the second bending drive unit 4, and can also reduce the bending resistance, making the bending operation more convenient.

[0043] To further optimize the above technical solution, in one embodiment of the present application, an elastic pad is provided on the outer peripheral surface of the roller body, and the elastic pad includes but is not limited to a rubber pad and a rubber pad.

[0044] As preferably, Figure 1 As shown, in one embodiment of the present application, a first gripping portion 8 is provided at one end of the first clamping portion 1, and a second gripping portion 9 is provided at one end of the second clamping portion 3. The first gripping portion 8 can be fixedly provided on the first clamping portion 1, and the second gripping portion 9 can be fixedly provided on the second clamping portion 3. When in use, the production personnel respectively hold the first gripping portion 8 and the second gripping portion 9, and apply force with both hands toward or in opposite directions to perform bending. Furthermore, the cross-sections of the first gripping portion 8 and the second gripping portion 9 are both circular, so that it is convenient to provide an extension sleeve outside the first gripping portion 8 and the second gripping portion 9 to increase the force arm, which is more labor-saving and convenient for bending.

[0045] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] It should be understood that the use of "system", "device", "unit" and / or "module" in this application is only a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0047] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0048] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0049] If a flow chart is used in the present application, the flow chart is used to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a certain step or several steps of operations can be removed from these processes.

[0050] It should also be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such articles or devices. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0051] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A transformer coil end bending tool, characterized in that: The invention comprises a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are rotatably connected via a rotating shaft, a first bending drive part is arranged on a surface of the first clamping part facing the second clamping part, and the first bending drive part extends toward the second clamping part, and a second bending drive part is arranged on a surface of the second clamping part facing the first clamping part, and the second bending drive part extends toward the first clamping part, and the first bending drive part and the second bending drive part can rotate around the rotating shaft so that the relative positions of the first bending drive part and the second bending drive part can be changed between positions respectively located on both sides of the rotating shaft and positions simultaneously located on the same side of the rotating shaft.

2. The transformer coil tip bending tool according to claim 1, characterized in that: The distance between the first clamping portion and the second clamping portion along the axial direction of the rotating shaft is adjustable.

3. The transformer coil tip bending tool according to claim 2, characterized in that: A screw is arranged on the surface of the first clamping part facing the second clamping part, and a through hole is arranged on the second clamping part for the screw to pass through. The screw passes through the through hole and cooperates with a nut. The screw serves as the rotating shaft to rotatably connect the first clamping part and the second clamping part, and makes the axial gap between the first clamping part and the second clamping part adjustable.

4. The transformer coil tip bending tool according to claim 3, characterized in that: It also includes a sleeve adapted to the screw rod, and the sleeve is sleeved outside the screw rod between the first clamping portion and the second clamping portion.

5. The transformer coil tip bending tool according to claim 3, characterized in that: The nut is a butterfly nut.

6. The transformer coil tip bending tool according to claim 3, characterized in that: The surface of the second clamping part facing away from the first clamping part is provided with angle marks around the through hole, and the end of the screw away from the first clamping part is provided with an indication mark, and the angle mark cooperates with the indication mark to indicate the angle between the first clamping part and the second clamping part.

7. The transformer coil tip bending tool according to any one of claims 1 to 6, characterized in that: The distance between the first bending driving part and the rotating shaft is equal to the distance between the second bending driving part and the rotating shaft.

8. The transformer coil tip bending tool according to any one of claims 1 to 6, characterized in that: The first bending driving unit and the second bending driving unit include: Central axis; The roller body is sleeved on the central axis and can rotate relative to the central axis.

9. The transformer coil tip bending tool according to claim 8, characterized in that: An elastic pad is arranged on the outer peripheral surface of the roller body.

10. The transformer coil tip bending tool according to any one of claims 1 to 6, characterized in that: A first gripping portion is disposed at one end of the first clamping portion, and a second gripping portion is disposed at one end of the second clamping portion.

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