Outer-diameter-adjustable winding mold of cake type coil

Abstract

The utility model relates to the technical field of dies, in particular to an outer-diameter-adjustable winding die of a pancake coil, which comprises a rotating shaft part, a fixed supporting piece and an adjustable supporting piece. The fixed supporting piece and the adjusting supporting piece are in slope fit through the first slope and the second slope, so that when the adjusting supporting piece is inserted into the groove, the height of the portion, protruding out of the groove, of the supporting edge of the adjusting supporting piece is gradually increased, and the adjusting supporting piece gradually abuts against an inner barrel of the cake type coil; and the inner cylinder of the cake-type coil can be conveniently supported by the fixed supporting piece. After winding of the cake type coil is completed, the adjusting supporting piece is knocked at the side opening away from the insertion side and then withdrawn, due to the fact that the first inclined face and the second inclined face are matched in an inclined mode, the supporting edge can gradually leave an inner cylinder of the cake type coil, the adjusting supporting piece is not fastened any more and is pulled out subsequently, and the adjusting supporting piece can be taken out conveniently.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an adjustable outer diameter winding mold for a disc coil. Background Technology

[0002] In the transformer manufacturing process, the high-voltage and low-voltage coil windings of the transformer generally need to be wound first. This is done by tightly winding the conductors onto a winding mold. After the winding is completed, the winding mold is then removed. However, existing winding molds generally include two circular support pieces and several support bars wound around the outer circumference of the support pieces. The support pieces and support bars constitute a generally cylindrical winding mold, and the support pieces and support bars are fixedly set. After the coil winding is completed, the winding mold is difficult to remove. It requires a great deal of mechanical force to remove the winding mold from the completed coil winding, which wastes labor and resources and has certain defects. Utility Model Content

[0003] The main purpose of this invention is to provide an adjustable outer diameter winding mold for disc coils, which facilitates the removal of the support bar after winding is completed.

[0004] To achieve the above objectives, this utility model proposes an adjustable outer diameter winding mold for a disc-shaped coil, comprising:

[0005] The rotating shaft has several grooves on its side. The length direction of each groove is parallel to the axial direction of the rotating shaft, and the depth direction of each groove is set along the radial direction of the rotating shaft. The two ends of the groove in the length direction are respectively provided with side openings.

[0006] A fixed support member is fixedly disposed in the groove, and the fixed support member has a first inclined surface forming a slope on the side away from the bottom of the groove;

[0007] An adjusting support is provided, which is detachably inserted into and withdrawn from the groove through the side opening. The adjusting support is located above the fixed support. A second inclined surface is provided on the side of the adjusting support near the fixed support. The slope of the second inclined surface is the same as that of the first inclined surface. The first inclined surface abuts against the second inclined surface. A supporting edge protruding from the groove is provided on the side of the adjusting support away from the fixed support. The length direction of the supporting edge is parallel to the axial direction of the rotating shaft.

[0008] Optionally, the length of the first inclined surface in the horizontal direction is the same as the length of the fixed support, the length of the second inclined surface in the horizontal direction is the same as the length of the adjusting support, the length of the adjusting support is the same as that of the fixed support, and the maximum height of the fixed support is less than the depth of the groove.

[0009] Optionally, the rotating shaft includes a plurality of spokes and a plurality of profiles. The plurality of spokes are spaced apart along the same axial direction and are arranged to overlap along the axial direction. The plurality of profiles are distributed around the outer periphery of the spokes and are provided with the grooves.

[0010] Optionally, a first threaded assembly is provided between the profile and the spoke, the first threaded assembly including a first bolt and a first nut, a connecting plate is provided on the end face of the spoke, the connecting plate is provided with a first through hole, the profile is provided with a second through hole, and the fixed support is provided with a clearance hole. The first through hole, the second through hole and the clearance hole are correspondingly connected. The stud end of the first bolt passes through the clearance hole, the second through hole and the first through hole and is threadedly connected to the first nut. The head of the first bolt abuts against the profile.

[0011] Optionally, a second threaded assembly is provided between the fixed support and the profile. The second threaded assembly includes a second bolt and a second nut. The fixed support has a stepped hole, and the profile has a third through hole that communicates with the stepped hole. The stud end of the second bolt passes through the stepped hole and the third through hole and is threadedly connected to the second nut. The head of the second bolt is located in the stepped hole and abuts against the step of the stepped hole.

[0012] Optionally, the spokes at both ends of the pivot are provided with lugs.

[0013] Optionally, the spokes are provided with a plurality of annularly arrayed lightening through holes.

[0014] Optionally, the spokes have a connecting through hole at their center, and the connecting through hole is square.

[0015] The technical solution provided by this utility model can include the following beneficial effects:

[0016] In this invention, the fixed support and the adjusting support are engaged by a first and a second inclined plane. As the adjusting support is inserted deeper into the groove, the height of its supporting edge protruding from the groove gradually increases, causing the adjusting support to gradually press against the inner cylinder of the disc coil, facilitating the fixed support's tightening of the disc coil's inner cylinder. After the disc coil is wound, the adjusting support is removed by tapping it through the side opening away from the insertion side. Because the first and second inclined planes are engaged at an angle, the supporting edge gradually moves away from the inner cylinder of the disc coil, and the adjusting support is no longer secured, allowing it to be easily pulled out. Furthermore, the adjusting support is detachably engaged within the groove. When the specifications of the adjusting support cannot meet the usage requirements, other specifications of adjusting supports can be replaced to increase the adjustment range of the outer diameter. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the end structure of the adjustable outer diameter winding mold of this utility model;

[0019] Figure 2 This is a schematic diagram of the end structure of the rotating shaft of this utility model;

[0020] Figure 3 This is a schematic diagram of the axial cross-sectional structure of the adjustable outer diameter winding mold of this utility model.

[0021] Figure 4 for Figure 3 An enlarged structural diagram of region A in the embodiment;

[0022] Figure 5 This is a schematic diagram of the axial cross-sectional structure of the profile of this utility model;

[0023] Explanation of reference numerals: 100-Shaft, 110-Groove, 111-Side opening, 120-Spoke, 121-Connecting plate, 122-First through hole, 123-Lifting lug, 124-Lightening through hole, 125-Connecting through hole, 130-Profile, 131-Second through hole, 132-Third through hole, 200-Fixed support, 210-First inclined surface, 220-Allowing hole, 230-Stepped hole, 300-Adjusting support, 310-Second inclined surface, 320-Support edge, 400-First threaded assembly, 410-First bolt, 420-First nut, 500-Second threaded assembly, 510-Second bolt, 520-Second nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] The following is combined with Figures 1 to 5 This invention describes an adjustable outer diameter winding mold for a disc-shaped coil, comprising:

[0029] A rotating shaft portion 100 has a plurality of grooves 110 on its side. The length direction of each groove 110 is parallel to the axial direction of the rotating shaft portion 100, and the depth direction of each groove 110 is arranged along the radial direction of the rotating shaft portion 100. Side openings 111 are respectively provided at both ends of the length direction of the groove 110.

[0030] A fixed support member 200 is fixedly disposed in the groove 110, and the fixed support member 200 has a first inclined surface 210 forming a slope on the side away from the bottom of the groove 110.

[0031] An adjusting support 300 is provided, which is detachably inserted into and withdrawn from the groove 110 through the side opening 111. The adjusting support 300 is located above the fixed support 200. A second inclined surface 310 is provided on the side of the adjusting support 300 near the fixed support 200. The slope of the second inclined surface 310 is the same as that of the first inclined surface 210. The first inclined surface 210 abuts against the second inclined surface 310. A supporting edge 320 protruding from the groove 110 is provided on the side of the adjusting support 300 away from the fixed support 200. The length direction of the supporting edge 320 is parallel to the axial direction of the rotating shaft portion 100.

[0032] In this invention, the fixed support 200 and the adjusting support 300 are engaged by a first inclined surface 210 and a second inclined surface 310. As the adjusting support 300 is inserted deeper into the groove 110, the height of its supporting edge 320 protruding from the groove 110 gradually increases, causing the adjusting support 300 to gradually press against the inner cylinder of the disc coil, facilitating the fixed support 200's support of the disc coil's inner cylinder. After the disc coil is wound, the adjusting support 300 is removed by tapping it through the side opening 111 away from the insertion side. Because the first inclined surface 210 and the second inclined surface 310 are engaged at an angle, the supporting edge 320 gradually moves away from the inner cylinder of the disc coil, and the adjusting support 300 is no longer secured, allowing it to be easily pulled out. In addition, the adjusting support 300 is detachably abutted in the groove 110. When the specifications of the adjusting support 300 cannot meet the usage requirements, other specifications of the adjusting support 300 can be replaced to increase the range of adjustment of the outer diameter.

[0033] In some preferred embodiments, both the fixed support 200 and the adjusting support 300 are strip-shaped wooden strips with square cross-sections at both ends. When the first inclined surface 210 and the second inclined surface 310 are overlapped, the fixed support 200 and the adjusting support 300 are located in the groove 110 as square components. The support edge 320 is the edge of the side of the adjusting support 300 away from the fixed support 200. In actual use, the inner cylinder of the disc-shaped coil is fitted into the rotating shaft 100, and then the adjusting support 300 is inserted into the side opening 111 until the first inclined surface 210 and the second inclined surface 310 are completely overlapped. At this time, the adjusting support 300 supports the inner cylinder of the disc-shaped coil. Of course, in other embodiments, the fixed support 200 and the adjusting support 300 can be plate-shaped.

[0034] like Figure 3In one specific embodiment, the first inclined surface 210 has the same horizontal length as the fixed support 200, and the second inclined surface 310 has the same horizontal length as the adjusting support 300. The adjusting support 300 has the same length as the fixed support 200, and the maximum height of the fixed support 200 is less than the depth of the groove 110. In this embodiment, the fixed support 200 and the adjusting support 300 have trapezoidal cross-sections along their length, such that the first inclined surface 210 has the same horizontal length as the fixed support 200, and the second inclined surface 310 has the same horizontal length as the adjusting support 300. Since the adjusting support 300 has the same length as the fixed support 200, when the adjusting support 300 is inserted, the ends of the fixed support 200 and the adjusting support 300 are flush. The maximum height of the fixed support 200 is less than the depth of the groove 110, that is, the fixed support 200 will not protrude from the groove 110. Thus, the bottom of the adjusting support 300 is located in the groove 110, and the groove 110 limits the adjusting support 300 to prevent it from shifting.

[0035] like Figure 2 In one specific embodiment, the pivot portion 100 includes a plurality of spokes 120 and a plurality of profiles 130. The spokes 120 are spaced apart along the same axial direction and overlap in the same axial direction. The profiles 130 are distributed around the outer periphery of the spokes 120, and each profile 130 has a groove 110. In this embodiment, the pivot portion 100 formed by the plurality of spokes 120 and profiles 130 reduces the weight of the pivot portion 100, thereby reducing the drive load. Of course, in other embodiments, the pivot portion 100 can be a cylindrical shaft with a plurality of grooves 110 formed on its outer periphery. Specifically, as shown... Figure 2 and 3 In the embodiment shown, there are 3 spokes 120 and 12 profiles 130, which are arranged in a ring array around the outer periphery of the 3 spokes 120.

[0036] like Figure 4In the illustrated embodiment, a first threaded assembly 400 is provided between the profile 130 and the spoke 120. The first threaded assembly 400 includes a first bolt 410 and a first nut 420. The end face of the spoke 120 is provided with a connecting plate 121, which has a first through hole 122. The profile 130 has a second through hole 131. The fixed support 200 has a clearance hole 220. The first through hole 122, the second through hole 131, and the clearance hole 220 are correspondingly connected. The stud end of the first bolt 410 passes through the clearance hole 220, the second through hole 131, and the first through hole 122 and is threadedly connected to the first nut 420. The head of the first bolt 410 abuts against the profile 130. This threaded connection between the profile 130 and the spoke 120 allows the profile 130 and the spoke 120 to be disassembled into independent components when not in use or during transportation, reducing space occupation and facilitating storage and transportation. It is worth noting that the head of the first bolt 410 is located inside the clearance hole 220 and abuts against the profile 130, preventing the first bolt 410 from protruding from the first inclined surface 210 and obstructing the insertion of the adjusting support 300. More specifically, a shim may be provided between the connecting plate 121 and the profile 130 to fill the gap between the connecting plate 121 and the profile 130.

[0037] like Figure 4 In the illustrated embodiment, a second threaded assembly 500 is provided between the fixed support 200 and the profile 130. The second threaded assembly 500 includes a second bolt 510 and a second nut 520. The fixed support 200 has a stepped hole 230, and the profile 130 has a third through hole 132 communicating with the stepped hole 230. The stud end of the second bolt 510 passes through the stepped hole 230 and the third through hole 132 and is threadedly connected to the second nut 520. The head of the second bolt 510 is located inside the stepped hole 230 and abuts against the step of the stepped hole 230. This allows for a threaded connection between the profile 130 and the fixed support 200, facilitating replacement. It is worth noting that the head of the second bolt 510 is located inside the stepped hole 230 to prevent the second bolt 510 from protruding from the first inclined surface 210 and obstructing the insertion of the adjusting support 300.

[0038] Preferably, the spokes 120 located at both ends of the pivot 100 are provided with lifting lugs 123. This allows the hooks of the lifting equipment to hook onto the lifting lugs 123, thereby lifting and transferring the adjustable outer diameter winding mold.

[0039] Preferably, the spokes 120 have a plurality of annularly arranged light-reducing through holes 124. By providing light-reducing through holes 124 in the spokes 120, the weight of the shaft portion 100 is further reduced, thereby reducing the drive load. Specifically, as shown in... Figure 2In one specific embodiment shown, the number of light-reducing vias 124 is four, and the four light-reducing vias 124 are distributed in a ring array.

[0040] Preferably, the spoke 120 has a connecting through hole 125 at its center, and the connecting through hole 125 is square. In this embodiment, in the driving device that drives the rotating shaft 100 to rotate, the driving spindle of the driving device is square. The square driving spindle is inserted into the square connecting through hole 125, effectively preventing the driving spindle from rotating relative to the square connecting through hole 125.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. An adjustable outer diameter winding mold for a disc-shaped coil, characterized in that: include: The rotating shaft has several grooves on its side. The length direction of each groove is parallel to the axial direction of the rotating shaft, and the depth direction of each groove is set along the radial direction of the rotating shaft. The two ends of the groove in the length direction are respectively provided with side openings. A fixed support member is fixedly disposed in the groove, and the fixed support member has a first inclined surface forming a slope on the side away from the bottom of the groove; An adjusting support is provided, which is detachably inserted into and withdrawn from the groove through the side opening. The adjusting support is located above the fixed support. A second inclined surface is provided on the side of the adjusting support near the fixed support. The slope of the second inclined surface is the same as that of the first inclined surface. The first inclined surface abuts against the second inclined surface. A supporting edge protruding from the groove is provided on the side of the adjusting support away from the fixed support. The length direction of the supporting edge is parallel to the axial direction of the rotating shaft.

2. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 1, characterized in that: The first inclined surface has the same length in the horizontal direction as the fixed support, the second inclined surface has the same length in the horizontal direction as the adjusting support, the adjusting support has the same length as the fixed support, and the maximum height of the fixed support is less than the depth of the groove.

3. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 1, characterized in that: The rotating shaft includes several spokes and several profiles. The spokes are spaced apart along the same axial direction and overlap along the axial direction. The profiles are distributed around the outer periphery of the spokes and are provided with the grooves.

4. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 3, characterized in that: A first threaded assembly is provided between the profile and the spoke. The first threaded assembly includes a first bolt and a first nut. A connecting plate is provided on the end face of the spoke. The connecting plate has a first through hole. The profile has a second through hole. The fixed support has a clearance hole. The first through hole, the second through hole, and the clearance hole are correspondingly connected. The stud end of the first bolt passes through the clearance hole, the second through hole, and the first through hole and is threadedly connected to the first nut. The head of the first bolt abuts against the profile.

5. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 3, characterized in that: A second threaded assembly is provided between the fixed support and the profile. The second threaded assembly includes a second bolt and a second nut. The fixed support has a stepped hole, and the profile has a third through hole that communicates with the stepped hole. The stud end of the second bolt passes through the stepped hole and the third through hole and is threadedly connected to the second nut. The head of the second bolt is located in the stepped hole and abuts against the step of the stepped hole.

6. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 3, characterized in that: The spokes located at both ends of the pivot are equipped with lugs.

7. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 3, characterized in that: The spokes have several ring-shaped arrays of lightening through holes.

8. The adjustable outer diameter winding mold for a disc-shaped coil according to claim 3, characterized in that: The spoke plate has a connecting through hole at its center, and the connecting through hole is square.

Images