Winding and press fitting split type die assembly

Abstract

The utility model provides a split winding and press-fitting die assembly, relates to the technical field of coil production, and solves the technical problems that a die is responsible for winding and press-fitting of a coil at the same time, so that the production efficiency of a high-voltage coil is low, and the production period of a transformer is long. The winding and press-fitting split type mold assembly comprises a winding mold and a press-fitting mold, the winding mold and the press-fitting mold are of a split type structure, the winding mold is used for winding a coil, the press-fitting mold comprises a first bearing plate, a second bearing plate and a connecting part, the first bearing plate and the second bearing plate are fixedly connected through the connecting part, and when the press-fitting mold is inserted into the coil, the first bearing plate and the second bearing plate are fixedly connected through the connecting part. And the first bearing plate and the second bearing plate support the linear sections on the two sides of the coil correspondingly, so that the coil can be conveniently pressed by the pressing equipment. According to the winding and press-fitting split type mold assembly, the turnover rate of the winding mold is increased, the press-fitting mold is pressed and dried, the product quality is guaranteed, meanwhile, the production efficiency is improved, the production period is directly shortened, and the delivery timeliness rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of coil production, in particular to a split die assembly for winding and pressing. Background Art

[0002] Molds are extremely important in the production process. Good molds can reduce the rejection rate of products and improve product quality; at the same time, they can also shorten the production time and improve production efficiency.

[0003] The winding mold in the prior art is of an integral structure, and the winding mold is responsible for both the winding and pressing of the coil. Specifically, refer to Figure 1 and Figure 2 as shown Figure 1 which is a schematic structural diagram of one kind of coil in the prior art; Figure 2 which is a schematic structural diagram of another kind of coil in the prior art; On the one hand, after the low-voltage coil is wound in the mold in the prior art, the coil is prone to warping at the straight plate section of the mold. Therefore, the mold and the coil must first be pressed to a suitable size through a pressing table and then enter a drying furnace for 4 hours. After the coil cools to a certain temperature, the high-voltage coil is wound. After the high-voltage coil is wound, it needs to be pressed, dried and shaped for another 4 hours before the mold can be removed to wind the next coil. Due to the large number of distribution transformers and the urgent delivery period, shortening the production cycle is particularly important. On the other hand, when the mold coil is wound, it rotates with the rotating shaft of the winding machine and is subjected to rotating forces in all directions. In addition, when pressing with the mold, the long axis direction of the mold is subjected to the pressure of the press, and the arc section will also undergo a small deformation due to the transmitted force extrusion. After long-term use, natural wear will occur, resulting in out-of-tolerance dimensions and no longer meeting the production use.

[0004] Therefore, the mold in the prior art is responsible for both the winding and pressing of the coil, resulting in low production efficiency of high-voltage coils and a long production cycle of transformers. Content of the Utility Model

[0005] The purpose of the utility model is to provide a split die assembly for winding and pressing to solve the technical problem in the prior art that the mold is responsible for both the winding and pressing of the coil, resulting in low production efficiency of high-voltage coils and a long production cycle of transformers; the many technical effects that can be produced by the preferred technical solution among the many technical solutions provided by the utility model are described in detail below.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] The split die assembly for winding and pressing provided by the utility model includes a winding mold and a pressing mold, wherein:

[0008] The winding die and the press-fitting die are of a split structure. The winding die is used for winding coils. The press-fitting die includes a first bearing plate, a second bearing plate and a connecting part, where:

[0009] The connecting part fixedly connects the first bearing plate and the second bearing plate. When the press-fitting die is inserted into the coil, the first bearing plate and the second bearing plate respectively support the two straight-line segments on both sides of the coil, so as to facilitate the press-fitting equipment to press-fit the coil.

[0010] Preferably, the first bearing plate and the second bearing plate are arranged in parallel. The connecting part includes a connecting plate, and the connecting plate is perpendicular to both the first bearing plate and the second bearing plate.

[0011] Preferably, the number of the connecting plates is more than two. All the connecting plates are parallel to each other, and all the connecting plates are arranged at intervals along the length direction of the press-fitting die.

[0012] Preferably, the winding die includes a surrounding plate and a connecting plate, where:

[0013] A groove is provided on the surrounding plate for placing the conductive busbar. The inner wall of the surrounding plate is fixedly connected to the outer edge of the connecting plate and surrounds the connecting plate in a 360° direction. The surrounding plate includes a straight plate section and an arc section. There are two arc sections located on opposite sides of the straight plate section, and two straight plate sections are fixedly connected to both sides of each arc section.

[0014] Preferably, the widths of the first bearing plate and the second bearing plate are equal or unequal, and the width of the first bearing plate and / or the second bearing plate is greater than the width of the straight plate section.

[0015] Preferably, a limiting opening is formed in the middle of the winding die for the rotating shaft of the winding machine to pass through.

[0016] Preferably, a positioning plate is fixedly arranged outside the limiting opening. The positioning plate is in a square frame structure and is used for positioning the rotating shaft of the winding machine.

[0017] Preferably, the winding die includes a first winding part and a second winding part, where:

[0018] Both the first winding part and the second winding part have a narrow end and a wide end. The radial cross-sections of the first winding part and the second winding part gradually decrease along the direction from the narrow end to the wide end;

[0019] Among the first winding part and the second winding part, the wide end of one of them is fixedly connected to the narrow end of the other.

[0020] Preferably, the winding die further includes a fixing plate, which is attached to the outermost connecting plate and fixedly connects the first winding part and the second winding part.

[0021] Preferably, the number of the connecting plates is more than two, and all the connecting plates are arranged at intervals along the length direction of the winding die;

[0022] The winding die further includes a reinforcing plate, which passes through all the connecting plates and fixedly connects all the connecting plates.

[0023] Compared with the prior art, the winding and pressing split die assembly provided by the present invention has the following beneficial effects: The pressing die and the winding die are of a split structure. The winding die is only applicable to the winding process, eliminating the pressing loss and improving the service life of the die; The pressing die is used in the pressing process. The pressing die is inserted into the coil, and the first bearing plate and the second bearing plate respectively support the two straight line segments on both sides of the coil, so as to facilitate the pressing equipment to press the coil. It has high mechanical strength, only receives the pressure in the long axis direction, and is more stable and durable.

[0024] This winding and pressing split die assembly improves the turnover rate of the winding die. The pressing die is used for pressing and drying with the die, which ensures the product quality while accelerating the production efficiency, directly reduces the production cycle, and improves the on-time delivery rate. The shape and volume of the pressing die are small, reducing the floor area of the die and the site management cost. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of one of the coils in the prior art;

[0027] Figure 2 is a schematic structural diagram of another coil in the prior art;

[0028] Figure 3 is a three-dimensional structural diagram of the winding die;

[0029] Figure 4 is a top view of the winding die;

[0030] Figure 5 is a three-dimensional structural diagram of the pressing die;

[0031] Figure 6It is a top view of the press-fitting mold;

[0032] Figure 7 It is a side view of the press-fitting mold;

[0033] Figure 8 It is a schematic diagram of the internal structure of the winding mold.

[0034] In the figure, 1 is the winding mold; 11 is the enclosure; 111 is the straight plate section; 112 is the arc section; 113 is the groove; 12 is the connecting plate; 13 is the reinforcing plate; 14 is the first winding part; 15 is the second winding part; 16 is the positioning plate; 17 is the limiting opening; 18 is the fixing plate; 2 is the press-fitting mold; 21 is the first bearing plate; 22 is the second bearing plate; 23 is the connecting part. Specific embodiments

[0035] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope protected by the present utility model.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] The embodiment of the present utility model provides a winding and press-fitting split mold assembly. The press-fitting mold and the winding mold are of a split structure, which ensures the product quality while improving the production efficiency.

[0039] The following will combine with Figures 3 - 8 to elaborate more details on the technical solution provided by the present utility model.

[0040] Embodiment 1:

[0041] The winding and press-fitting split-type mold assembly provided by the present utility model includes a winding mold 1 and a press-fitting mold 2. Among them: the winding mold 1 and the press-fitting mold 2 are of a split structure. Refer to Figure 3 as shown, the winding mold 1 is used for winding coils. Refer to Figures 5 - 7 as shown, the press-fitting mold 2 includes a first bearing plate 21, a second bearing plate 22 and a connecting part 23. Among them: the connecting part 23 fixedly connects the first bearing plate 21 and the second bearing plate 22. When the press-fitting mold 2 is inserted into the coil, the first bearing plate 21 and the second bearing plate 22 respectively support the two straight-line segments on both sides of the coil, so as to facilitate the press-fitting equipment to press-fit the coil.

[0042] The winding and press-fitting split-type mold assembly of this embodiment has the following beneficial effects: the press-fitting mold 2 and the winding mold 1 are of a split structure. The winding mold 1 is only applicable to the winding process, eliminating the press-fitting loss and improving the service life of the mold; the press-fitting mold 2 is used in the press-fitting process. When the press-fitting mold 2 is inserted into the coil, the first bearing plate 21 and the second bearing plate 22 respectively support the two straight-line segments on both sides of the coil, so as to facilitate the press-fitting equipment to press-fit the coil. It has high mechanical strength and only receives the pressure in the long-axis direction, being more stable and durable.

[0043] This winding and press-fitting split-type mold assembly improves the turnover rate of the winding mold 1. The press-fitting mold 2 is press-fitted and dried with the mold, ensuring the product quality while accelerating the production efficiency, directly reducing the production cycle and improving the on-time delivery rate. The shape and volume of the press-fitting mold 2 are small, reducing the floor area of the mold and lowering the site management cost.

[0044] As an optional implementation method, refer to Figures 5 - 7 as shown, the first bearing plate 21 and the second bearing plate 22 are arranged in parallel. The connecting part 23 includes a connecting plate 12, and the connecting plate 12 is perpendicular to both the first bearing plate 21 and the second bearing plate 22.

[0045] The first bearing plate 21 and the second bearing plate 22 are used to support the straight-line segments of the coil and bear the pressure of the press-fitting machine, so as to facilitate the press-fitting of the low-voltage coil and further form a high-voltage coil.

[0046] As an optional implementation method, refer to Figures 5 - 7 as shown, the number of the connecting plates 12 is more than two. All the connecting plates 12 are parallel to each other, and all the connecting plates 12 are arranged at intervals along the length direction of the press-fitting mold 2.

[0047] The above structure can ensure the stable connection between the first bearing plate 21 and the second bearing plate 22, improve the structural strength of the pressing die 2, and is convenient for reducing the self-weight and inserting the pressing die 2 into the coil.

[0048] As an optional implementation manner, refer to Figure 3 and Figure 8 As shown, the winding die 1 includes a surrounding plate 11 and a connecting plate 12, wherein: a groove 113 is provided on the surrounding plate 11 for placing a conductive bus bar to fix the copper bar and enable the coil to be wound smoothly; the coil is wound around the surrounding plate 11, and the inner wall of the surrounding plate 11 is fixedly connected to the outer edge of the connecting plate 12 and surrounds the connecting plate 12 in a 360° direction. Refer to Figure 8 As shown, the surrounding plate 11 is surrounded and fixed outside all the connecting plates 12.

[0049] Refer to Figure 4 As shown, the surrounding plate 11 includes a straight plate section 111 and an arc section 112. There are two arc sections 112 located on opposite sides of the straight plate section 111, and two straight plate sections 111 are fixedly connected to both sides of each arc section 112.

[0050] When the coil is wound around the surrounding plate 11, the shape of the coil matches the outer contour of the surrounding plate 11. As shown in Figure 1 , Figure 2 and Figure 3 As shown, the surrounding plate 11 with the above structure can form the established shape of the inner coil of the transformer.

[0051] As an optional implementation manner, the widths of the first bearing plate 21 and the second bearing plate 22 are equal or unequal. Refer to Figures 5 - 7 As shown, in this embodiment, the widths of the first bearing plate 21 and the second bearing plate 22 are the same. As shown in Figure 4 and Figure 7 As shown, the widths of the first bearing plate 21 and the second bearing plate 22 are greater than the width of the straight plate section 111.

[0052] The widths of the first bearing plate 21 and the second bearing plate 22 are greater than the width of the straight plate section 111 to provide sufficient support for the coil.

[0053] Refer to Figures 5 - 7 As shown, the end corners of the first bearing plate 21 and the second bearing plate 22 are of a rounded corner structure to prevent damage to the insulation of the coil. During use, the pressing die 2 is inserted into the removed coil along the center. The end corners of the first bearing plate 21 and the second bearing plate 22 are of a rounded corner structure, which is convenient for operation.

[0054] As an optional implementation manner, refer to Figure 3 As shown, a limiting port 17 through which the rotating shaft of the winding machine passes is formed in the middle of the winding die 1. The limiting port 17 extends along the axis direction of the winding die 1 and penetrates both ends of the winding die 1.

[0055] When winding the coil, the rotating shaft of the winding machine passes through the limiting port 17, and the rotating shaft of the winding machine drives the winding die 1 to rotate, so as to wind the wire on the surrounding plate 11.

[0056] As an alternative embodiment, refer to Figure 3 As shown, a positioning plate 16 is fixedly arranged on the outer side of the limiting port 17. The positioning plate 16 is in a square frame structure and is used to position the rotating shaft of the winding machine. The positioning plate 16 is used to hold the rotating shaft of the winding machine tightly, so that the rotating shaft of the winding machine drives the winding die 1 to rotate.

[0057] As an alternative embodiment, refer to Figure 3 As shown, the winding die 1 includes a first winding part 14 and a second winding part 15, where: both the first winding part 14 and the second winding part 15 have a narrow end and a wide end, and the radial cross-sections of the first winding part 14 and the second winding part 15 gradually decrease along the direction from the narrow end to the wide end; among the first winding part 14 and the second winding part 15, the wide end of one of them is fixedly connected to the narrow end of the other.

[0058] Specifically, the first winding part 14 and the second winding part 15 of this embodiment are in a centrosymmetric structure. When demolding the coil, the wide ends of the first winding part 14 and the second winding part 15 first separate from the coil, and the narrow ends of both are the ends that separate from the coil later. In this way, the first winding part 14 and the second winding part 15 separate from the coil in opposite directions respectively, and the above structure facilitates the demolding of the coil.

[0059] As an alternative embodiment, refer to Figure 3 As shown, the winding die 1 further includes a fixing plate 18. The fixing plate 18 is attached to the outermost connecting plate 12 and fixedly connects the first winding part 14 and the second winding part 15.

[0060] The above fixing plate 18 is in an L-shaped structure. The locking piece passes through the fixing plate 18 and fixedly connects the first winding part 14 and the second winding part 15. The locking piece can be a screw or the like. When demolding the coil, the locking piece can be disassembled, and the first winding part 14 and the second winding part 15 are disassembled to facilitate the demolding of the coil.

[0061] As an alternative embodiment, refer to Figure 8 As shown, in the winding die 1, the number of connecting plates 12 is more than two, and all the connecting plates 12 are arranged at intervals along the length direction of the winding die 1; the winding die 1 further includes a reinforcing plate 13. The reinforcing plate 13 passes through all the connecting plates 12 and fixedly connects all the connecting plates 12.

[0062] The structures of the above-mentioned connecting plate 12 and reinforcing plate 13 constitute the framework of the winding die 1. The whole can be welded by steel plates, which improves the structural strength of the winding die 1 and can reduce the self-weight of the winding die 1, facilitating the winding and transportation of the winding die 1.

[0063] For the winding and press-fitting split die assembly of this embodiment, the split winding die 1 and press-fitting die 2 are used, which improves the turnover rate of the winding die 1. The press-fitting die 2 performs press-fitting and drying with the die, ensuring product quality while accelerating production efficiency, directly reducing the production cycle and improving the on-time delivery rate. At the same time, due to the small shape and volume of the press-fitting die 2, the floor area of the die is reduced, and the site management cost is lowered.

[0064] In the description of this specification, specific features, structures or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0065] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A winding and pressing split die assembly, characterized in that, It includes a winding die and a press-fitting die, where: The winding die and the press-fitting die are of a split structure. The winding die is used for winding coils. The press-fitting die includes a first bearing plate, a second bearing plate and a connecting part, where: The connecting part fixedly connects the first bearing plate and the second bearing plate. When the press-fitting die is inserted into the coil, the first bearing plate and the second bearing plate respectively support the two straight line segments on both sides of the coil, so as to facilitate the press-fitting equipment to press-fit the coil.

2. The winding and pressing split die assembly according to claim 1, wherein The first bearing plate and the second bearing plate are arranged in parallel. The connecting part includes a connecting plate, and the connecting plate is perpendicular to both the first bearing plate and the second bearing plate.

3. The winding and pressing split die assembly according to claim 2, wherein, The number of the connecting plates is more than two. All the connecting plates are parallel to each other, and all the connecting plates are arranged at intervals along the length direction of the press-fitting die.

4. The winding and pressing split die assembly according to claim 1, wherein The winding die includes a surrounding plate and a connecting plate, where: A groove is provided on the surrounding plate for placing the conductive busbar. The inner wall of the surrounding plate is fixedly connected to the outer edge of the connecting plate and surrounds the connecting plate in a 360° direction. The surrounding plate includes a straight plate section and an arc section. There are two arc sections located on the opposite sides of the straight plate section, and two straight plate sections are fixedly connected to both sides of each arc section.

5. The winding and press-fitting split mold assembly according to claim 4, characterized in that, The widths of the first bearing plate and the second bearing plate are equal or unequal, and the width of the first bearing plate and / or the second bearing plate is greater than the width of the straight plate section.

6. The wire winding and press-fitting split mold assembly according to claim 4, wherein A limiting opening for the rotating shaft of the winding machine to pass through is formed in the middle of the winding die.

7. The winding and pressing split die assembly according to claim 6, characterized in that, A positioning plate is fixedly arranged outside the limiting opening. The positioning plate is of a square frame structure and is used for positioning the rotating shaft of the winding machine.

8. The winding and pressing split die assembly according to claim 6, wherein The winding die includes a first winding part and a second winding part, where: Both the first winding part and the second winding part have a narrow end and a wide end. The radial cross-sections of the first winding part and the second winding part gradually decrease along the direction from the narrow end to the wide end. Among the first winding part and the second winding part, the wide end of one of them is fixedly connected to the narrow end of the other.

9. The split die assembly for winding and pressing according to claim 8, characterized in that, The winding die further includes a fixing plate, and the fixing plate is attached to the outermost connecting plate and fixedly connects the first winding part and the second winding part.

10. The winding and pressing split die assembly according to claim 4, wherein The number of the connecting plates is more than two, and all the connecting plates are arranged at intervals along the length direction of the winding die. The winding die further includes a reinforcing plate, and the reinforcing plate passes through all the connecting plates and fixedly connects all the connecting plates.

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