Multi-section combined mold

Abstract

The utility model discloses a multi-section combined mould which comprises a positioning plate, a second long shaft supporting plate, an end plate, a first long shaft supporting plate and a connecting screw rod, a square hole I is formed in the center of the positioning plate, and four positioning holes I are formed in the outer sides of four opposite angles of the central square hole I of the positioning plate; four first threaded holes are formed in the outer side, along the horizontal line of the four first positioning holes, of the positioning plate, the first long-axis supporting plate and the second long-axis supporting plate are distributed and installed on the two sides of the positioning plate in the long-axis direction, and a platform is arranged at the semi-arc center position of the second long-axis supporting plate. A first long kidney-shaped hole and a second long kidney-shaped hole are formed in the two sides of the center line of the first long shaft supporting plate and the two sides of the center line of the second long shaft supporting plate in the long shaft direction, and the end plates are installed at the left end and the right end of the connecting screw correspondingly. The device is simple in structure, easy to machine, flexible in combination, good in universality, much lower in cost compared with a conventional mold, and especially suitable for batch production.

Description

Technical Field

[0001] This utility model relates to the field of immersion distribution transformer manufacturing technology, specifically a multi-segment combined mold. Background Technology

[0002] Distribution transformers are one of the important pieces of equipment in the power supply and distribution systems of industrial and mining enterprises and civil buildings. They reduce the 10(6)kV or 35kV network voltage to the 230 / 400V bus voltage used by users. These products are suitable for AC 50(60)Hz, with a maximum three-phase rated capacity of 2500kVA (the maximum single-phase rated capacity is 833kVA, and single-phase transformers are generally not recommended). They can be used indoors or outdoors. For capacities of 315kVA and below, they can be installed on poles. The ambient temperature should not exceed 40℃ and should not be lower than -25℃. The maximum daily average temperature should be 30℃ and the maximum annual average temperature should be 20℃. The relative humidity should not exceed 90% (at an ambient temperature of 25℃) and the altitude should not exceed 1000m. If the above usage conditions are not met, appropriate quota adjustments should be made in accordance with the relevant provisions of GB6450-86.

[0003] The existing production of immersed distribution transformers has the following defects:

[0004] Existing oil-immersed distribution transformers typically require separate winding on different equipment due to the different winding methods and materials used for high-voltage and low-voltage coils. That is, after the low-voltage winding is completed, the coil is then transferred to the high-voltage winding equipment. As a result, during mass production, a large number of molds are often required to meet the requirement of winding both high and low voltages simultaneously for the same specification. Furthermore, conventional molds are not universal and have high investment costs.

[0005] Therefore, a solution is needed. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the prior art, this utility model provides a multi-segment combined mold to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a multi-segment combined mold, comprising a positioning plate, a second long axis support plate, an end plate, a first long axis support plate, and a connecting screw. The positioning plate has a square hole at its center, and four positioning holes are located on the outer sides of the four opposite corners of the central square hole. The positioning plate also has four threaded holes located on the outer sides of the horizontal lines of the four positioning holes. The first and second long axis support plates are distributed and installed on both sides of the positioning plate along its long axis. One end of the first long axis support plate is semi-circular, and the other end is a rectangle tangent to the semi-circular arc. Similarly, one end of the second long axis support plate is semi-circular, and the other end is a rectangle tangent to the semi-circular arc. A platform is provided at the center of the semi-circular arc of the second long axis support plate. Both the first and second long axis support plates have rectangular notches one and two. Long waist holes one and two are provided on both sides of the center line of the first and second long axis support plates along the long axis direction. A set of end plates is provided, which are respectively installed on the left and right ends of the connecting screw. The end plates are oblong. The two ends of the end plates along the long axis direction have slots one and two, respectively. A matching square hole two is provided at the center of the end plate corresponding to the positioning plate. Four positioning holes two are provided on the outer side of the square hole two diagonally. Four round holes are provided on the outer side of the positioning holes two. Four threaded holes two are provided on the outer side of the round holes.

[0010] Preferably, the radius of the arc of the first long axis support plate and the second long axis support plate is increased or decreased in units of five millimeters.

[0011] Preferably, the positioning hole and the connecting screw are fixed in position to each other by a nut.

[0012] Preferably, the four positioning holes of the end plate are respectively matched with the four positioning holes on the positioning plate, and adjusting studs are respectively installed on the four threaded holes of the end plate.

[0013] (III) Beneficial Effects

[0014] This utility model provides a multi-segment combined mold. It has the following beneficial effects:

[0015] This solution features a multi-segment modular mold structure that is simple, easy to process, flexibly combinable, and highly versatile. Its cost is significantly lower than conventional molds, making it particularly suitable for mass production. The required inner diameter of the coil can be changed simply by altering the long-axis support plate. The long-axis support plate, as a single component, is simple to process, can be standardized, and is inexpensive, requiring no replacement of the entire mold, thus offering high cost-effectiveness. The long-axis support plate is adjustable along the long axis, meeting design requirements for minor adjustments based on specific needs without any replacements or additional investment. The end plate settings allow for axial margin adjustment according to coil winding requirements. After winding, the coil can be axially compressed to ensure it meets the designed axial height while maintaining a flat end plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the positioning plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the second long axis support plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the end plate of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the first long axis support plate of this utility model.

[0021] In the diagram, 1. Positioning plate; 1.1 Square hole one; 1.2 Positioning hole one; 1.3 Threaded hole one; 2. Second long shaft support plate; 2.1 Rectangular notch two; 2.2 Long slotted hole two; 2.3 Platform; 3. End plate; 3.1 Square hole two; 3.2 Positioning hole two; 3.3 Round hole; 3.4 Threaded hole two; 3.5 Groove one; 3.6 Groove two; 4. First long shaft support plate; 4.1 Long slotted hole one; 4.2 Rectangular notch one; 5. Connecting screw; 6. Adjusting stud. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution:

[0024] Example 1

[0025] Regarding the above-mentioned problem 1: Oil-immersed distribution transformers typically need to be wound separately on different equipment because the high and low voltage coils are wound using different methods and materials. That is, after the low voltage winding is completed, it is then transferred to the high voltage winding equipment. In mass production, a large number of molds are often required to meet the requirement of winding high and low voltages simultaneously for the same specification. Furthermore, conventional molds are not universal and the investment cost is high.

[0026] The solution is as follows: A multi-segment combined mold includes a positioning plate 1, a second long axis support plate 2, an end plate 3, a first long axis support plate 4, and a connecting screw 5. The positioning plate 1 has a square hole 1.1 at its center, and four positioning holes 1.2 are provided on the outer sides of the four diagonal corners of the central square hole 1.1. The positioning plate 1 has four threaded holes 1.3 on the outer side of the horizontal line of the four positioning holes 1.2. The first long axis support plate 4 and the second long axis support plate 2 are distributed and installed along the long axis direction of the positioning plate 1. On both sides, one end of the first long axis support plate 4 is a semi-circular arc, and the other end is a rectangle tangent to the arc. One end of the second long axis support plate 2 is a semi-circular arc, and the other end is a rectangle tangent to the arc. A platform 2.3 is provided at the center of the semi-circular arc of the second long axis support plate 2. Rectangular notch 1 4.2 and rectangular notch 2.1 are provided on both the first long axis support plate 4 and the second long axis support plate 2. Long waist holes 4 are provided on both sides of the center line of the first long axis support plate 4 and the second long axis support plate 2 along the long axis direction. 1. The end plate 3 has a long, narrow hole 2.2. A set of end plates 3 are respectively installed on the left and right ends of the connecting screw 5. The end plate 3 is oblong. At both ends of the long axis of the end plate 3, there are slots 3.5 and 3.6 respectively. A matching square hole 3.1 is opened at the center of the end plate 3 corresponding to the position of the positioning plate 1. Four positioning holes 3.2 are opened diagonally on the outer side of the square hole 3.1. Four round holes 3.3 are opened on the outer side of the positioning holes 3.2. Four screws are provided on the outer side of the round holes 3.3. The positioning plate 1, the first long axis support plate 4, and the second long axis support plate 2 are connected by bolts to form an assembly. At least two such assemblies can be installed as needed, arranged axially at certain intervals. They are fixed together by four positioning holes 1.2 and four connecting screws 5 on the positioning plate 1, forming a modular mold with certain intervals. End plates 3 are installed on the outer sides of both ends of the mold. The end plates 3 are used to adjust the coil winding allowance and axial height clamping via connecting screws 5 and adjusting studs 6. Different coil inner diameter requirements can be accommodated by replacing the first long axis support plate 4 and the second long axis support plate 2. The long axis dimension of the mold can be changed by adjusting the positions of the long waist holes 4.1 and 2.2 on the first and second long axis support plates 4 and 2 to adapt to changes in the long axis of the coil inner diameter.

[0027] The radius of the arc of the first long shaft support plate 4 and the second long shaft support plate 2 is increased or decreased in units of five millimeters to adjust the size of the mold radius. The size of the long shaft of the mold is adjusted by moving the long waist hole on the support plate. The first long shaft support plate 4 and the second long shaft support plate 2 can be made of steel plate to meet the requirements of long-term reliability, or they can be made of wood as a temporary short-term alternative.

[0028] The positioning hole 1.2 and the connecting screw 5 are fixed in position to each other by a nut, and the central square hole 1.1 of the positioning plate 1 cooperates with the mandrel of the winding device to realize the drive.

[0029] The four positioning holes 3.2 of the end plate 3 are respectively matched with the four positioning holes 1.2 on the positioning plate 1. Adjusting studs 6 are respectively installed on the four threaded holes 3.4 of the end plate 3. The adjusting studs 6 control the winding height of the coil. The slot 3.5 on the end plate 3 facilitates the lead-out of the low-voltage side of the coil, and the slot 3.6 on the end plate 3 facilitates the lead-out of the high-voltage side of the coil.

[0030] Working principle: During operation, the aforementioned positioning plate 1, first long axis support plate 4, and second long axis support plate 2 are connected by bolts to form an assembly. At least two such assemblies can be installed as needed, arranged axially at certain intervals. They are fixed together through four positioning holes 1.2 and four connecting screws 5 on the positioning plate 1, forming a modular mold with certain intervals. End plates 3 are installed on the outer sides of both ends of the mold. The end plates 3 are used to adjust the coil winding allowance and axial height clamping via connecting screws 5 and adjusting studs 6. The first long axis support plate 4 and the second long axis support plate 2 can be replaced to accommodate different coil inner diameter requirements. The long axis dimensions of the mold can be changed by adjusting the positions of the long waist holes 4.1 and 2.2 on the first and second long axis support plates 4 and 2 to adapt to changes in the long axis of the coil inner diameter.

[0031] The components of this utility model are: 1. Positioning plate; 1.1 Square hole one; 1.2 Positioning hole one; 1.3 Threaded hole one; 2. Second long shaft support plate; 2.1 Rectangular notch two; 2.2 Long slot two; 2.3 Platform; 3. End plate; 3.1 Square hole two; 3.2 Positioning hole two; 3.3 Round hole; 3.4 Threaded hole two; 3.5 Slot one; 3.6 Slot two; 4. First long shaft support plate; 4.1 Long slot one; 4.2 Rectangular notch one; 5. Connecting screw; 6. Adjusting stud. All components are general standard parts or parts known to those skilled in the art, and their structure and principle can be understood by those skilled in the art. According to technical manuals or conventional experimental methods, the problem solved by this utility model is that oil-immersed distribution transformers, due to the different winding methods and materials used for high and low voltage coils, usually need to be wound separately on different equipment. That is, after the low voltage winding is completed, it is then transferred to the high voltage winding equipment. In mass production, a large number of molds are often required to meet the requirement of winding high and low voltage simultaneously for the same specification. Moreover, conventional molds are not universal and have high investment costs. This utility model, through the combination of the above-mentioned components, can achieve a simple structure, easy processing, flexible combination, and good versatility. Its cost is much lower than that of conventional molds, making it especially suitable for mass production.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-segment combined mold, characterized in that: The system includes a positioning plate (1), a second long axis support plate (2), an end plate (3), a first long axis support plate (4), and a connecting screw (5). The positioning plate (1) has a square hole (1.1) at its center. Four positioning holes (1.2) are provided on the outer sides of the four diagonal corners of the square hole (1.1) at the center of the positioning plate (1). The positioning plate (1) has four threaded holes (1.3) on the outer side of the horizontal line of the four positioning holes (1.2). The first long axis support plate (4) and the second long axis support plate (2) are distributed and installed on both sides of the long axis of the positioning plate (1). One end of the first long axis support plate (4) is a semi-circular arc, and the other end is a rectangle tangent to the arc. One end of the second long axis support plate (2) is a semi-circular arc, and the other end is a rectangle tangent to the arc. A platform (2.3) is provided at the center of the semi-circular arc of the second long axis support plate (2). The first long axis support plate... (4) and the second long axis support plate (2) are both provided with rectangular notch one (4.2) and rectangular notch two (2.1). The center lines of the first long axis support plate (4) and the second long axis support plate (2) are provided with long waist hole one (4.1) and long waist hole two (2.2) along the long axis direction. The end plate (3) is provided with a set. The set of end plates (3) are respectively installed on the left and right ends of the connecting screw (5). The end plate (3) is oblong. The two ends of the long axis direction of the end plate (3) are respectively provided with slot one (3.5) and slot two (3.6). The center of the end plate (3) is provided with matching square hole two (3.1) corresponding to the position of the positioning plate (1). The square hole two (3.1) is provided with four positioning holes two (3.2) on the outer side of the diagonal. The positioning holes two (3.2) are provided with four round holes (3.3) on the outer side of the round holes (3.3). The round holes (3.3) are provided with four threaded holes two (3.4) on the outer side of the round holes (3.3).

2. The multi-segment combined mold according to claim 1, characterized in that: The radius of the arc of the first long axis support plate (4) and the second long axis support plate (2) is increased or decreased in units of five millimeters.

3. A multi-section modular mold according to claim 1, wherein: The positioning hole (1.2) and the connecting screw (5) are fixed in position to each other by a nut.

4. A multi-segment combined mold according to claim 1, characterized in that: The four positioning holes (3.2) of the end plate (3) are respectively matched with the four positioning holes (1.2) on the positioning plate (1), and the four threaded holes (3.4) of the end plate (3) are respectively equipped with adjusting studs (6).

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