A production device of a power composite insulator

Abstract

A kind of production equipment of electric composite insulator, including core disc, the upper surface of the core disc is equipped with umbrella head, the upper surface of the umbrella head is equipped with gap, the middle part of the inner arc surface of the core disc near gap is equipped with elastic pressing surface, the lower surface edge of the elastic pressing surface is equipped with protruding part, and the umbrella head and elastic pressing surface are equipped with embedding groove;Through multiple positioning structure, the precise cooperation of each component is realized, the concave-convex cooperation formed by the positioning groove of the insulator cavity of basin type and the protruding part of elastic pressing surface, combined with the rigid constraint of bearing edge by positioning pin passing through positioning hole, the alignment accuracy of the forming pressure cavity of core disc and the insulator cavity of basin type is effectively avoided, the dimensional error of insulator caused by assembly deviation is effectively avoided, the structural consistency of product is improved, and reliable guarantee is provided for electrical performance and mechanical performance of insulator.

Description

Technical Field

[0001] This utility model belongs to the field of power production equipment technology, specifically relating to a production equipment for power composite insulators. Background Technology

[0002] With the rapid development of global power construction and electrified railway construction, the demand for insulators is constantly increasing. Due to their excellent performance, organic composite insulators account for more than 50% of the insulator application market. The market has an urgent need for high-performance and stable-quality organic composite insulators, which prompts companies to continuously improve their production equipment in order to improve product quality and production efficiency.

[0003] As my country's power transmission lines gradually extend to harsh climate regions with high altitudes, large temperature differences, and icing, traditional porcelain, glass, and silicone rubber insulators are prone to aging under extreme conditions, resulting in high maintenance costs. Therefore, it is necessary to develop insulators made of new materials, such as a new generation of insulators using epoxy resin-based composite materials. At the same time, corresponding production equipment is also needed to realize their industrial production.

[0004] Therefore, this utility model provides a production equipment for composite electrical insulators. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a production equipment for electrical composite insulators.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a production equipment for power composite insulators, including a core disk, an umbrella-shaped head on the upper surface of the core disk, a notch on the upper surface of the umbrella-shaped head, an elastic pressing surface near the middle of the inner arc surface of the core disk near the notch, a protrusion at the lower edge of the elastic pressing surface, a groove between the umbrella-shaped head and the elastic pressing surface, a basin-shaped upper mold body fitted into the groove between the umbrella-shaped head and the elastic pressing surface, a folded edge on the upper surface of the basin-shaped upper mold body, the upper surface of the folded edge being placed on the top of the notch, an arched support plate fitted onto the top of the upper surface of the basin-shaped upper mold body, a skirt at the bottom of the outer arc surface of the arched support plate, a threaded hole on one side of the skirt surface of the arched support plate, and the arched support plate being fixedly connected to the core disk through the threaded hole at the top of the skirt.

[0007] In some embodiments, the bottom of the inner arc surface of the core disk is provided with a forming pressure cavity, and the outer arc surface of the core disk near the forming pressure cavity is provided with a bearing edge, and the lower surface of the bearing edge is fitted and connected to a basin-shaped lower mold body.

[0008] In some embodiments, a basin-shaped insulator cavity is provided in the middle of the upper surface of the basin-shaped lower mold body, the outer arc surface of the basin-shaped insulator cavity has a conical structure, and the top of the basin-shaped insulator cavity is placed in the forming pressure cavity on the lower surface of the core disk.

[0009] In some embodiments, a positioning hole is provided on the upper surface of the basin-shaped lower mold body, and the upper surface of the positioning hole is in the same vertical plane as the bearing edge. A sealing ring is provided at the bottom of the outer arc surface of the basin-shaped insulator cavity.

[0010] In some embodiments, the upper surface of the basin-shaped insulator cavity is provided with a positioning groove in the middle, the inner bottom wall of the positioning groove is adapted to engage with the protrusion on the lower surface of the elastic pressing surface, and the middle of the basin-shaped lower mold body is provided with a concave surface.

[0011] In some embodiments, the basin-shaped insulator cavity is placed in the concave surface of the basin-shaped lower mold body, and the lower surface of the core disk is placed on top of the basin-shaped insulator cavity and is in a vertical plane.

[0012] In some embodiments, the outer arc surface of the bearing edge is attached to the inner sidewall of the concave surface of the basin-shaped lower mold body, the lower surface of the bearing edge abuts against the top of the sealing ring, and an annular air channel is provided on the inner arc surface of the basin-shaped lower mold body near the sealing ring.

[0013] In some embodiments, the annular air channel is provided with an exhaust hole A on the side near the concave surface, and the exhaust hole A is adapted to the cavity in the basin-shaped lower mold body.

[0014] In some embodiments, the annular air channel has an air inlet B near the lower surface of the basin-shaped lower mold body, and the air inlet B is placed on the bottom surface of the basin-shaped insulator cavity.

[0015] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. Through a multi-positioning structure, precise matching of each component is achieved. The positioning groove of the basin-shaped insulator cavity and the protrusion of the elastic pressing surface form a concave-convex fit. Combined with the rigid constraint of the positioning pin passing through the positioning hole and the bearing edge, the alignment accuracy of the core disk forming cavity and the basin-shaped insulator cavity is improved. This effectively avoids the insulator size error caused by assembly deviation, improves the structural consistency of the product, and provides a reliable guarantee for the electrical and mechanical performance of the insulator.

[0018] 2. By using an annular air channel in conjunction with exhaust hole A, air inside the cavity can be quickly discharged during the pressing of the core disk. The exhaust time is controlled within a short period of time, and no air bubbles remain after testing. This fundamentally solves the problem of air bubbles inside the insulator caused by air residue in traditional equipment, reduces the risk of the product's insulation performance being affected, and improves the product qualification rate.

[0019] 3. Air is introduced through air inlet B to form an air film. The air pressure assists in making the demolding process smooth and efficient. Operators can easily remove the molded insulators. Compared with traditional demolding methods, this not only reduces product damage caused by forced demolding, but also shortens the demolding time per demolding, thus improving overall production efficiency and making it suitable for large-scale mass production. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the core disk of this utility model;

[0021] Figure 2 This is an exploded view of the top structure of the basin-shaped upper mold body of this utility model;

[0022] Figure 3 This is a cross-sectional view of the interior of the core disk in this utility model;

[0023] Figure 4 This is a structural diagram showing the disassembled upper and lower mold bodies of the basin in this utility model;

[0024] Figure 5 This is a partial cross-sectional structural diagram of the core disk in this utility model;

[0025] Figure 6 This is a schematic diagram of the overall planar section structure of this utility model;

[0026] Figure 7 This is a partial cross-sectional structural diagram of the cavity of the basin-shaped insulator in this utility model;

[0027] Among them: 1. Core plate; 101. Umbrella-shaped head; 102. Elastic pressing surface; 103. Protrusion; 104. Forming cavity; 105. Bearing edge; 2. Basin-shaped upper mold body; 201. Folded edge; 3. Arched support plate; 301. Threaded hole; 4. Basin-shaped lower mold body; 401. Positioning hole; 402. Annular air channel; 5. Basin-shaped insulator cavity; 501. Positioning groove; 6. Sealing ring; 7. Exhaust hole A; 8. Air inlet hole B. Detailed Implementation

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, the production equipment for the power composite insulator in this embodiment includes a core disk 1. The upper surface of the core disk 1 is provided with an umbrella-shaped head 101. The upper surface of the umbrella-shaped head 101 is provided with a notch. The inner arc surface of the core disk 1 is provided with an elastic pressing surface 102 near the notch. The lower edge of the elastic pressing surface 102 is provided with a protrusion 103. A groove is provided between the umbrella-shaped head 101 and the elastic pressing surface 102. A basin-shaped upper mold body 2 is sleeved in the groove between the umbrella-shaped head 101 and the elastic pressing surface 102. The upper surface of the basin-shaped upper mold body 2 is provided with a folded edge 201. The upper surface of the folded edge 201 is placed on the top of the notch. An arched support plate 3 is sleeved on the top of the upper surface of the basin-shaped upper mold body 2. The bottom of the outer arc surface of the arched support plate 3 is provided with a skirt. A threaded hole 301 is provided on one side of the skirt surface of the arched support plate 3. The arched support plate 3 is fixedly connected to the core disk 1 through the threaded hole 301 at the top of the skirt.

[0029] As the core load-bearing and positioning component of the entire power composite insulator production equipment, the core disk 1 provides a stable assembly foundation for all components. Through cooperation with components such as the upper mold body 2, the arched support plate 3, and the lower mold body 4, it jointly constructs the closed space required for insulator molding. During the molding process, the core disk 1 can withstand the molding pressure, ensuring the relative position of each component is stable and providing reliable rigid support for the molding of the insulator. At the same time, its own structural design guides the gas to escape and assists in demolding, effectively ensuring the molding quality.

[0030] The notch in the umbrella-shaped head 101 on the upper surface of the core disk 1 provides a space for the folded edge 201 of the basin-shaped upper mold body 2, achieving the initial axial positioning of the basin-shaped upper mold body 2. The umbrella-shaped head 101 and the elastic pressing surface 102 cooperate to form a groove, which radially constrains the basin-shaped upper mold body 2 and prevents it from shifting horizontally during assembly and operation, laying a solid foundation for the subsequent fixing of the arched support plate 3, thereby ensuring the structural stability of the upper mold part. Among them, during assembly, the protrusion 103 on the lower surface edge of the elastic pressing surface 102 engages with the positioning groove 501 of the basin-shaped insulator cavity 5, using the pre-tightening force generated by its own elasticity to press the basin-shaped insulator cavity 5 upward, realizing the basin-shaped insulator cavity 5. The insulator cavity 5 is initially fixed to the core disk 1. The protrusion 103 is an arc-shaped structure that matches the positioning groove 501 to form a concave-convex fit structure. This can limit the horizontal displacement of the basin-shaped insulator cavity 5, ensuring that it is aligned with the forming pressure cavity 104 of the core disk 1. This avoids errors in the insulator forming size due to positioning deviations. At the same time, under the elastic action of the elastic pressing surface 102, the protrusion 103 and the positioning groove 501 fit tightly together, enhancing the stability of the overall structure. During the forming process, when pressure changes occur inside the cavity, the elastic pressing surface 102 can produce moderate deformation to buffer the pressure impact and prevent damage to the components due to rigid contact. At the same time, it maintains a stable pressure on the basin-shaped insulator cavity 5.

[0031] The forming cavity 104 at the bottom of the inner arc surface of the core disk 1 matches the top structure of the insulator and cooperates with the top of the basin-shaped insulator cavity 5 to form a complete insulator forming space. During the forming process, after the raw material is injected into this space, the forming cavity 104, as the upper forming surface, together with the basin-shaped insulator cavity 5, restricts the flow of raw material and the forming shape, ensuring that the insulator can be formed according to the design size and structure. The lower surface is attached to the basin-shaped lower mold body 4, bearing the weight of the core disk 1 and the upper components. At the same time, the outer arc surface of the bearing edge 105 is attached to the inner side wall of the concave surface of the basin-shaped lower mold body 4, forming radial positioning and restricting the relative rotation between the core disk 1 and the basin-shaped lower mold body 4. In addition, the lower surface of the bearing edge 105 abuts against the top of the sealing ring 6, compressing the sealing ring 6 to cause it to deform, enhancing the sealing of the forming space and preventing raw material leakage and gas entry.

[0032] like Figure 3 and Figure 5 As shown, the inner arc surface of the core disk 1 is provided with a forming pressure cavity 104 at the bottom, and the outer arc surface of the core disk 1 near the forming pressure cavity 104 is provided with a bearing edge 105. The lower surface of the bearing edge 105 is attached to the basin-shaped lower mold body 4.

[0033] The basin-shaped upper mold 2 is fitted into the groove between the umbrella-shaped head 101 and the elastic pressing surface 102. Its shape is adapted to the umbrella skirt structure of the upper part of the insulator. As the forming mold of the upper part of the insulator, it achieves initial positioning through the cooperation of the folded edge 201 with the notch of the umbrella-shaped head 101. Under the fixing action of the arched support plate 3, it fits tightly with the core plate 1 to form a stable upper mold forming structure. The folded edge 201 is located on the upper surface of the basin-shaped upper mold 2 and is placed at the top of the notch of the umbrella-shaped head 101. On the one hand, it provides axial support for the basin-shaped upper mold 2 and determines its installation height on the core plate 1. On the other hand, the cooperation with the notch restricts the horizontal displacement of the basin-shaped upper mold 2 and prevents it from shifting during operation. At the same time, the folded edge 201 is clamped between the umbrella-shaped head 101 and the arched support plate 3, which enhances the installation stability of the basin-shaped upper mold 2. During the forming process, the basin-shaped upper mold 2 bears the pressure of the raw material to ensure the forming accuracy of the umbrella skirt structure of the upper part of the insulator. At the same time, it cooperates with other components to form a closed forming space.

[0034] An arched support plate 3 is fitted onto the top of the upper surface of the basin-shaped upper mold body 2. It is fixedly connected to the core plate 1 through the threaded hole 301 on the skirt and bolts. Its arched structure can disperse the pressure generated during fixing, so that the basin-shaped upper mold body 2 is evenly stressed, ensuring that the basin-shaped upper mold body 2 and the core plate 1 fit tightly together, avoiding gaps that could lead to material leakage. At the same time, the arched support plate 3 provides axial compression to the basin-shaped upper mold body 2, preventing it from shifting upwards under molding pressure, and ensuring the structural stability of the upper mold. The threaded hole 301 is opened on the skirt surface of the arched support plate 3, and works with bolts to achieve a detachable connection between the arched support plate 3 and the core plate 1. By tightening the bolts, the self-locking characteristic of the threads generates axial preload, firmly connecting the arched support plate 3, the basin-shaped upper mold body 2, and the core plate 1 together, ensuring that the components will not separate due to pressure during the molding process. The threaded connection method facilitates the disassembly and maintenance of the equipment, and different specifications of the basin-shaped upper mold body 2 can be replaced according to production needs.

[0035] like Figure 6 and Figure 7As shown, a positioning groove 501 is provided in the middle of the upper surface of the basin-shaped insulator cavity 5. The inner bottom wall of the positioning groove 501 is adapted to and engaged with the protrusion 103 on the lower surface of the elastic pressing surface 102. A concave surface is provided in the middle of the basin-shaped lower mold body 4. The basin-shaped insulator cavity 5 is placed in the concave surface of the basin-shaped lower mold body 4. The lower surface of the core disk 1 is placed on the top of the basin-shaped insulator cavity 5 and is in a vertical plane. The outer arc surface of the bearing edge 105 is attached to the basin-shaped lower mold body 4. On the inner sidewall of the concave surface of the mold body 4, the lower surface of the bearing edge 105 abuts against the top of the sealing ring 6. An annular air channel 402 is provided on the inner arc surface of the basin-shaped lower mold body 4 near the sealing ring 6. An exhaust hole A7 is provided on the side of the annular air channel 402 near the concave surface. The exhaust hole A7 is adapted to the cavity in the basin-shaped lower mold body 4. An air inlet hole B8 is provided on the lower surface of the annular air channel 402 near the lower surface of the basin-shaped lower mold body 4. The air inlet hole B8 is placed on the bottom surface of the basin-shaped insulator cavity 5.

[0036] The lower mold body 4 is designed in a basin shape, providing an installation platform for the basin-shaped insulator cavity 5. The concave surface in the middle fits the shape of the basin-shaped insulator cavity 5, ensuring the stability of the cavity during molding. At the same time, it cooperates with the bearing edge 105 of the core plate 1 to form a closed molding environment. When the core plate 1 is pressed down, it supports the pressure of the upper structure by fitting with the bearing edge 105. During the demolding stage when the core plate 1 is lifted, its structure provides a channel for air to enter, thus completing the demolding operation. A positioning hole 401 is provided on the upper surface of the lower mold body 4, and it is on the same vertical plane as the bearing edge 105. During assembly, the positioning pin passes through the positioning hole 401 and is inserted into the corresponding hole of the bearing edge 105, thereby limiting the relative displacement of the two in the horizontal direction. This ensures that the molding cavity 104 of the core plate 1 is completely aligned with the top of the basin-shaped insulator cavity 5, avoiding insulator molding size errors due to assembly deviations, and enhancing the structural stability of the equipment during stress.

[0037] The basin-shaped insulator cavity 5 is the direct space for forming the main body of the insulator. Its inner wall shape matches the structure of the insulator's skirts, core rods, etc. During the forming stage, it cooperates with the forming pressure cavity 104 of the core disk 1 to form a closed cavity, which restricts the flow and solidification of the raw materials. The conical structure of its outer arc surface fits with the concave surface of the basin-shaped lower mold 4 to ensure that it does not deform under pressure. In addition, the positioning groove 501 in the middle of the upper surface of the cavity forms a concave-convex fit with the protrusion 103 on the lower surface of the elastic pressing surface 102. On the one hand, the mechanical clamping restricts the horizontal movement of the cavity, ensuring that the cavity is precisely aligned with the forming pressure cavity 104 of the core disk 1. On the other hand, under the elastic pre-tightening force of the elastic pressing surface 102, the groove and the protrusion 103 fit tightly, enhancing the stability of the cavity under forming pressure and avoiding cavity displacement due to vibration or pressure fluctuation.

[0038] An annular air channel 402 is provided on the inner arc surface of the basin-shaped lower mold body 4 near the sealing ring 6. This is the core channel for air pressure regulation. Its annular structure ensures that the gas flows evenly around the cavity. During the pressing of the core plate 1, the air inside the cavity enters the annular air channel 402 through the exhaust hole A7 and is then discharged to the outside of the equipment through a preset path, avoiding the formation of air bubbles. When the core plate 1 is lifted, the external air enters the annular air channel 402 through the air inlet B8 and is then dispersed to the surrounding area of ​​the cavity, providing uniform air pressure assistance for demolding. Its annular design ensures the symmetry of gas flow and prevents local air pressure imbalance from affecting the molding or demolding effect.

[0039] The sealing ring 6 is located at the bottom of the outer arc surface of the cavity 5 of the basin-shaped insulator. It is made of high-temperature resistant elastic material and achieves sealing based on elastic deformation. When the core disk 1 is pressed down, the lower surface of the bearing edge 105 abuts against the top of the sealing ring 6, forcing the sealing ring 6 to undergo compression deformation, tightly filling the gap between the bearing edge 105 and the lower mold body 4 of the basin shape, preventing leakage of molding raw materials or uncontrolled entry of external air into the cavity. During the demolding stage, the elastic reset of the sealing ring 6 can help restore the state of the sealing surface, ensuring the sealing performance during the next molding, while reducing rigid friction between components and extending the service life of the equipment.

[0040] Meanwhile, the vent A7 connects the annular air channel 402 to the cavity of the lower mold body 4, serving as the path for venting internal air during the pressing of the core plate 1. When the core plate 1 is pressed down, the air inside the cavity is compressed and enters the annular air channel 402 through the vent A7, eventually being discharged outside the equipment. This prevents residual air from forming bubbles that could affect the insulation performance of the insulator. The vent diameter and distribution are designed to control the venting speed, ensuring that air is completely discharged during the material filling process, while preventing the material from overflowing due to excessive venting.

[0041] The air inlet B8 is located in the annular air channel 402 near the lower surface of the basin-shaped lower mold body 4, and corresponds to the bottom surface of the basin-shaped insulator cavity 5. Its function is to introduce external air to assist demolding when the core disk 1 is lifted. When the core disk 1 moves upward, a negative pressure is formed inside the cavity. Under the action of the air pressure difference, the external air enters the annular air channel 402 through the air inlet B8, and then diffuses to the gap between the cavity and the insulator through the exhaust hole A7, forming air pressure support, reducing the adhesion force between the insulator and the inner wall of the cavity, making the demolding process smoother, reducing the risk of product damage caused by forced demolding, and improving production efficiency.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A production equipment for composite electrical insulators, characterized in that: The device includes a core disk (1), the upper surface of which is provided with an umbrella-shaped head (101), the upper surface of which has a notch, and the inner arc surface of the core disk (1) near the notch has an elastic pressing surface (102) at the center, the lower surface edge of which has a protrusion (103), and a groove is provided between the umbrella-shaped head (101) and the elastic pressing surface (102). A basin-shaped upper mold body (2) is fitted inside the groove. The upper surface of the basin-shaped upper mold body (2) is provided with a folded edge (201). The upper surface of the folded edge (201) is placed on the top of the notch. An arched support plate (3) is fitted on the top of the upper surface of the basin-shaped upper mold body (2). The bottom of the outer arc surface of the arched support plate (3) is provided with a skirt. A threaded hole (301) is opened on one side of the skirt surface of the arched support plate (3). The arched support plate (3) is fixedly connected to the core plate (1) through the threaded hole (301) at the top of the skirt.

2. The production equipment for composite insulators for electrical applications according to claim 1, characterized in that: The inner arc surface of the core disk (1) is provided with a molding cavity (104) at the bottom. The outer arc surface of the core disk (1) near the molding cavity (104) is provided with a bearing edge (105). The lower surface of the bearing edge (105) is attached to a basin-shaped lower mold body (4).

3. The production equipment for composite insulators for electrical applications according to claim 2, characterized in that: The upper surface of the basin-shaped lower mold body (4) is provided with a basin-shaped insulator cavity (5). The outer arc surface of the basin-shaped insulator cavity (5) is conical. The top of the basin-shaped insulator cavity (5) is placed in the forming pressure cavity (104) on the lower surface of the core disk (1).

4. The production equipment for composite insulators for electrical applications according to claim 3, characterized in that: The upper surface of the basin-shaped lower mold body (4) is provided with a positioning hole (401). The upper surface of the positioning hole (401) and the bearing edge (105) are in the same vertical plane. The bottom of the outer arc surface of the basin-shaped insulator cavity (5) is provided with a sealing ring (6).

5. The production equipment for composite insulators for electrical applications according to claim 4, characterized in that: The upper surface of the basin-shaped insulator cavity (5) is provided with a positioning groove (501) in the middle. The inner bottom wall of the positioning groove (501) is adapted to and engaged with the protrusion (103) on the lower surface of the elastic pressing surface (102). The middle part of the basin-shaped lower mold body (4) is provided with a concave surface.

6. The production equipment for composite insulators for electrical applications according to claim 5, characterized in that: The basin-shaped insulator cavity (5) is placed in the concave surface of the basin-shaped lower mold body (4), and the lower surface of the core disk (1) is placed on the top of the basin-shaped insulator cavity (5) and is in the vertical plane.

7. The production equipment for composite insulators for electrical applications according to claim 6, characterized in that: The outer arc surface of the bearing edge (105) is attached to the inner side wall of the concave surface of the basin-shaped lower mold body (4), the lower surface of the bearing edge (105) abuts against the top of the sealing ring (6), and an annular air channel (402) is opened on the inner arc surface of the basin-shaped lower mold body (4) near the sealing ring (6).

8. The production equipment for electrical composite insulators according to claim 7, characterized in that: The annular air channel (402) has an exhaust hole A (7) on the side near the concave surface, and the exhaust hole A (7) is adapted to the cavity of the basin-shaped lower mold body (4).

9. The production equipment for electrical composite insulators according to claim 8, characterized in that: The annular air channel (402) has an air inlet B (8) on the lower surface of the basin-shaped lower mold body (4), and the air inlet B (8) is placed on the bottom surface of the basin-shaped insulator cavity (5).

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