A mold for producing a composite suspension insulator

Abstract

The utility model belongs to insulator production equipment technical field especially relates to a kind of mould for producing composite suspension insulator, it includes: mould, mould is used to carry out forming processing to suspension insulator;Mould further includes: first mould, first mould is made of two first half moulds, and first half mould is split face and is equipped with the first forming cavity for the first section of insulator forming;Second mould, second mould is made of two second half moulds, and second half mould is split face and is equipped with the second forming cavity for the second section of insulator forming and the accommodating cavity for accommodating first section insulator;Auxiliary cooling mechanism, auxiliary cooling mechanism is respectively set on the non-split face of first half mould and second half mould for assisting mould heat dissipation;Wherein, first half mould and second half mould respective split face are also equipped with injection molding channel, relative to prior art, the utility model effectively adapts the sectional forming of insulator and improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of insulator production equipment, and in particular relates to a mold for producing composite suspension insulators. Background Technology

[0002] Suspension insulators are generally made of insulating components (such as ceramic or glass components) and metal accessories (such as steel feet, iron caps, flanges, etc.) glued together or mechanically clamped together. They are processed by forming molds during the production process. Common suspension insulator molds usually include an upper mold and a lower mold. For example, a composite suspension insulator mold disclosed in patent application number CN203631214U has an upper mold consisting of a positioning sleeve fixed on an upper template and an upper mold body, and a lower mold consisting of a lower mold body fixed on a lower template. The lower mold body has a lower positioning sleeve coaxial with the positioning sleeve, and a buffer spring is installed in the mounting hole of the lower positioning sleeve. The key feature is that there is a movable mold body that can be opened and closed between the upper mold and the lower mold. The movable mold body, the iron cap that cooperates with the upper positioning sleeve, the steel foot that cooperates with the lower positioning sleeve, and the insulating core that is fixedly connected to the steel foot and the iron cap together form the mold cavity.

[0003] The existing molds for composite suspension insulators are ineffective in handling the production of segmented composite suspension insulators, and the molds lack effective auxiliary heat dissipation methods, resulting in low cooling efficiency of suspension insulators during molding, which reduces production efficiency. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a mold for producing composite suspension insulators, which effectively addresses the segmented molding production of composite suspension insulators and improves production efficiency.

[0005] In view of this, the present invention provides a mold for producing composite suspension insulators, comprising:

[0006] A mold, the mold being used for forming suspension insulators;

[0007] The mold also includes:

[0008] The first mold is composed of two first half molds, upper and lower, and the first half mold has a first forming cavity for forming the first section of the insulator on the splicing surface.

[0009] The second mold consists of two upper and lower second half molds. The mating surface of the second half mold has a second forming cavity for forming the second section of the insulator and a receiving cavity for accommodating the first section of the insulator.

[0010] An auxiliary cooling mechanism is provided on the non-joining surfaces of the first half-mold and the second half-mold to assist in heat dissipation of the mold.

[0011] The first half-mold and the second half-mold are respectively provided with injection channels on their splicing surfaces for conveying insulator molding raw materials into the corresponding first molding cavity and the second molding cavity.

[0012] In this technical solution, a first mold and a second mold are used for segmented molding, which effectively meets the production needs of segmented composite suspension insulators. During the first segment molding process, the structural design of the first molding cavity can accurately form each part of the first segment of the insulator, laying a good foundation for the connection with the second segment. During the second segment molding process, the receiving cavity can effectively place and position the first segment of the insulator, further facilitating the second segment molding. Compared with existing molds that cannot perform segmented molding, the segmented molding method of this utility model has greater flexibility and can produce composite suspension insulators of different lengths and structures according to different design requirements, expanding the applicability of the mold. At the same time, segmented molding also allows for adjustments to the raw material formula and process parameters during the two molding processes, optimizing the performance of the insulator to form a composite insulator and improving product quality.

[0013] In the above technical solution, the first molding cavity further includes:

[0014] The first main body forming part is used to form the shaft portion of the first segment of the insulator;

[0015] The first umbrella skirt forming part is used to form the umbrella skirt part of the first segment of the insulator;

[0016] A joint end forming part is provided at one end of the main body forming and located at the joint end of the first segment of the insulator;

[0017] The first umbrella skirt forming part has a plurality of parts that are evenly spaced along the length direction of the first main body forming part, and the diameter of the joint end forming part is smaller than that of the first umbrella skirt forming part.

[0018] In the above technical solution, the second molding cavity further includes:

[0019] The second main body forming part is used to form the shaft portion of the second segment of the insulator;

[0020] The second umbrella skirt forming part is used to form the umbrella skirt part of the second section of the insulator;

[0021] The second umbrella skirt forming part has a plurality of parts that are evenly spaced along the length direction of the second main body forming part. The second main body forming part is connected to the receiving cavity, and the joint end of the first end of the insulator can be embedded in the second umbrella skirt forming part close to the receiving cavity.

[0022] In the above technical solution, the auxiliary cooling mechanism further includes:

[0023] The mounting slots are respectively disposed on the non-joining surfaces of the first half-mold and the second half-mold;

[0024] A heat exchange tube, which is U-shaped and coiled in the mounting groove, contains a heat exchange medium.

[0025] Furthermore, the above technical solution also includes:

[0026] A turbulence block is disposed on the inner wall of the heat exchange tube, and the turbulence block has a plurality of blocks and is evenly spaced along the axial and circumferential directions of the heat exchange tube.

[0027] The beneficial effects of this utility model are:

[0028] 1. The use of a first mold and a second mold for segmented molding effectively meets the production needs of segmented composite suspension insulators. Compared with existing molds that cannot be used for segmented molding, the segmented molding method of this invention offers greater flexibility, enabling the production of composite suspension insulators of different lengths and structures according to different design requirements, thus expanding the applicability of the molds. Furthermore, segmented molding allows for adjustments to the raw material formulation and process parameters during the two molding processes, optimizing the insulator's performance to form composite insulators and improving product quality.

[0029] 2. The auxiliary cooling mechanism effectively solves the problem of low cooling efficiency in existing molds. The U-shaped coiled heat exchange tube increases the contact area with the mold, enabling more efficient absorption of heat from the mold. The turbulence blocks inside the heat exchange tube change the flow state of the cooling water, transforming it from laminar to turbulent flow, enhancing heat exchange between the cooling water and the tube wall, and further improving heat transfer efficiency.

[0030] The improved cooling efficiency significantly reduces the cooling time after insulator molding, thereby increasing production efficiency and reducing production costs. Furthermore, rapid cooling also reduces shrinkage and deformation of the raw materials during the cooling process, improving the dimensional accuracy and structural stability of the insulators.

[0031] 3. The design of the joint end lays a solid foundation for the connection with the second section. During the molding process of the second section, the inclusion cavity and limiting hole ensure the accurate placement of the first section of the insulator. The design of the joint end being embedded in the second shed molding part enables the two sections of the insulator to achieve a tight connection, increasing the contact area and improving the connection strength. It also prevents material leakage into the inclusion cavity during the molding process and prevents moisture penetration after the insulator is fully molded, thus enhancing the overall insulation performance of the insulator. Attached Figure Description

[0032] 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 these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model.

[0034] Figure 2 This is a schematic diagram of the non-joining surface structure of the first mold of this utility model.

[0035] Figure 3 This is a schematic diagram of the second mold structure of this utility model.

[0036] Figure 4 This is a schematic diagram of the non-joining surface structure of the second mold of this utility model.

[0037] Figure 5 This is a schematic diagram of the second mold structure in the second stage of the insulator forming process of this utility model.

[0038] Figure 6 This is a schematic diagram of the heat exchange tube structure of this utility model.

[0039] The markings in the diagram are as follows:

[0040] 1. First half mold; 2. First molding cavity; 20. First main body molding part; 21. First umbrella skirt molding part; 22. Joint end molding part; 3. Second half mold; 4. Second molding cavity; 40. Second main body molding part; 41. Second umbrella skirt molding part; 5. Receiving cavity; 6. Auxiliary cooling mechanism; 60. Mounting groove; 61. Heat exchange tube; 62. Baffle block; 7. Mandrel hole; 8. Limiting hole; 9. Injection channel. Detailed Implementation

[0041] 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.

[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] First mold

[0044] The first mold consists of two identical and symmetrically distributed first half molds. A complete first molding cavity is formed on the mating surface of the upper and lower first half molds for molding the first section of the insulator. Mandrel holes are provided at both ends of the first molding cavity, coaxially distributed with the first main molding part, and their diameter is slightly larger than the diameter of the mandrel. This allows the mandrel to be smoothly placed into the first molding cavity before injection molding. The mandrel design ensures the molding accuracy and structural strength of the shaft portion of the first section of the insulator.

[0045] The first main forming part is the core of the first forming cavity. Its shape matches the axial portion of the first segment of the insulator, and its length is determined according to the design requirements of the first segment of the insulator. Along the length of the first main forming part, several first umbel forming parts are evenly spaced. These first umbel forming parts are large umbel forming parts and small umbel forming parts. The diameter of the large umbel forming parts is larger than that of the small umbel forming parts, and they are alternately distributed. This design improves the insulator's resistance to flashover. The first umbel forming parts have a certain tilt angle relative to the axial direction of the first main forming part. Actual testing shows that a tilt angle of 5-10 degrees provides the best rain flashover protection for the insulator. A joining end forming part is provided at one end of the first main forming part. The diameter of the joining end forming part is smaller than that of the first umbel forming parts, preferably smaller than that of the small umbel forming parts. Its shape is roughly a scaled-down version of the umbel, with the same tilt angle as the umbel, and it can be fitted and connected with the second umbel forming part in the second mold.

[0046] Second mold

[0047] The second mold also consists of two identical and symmetrically distributed second half molds. A second molding cavity and a receiving cavity are formed on the mating surface of the upper and lower second half molds. The receiving cavity is used to place the already formed first segment of the insulator during the molding of the second segment. One end of the second molding cavity has a mandrel hole, and the other end has a limiting hole. The mandrel hole is used to place the mandrel, ensuring the molding accuracy of the shaft portion of the second segment of the insulator. The limiting hole is coaxially distributed with the second main molding part, and its diameter matches the diameter of the shaft portion of the first segment of the insulator, thus limiting the first segment and preventing it from shifting during the injection molding of the second segment.

[0048] The second main forming part has a similar structure to the first main forming part and is used to form the shaft portion of the second segment of the insulator. Its length is determined according to the design requirements of the second segment of the insulator. Along the length of the second main forming part, several second umbel forming parts are evenly spaced. The structure of the second umbel forming parts is the same as that of the first umbel forming part, also consisting of large umbel forming parts and small umbel forming parts, which are alternately distributed. The second main forming part is connected to the receiving cavity. When the first segment of the insulator is placed, the joint end of the first segment can be embedded in the second umbel forming part near the receiving cavity, achieving a precise connection between the two segments of the insulator and preventing material from the second main forming part from entering the receiving cavity.

[0049] Auxiliary cooling mechanism

[0050] The auxiliary cooling mechanism is installed on the non-mating surfaces of the first and second half-molds, and includes a mounting groove, heat exchange tubes, baffles, a water tank, connecting water pipes, and a water pump. The mounting groove is a recessed area on the non-mating surface of the mold, its shape matching the orientation of the heat exchange tubes. The heat exchange tubes are made of copper, possessing excellent thermal conductivity, and are arranged in a U-shaped coil within the mounting groove, increasing the contact area with the mold and improving heat dissipation efficiency. Several baffles are installed on the inner wall of the heat exchange tubes, evenly spaced along both the axial and circumferential directions. Adjacent baffles in the circumferential direction are staggered in the axial direction. This design disrupts the flow of the heat exchange medium within the tube, ensuring full contact between the medium and the tube wall and enhancing heat exchange performance. The mounting groove is filled with thermally conductive silicone grease, eliminating gaps between the heat exchange tubes and the mounting groove, further improving heat transfer efficiency. The water tank is used to store the heat exchange medium. It is connected to the heat exchange tubes by connecting water pipes. The water pump installed on the connecting water pipes provides power for the circulation of the heat exchange medium, so that the heat exchange medium can circulate continuously between the heat exchange tubes and the water tank, continuously removing the heat from the mold.

[0051] Injection channel

[0052] The injection channel is located on the mating surface of the first and second mold halves. The inlet of the injection channel is situated on the upper first and second mold halves, connecting to external injection molding equipment. The outlet connects to the corresponding first and second umbel forming sections, allowing the insulator molding material to smoothly enter the molding cavity. The inner diameter of the injection channel is designed based on the injection speed and material flowability to ensure that the material is evenly filled into all parts of the molding cavity.

[0053] Furthermore, to improve the overall performance of the mold, this invention also incorporates some conventional mold structures. For positioning, precise positioning components are included, such as positioning pins and positioning holes respectively located on the edges of the mating surfaces of the first and second mold halves. The dimensions of the positioning pins and positioning holes are matched to ensure accurate alignment of the first and second molds during mold closing, thus improving molding precision. For sealing, a sealing groove is provided on the mating surface of the first and second mold halves, and a sealing strip is installed within the sealing groove. The sealing strip is made of high-temperature resistant and wear-resistant rubber material, effectively enhancing the mold's sealing performance and preventing material leakage during injection molding.

[0054] Working principle

[0055] Insulator first section forming process

[0056] During the first stage of insulator molding, the mandrel is first placed in the first molding cavity through the mandrel holes at both ends, ensuring that the mandrel is coaxially distributed with the first main body molding part. Then, the upper and lower first half molds are closed, and precise alignment is achieved through the positioning pins and positioning holes in the positioning assembly. After the mold is closed, the sealing strip on the mating surface ensures the sealing of the mold.

[0057] The injection molding equipment is started. The insulator molding material enters the injection channel through the inlet on the upper first half mold, and then flows into the first skirt forming part and the first main body forming part of the first molding cavity through the outlet. During the injection process, the material gradually fills the entire first molding cavity under pressure. The mandrel prevents the material from entering the area where the mandrel is located, thus forming the shaft part of the first section of the insulator. When the first molding cavity is filled with material, the injection is stopped. At this time, the auxiliary cooling mechanism is started. The water pump delivers cooling water from the water tank to the heat exchange tube through the connecting water pipe. The cooling water flows in the heat exchange tube and absorbs the heat of the mold through the tube wall and the thermal grease. Because there are turbulence blocks in the heat exchange tube, the cooling water will generate violent turbulence during the flow, so that the cooling water is in full contact with the tube wall, improving the heat exchange efficiency. The cooled water after absorbing heat flows back to the water tank for cooling, and then is transported back to the heat exchange tube for recycling. During the cooling process, the material in the mold gradually solidifies and forms the shaft part, skirt part and joint end part of the first section of the insulator. After the raw material has completely solidified, open the first mold and take out the first section of the formed insulator.

[0058] The second stage forming process of insulator

[0059] After the first section of the insulator is formed, the second section of the insulator is formed. First, the mandrel is placed in the second forming cavity through the mandrel hole at one end of the second forming cavity. Then, the already formed first section of the insulator is placed into the receiving cavity of the second mold, so that the shaft part of the first section of the insulator is inserted into the limiting hole, and the joint end is embedded in the second shed forming part near the receiving cavity, so as to achieve precise positioning of the first section of the insulator and the second mold.

[0060] The upper and lower second mold halves are joined together, with precise alignment achieved through positioning components, and a sealing strip ensuring mold sealing. The injection molding equipment is started, and the insulator molding material enters the injection channel through the inlet on the upper second mold halves, flowing into the second skirt forming section and the second main body forming section of the second molding cavity through the outlet. Under pressure, the material fills the second molding cavity, and the mandrel forms the shaft of the second section of the insulator. Simultaneously, the material tightly bonds with the joint end of the first section of the insulator, forming a single unit. After injection molding, the auxiliary cooling mechanism is activated to cool the second mold. The cooling principle is the same as for the first mold, using circulating cooling water to remove heat from the mold, allowing the material to solidify quickly. Once the material has completely solidified, the second mold is opened, and the finished composite suspension insulator is removed.

[0061] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A mold for producing composite suspension insulators, comprising: A mold, the mold being used for forming suspension insulators; The mold is characterized in that it further includes: The first mold is composed of two first half molds, upper and lower, and the first half mold has a first forming cavity for forming the first section of the insulator on the splicing surface. The second mold consists of two upper and lower second half molds. The mating surface of the second half mold has a second forming cavity for forming the second section of the insulator and a receiving cavity for accommodating the first section of the insulator. An auxiliary cooling mechanism is provided on the non-joining surfaces of the first half-mold and the second half-mold to assist in heat dissipation of the mold. The first half-mold and the second half-mold are respectively provided with injection channels on their splicing surfaces for conveying insulator molding raw materials into the corresponding first molding cavity and the second molding cavity.

2. The mold for producing composite suspension insulators according to claim 1, characterized in that, The first molding cavity further includes: The first main body forming part is used to form the shaft portion of the first segment of the insulator; The first umbrella skirt forming part is used to form the umbrella skirt part of the first segment of the insulator; A joint end forming part is provided at one end of the main body forming and located at the joint end of the first segment of the insulator; The first umbrella skirt forming part has a plurality of parts that are evenly spaced along the length direction of the first main body forming part, and the diameter of the joint end forming part is smaller than that of the first umbrella skirt forming part.

3. The mold for producing composite suspension insulators according to claim 2, characterized in that, The second molding cavity further includes: The second main body forming part is used to form the shaft portion of the second segment of the insulator; The second umbrella skirt forming part is used to form the umbrella skirt part of the second section of the insulator; The second umbrella skirt forming part has a plurality of parts that are evenly spaced along the length direction of the second main body forming part. The second main body forming part is connected to the receiving cavity, and the joint end of the first end of the insulator can be embedded in the second umbrella skirt forming part close to the receiving cavity.

4. The mold for producing composite suspension insulators according to claim 1, characterized in that, The auxiliary cooling mechanism also includes: The mounting slots are respectively disposed on the non-joining surfaces of the first half-mold and the second half-mold; A heat exchange tube, which is U-shaped and coiled in the mounting groove, contains a heat exchange medium.

5. A mold for producing composite suspension insulators according to claim 2, characterized in that, Also includes: A turbulence block is disposed on the inner wall of the heat exchange tube, and the turbulence block has a plurality of blocks and is evenly spaced along the axial and circumferential directions of the heat exchange tube.

Images