A preparation mold for an optical fiber composite insulator core rod

Abstract

The utility model discloses a kind of preparation moulds for optical fiber composite insulator core rod, for preparing the core rod with optical fiber groove, comprising: mould body and inner insert, the die cavity is opened in mould body inside, at least one inlay groove is provided in die cavity;Inner insert includes first installation part and extrusion part, first installation part is installed in inlay groove and is with inlay groove interference fit, extrusion part one end connects first installation part, the other end protrudes inlay groove to die cavity, and the projection of extrusion part protruding part in inlay groove in the radial direction of core rod corresponds the projection of optical fiber groove in the radial direction of core rod.The utility model is installed in inlay groove by installing inner insert in inlay groove, the part of extrusion part protruding inlay groove is extruded on core rod when core rod pultrusion forming, and optical fiber groove is extruded, since core rod and optical fiber groove are integrally formed, preparation procedure is simple and fast, and the optical fiber groove size standard and high precision prepared, when installing optical fiber in optical fiber groove, optical fiber is not easy to damage.

Description

Technical Field

[0001] This utility model relates to molds, and more particularly to a mold for preparing fiber optic composite insulator core rods. Background Technology

[0002] In the development of intelligent power systems, fiber optic instrument transformers have become core equipment for power metering and monitoring, and fiber optic composite insulators, as key components of fiber optic instrument transformers, directly affect the operational stability and signal transmission reliability of the instrument transformers. Fiber optic composite insulators are based on traditional composite insulator insulation technology, but innovatively integrate optical signal transmission functions, retaining insulation performance while transmitting real-time monitoring data of power equipment. The core challenge in their research and development and production lies in the effective implantation and stable fixation of the optical fiber. Because the insulators need to withstand harsh operating conditions such as high voltage and strong electromagnetic fields, improper implantation methods can lead to signal loss or fiber breakage.

[0003] Currently, there are two methods on the market: one uses a hollow core rod to insert the optical fiber and then fill it with glue to fix the position of the optical fiber; the other involves digging a groove inside the core rod and embedding the optical fiber in it to fix the position of the optical fiber. However, the former is prone to producing air bubbles and the adhesive shrinks and damages the optical fiber, while the latter requires high processing precision, has complex procedures and high costs. The existing process has low maturity and poor stability, and urgently needs to be improved and optimized. Utility Model Content

[0004] The purpose of this invention is to provide a mold for preparing the core rod of an optical fiber composite insulator, which aims to solve the problems of easy damage to the optical fiber and complex processes in the two existing methods of treating the core rod to fix the optical fiber in optical fiber composite insulators.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a mold for preparing fiber optic composite insulator core rods is provided for preparing core rods with fiber optic slots, comprising: a mold body and an inner insert, wherein the mold body has a draft cavity inside, and at least one inlay slot is provided in the draft cavity; the inner insert includes a first mounting part and a pressing part, wherein the first mounting part is installed in the inlay slot and is interference-fitted with the inlay slot, one end of the pressing part is connected to the first mounting part, and the other end protrudes from the inlay slot into the draft cavity, and the projection of the portion of the pressing part protruding from the inlay slot in the radial direction of the core rod corresponds to the projection of the fiber optic slot in the radial direction of the core rod.

[0006] Furthermore, the inlay groove includes a mounting groove and a guide groove that are perpendicular to each other and connected. The projection of the guide groove in the radial direction of the mandrel points to the center of the projection of the draft cavity in the radial direction of the mandrel. The first mounting part is installed in the mounting groove and is interference-fitted with the mounting groove. The extrusion part is located in the guide groove, and the other end of the extrusion part protrudes from the guide groove into the draft cavity.

[0007] Furthermore, six inlay slots are provided, and the six inlay slots are evenly arranged on the draft cavity.

[0008] Furthermore, the interference fit between the first mounting part and the inlay groove is 0.005mm~0.015mm.

[0009] Furthermore, the first mounting part is detachably connected to the mounting groove and has gaps on both sides of the first mounting part.

[0010] Furthermore, the mold for preparing the fiber optic composite insulator core rod also includes a replacement block, which includes a second mounting part and a filler part. The second mounting part is installed in the inlay groove and is interference-fitted with the inlay groove. One end of the filler part is connected to the second mounting part, and the other end corresponds to the opening of the guide groove on the drafting cavity.

[0011] Furthermore, the three replacement blocks and the three inlay blocks are spaced apart and installed in the six inlay slots.

[0012] Furthermore, the six inner inserts are mounted within the six inlay slots.

[0013] Furthermore, the inner insert is elongated and has the same length as the draft cavity, and the insert groove extends from one end of the draft cavity to the other end of the draft cavity.

[0014] Furthermore, the portion of the extrusion part that protrudes from the inlay groove is trapezoidal in shape, and its projected length in the radial direction of the mandrel gradually decreases from the end near the first mounting part to the end away from the first mounting part.

[0015] This invention provides a mold for preparing a fiber optic composite insulator core rod, used to prepare a core rod with fiber optic grooves. The mold includes a mold body and an inner insert. The mold body has a drawing cavity with at least one inlay groove. The inner insert includes a first mounting portion and a pressing portion. The first mounting portion is installed in the inlay groove and is interference-fitted with it. One end of the pressing portion is connected to the first mounting portion, and the other end protrudes from the inlay groove into the drawing cavity. The projection of the portion protruding from the inlay groove in the radial direction of the core rod corresponds to the projection of the fiber optic groove in the radial direction of the core rod. This invention, by installing the inner insert in the inlay groove, allows the portion protruding from the inlay groove to extrude the fiber optic groove onto the core rod during pultrusion molding. Because the core rod and fiber optic groove are integrally formed, the preparation process is simple and quick. Furthermore, the interference fit between the first mounting portion and the inlay groove helps maintain the stability of the inner insert and the inlay groove during core rod pultrusion, resulting in a standard and highly accurate fiber optic groove. This also reduces the risk of damaging the fiber optic cable when installing it within the groove. In practical applications, depending on the requirements of different fiber composite insulator core rods, different inserts can be used for different fiber slot sizes. The shape and size of the fiber slot can be adjusted simply by adjusting the shape and size of the part of the extrusion section that protrudes from the insert slot. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A first-view structural schematic diagram of the mold for preparing fiber optic composite insulator core rods provided in an embodiment of this utility model; Figure 2 Partial Figure A provided for an embodiment of this utility model; Figure 3 A second-view structural schematic diagram of the mold for preparing fiber optic composite insulator core rods provided in an embodiment of this utility model; Figure 4 A schematic diagram of the structure of the three-part optical fiber composite insulator core rod provided in this embodiment of the utility model; Figure 5 A schematic diagram of the structure of the six-part optical fiber composite insulator core rod provided in the embodiment of this utility model.

[0018] Explanation of the markings in the image: 1. Fiber optic cable tray; 2. Core rod; 3. Mold body; 31. Draft cavity; 32. Insertion groove; 321. Mounting groove; 322. Guide groove; 4. Inset block; 41. First mounting part; 42. Extrusion part; 5. Replacement block; 51. Second mounting part; 52. Complete the rest. Detailed Implementation

[0019] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] Combination Figure 1-5 As shown, this utility model provides a mold for preparing a fiber optic composite insulator core rod 2, used to prepare a core rod 2 with a fiber optic groove 1. It includes: a mold body 3 and an inner insert 4. The mold body 3 has a draft cavity 31 inside, and at least one inlay groove 32 is provided in the draft cavity 31. The inner insert 4 includes a first mounting part 41 and a pressing part 42. The first mounting part 41 is installed in the inlay groove 32 and is interference-fitted with the inlay groove 32. One end of the pressing part 42 is connected to the first mounting part 41, and the other end protrudes from the inlay groove 32 into the draft cavity 31. The projection of the portion of the pressing part 42 protruding from the inlay groove 32 in the radial direction of the core rod 2 corresponds to the projection of the fiber optic groove 1 in the radial direction of the core rod 2.

[0024] In this embodiment of the present invention, the draft cavity 31 of the existing core rod 2 preparation mold is cylindrical. At least one inlay groove 32 is provided on the basis of the existing draft cavity 31. An inner insert 4 is installed in the inlay groove 32. The projection of the part of the extrusion part 42 protruding from the inlay groove 32 in the radial direction of the core rod 2 corresponds to the projection of the fiber groove 1 in the radial direction of the core rod 2. That is, the part of the extrusion part 42 protruding from the inlay groove 32 is extruded into the fiber groove 1 on the core rod 2 during the pultrusion molding of the core rod 2. Since the core rod 2 and the fiber groove 1 are integrally formed, the preparation process is simple and quick. Moreover, the interference fit between the first mounting part 41 and the inlay groove 32 helps to maintain the stability of the inner insert 4 and the inlay groove 32 when the mold pultrudes the core rod 2, so that the prepared fiber groove 1 has standard size and high precision, and the fiber is not easily damaged when the fiber is installed in the fiber groove 1. In practical applications, depending on the requirements of different fiber composite insulator core rods 2, different inserts 4 can be used for different fiber slots 1. The shape and size of the fiber slot 1 can be adjusted simply by adjusting the shape and size of the part of the extrusion part 42 that protrudes from the inlay slot 32.

[0025] In some embodiments, the insert groove 32 includes a mounting groove 321 and a guide groove 322 that are perpendicular to each other and communicate with each other. The projection of the guide groove 322 in the radial direction of the mandrel 2 points to the center of the projection of the draft cavity 31 in the radial direction of the mandrel 2. The first mounting part 41 is installed in the mounting groove 321 and is interference-fitted with the mounting groove 321. The extrusion part 42 is located in the guide groove 322, and the other end of the extrusion part 42 protrudes from the guide groove 322 into the draft cavity 31.

[0026] In this embodiment, the projection of the guide groove 322 in the radial direction of the mandrel 2 points to the center of the projection of the draft cavity 31 in the radial direction of the mandrel 2. That is, the guide groove 322 is perpendicular to the tangent at the opening of the draft cavity 31. The mounting groove 321 and the guide groove 322 are perpendicular to each other, that is, the mounting groove 321 is parallel to the tangent at the opening of the draft cavity 31. This helps to ensure the interference fit between the first mounting part 41 and the mounting groove 321, maintaining the stability of the inner insert 4 and the mounting groove 32 when the mandrel 2 is pulled by the mold, thereby ensuring the accuracy of the fiber optic groove 1 and preventing damage to the fiber when installing the fiber in the fiber optic groove 1. Specifically, the first mounting part 41 and the extrusion part 42 are perpendicular to each other, further ensuring the stability between the inner insert 4 and the mounting groove 32.

[0027] In some embodiments, six inlay slots 32 are provided, and the six inlay slots 32 are evenly arranged on the draft cavity 31.

[0028] In this embodiment, six inlay slots 32 are evenly arranged on the draft cavity 31, which helps to form equally divided fiber slots 1 on the core rod 2. The fiber slots 1 are evenly distributed on the circumference of the core rod 2, making fiber sensing more accurate.

[0029] In some embodiments, the interference fit between the first mounting portion 41 and the inlay groove 32 is 0.005mm to 0.015mm.

[0030] In this embodiment, the interference fit is 0.005mm to 0.015mm, which not only ensures the stability between the inner insert 4 and the insert groove 32 when the mandrel 2 is pultruded in the mold, but also helps to install or remove the inner insert 4 from the insert groove 32.

[0031] In some embodiments, the first mounting portion 41 is detachably connected to the mounting groove 321 and gaps are left on both sides of the first mounting portion 41.

[0032] In this embodiment, the first mounting part 41 is detachably connected to the mounting groove 321 so that the inner insert 4 can be replaced. Moreover, gaps are left on both sides of the first mounting part 41 to reduce the contact area between the inner insert 4 and the mounting groove 32, thereby reducing the friction between the two and helping to remove the inner insert 4 from the mounting groove 32.

[0033] In some embodiments, the mold for preparing the fiber optic composite insulator core rod 2 further includes a replacement block 5, which includes a second mounting part 51 and a supplementary part 52. The second mounting part 51 is installed in the inlay groove 32 and is interference-fitted with the inlay groove 32. One end of the supplementary part 52 is connected to the second mounting part 51, and the other end corresponds to the opening of the guide groove 322 on the drafting cavity 31.

[0034] In this embodiment, the second mounting part 51 of the replacement block 5 and the first mounting part 41 of the inner insert block 4 have the same function and structure. They are both used to be installed in the insert groove 32 and to be interference-fitted with the insert groove 32. The other end of the replacement block 52 is filled with the opening of the guide groove 322 on the draft cavity 31. That is, the installation of the replacement block 5 can fill the insert groove 32 opened on the draft cavity 31, and avoid the opening of the guide groove 322 on the draft cavity 31 from having an adverse effect on the pultrusion molding of the mandrel 2.

[0035] In some embodiments, three replacement blocks 5 and three inlay blocks 4 are spaced apart and installed in six inlay slots 32.

[0036] In this embodiment, three replacement blocks 5 complete the three inlay slots 32 opened on the draft cavity 31, and three inner inserts 4 are installed in the other three inlay slots 32. The three inner inserts 4 pull the core rod 2 to form three equally divided fiber slots 1. The fiber slots 1 are evenly distributed on the circumference of the core rod 2, making the fiber sensing more accurate.

[0037] In some embodiments, six inserts 4 are mounted in six insert slots 32.

[0038] In this embodiment, six inlay blocks 4 pultrude the core rod 2 to form six equally divided fiber slots 1. The fiber slots 1 are evenly distributed on the circumference of the core rod 2, making fiber sensing more accurate.

[0039] In some embodiments, the insert 4 is elongated and has the same length as the draft cavity 31, and the insert groove 32 extends from one end of the draft cavity 31 to the other end of the draft cavity 31.

[0040] In this embodiment, the inner insert 4 is long and strip-shaped and has the same length as the draft cavity 31, and the inlay groove 32 is opened from one end of the draft cavity 31 to the other end of the draft cavity 31, which ensures the uniform forming of the fiber groove 1 on the core rod 2, ensures the high precision of the fiber groove 1, and thus ensures that the fiber is not easily damaged when installing the fiber in the fiber groove 1.

[0041] In some embodiments, the portion of the extrusion portion 42 protruding from the inlay groove 32 is trapezoidal in shape, and the projected length in the radial direction of the mandrel 2 gradually decreases from the end near the first mounting portion 41 to the end away from the first mounting portion 41.

[0042] In this embodiment, the projection length of the extrusion part 42 in the radial direction of the core rod 2 gradually decreases from the end near the first mounting part 41 to the end away from the first mounting part 41. That is, the end near the core rod 2 is narrower, which makes it easier to pull the core rod 2. Moreover, the part of the extrusion part 42 that protrudes from the inlay groove 32 is trapezoidal in shape. The trapezoidal fiber groove 1 formed helps to install the fiber and ensures that the fiber is not easily damaged when it is installed in the fiber groove 1.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A mold for preparing fiber optic composite insulator core rods, used to prepare core rods with fiber optic slots, characterized in that, include: The mold body has a draft cavity inside, and at least one insert groove is provided in the draft cavity; The inner insert includes a first mounting part and a pressing part. The first mounting part is installed in the inlay groove and is interference-fitted with the inlay groove. One end of the pressing part is connected to the first mounting part, and the other end protrudes from the inlay groove into the draft cavity. The projection of the portion of the pressing part protruding from the inlay groove in the radial direction of the core rod corresponds to the projection of the fiber groove in the radial direction of the core rod.

2. The mold for preparing fiber optic composite insulator core rods according to claim 1, characterized in that, The inlay groove includes a mounting groove and a guide groove that are perpendicular to each other and connected. The projection of the guide groove in the radial direction of the mandrel points to the center of the projection of the draft cavity in the radial direction of the mandrel. The first mounting part is installed in the mounting groove and is interference-fitted with the mounting groove. The extrusion part is located in the guide groove, and the other end of the extrusion part protrudes from the guide groove into the draft cavity.

3. The mold for preparing fiber optic composite insulator core rods according to claim 2, characterized in that, The inlay groove is provided in six places, and the six inlay grooves are evenly arranged on the draft cavity.

4. The mold for preparing fiber optic composite insulator core rods according to claim 3, characterized in that, The interference fit between the first mounting part and the inlay groove is 0.005mm to 0.015mm.

5. The mold for preparing fiber optic composite insulator core rods according to claim 4, characterized in that, The first mounting part is detachably connected to the mounting groove and has gaps on both sides of the first mounting part.

6. The mold for preparing fiber optic composite insulator core rods according to claim 5, characterized in that, Also includes: The replacement block includes a second mounting part and a filler part. The second mounting part is installed in the insert groove and is interference-fitted with the insert groove. One end of the filler part is connected to the second mounting part, and the other end corresponds to the opening of the guide groove on the draft cavity.

7. The mold for preparing fiber optic composite insulator core rods according to claim 6, characterized in that, The three replacement blocks and the three inlay blocks are installed at intervals within the six inlay slots.

8. The mold for preparing fiber optic composite insulator core rods according to claim 3, characterized in that, The six inlays are installed in the six inlay slots.

9. The mold for preparing fiber optic composite insulator core rods according to claim 1, characterized in that, The insert is elongated and has the same length as the draft cavity, and the insert groove extends from one end of the draft cavity to the other end of the draft cavity.

10. The mold for preparing fiber optic composite insulator core rods according to claim 1, characterized in that, The portion of the extrusion part that protrudes from the inlay groove is trapezoidal in shape, and its projected length in the radial direction of the mandrel gradually decreases from the end near the first mounting part to the end away from the first mounting part.

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