Umbrella mold for composite insulator of overhead transmission line

Abstract

The utility model provides an overhead transmission line composite insulator umbrella mould, including mould main part and mould cavity, the mould cavity sets up in the mould main part inside, the mould cavity includes a plurality of umbrella inserts and head and tail inserts, umbrella inserts are located in the mould main part inside center position, head and tail inserts are symmetrically set up in the both sides of umbrella inserts, the both sides of head and tail inserts symmetrically detachable are equipped with movable element, the movable element side is equipped with connecting piece, umbrella inserts, head and tail inserts, movable element, connecting piece all are equipped with connecting hole, and one side of mould main part is equipped with connecting rod through side wall, and the connecting rod inserts into connecting hole and fixes, be equipped with a plurality of exhaust structure on the side wall of mould main part all around, exhaust structure includes axial exhaust hole and radial exhaust hole, and axial exhaust hole and radial exhaust hole all through mould main part side wall and mould cavity inside intercommunication, all the air of the air that the mould cavity cavity inside accumulated in the umbrella tip is discharged. Avoid the product forming defect caused by air stagnation.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to an umbrella-shaped mold for composite insulators of overhead transmission lines. Background Technology

[0002] Due to the uneven distribution of energy resources in my country, with more in the west and north than in the east and south, and the disparity in energy demand between the central and eastern regions, China has undertaken inter-regional power transmission projects such as the "West-to-East Power Transmission," "West-to-East Gas Transmission," and "North-to-South Coal Transportation." Ultra-high voltage (UHV) power transmission projects are the strongest guarantee for energy transmission, and overhead transmission lines are the transmission medium for UHV projects. Therefore, ensuring the safe operation of overhead transmission lines is of paramount importance. Composite insulators, as a key component of overhead transmission lines, play a crucial role in ensuring the safe operation of UHV power transmission projects by guaranteeing their performance.

[0003] A Chinese patent application (CN201120203220.6) discloses an energy-saving structure for a composite insulator injection molding machine mold. The structure includes a mold body and a heating plate attached to the upper surface of the mold body. The key feature is that insulation layers are installed on both side walls of the mold body, and these insulation layers are bolted to the side walls. Installing insulation layers on the side walls of the mold body slows down heat dissipation, and the bolted connection between the insulation layers and the side walls facilitates convenient and quick installation and disassembly.

[0004] However, the above-mentioned patent has certain defects in use. Due to the high temperature silicone rubber injection of the composite insulator for overhead transmission lines, a lot of air will be generated in the mold. Although all injection processes have venting settings, there will still be some air trapping at the tip of the umbrella.

[0005] To address these issues, a composite insulator umbrella-shaped mold for overhead transmission lines is proposed. Utility Model Content

[0006] To overcome the shortcomings of existing injection molding techniques that cause air trapping at the umbrella tip, this utility model provides an umbrella-shaped mold for composite insulators of overhead transmission lines.

[0007] This utility model is achieved using the following technical solution: A composite insulator umbrella-shaped mold for overhead transmission lines includes a mold body and a mold cavity. The mold cavity is located inside the mold body and includes multiple umbrella-shaped inserts and head and tail inserts. The umbrella-shaped inserts are located at the center inside the mold body, and the head and tail inserts are symmetrically arranged on both sides of the umbrella-shaped inserts. The head and tail inserts are symmetrically and detachably provided with movable parts on both sides. The movable parts are provided with connecting parts on their sides. The umbrella-shaped inserts, head and tail inserts, movable parts, and connecting parts are all provided with connecting holes. A connecting rod is provided through the side wall of one side of the mold body and is inserted into the connecting hole for fixation. The mold body has multiple venting structures on its four sides. The venting structures include axial venting holes and radial venting holes, both of which penetrate the side walls of the mold body and are connected to the inside of the mold cavity.

[0008] As a preferred embodiment of this utility model, the top of the umbrella-shaped insert, the head and tail inserts, the movable part, and the connecting part are all provided with placement grooves, which form a accommodating cavity for accommodating the material to be processed.

[0009] As a preferred embodiment of this utility model, the outer wall of the mold body is closely fitted with heat insulation cotton, the outer wall of the heat insulation cotton is wrapped with a heat insulation layer, and a first fixing member is provided on the heat insulation layer. The first fixing member penetrates the heat insulation layer and the heat insulation cotton and extends to the outer wall of the mold body for fixing.

[0010] As a preferred embodiment of this utility model, the mold body is provided with compensation heating holes on both sides, and heating tubes are embedded in the compensation heating holes and are embedded and wrapped around the mold cavity.

[0011] As a preferred embodiment of this utility model, the bottom of the mold body is symmetrically provided with reserved holes, a second fixing member is provided on one side of the connecting member, the second fixing member passes through the connecting member and is fixedly connected to the movable member, and a third fixing member is provided on both sides of the mold body, the third fixing member passes through the mold body and is fixedly connected to the head and tail inserts.

[0012] As a preferred embodiment of this utility model, the first fixing member, the second fixing member, and the third fixing member are specifically bolts.

[0013] As a preferred embodiment of this utility model, multiple lifting rings are symmetrically provided on both sides of the outer wall of the insulation layer.

[0014] As a preferred embodiment of this utility model, guide holes are symmetrically arranged on the top of the mold body.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. During processing, the material to be processed is placed into the receiving cavity. During injection molding, multiple venting structures are provided on the side walls around the mold body. The axial and radial venting holes in the venting structures are connected to the inside of the mold cavity, allowing all the air accumulated in the mold cavity to be discharged. This avoids product molding defects caused by air retention.

[0016] 2. The number of movable parts on both sides of the mold cavity can be freely increased to meet the production needs of products of different specifications. It is highly flexible and practical, with a simple overall structure. During installation, the connecting rods are passed through the connecting holes in sequence for fixing, thereby stably installing each insert and movable part on the mold body.

[0017] 3. During heat preservation and heating processing, the heat preservation cotton and heat preservation layer set on the outer wall of the mold body can effectively reduce heat loss. The heating tube is put into the heating compensation hole to provide external compensation heating for the mold. Attached Figure Description

[0018] Figure 1 This is an isometric view of the umbrella-shaped mold of this utility model; Figure 2 This is the main view of the umbrella-shaped mold of this utility model; Figure 3 This is a side view of the umbrella-shaped mold of this utility model; Figure 4 This is a right view of the umbrella-shaped mold of this utility model; In the diagram: 1. Mold body; 11. Insulation layer; 12. Insulation cotton; 13. Lifting ring; 14. Compensating heating hole; 15. Heating pipe; 2. Exhaust structure; 21. Axial exhaust hole; 22. Radial exhaust hole; 3. Reserved hole; 31. First fixing part; 32. Second fixing part; 33. Third fixing part; 4. Mold cavity; 41. Umbrella-shaped insert; 42. Head and tail inserts; 43. Movable part; 44. Connecting part; 45. Connecting hole; 46. Connecting rod; 5. Guide hole; 6. Placement groove; 61. Receiving cavity. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Example: Please see Figures 1-4The aforementioned compensation method for an umbrella-shaped mold for a composite insulator of an overhead transmission line includes a mold body 1 and a mold cavity 4. The mold cavity 4 is located inside the mold body 1 and includes multiple umbrella-shaped inserts 41 and head and tail inserts 42. The umbrella-shaped inserts 41 are located at the center inside the mold body 1, and the head and tail inserts 42 are symmetrically arranged on both sides of the umbrella-shaped inserts 41. The head and tail inserts 42 are symmetrically and detachably provided with movable parts 43 on both sides. The movable parts 43 are provided with connecting parts 44 on their sides. The umbrella-shaped inserts 41, head and tail inserts 42, movable parts 43, and connecting parts 44 are all provided with connecting holes 45. A connecting rod 46 is provided through the side wall of one side of the mold body 1, and the connecting rod 46 is inserted into the connecting hole 45 for fixation. In this embodiment, the mold cavity 4 is located at the center of the mold body 1. The mold cavity 4 includes multiple umbrella-shaped inserts 41 and head and tail inserts 42. Under normal circumstances, the umbrella-shaped inserts 41 and head and tail inserts 42 are stationary and fixed at the center of the mold body 1. The umbrella-shaped inserts 41 are composed of multiple interlocking parts. The head and tail inserts 42 are symmetrically arranged on both sides of the umbrella-shaped inserts 41. Movable parts 43 are symmetrically arranged on both sides of the head and tail inserts 42. The movable parts 43 are detachably arranged on both sides of the umbrella-shaped inserts 41, allowing for the addition or removal of the movable parts 43. The quantity can be adjusted to adjust the size of the mold cavity 4 to meet the production needs of products of different specifications. A connector 44 is closely attached to one side of the movable part 43. The connector 44 is used to lock the movable part 43 and the umbrella-shaped insert 41 to form a stable connection structure. Connecting holes 45 are provided on the umbrella-shaped insert 41, the first and last inserts 42, the movable part 43, and the connector 44. A connecting rod 46 is installed in the connecting hole 45 for fixing and positioning. The connecting rod 46 passes through the side wall of the mold body 1 and is inserted into the connecting hole 45 to achieve a stable fixation of the mold cavity 4 structure.

[0021] The mold body 1 has multiple venting structures 2 on its four sides. Each venting structure 2 includes an axial venting hole 21 and a radial venting hole 22. Both the axial venting hole 21 and the radial venting hole 22 penetrate the side wall of the mold body 1 and are connected to the inside of the mold cavity 4.

[0022] In this embodiment, the mold body 1 is a rectangular integral structure, and multiple venting structures 2 are evenly arranged on its four side walls. The venting structure 2 includes axial venting holes 21 and radial venting holes 22. The axial venting holes 21 are symmetrically arranged on both sides of the mold body 1, and the radial venting holes 22 are distributed on the front and rear end faces of the mold body 1. Both the axial venting holes 21 and the radial venting holes 22 penetrate the side walls of the mold body 1 and are connected to the inside of the mold cavity 4, so as to discharge all the air accumulated in the mold cavity 4 and avoid product molding defects caused by air retention.

[0023] Specifically, the top of the umbrella-shaped insert 41, the head and tail inserts 42, the movable part 43, and the connecting part 44 are all provided with placement grooves 6, which form a accommodating cavity 61 for accommodating the material to be processed.

[0024] In this embodiment, the top of the umbrella-shaped insert 41, the first and last inserts 42, the movable part 43, and the connector 44 are all provided with placement grooves 6. When the umbrella-shaped insert 41, the first and last inserts 42, the movable part 43, and the connector 44 are spliced ​​and fitted together, the placement grooves 6 are aligned and connected to each other to form a complete cavity space, which is a molded cavity 61 for accommodating the material to be processed. The material to be processed is placed in the cavity 61 formed by the placement grooves 6 and formed by injection molding.

[0025] Specifically, the outer wall of the mold body 1 is fitted with thermal insulation cotton 12, the outer wall of the thermal insulation cotton 12 is wrapped with a thermal insulation layer 11, and a first fixing member 31 is provided on the thermal insulation layer 11. The first fixing member 31 penetrates the thermal insulation layer 11 and the thermal insulation cotton 12 and extends to the outer wall of the mold body 1 for fixing.

[0026] In this embodiment, the outer wall of the mold body 1 is tightly fitted with thermal insulation cotton 12, and the outer wall of the thermal insulation cotton 12 is wrapped with a thermal insulation layer 11. From the outside to the inside, the thermal insulation layer 11 and the thermal insulation cotton 12 are arranged in sequence to further enhance the thermal insulation effect. The thermal insulation layer 11 is specifically a phenolic board. The first fixing member 31 penetrates through the thermal insulation layer 11 and the thermal insulation cotton 12 and extends to the outer wall of the mold body 1 for fixing. The first fixing member 31 is used to fix the thermal insulation layer 11 and the thermal insulation cotton 12 to the mold body 1.

[0027] Specifically, the mold body 1 has compensation heating holes 14 on both sides, and heating tubes 15 are embedded in the compensation heating holes 14, which are embedded and wrapped around the mold cavity 4.

[0028] In this embodiment, the mold body 1 is provided with compensation heating holes 14 on both sides, and heating tubes 15 are embedded in the compensation heating holes 14. The heating tubes 15 are located inside the mold body 1 and are embedded around the mold cavity 4, which can provide external compensation heating to the mold.

[0029] Specifically, the bottom of the mold body 1 is symmetrically provided with reserved holes 3, and a second fixing member 32 is provided on one side of the connecting member 44. The second fixing member 32 passes through the connecting member 44 and is fixedly connected to the movable member 43. A third fixing member 33 is provided on both sides of the mold body 1. The third fixing member 33 passes through the mold body 1 and is fixedly connected to the head and tail inserts 42.

[0030] In this embodiment, the bottom of the mold body 1 is symmetrically provided with reserved holes 3. The reserved holes 3 are used to connect with external equipment and for fixing. A second fixing member 32 is provided on one side of the connecting member 44, and a third fixing member 33 is provided on both sides of the mold body 1. The first fixing member 31, the second fixing member 32, and the third fixing member 33 are specifically bolts. The movable member 43 and the head and tail inserts 42 are fixedly connected by bolts to prevent the mold cavity 4 from shifting due to excessive pressure during injection.

[0031] Specifically, multiple lifting rings 13 are symmetrically arranged on both sides of the outer wall of the insulation layer 11.

[0032] In this embodiment, multiple lifting rings 13 are symmetrically arranged on both sides of the outer wall of the insulation layer 11. The lifting rings 13 facilitate the handling and installation of the mold as a whole.

[0033] Specifically, guide holes 5 are symmetrically arranged on the top of the mold body 1.

[0034] In this embodiment, guide holes 5 are symmetrically provided on the top of the mold body 1. The guide holes 5 are used to ensure accurate alignment during the mold closing process when injection molding and stamping.

[0035] The principle of this utility model is as follows: During assembly, the umbrella-shaped insert 41 and the first and last inserts 42 remain stationary, their positions fixed at the center of the mold body 1. The umbrella-shaped insert 41 is composed of multiple interconnected parts, and the first and last inserts 42 are arranged side by side on the umbrella-shaped insert 41. Subsequently, according to the production requirements of different product specifications, corresponding movable parts 43 are added or removed. Then, the connecting parts 44 are inserted, at which point the connecting holes 45 correspond one-to-one. The connecting rod 46 is inserted into the connecting holes 45, and the second fixing part 32 and the third fixing part 33 are installed accordingly to prevent the mold cavity 4 from shifting due to excessive pressure during injection. When the umbrella-shaped insert 41, the first and last inserts 42, the movable parts 43, and the connecting parts 44 are interconnected and engaged... The placement slots 6 are aligned and connected to each other to form a complete cavity space, which is a molded cavity 61 for accommodating the material to be processed. The material to be processed is placed in the molded cavity 61 formed by the placement slots 6 and then stamped. When the stamping mold is closed, the guide hole 5 is precisely aligned. The radial vent holes 22 all penetrate the side wall of the mold body 1 and are connected to the inside of the mold cavity 4 to expel all the air accumulated in the mold cavity 4, avoiding product molding defects caused by air retention. At the same time, due to the heat insulation layer 11 and heat insulation cotton 12 of the outer frame of the mold body 1, heat loss can be greatly reduced. In addition, the heating pipe 15 is placed in the compensation heating hole 14 to provide external compensation heating to the mold.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A composite insulator umbrella-shaped mold for overhead transmission lines, comprising a mold body (1) and a mold cavity (4), wherein the mold cavity (4) is disposed inside the mold body (1), characterized in that: The mold cavity (4) includes multiple umbrella-shaped inserts (41) and head and tail inserts (42). The umbrella-shaped inserts (41) are located at the center of the mold body (1). The head and tail inserts (42) are symmetrically arranged on both sides of the umbrella-shaped inserts (41). The head and tail inserts (42) are symmetrically and detachably provided with movable parts (43) on both sides. The movable parts (43) are provided with connecting parts (44) on their sides. The umbrella-shaped inserts (41), head and tail inserts (42), movable parts (43), and connecting parts (44) are all provided with connecting holes (45). A connecting rod (46) is provided through the side wall on one side of the mold body (1), and the connecting rod (46) is inserted into the connecting hole (45) for fixation. The mold body (1) has multiple venting structures (2) on its four sides. The venting structures (2) include axial venting holes (21) and radial venting holes (22). Both the axial venting holes (21) and the radial venting holes (22) penetrate the side wall of the mold body (1) and are connected to the inside of the mold cavity (4).

2. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 1, characterized in that: The top of the umbrella-shaped insert (41), the head and tail inserts (42), the movable part (43), and the connector (44) are all provided with a placement groove (6), which forms a receiving cavity (61) for accommodating the material to be processed.

3. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 2, characterized in that: The outer wall of the mold body (1) is fitted with a heat insulation cotton (12), and the outer wall of the heat insulation cotton (12) is wrapped with a heat insulation layer (11). The heat insulation layer (11) is provided with a first fixing member (31), which penetrates the heat insulation layer (11) and the heat insulation cotton (12) and extends to the outer wall of the mold body (1) for fixing.

4. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 3, characterized in that: The mold body (1) is provided with compensation heating holes (14) on both sides. The compensation heating holes (14) are embedded with heating tubes (15), which are embedded and wrapped around the mold cavity (4).

5. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 4, characterized in that: The bottom of the mold body (1) is symmetrically provided with reserved holes (3). A second fixing member (32) is provided on one side of the connector (44). The second fixing member (32) passes through the connector (44) and is fixedly connected to the movable member (43). A third fixing member (33) is provided on both sides of the mold body (1). The third fixing member (33) passes through the mold body (1) and is fixedly connected to the head and tail inserts (42).

6. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 5, characterized in that: The first fixing member (31), the second fixing member (32), and the third fixing member (33) are specifically bolts.

7. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 6, characterized in that: Multiple lifting rings (13) are symmetrically arranged on both sides of the outer wall of the insulation layer (11).

8. The umbrella-shaped mold for composite insulators of overhead transmission lines according to claim 7, characterized in that: The top of the mold body (1) is symmetrically provided with guide holes (5).

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