CN220031036U - Mould of special-shaped umbrella skirt solid-sealed polar pole - Google Patents

Abstract

The utility model relates to the field of models or cores, and provides a die for a special-shaped umbrella skirt solid-sealed pole, which comprises a die body and annular splicing blocks, wherein the die body comprises a movable die, a static die, a lower core template, an upper die head and a vacuum arc extinguishing chamber, and when the movable die and the static die are spliced, a cavity structure with two open ends is formed; when the movable mould, the static mould, the lower core mould plate, the upper mould head and the vacuum arc-extinguishing chamber are combined, an injection cavity of the solid-sealed polar pole is formed, and a plurality of umbrella skirt grooves are formed in the inner side surface of the cavity structure along the axial direction of the solid-sealed polar pole. Through designed annular piece in the umbrella skirt groove, can eliminate the chamfer in umbrella skirt groove to through annular piece design drawing mould inclined plane, so that when dividing the mould, separate the cushion earlier simultaneously, then separate cushion and solid sealed utmost point post again, so can guarantee the structural integrity of solid sealed utmost point post, guaranteed the product quality of solid sealed utmost point post promptly, and the efficiency of production.

Description

Mould of special-shaped umbrella skirt solid-sealed polar pole

Technical Field

The utility model relates to the field of models or cores, in particular to a die for a special-shaped umbrella skirt solid-sealed polar pole.

Background

The insulator is generally used for village and town power lines (commonly called as telegraph poles), and the overhead line insulator can play an important role in overhead transmission lines. A plurality of suspended insulators are hung at one end of the high-voltage wire connecting tower, which is usually made of silica gel or ceramics for increasing the creepage distance, so that the insulators are called. The insulator plays two basic roles in the overhead transmission line, namely, supporting the wire and preventing the current from flowing back to the ground, the two roles must be ensured, the insulator should not fail due to various electromechanical stresses caused by the change of the environment and the electrical load condition, otherwise, the insulator does not play a significant role, and the service life and the operation life of the whole line are damaged.

Because the insulator is used outdoors, in rainy days, large foggy days, snowy days and other days, conditions such as rain drop prevention, condensation prevention, accumulation prevention and the like are needed, however, the insulation performance of the existing insulator under severe conditions such as rainwater, condensation snow, dirt and the like is relatively poor.

In the application number of CN200720175153.5, the name of the epoxy resin injection support column mould is recorded as a mould cavity with an upper taper shank, a movable mould, a static mould and a lower taper shank, and the mould cavity comprises an auxiliary taper shank formed by combining a plurality of standard sample blocks, wherein the auxiliary taper shank can be combined with the lower taper shank together, and different specifications are formed with the movable mould, the static mould and the upper taper shank according to actual production needs. However, the main purpose of the present utility model is to manufacture pillar molds of different heights and to improve the adaptability. The functional design of the large umbrella skirt structure and the small umbrella skirt structure and the design of the vacuum arc extinguishing chamber are not provided, and the problem of insulation performance under severe conditions such as rainwater or condensation snow and dirt cannot be solved.

Disclosure of Invention

The utility model aims to provide a mould for a special umbrella skirt solid-sealed polar pole, which aims to solve the problems that the structural design of the existing injection mould is unreasonable, so that condensation, snow or dirt deposition (dirt is dust or animal feces and the like) is easy to form on an injected insulator, and the insulating property is relatively poor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a mold for a profiled umbrella skirt solid-sealed pole, comprising:

the die comprises a die body, a movable die, a static die, a lower core die plate, an upper die head and a vacuum arc-extinguishing chamber, wherein when the movable die is combined with the static die, a cavity structure with two open ends is formed inside the movable die and the static die, the lower core die plate is arranged at the bottom of the cavity structure, the upper die head is arranged at the top of the cavity structure, the vacuum arc-extinguishing chamber is arranged between the upper die head and the lower core die plate, and a plurality of umbrella skirt grooves are formed in the inner side surface of the cavity structure along the axial direction of the solid-sealed polar pole;

when the movable mould, the static mould, the lower core template, the upper mould head and the vacuum arc-extinguishing chamber are spliced, an injection cavity for fixedly sealing the pole is formed; and

The annular splicing blocks are arranged in a half-half splicing mode along the parting faces of the movable die and the static die, and the annular splicing blocks are arranged on the umbrella skirt grooves to form an umbrella skirt structure of the solid-sealed polar pole.

Preferably, the lower core mold plate comprises a bottom plate and an inner spiral umbrella skirt mold head arranged on the bottom plate, and the inner spiral umbrella skirt mold head is sleeved in the cavity structure.

Preferably, the umbrella skirt groove comprises a plurality of large umbrella skirt grooves and small umbrella skirt grooves which are obliquely arranged, and the large umbrella skirt grooves and the small umbrella skirt grooves are alternately arranged on the inner side surface of the first die cavity.

Preferably, the annular splicing block comprises a large cushion block matched with the large umbrella skirt groove and a small cushion block matched with the small umbrella skirt groove.

Preferably, the edge of the annular splicing block is symmetrically provided with a plurality of pairs of protrusions, and the umbrella skirt groove is provided with grooves which are embedded with the protrusions.

Preferably, one surface of the annular splice block, which is in contact with the umbrella skirt groove, is set as a pattern drawing inclined surface, and the other surface of the annular splice block is set as an inclined surface which is inclined upwards along the notch of the umbrella skirt groove.

Preferably, the annular tiles have a thickness of greater than 6 mm.

Preferably, an upper outgoing line is arranged between the upper die head and the vacuum arc extinguishing chamber, and a locking bolt is arranged between the upper outgoing line and the upper die head.

Preferably, a lower outgoing line is arranged between the lower core template and the vacuum arc-extinguishing chamber, the lower outgoing line is arranged at the lower end of the vacuum arc-extinguishing chamber, a movable terminal is sleeved outside the lower outgoing line, and a spring contact finger is arranged between the movable terminal and the lower outgoing line.

Preferably, a silicon rubber layer is arranged on the outer side face of the vacuum arc extinguishing chamber.

After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages:

1. the die body is formed by splicing a movable die, a static die, a lower core template, an upper die head and a vacuum arc-extinguishing chamber, and an injection cavity is formed. Therefore, after the injection molding port of the mold for the special-shaped umbrella skirt solid-sealed polar pole is used, the solid-sealed polar pole with the vacuum arc-extinguishing chamber is formed by solidification after the epoxy resin material is injected, and the epoxy resin material has the high-voltage insulation performance, has the outstanding advantages of excellent dimensional stability, high mechanical strength and the like, so that the high-voltage insulation performance of the insulator is ensured, and meanwhile, the vacuum arc-extinguishing chamber also has the rapid power-off performance.

2. In order to separate the solid sealed pole from the die body, an annular splicing block is designed in the umbrella skirt groove so as to eliminate the inverted inclined plane of the umbrella skirt groove, and a drawing die inclined plane is designed through the annular splicing block, so that the product quality of the solid sealed pole is improved relatively, and the production efficiency is improved.

3. The big, small umbrella skirt structure that the slope set up to and the design of the inclined plane of big or small umbrella skirt (the another side of annular piece together sets up to the inclined plane of upwards inclining along the notch in umbrella skirt groove), can effectually prevent to form condensation, snow etc. on the solid sealed polar pole, guarantee the working property of insulator.

Drawings

FIG. 1 is a half cross-sectional view of a mold for a profiled umbrella skirt encapsulated pole according to the present utility model;

FIG. 2 is a partial cross-sectional view of a mold for a profiled shed encapsulated pole according to the present utility model;

FIG. 3 is a cross-sectional view of a mold and a vacuum interrupter of a special-shaped umbrella skirt solid-sealed polar pole according to the utility model;

FIG. 4 is a schematic structural view of annular segments of a mold for the special-shaped umbrella skirt solid-sealed polar pole according to the present utility model;

fig. 5 is a partial cross-sectional view of an annular segment of a mold for a profiled shed solid-sealed pole according to the utility model.

Reference numerals illustrate:

10. a die body; 101. a movable mold; 102. a static mold; 103. a core setting template;

104. an upper die head; 105. a vacuum arc extinguishing chamber;

1031. a bottom plate; 1032. an inner spiral umbrella skirt die head;

1051. an upper outgoing line; 1052. locking a bolt; 1053. a lower outlet line; 1054. a movable terminal;

1055. spring contact fingers; 1056. a silicone rubber layer;

11. an injection cavity; 111. a cavity structure; 112. umbrella skirt groove;

1121. a large umbrella skirt groove; 1122. a small umbrella skirt groove; 1123. a groove;

20. annular splicing blocks; 201. a large cushion block; 202. a small cushion block; 203. a protrusion;

204. drawing a die inclined plane; 205. an inclined surface.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, it should be noted that:

the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements of the present utility model must have a particular orientation, and thus should not be construed as limiting the utility model.

When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the utility model will be understood by those skilled in the art according to the specific circumstances.

Examples

Referring to fig. 1, 2, 3, 4 and 5, the present embodiment provides a mold for a special-shaped umbrella skirt solid-sealed pole, comprising a mold body 10 and an annular splicing block 20, wherein the mold body 10 comprises a movable mold 101, a static mold 102, a lower core mold plate 103, an upper mold head 104 and a vacuum arc-extinguishing chamber 105, when the movable mold 101 is spliced with the static mold 102, the movable mold 101 and the static mold 102 form a cavity structure 111 with two open ends, the lower core mold plate 103 is arranged at the bottom of the cavity structure 111, the upper mold head 104 is arranged at the top of the cavity structure 111, and the vacuum arc-extinguishing chamber 105 is arranged between the upper mold head 104 and the lower core mold plate 103; when the movable mould 101, the static mould 102, the lower core template 103, the upper mould head 104 and the vacuum arc extinguishing chamber 105 are combined, an injection cavity 11 of the solid sealed polar pole is formed, a plurality of umbrella skirt grooves 112 are formed on the inner side surface of the cavity structure 111 along the axial direction of the solid sealed polar pole, and the second mould cavity and the first mould cavity are arranged in the same structure; the annular split blocks 20 are split and arranged in half along the split faces of the movable mold 101 and the static mold 102, and the annular split blocks 20 are arranged on the umbrella skirt grooves 112 to form an umbrella skirt structure of the solid sealed polar pole.

The special umbrella skirt solid sealed pole in the embodiment can be manufactured by adopting an APG technology (APG technology, namely an epoxy resin automatic pressure gel forming technology (The Automatic Pressure Gelation)) when the mould is subjected to injection molding. Furthermore, the epoxy resin is a hydrophobic material (hydrophobicity: a technical index reflecting water penetration resistance of the material, and is expressed by the volume percentage of the non-permeable part in the sample after water flow with a certain flow rate is sprayed in a specified mode), so that water drops cannot erode the product, and the functions of preventing condensation, snow and stains (dust or animal feces and the like) of the product can be improved by combining the umbrella skirt structure of the solid sealing polar pole, and the product performance of the solid sealing polar pole is correspondingly improved.

As shown in fig. 1, the mold body 10 in this embodiment is formed by splicing a movable mold 101, a static mold 102, a lower core mold plate 103, an upper mold head 104 and a vacuum arc extinguishing chamber 105, and forms an injection cavity 11, and then an epoxy resin material is injected through an injection port on the movable mold 101 or the static mold 102, and then solidified to form a solid-sealed pole, wherein the epoxy resin material has high-voltage insulation performance, and has outstanding advantages of excellent dimensional stability, high mechanical strength and the like, so as to ensure the high-voltage insulation performance of the insulator. Specifically, when the first mold cavity is combined with the second mold cavity, a cavity structure 111 with two open ends is formed, the top opening of the cavity structure 111 is sealed in a matched manner with the upper die head 104, the bottom opening of the cavity structure 111 is sealed in a matched manner with the lower core mold plate 103, the vacuum arc-extinguishing chamber 105 is arranged between the lower core mold plate 103 and the upper die head 104, and the positioning and fixing effects on the vacuum arc-extinguishing chamber 105 are formed, so that the solid-sealed pole with the vacuum arc-extinguishing chamber 105 is injection molded.

Because the vacuum interrupter 105 is a core component of a medium-high voltage power switch, and has the main functions of rapidly extinguishing arcs and suppressing current after the medium-high voltage power switch is powered off through the excellent insulating property of vacuum in the tube, the vacuum interrupter is mainly applied to power transmission and distribution control systems of electric power and is also applied to power distribution systems of metallurgy, mines, petroleum, chemical industry, railway, broadcasting, communication, industrial high-frequency heating and the like, and accidents are avoided. Has the advantages of energy saving, material saving, fire prevention, explosion prevention, small volume, long service life low maintenance cost, reliable operation, no pollution and the like. Thus, with the vacuum interrupter 105, safety can be improved and the performance of the injection molded encapsulated pole product can be improved.

Further, a plurality of umbrella skirt grooves 112 are arranged on the inner side surface of the injection cavity 11 along the axial direction of the solid sealed polar pole, so that when the movable mold 101 and the static mold 102 are combined, a circular umbrella skirt groove 112 is formed; and the umbrella skirt groove 112 is designed to incline downwards, so that the umbrella skirt of the injection-molded solid sealed pole is not easy to accumulate rain and snow, and the like, and the product performance of the solid sealed pole can be ensured.

Further, when the mould of the special-shaped umbrella skirt solid-sealed polar pole is used for injection molding, in order to separate the solid-sealed polar pole from the mould body 10, the annular splicing blocks 20 are designed in the umbrella skirt grooves 112, the inverted inclined planes of the umbrella skirt grooves 112 can be eliminated, and the die drawing inclined planes 204 are designed through the annular splicing blocks 20, so that when the mould is separated, the cushion blocks are separated out at the same time, and then the cushion blocks are separated from the solid-sealed polar pole, so that the structural integrity of the solid-sealed polar pole can be ensured, namely the product quality of the solid-sealed polar pole is ensured, and the production efficiency is ensured.

As shown in fig. 1 and 2, the shed slot 112 in this embodiment includes a plurality of large shed slots 1121 and small shed slots 1122 that are obliquely arranged, and the plurality of large shed slots 1121 and small shed slots 1122 are alternately arranged on the inner side surface of the first mold cavity. The upper top surface of the umbrella skirt groove 112 can be an inclined surface (also can be an inclined surface larger than 20 degrees and adjusted according to actual requirements) inclined at 15-20 degrees, so that the injection molded umbrella skirt flows downwards under the action of gravity after raindrops or dew vertically fall onto a product, and the injection molded material is a hydrophobic material, so that water drops cannot erode the product, a good drainage effect is achieved, and the performance of the product (the solid sealing polar pole) is correspondingly improved.

Further, as shown in fig. 4 and 5, one surface of the annular segment 20 contacting the shed groove 112 in this embodiment is provided as a draft slope 204, and the other surface of the annular segment 20 is provided as an inclined surface 205 inclined upward along the notch of the shed groove 112. The inclined surface 205 may be an inclined surface of 1-5 °, and a chamfer is formed between the inclined surface 205 and the top surface of the shed slot 112 (i.e. an inclined surface of 15-20 °), i.e. a chamfer is formed on the top surface, the side surface and the top surface of the annular splice 20 of the shed slot 112, and the inclined surface 205 is designed so that condensed water drops fall by gravity and do not accumulate on the solid sealing polar pole. The structure design of the mould for the solid sealed pole through the special-shaped umbrella skirt is realized, and the aim of improving the performance of the solid sealed pole by injection molding is fulfilled.

As shown in fig. 1, the lower core mold plate 103 in this embodiment includes a bottom plate 1031 and an inner spiral umbrella skirt die head 1032 disposed on the bottom plate 1031, and the inner spiral umbrella skirt die head 1032 is sleeved in the cavity structure 111. The bottom of the solid sealed pole has a screw thread structure, so that the solid sealed pole is inserted from the bottom opening of the cavity structure 111 through the internal spiral umbrella skirt die head 1032, is sealed with the cavity structure 111 through the bottom plate 1031, and forms a screw thread structure in the bottom of the solid sealed pole after injection molding is completed by utilizing the internal spiral structure on the internal spiral umbrella skirt die.

After injection molding is completed, the lower core template 103 and the solid sealed pole are separated from the movable mold 101 and the static mold 102, and then the solid sealed pole is rotated and separated according to the reverse direction of the threads of the umbrella skirt spiral die head in the mold, so that the mold separation is realized.

As shown in FIG. 1, the annular segment 20 of this embodiment includes a large spacer 201 that mates with a large shed slot 1121 and a small spacer 202 that mates with a small shed slot 1122. Because the shed slot 112 is designed into the structures of the large shed slot 1121 and the small shed slot 1122, the annular blocks 20 with corresponding sizes are needed to be used, namely, the large cushion blocks 201 and the small cushion blocks 202 are designed to be matched for use. Therefore, the solid-sealed polar pole with the large and small sheds is injection molded, the large and small sheds are alternately arranged, and when the height difference between the large and small sheds is more than or equal to 15mm, the insulating property of the solid-sealed polar pole and the insulating property under severe conditions such as rainwater or condensation snow and dirt can be better protected.

As shown in fig. 1, 2 and 4, the edge of the annular segment 20 in this embodiment is symmetrically provided with a plurality of pairs of protrusions 203, and the umbrella skirt groove 112 is provided with a groove 1123 engaged with the protrusions 203. The structural design of the protrusion 203, the first effect is: the sealing plug-in fit (namely, the aim of embedding) can be achieved with the groove 1123 of the umbrella skirt groove 112, so that the positioning and fixing installation of the annular splicing blocks 20 is realized, and the stability of the die installation of the special-shaped umbrella skirt solid-sealed polar pole is ensured; the second effect is: when the die is split, the solid sealed pole is firstly separated from the movable die 101 and the static die 102, and then the annular split blocks 20 are separated through the beating protrusions 203, so that damage to the solid sealed pole can not be caused during die splitting, the quality of products is guaranteed, and the practicability is improved.

Specifically, the fit clearance between the groove 1123 and the protrusion 203 may be designed to be 0.05mm, and the interface between the protrusion 203 and the fit is also designed with a demolding and assembling slope, so that when the device is installed, enough clearance and guiding are provided to enable the protrusion 203 and the groove 1123 to be aligned conveniently, and then the protrusion 203 is pushed to the fit position along the slope position of the groove 1123, so that the device is convenient and fast to assemble.

Further, in this embodiment, the thickness of the annular splice is greater than 6 mm, which is beneficial to operation and heating of the splice, and is not easy to deform during use, thereby improving service life and practicality.

As shown in fig. 1 and 3, in this embodiment, an upper outlet 1051 is disposed between the upper die 104 and the vacuum interrupter 105, and a locking bolt 1052 is disposed between the upper outlet 1051 and the upper die 104. Therefore, the upper wire 1051 is fixed to the upper die 104, for example, by sleeving the upper wire 1051, and the upper wire 1051 is mounted to the upper die 104 by locking the upper wire with the locking bolt 1052, so that the top of the vacuum interrupter 105 is fixed before injection molding. In the mold separation process, the locking bolt 1052 can be removed to separate the upper die head 104 from the upper outlet 1051, so that the upper die head 104 can be reused, and the practicability is improved.

Further, as shown in fig. 1 and 3, in this embodiment, a lower outgoing line 1053 is disposed between the lower core die plate 103 and the vacuum interrupter 105, a movable terminal 1054 is sleeved outside the lower outgoing line 1053 disposed at the lower end of the vacuum interrupter 105, and a spring contact finger 1055 is disposed between the movable terminal 1054 and the lower outgoing line 1053. The lower wire outlet 1053 is installed on the vacuum arc-extinguishing chamber 105 and is sleeved with the spring contact finger 1055 through the movable terminal 1054, so that the whole structure of the vacuum arc-extinguishing chamber 105 is assembled, and is clamped and fixed between the lower core template 103 and the upper die head 104, so that the structure of the vacuum arc-extinguishing chamber 105 is formed by injection molding inside the solid sealed polar pole.

As shown in fig. 3, in this embodiment, a silicone rubber layer 1056 is disposed on the outer side surface of the vacuum arc-extinguishing chamber 105, that is, the vacuum arc-extinguishing chamber 105 is cast after the silicone rubber is coated before injection molding, so as to form protection for the vacuum arc-extinguishing chamber 105, and ensure the performance of the vacuum arc-extinguishing chamber 105 and the quality of injection molding.

In summary, the injection molding and parting processes of the whole mold for the special-shaped umbrella skirt solid-sealed pole post are as follows:

the mould of the special-shaped umbrella skirt solid-sealed polar pole is assembled firstly, a large cushion block 202 and a small cushion block 202 are correspondingly placed in a large umbrella skirt groove 1122, then an upper mould head 104 (comprising an upper outgoing line 1051) and a lower outgoing line 1053 (comprising a movable terminal 1054 and a spring contact finger 1055) are respectively assembled at the upper end and the lower end of a vacuum arc-extinguishing chamber 105, and then the movable mould 101, the static mould 102, the lower core mould plate 103, the upper mould head 104 and the vacuum arc-extinguishing chamber 105 are spliced to form an injection moulding cavity 11 of the solid-sealed polar pole inside, so that the assembly of the mould of the special-shaped umbrella skirt solid-sealed polar pole is completed.

Then, the material is mounted in an injection molding machine for injection molding, the injection molding material is selected to be epoxy resin, and the epoxy resin is poured, heated and cured, and the curing process can be completed in a short time (namely, ten minutes and more).

After curing, the movable mold 101 is opened, the lower core template 103 is opened, and the cured epoxy product and the annular blocks 20 (large and small cushion blocks 202) are taken out of the mold of the special-shaped umbrella skirt solid-sealed polar pole. Firstly, the locking bolt 1052 is taken down, and the upper die head 104 is lifted out of the product body (namely the solid sealed polar pole); the solid sealed polar pole separates the annular splice blocks 20 on the movable mould 102 from the annular splice blocks 20 on the static mould 102 through the mould closing line of the movable mould 102, the annular splice blocks 20 can deviate along with the solid sealed polar pole due to friction force and reverse buckling direction (namely the structure of the inclined surface 205) before epoxy, all the annular splice blocks 20 on the static mould 102 are sequentially taken down from top to bottom, and the protrusion 203 on the annular splice blocks 20 can be slightly knocked in the taking-out process; similarly, all the annular segments 20 of the movable mold 101 are sequentially removed from top to bottom, and the protrusion 203 on the annular segments 20 can be slightly knocked during the removal process. After the completion, fix the solid sealed polar pole, rotate and deviate from the solid sealed polar pole according to the spiral reverse direction of the solid sealed polar pole of special-shaped umbrella skirt in the mould of solid sealed polar pole of spiral umbrella skirt die head 1032, when carrying out rotatory drawing of patterns, need guarantee that rotation direction and screw thread lift angle direction are unanimous, prevent reverse atress and lead to the product to scrap, obtain the solid sealed polar pole of product of moulding plastics like this.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a mould of special-shaped umbrella skirt solid seal utmost point post which characterized in that includes:

the die comprises a die body, a movable die, a static die, a lower core die plate, an upper die head and a vacuum arc-extinguishing chamber, wherein when the movable die is combined with the static die, a cavity structure with two open ends is formed inside the movable die and the static die, the lower core die plate is arranged at the bottom of the cavity structure, the upper die head is arranged at the top of the cavity structure, the vacuum arc-extinguishing chamber is arranged between the upper die head and the lower core die plate, and a plurality of umbrella skirt grooves are formed in the inner side surface of the cavity structure along the axial direction of the solid-sealed polar pole;

when the movable mould, the static mould, the lower core template, the upper mould head and the vacuum arc-extinguishing chamber are spliced, an injection cavity for fixedly sealing the pole is formed; and

The annular splicing blocks are arranged in a half-half splicing mode along the parting faces of the movable die and the static die, and the annular splicing blocks are arranged on the umbrella skirt grooves to form an umbrella skirt structure of the solid-sealed polar pole.

2. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, wherein: the lower core die plate comprises a bottom plate and an inner spiral umbrella skirt die head arranged on the bottom plate, and the inner spiral umbrella skirt die head is sleeved in the cavity structure.

3. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, wherein: the cavity structure comprises a first die cavity and a second die cavity spliced with the first die cavity, the umbrella skirt groove comprises a plurality of large umbrella skirt grooves and small umbrella skirt grooves which are obliquely arranged, and the large umbrella skirt grooves and the small umbrella skirt grooves are alternately arranged on the inner side surface of the first die cavity.

4. A mould for a profiled shed solid sealing pole according to claim 3, characterized in that: the annular splicing block comprises a large cushion block matched with the large umbrella skirt groove and a small cushion block matched with the small umbrella skirt groove.

5. The die for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1 or 4, wherein: the edge of the annular splicing block is symmetrically provided with a plurality of pairs of protrusions, and the umbrella skirt groove is provided with grooves which are embedded with the protrusions.

6. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, wherein: one surface of the annular splicing block, which is contacted with the umbrella skirt groove, is set to be a pattern drawing inclined surface, and the other surface of the annular splicing block is set to be an inclined surface which is inclined upwards along the notch of the umbrella skirt groove.

7. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, 4 or 6, wherein: the thickness of the annular segments is greater than 6 mm.

8. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, wherein: an upper outgoing line is arranged between the upper die head and the vacuum arc-extinguishing chamber, and a locking bolt is arranged between the upper outgoing line and the upper die head.

9. The mold for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1, wherein: the lower core die plate is provided with a lower outgoing line between the lower core die plate and the vacuum arc-extinguishing chamber, the lower outgoing line is arranged at the lower end of the vacuum arc-extinguishing chamber, a movable terminal is sleeved outside the lower outgoing line, and a spring contact finger is arranged between the movable terminal and the lower outgoing line.

10. The die for the special-shaped umbrella skirt solid-sealed polar pole according to claim 1 or 8, wherein: and a silicon rubber layer is arranged on the outer side surface of the vacuum arc extinguishing chamber.