CN110653977B - Column type insulator casting mold - Google Patents
Column type insulator casting mold Download PDFInfo
- Publication number
- CN110653977B CN110653977B CN201811558112.3A CN201811558112A CN110653977B CN 110653977 B CN110653977 B CN 110653977B CN 201811558112 A CN201811558112 A CN 201811558112A CN 110653977 B CN110653977 B CN 110653977B
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- cavity
- gate
- pouring
- pouring gate
- exhaust groove
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- 239000012212 insulator Substances 0.000 title claims abstract description 32
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000007547 defect Effects 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 3
- 230000007704 transition Effects 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 description 10
- 229920000647 polyepoxide Polymers 0.000 description 10
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010125 resin casting Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/26—Moulds or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3412—Insulators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a column type insulator casting mold. The mold comprises a mold body for combining a cavity, wherein a sprue communicated with the cavity is arranged on the mold body, and an exhaust groove communicated with the sprue is arranged at the communicating part of the sprue and the cavity on the cavity wall of the cavity. The mould is provided with a pouring gate communicated with the cavity, an exhaust groove communicated with the pouring gate is formed in the cavity wall of the cavity at the communication part of the pouring gate and the cavity, gas gathered at the communication part of the pouring gate and the cavity can be timely exhausted from the pouring gate through the exhaust groove during pouring, and when the gas is solidified, pouring materials at the pouring gate can timely perform feeding on the cavity of the mould, so that the problem of shrinkage or precipitation defects on the surface below the pouring gate of the column insulator is avoided.
Description
Technical Field
The invention relates to a column type insulator casting mold.
Background
The 1100kv column insulator is composed of a metal insert and an epoxy resin system, a large number of epoxy resin and metal joint surfaces exist, and the difference of the thermal expansion coefficients of the metal and the epoxy resin has an important influence on the interface joint of the metal and the epoxy resin, thereby influencing various performances of the column insulator.
In the existing casting mold, for example, chinese patent with publication number CN203739090U, publication date 2014: 07/30 discloses a seamless insulator casting mold, which adopts a vertical casting method to perform casting, wherein a casting port and an exhaust port are respectively arranged at the top of the mold, according to an epoxy resin casting process, epoxy resin is injected into an inner mold cavity through the casting port, and original gas in the mold cavity is exhausted through the exhaust port. However, when the air remained in the mold cavity is not discharged from the gate in time when the surface below the gate of the post insulator is poured, the epoxy resin material at the gate is affected to timely feeding the mold cavity, and thus the defect of shrinkage or precipitation is easily caused on the surface below the gate of the post insulator.
Moreover, the seamless insulator casting mold adopts a vertical casting mode, and at the moment, due to the different shrinkage performances of the metal insert and the epoxy resin system and the influence of the shrinkage gravity of the epoxy resin material, micro defects are easily generated on the bonding surface of the epoxy resin material and the metal electrode.
Disclosure of Invention
The invention aims to provide a column insulator pouring mold, which aims to solve the problem that in the prior art, gas is easy to gather at a communication part between a pouring gate and a cavity to influence feeding during pouring.
In order to achieve the purpose, the technical scheme of the column insulator casting mold is as follows:
the column type insulator pouring mold comprises a mold body used for combining a cavity, a pouring gate communicated with the cavity is arranged on the mold body, an exhaust groove is formed in the communicated part of the pouring gate and the cavity on the cavity wall of the cavity, and one end, close to the pouring gate, of the exhaust groove is communicated with the pouring gate.
The invention has the beneficial effects that: the mould is provided with a pouring gate communicated with the cavity, and an exhaust groove communicated with the pouring gate is arranged at the communication part of the pouring gate and the cavity on the cavity wall of the cavity.
Furthermore, the groove bottom of the exhaust groove is in an inclined state relative to the radial direction of the gate, and the depth of the exhaust groove on the side close to the gate is larger than that of the exhaust groove on the side far away from the gate, so that the gas can move from the side, far away from the gate, of the exhaust groove to the side, close to the gate, of the exhaust groove and then be exhausted from the gate.
Furthermore, the groove bottom of the exhaust groove and the inner wall of the sprue are in smooth transition, so that the gas flows more stably in the exhaust groove, and the gas is conveniently discharged.
Further, the gas in the cavity is gathered at the maximum radial dimension of the cavity, and the gate is arranged at the maximum radial dimension of the cavity for facilitating the discharge of the gas at the maximum radial dimension.
Furthermore, the cavity has an axial direction consistent with the axial extension direction of the column insulator, the bottom of the die body is respectively provided with a lower supporting structure and a higher supporting structure at two axial ends, the lower supporting structure and the higher supporting structure are used for enabling the die to be in an inclined state, and the sprue is arranged at one side close to the higher supporting structure; since the gas in the cavity is gathered at a higher position in the cavity, the gate is arranged at one side close to the higher support structure, and the gas gathered at the higher position in the cavity can be smoothly discharged.
Furthermore, the exhaust groove is arranged on one side, close to the lower supporting structure, of the pouring gate, so that the gas exhaust direction in the exhaust groove of the pouring gate does not form front impact with the pouring of rubber in the pouring gate, the pouring of the poured rubber cannot block the exhaust of the gas in the exhaust groove, and the gas exhaust is facilitated.
Furthermore, the mould body comprises a mould main body, a port is arranged on one side of the mould main body with a higher supporting structure, an end cover is detachably plugged at the port, a gas collection concave cavity is arranged on the side face, which is used for being in fit with the port edge of the port, of the end cover and/or on the port edge of the port, and the gas collection concave cavity is positioned at the highest position of the cavity; an accommodating cavity is formed for gas in the cavity, so that the gas collection cavity is convenient to arrange, and when the pouring material enters the gas collection cavity, the pouring material in the gas collection cavity can be conveniently removed.
Furthermore, the size of a communication opening between the gas collection concave cavity and the cavity is smaller than that of the gas collection concave cavity; because it is comparatively thick to water the material, set the size of intercommunication mouth to be less than the size of gas collection cavity and can avoid watering the material and get into the gas storage space that the gas collection cavity was occupied to the gas collection cavity.
Further, the communication port is a gap communicated with the gas collection concave cavity; can be better avoid watering and get into in the gas collection recess through the gap.
Drawings
FIG. 1 is a schematic structural diagram of a casting mold for column insulators according to the present invention;
fig. 2 is a schematic view of the working state of the column insulator casting mold in fig. 1;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
In the figure: 1-a low pressure side die body, 11-a first flange, 12-a first end cover, 2-a high pressure side die body, 21-a second flange, 22-a second end cover, 3-a sprue, 31-a first sprue die body, 32-a second sprue die body, 4-an exhaust groove, 5-a lower support structure, 6-a higher support structure, 7-a gas collection cavity, 8-a high pressure side insert, 9-a communication port and 10-a low pressure side insert.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The concrete embodiment of the column insulator pouring mold of the invention, as shown in fig. 1, comprises a mold body for combining a cavity, the mold body comprises a low-pressure side mold body 1 and a high-pressure side mold body 2, the low-pressure side mold body 1 is provided with a first flange 11, and the high-pressure side mold body 2 is provided with a second flange 21. The low pressure side die body 1 and the high pressure side die body 2 are connected in a sealing mode through bolts penetrating through the first flange 11 and the second flange 21.
The last runner 3 that is provided with the die cavity intercommunication of the mould body, runner 3 set up in the junction of the low pressure side mould body 1 and the high pressure side mould body 2 and with low pressure side mould 1 and high pressure side mould 2 fixed connection, runner 3 includes first runner die body 31 and second runner die body 32 to, first runner die body 31 passes through bolted connection together with second runner die body 32, in other embodiments, the runner structure sets up as an organic whole.
The communicating part of runner 3 and die cavity is equipped with on the chamber wall of die cavity and is equipped with the exhaust duct 4 that communicates with runner 3, when pouring, the gathering can in time be discharged from runner 3 through exhaust duct 4 at runner 3 and die cavity communicating part's gas, when the solidification, the material of pouring of runner 3 department can in time carry out the feeding to the mould die cavity, avoid appearing shrink or deposit the defect in column insulator runner 3 below surface, the material of pouring is epoxy, in other embodiments, the material of pouring still can be plastics.
In the pouring process, the gas in the cavity moves from bottom to top, in order to facilitate the discharge of the gas, the groove bottom of the exhaust groove 4 is inclined relative to the radial direction of the gate 3, and the depth of the exhaust groove 4 close to the gate 3 is larger than that of the exhaust groove far away from the gate 3. In order to further improve the smoothness of gas discharge, the groove bottom of the exhaust groove 4 and the inner wall of the gate 3 are in smooth transition.
In the process of pouring, gas is mainly gathered at the position with the largest radial dimension of the cavity, and the pouring gate 3 is arranged at the position with the largest radial dimension of the cavity, so that the gas generated in the process of pouring can be discharged.
The die cavity has the axial unanimous with the axis extending direction of column insulator, and the bottom of the mould body is equipped with lower bearing structure 5 and higher bearing structure 6 respectively at axial both ends, and the radial outside welding of the one end of keeping away from low pressure side mould body 1 of the high pressure side mould body 2 has the ring flange, and the ring flange lies in the lower extreme structure of the mould body and constitutes lower bearing structure 5 to, still be provided with suspended structure on the ring flange, in other embodiments, lower bearing structure is for the landing leg that can support high pressure side mould body 2. The upper support structure 6 is a leg bolted to the first flange 11 of the low pressure side die body 1, the leg being plate-shaped, in other embodiments the leg is cylindrical. In order to increase the support strength, a stiffener plate is also arranged between the lower support structure 5 and the upper support structure 6.
The exhaust groove 4 is arranged on one side of the pouring gate 3 close to the lower supporting structure 5, so that the pouring gate 3 can enable gas in the cavity to flow from the lower position to the higher position of the mold cavity more easily, and finally exhaust the gas out of the cavity.
In order to facilitate the evacuation of the gas, the gate 3 is arranged on the side close to the higher support structure 6, but in other embodiments, the gate may not be arranged on the side close to the higher support structure, but the gas outlet is arranged on the side close to the higher support structure.
The mould body includes the mould main part, and the mould main part is equipped with the port in one side of higher bearing structure 6, and the removable shutoff of port has the end cover, and is specific, and the low pressure side mould body 1 of mould main part sets up first port in one side of higher bearing structure 6, and the removable shutoff of first port has first end cover 12 to, be provided with the seal ring groove on the first end cover 12, be provided with the sealing washer in the seal ring groove for realize the sealed between first end cover 12 and the low pressure side mould body 1. In other embodiments, a seal ring groove is provided on the rim of the port of the low pressure side die body 1, and a seal ring is provided in the seal ring groove. The port is a first port, the end cover is a first end cover 12, a low-pressure side insert 10 is arranged on one side, facing the cavity, of the first end cover 12, and a hanging structure is arranged on one side, away from the cavity, of the first end cover 12. The high-pressure side die body 2 of the die body is provided with a second port on one side of the lower supporting structure 5, the second port is detachably plugged with a second end cover 22, and the second end cover 22 is provided with a high-pressure side insert 8.
The first end cover 12 is used for being provided with the gas collection cavity 7 on the side face matched with the edge of the first port in an attaching mode and on the edge of the port, the gas collection cavity 7 is located at the highest position of the cavity, so that gas in the cavity can flow into the gas collection cavity 7 from the cavity conveniently, in other embodiments, the gas collection cavity is only arranged on the side face matched with the edge of the port in an attaching mode, or the gas collection cavity is only arranged on the edge of the port.
The gas collection concave cavity 7 is communicated with the cavity through a communication port 9, and the size of the communication port 9 is smaller than that of the gas collection concave cavity 7, so that the gas collection concave cavity 7 can store gas conveniently. Specifically, the gas collection cavity 7 is formed by a groove arranged on the end cover and the port edge, and the communication port 9 is a gap communicated with the groove, so that the structural form of the gas collection cavity 7 and the structural form of the communication port 9 are simple.
When the die is used, the inner wall of the cavity of the die body is wiped clean, a release agent is sprayed, then the low-pressure side insert 10 and the high-pressure side insert 8 are installed in the cavity of the die body, and the die is assembled together; and then sending the assembled mould body into a curing oven for preheating the mould, sending the preheated mould into a vacuum pouring box of pouring equipment, and adopting a horizontal pouring mode. When horizontal pouring is adopted, the insulating property of the inserts on the end covers at the left end and the right end of the die is critical, and the influence of the gravity action of pouring materials on the insulating property of the inserts on the end covers at the left end and the right end of the die can be reduced as much as possible by adopting the horizontal pouring. And, place the mould into the tilt state, runner 3 sets up in the maximum diameter department of die cavity, and runner 3 sets up in the one side that is close to higher bearing structure 6, will handle the pouring material that accomplishes according to certain technological requirement and pour into the die cavity of the mould body through runner 3 according to certain speed under the vacuum state, when pouring material is poured into about 80% of total weight, suitably reduce pouring speed, thereby can make the gas in the die cavity of mould discharge from runner 3 smoothly through exhaust duct 4, and, gas collection cavity 7 is located the highest point of die cavity, also can make things convenient for the gas in the die cavity to discharge to gas collection cavity 7 through intercommunication mouth 9. And then, sending the cast column insulator mold into a curing furnace for curing, opening the mold after curing is completed, and taking out the column insulator.
In the present embodiment, the groove bottom of the exhaust groove is inclined in the radial direction with respect to the gate, and in other embodiments, the groove bottom of the exhaust groove is formed in a stepped shape, the upper end of the stepped groove bottom is located on the side close to the gate, and the lower end of the stepped groove bottom is located on the side far from the gate.
In the present embodiment, the groove bottom of the exhaust groove and the inner wall of the gate are in smooth transition, and in other embodiments, the groove bottom of the exhaust groove and the inner wall of the gate may be in chamfer transition.
In this embodiment, the vent grooves are used for horizontal casting, and in other embodiments, the vent grooves are used for vertical casting.
Claims (8)
1. Column type insulator casting mold, including the mould body that is used for making up out the die cavity, be equipped with the runner with the die cavity intercommunication on the mould body, its characterized in that: an exhaust groove is formed in the cavity wall of the cavity at the communication part of the pouring gate and the cavity, and one end, close to the pouring gate, of the exhaust groove is communicated with the pouring gate; the groove bottom of the exhaust groove is inclined relative to the radial direction of the gate, and the depth of the exhaust groove close to the gate is larger than that of the exhaust groove far away from the gate; the notch of the exhaust groove faces the cavity and is communicated with the cavity; during pouring, gas gathered at the communicating part of the pouring gate and the cavity can be discharged from the pouring gate in time through the exhaust groove, and during solidification, the gas gathered at the communicating part of the pouring gate and the cavity cannot interfere with feeding of the cavity, so that the material poured at the pouring gate can feed the cavity of the mold in time, and the problem of shrinkage or precipitation defects on the surface below the pouring gate of the column insulator is avoided.
2. The column insulator casting mold according to claim 1, wherein: and the groove bottom of the exhaust groove is in smooth transition with the inner wall of the sprue.
3. The column insulator casting mold according to claim 1 or 2, wherein: the gate is arranged where the radial dimension of the cavity is largest.
4. The column insulator casting mold according to claim 1 or 2, wherein: the die cavity is provided with an axial direction consistent with the axial extension direction of the column insulator, the bottom of the die body is respectively provided with a lower supporting structure and a higher supporting structure at two axial ends, the lower supporting structure and the higher supporting structure are used for enabling the die to be in an inclined state, and the pouring gate is arranged on one side close to the higher supporting structure.
5. The column insulator casting mold according to claim 4, wherein: the vent slot is disposed on a side of the gate proximate the lower support structure.
6. The column insulator casting mold according to claim 4, wherein: the mould body comprises a mould main body, a port is formed in one side of the mould main body, the port is detachably plugged with an end cover, the end cover is used for being attached to the side face matched with the port edge of the port in a fitting mode and/or a gas collection concave cavity is formed in the port edge of the port, and the gas collection concave cavity is located at the highest position of the cavity.
7. The column insulator casting mold according to claim 6, wherein: and the size of a communication opening between the gas collection concave cavity and the cavity is smaller than that of the gas collection concave cavity.
8. The column insulator casting mold according to claim 7, wherein: the communicating opening is a gap communicated with the gas collecting concave cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558112.3A CN110653977B (en) | 2018-12-19 | 2018-12-19 | Column type insulator casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558112.3A CN110653977B (en) | 2018-12-19 | 2018-12-19 | Column type insulator casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110653977A CN110653977A (en) | 2020-01-07 |
| CN110653977B true CN110653977B (en) | 2021-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811558112.3A Active CN110653977B (en) | 2018-12-19 | 2018-12-19 | Column type insulator casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110653977B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4401841A (en) * | 1981-01-23 | 1983-08-30 | Meyer Jeffry R | Explosion resistant insulator and method of making same |
| US5484564A (en) * | 1992-12-28 | 1996-01-16 | Ngk Insulators, Ltd. | Method for manufacturing a long non-ceramic insulator in mold longitudinally shorter than the insulator |
| US5551502A (en) * | 1994-05-13 | 1996-09-03 | Mazda Motor Corporation | Pressurizing control method and pressurizing control system for low-pressure casting |
| CN201552704U (en) * | 2009-10-09 | 2010-08-18 | 河南平高电气股份有限公司 | Extra-high voltage insulator pouring mould |
| CN201673744U (en) * | 2010-04-06 | 2010-12-15 | 江苏祥源电气设备有限公司 | Insulator molding mould |
| CN203739090U (en) * | 2014-03-06 | 2014-07-30 | 上海固缘电力科技有限公司 | Seamless insulator casting mold |
| CN104015307A (en) * | 2014-06-11 | 2014-09-03 | 江苏祥源电气设备有限公司 | High-coaxiality composite insulator injection mold |
| CN205920835U (en) * | 2016-08-31 | 2017-02-01 | 广州华荣中天模具有限公司 | Lightning -proof insulator column type die mould |
| CN107521015A (en) * | 2017-08-10 | 2017-12-29 | 南方电网科学研究院有限责任公司 | Manufacturing method and manufacturing device of supporting insulator |
| CN107856238A (en) * | 2016-09-22 | 2018-03-30 | 河南平高电气股份有限公司 | A kind of insulator pouring mould and its external mold and foreign side's molding part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6739858B2 (en) * | 2002-08-29 | 2004-05-25 | Graham Packaging Company, L.P. | Insulated apparatus for injecting and removing compressed air from a cooled mold cavity |
-
2018
- 2018-12-19 CN CN201811558112.3A patent/CN110653977B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4401841A (en) * | 1981-01-23 | 1983-08-30 | Meyer Jeffry R | Explosion resistant insulator and method of making same |
| US5484564A (en) * | 1992-12-28 | 1996-01-16 | Ngk Insulators, Ltd. | Method for manufacturing a long non-ceramic insulator in mold longitudinally shorter than the insulator |
| US5551502A (en) * | 1994-05-13 | 1996-09-03 | Mazda Motor Corporation | Pressurizing control method and pressurizing control system for low-pressure casting |
| CN201552704U (en) * | 2009-10-09 | 2010-08-18 | 河南平高电气股份有限公司 | Extra-high voltage insulator pouring mould |
| CN201673744U (en) * | 2010-04-06 | 2010-12-15 | 江苏祥源电气设备有限公司 | Insulator molding mould |
| CN203739090U (en) * | 2014-03-06 | 2014-07-30 | 上海固缘电力科技有限公司 | Seamless insulator casting mold |
| CN104015307A (en) * | 2014-06-11 | 2014-09-03 | 江苏祥源电气设备有限公司 | High-coaxiality composite insulator injection mold |
| CN205920835U (en) * | 2016-08-31 | 2017-02-01 | 广州华荣中天模具有限公司 | Lightning -proof insulator column type die mould |
| CN107856238A (en) * | 2016-09-22 | 2018-03-30 | 河南平高电气股份有限公司 | A kind of insulator pouring mould and its external mold and foreign side's molding part |
| CN107521015A (en) * | 2017-08-10 | 2017-12-29 | 南方电网科学研究院有限责任公司 | Manufacturing method and manufacturing device of supporting insulator |
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| Publication number | Publication date |
|---|---|
| CN110653977A (en) | 2020-01-07 |
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