CN105328920A - Dipping molding device and method for insulating pull rods - Google Patents
Dipping molding device and method for insulating pull rods Download PDFInfo
- Publication number
- CN105328920A CN105328920A CN201510891451.3A CN201510891451A CN105328920A CN 105328920 A CN105328920 A CN 105328920A CN 201510891451 A CN201510891451 A CN 201510891451A CN 105328920 A CN105328920 A CN 105328920A
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- Prior art keywords
- shaping
- mould
- insulated tension
- tension pole
- tank
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Classifications
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
Abstract
The invention relates to a dipping molding device for insulating pull rods. The dipping molding device comprises a plurality of molding dies, a molding tank, a plurality of die material channels and a material supply unit, wherein the molding dies comprise support bases, core dies positioned on the support bases and molding out dies arranged outside the core dies in a sleeving manner; the molding tank is used for accommodating the molding dies; the die material channels are in one-to-one correspondence with the molding dies and are used for supplying materials to the corresponding molding dies; and the material supply unit is used for supplying materials to the die material channels. The dipping molding device for the insulating pull rods has the advantages that due to the adoption of the novel molding dies, insulating tube blanks obtained do not have the defects of burrs and the like, the surfaces of the insulating tube blanks are smooth, and machining does not need to be carried out again to remove burrs; and meanwhile, dipping operation can be simultaneously carried out on the plurality of molding dies in the molding tank, so that a plurality of insulating pull rods can be prepared at a time, the production cost is reduced, and the production efficiency is improved. The invention further provides a dipping molding method for insulating pull rods.
Description
Technical field
The present invention relates to insulated tension pole technical field, particularly relate to a kind of dip forming device and method of insulated tension pole.
Background technology
Insulated tension pole is the vitals in porcelain knob, pot type, GIS, PASS switchgear, plays the effect of electric insulation and transmission mechanical force.
At present, the manufacturing equipment of insulated tension pole generally comprises dip forming device, regelate device, machining set-up etc., and wherein dip forming device comprises mould and feed unit.Accordingly, the preparation technology of insulated tension pole generally adopts vacuum impregnation technique, comprises dip forming stage, regelate stage, machined stage.Be in particular, vacuum drying is carried out to fibrous material, then the die cavity of mould is vacuumized, under vacuum conditions impregnating resin, and pressurization keeps a period of time to make dipping more abundant, is then cured forming operation to mould.After to be formed, the demoulding is also carried out regelate and is obtained insulation pipe pipe, after carrying out machined, obtains insulation tube, finally insulation tube and joint bonding is obtained insulated tension pole insulation pipe pipe.Must carry out a large amount of machined to insulation base pipe by this method, and can only vacuumize a shaping mold cavity at every turn, once can only prepare an insulated tension pole, manufacture craft is complicated, causes production cost high, wastes energy and production efficiency is low.
Summary of the invention
Based on this, be necessary the problem high for existing insulated tension pole preparation facilities production cost, production efficiency is low, the dip forming device of the insulated tension pole that a kind of production cost is low, production efficiency is high is provided.
A dip forming device for insulated tension pole, comprising:
Some shaping moulds, described shaping mould comprises supporting seat, the core be positioned on described supporting seat, the shaping external mold be enclosed within outside described core;
Shaping tank, for accommodating some described shaping moulds;
Some mould material passages, described mould material passage and described shaping mould one_to_one corresponding, for giving the described shaping mould feed of its correspondence;
And feed unit, for some described mould material passage feed.
The dip forming device of above-mentioned insulated tension pole, adopts novel shaping mould, and the insulation pipe pipe obtained there will not be-defect such as burr, its smooth surface, machined can remove burr again; Some shaping moulds are carried out dip operation in shaping tank simultaneously simultaneously, can the some insulated tension poles of one time to produce, reduce production cost, improve production efficiency.
Wherein in an embodiment, described shaping mould also comprises the liquid level sensor be arranged on described shaping external mold; The dip forming device of described insulated tension pole also comprises Liquid level module, and when the liquid level that the liquid level sensor of described shaping mould detects in this shaping mould is in predetermined altitude, described Liquid level module closes mould material passage corresponding to this shaping mould.Like this can the insulated tension pole of the some different sizes of one time to produce, reduce further production cost, improve production efficiency.
Wherein in an embodiment, described shaping mould also comprises for preventing impregnant from draining to sealing ring in described core, and described sealing ring is arranged on described supporting seat.
Wherein in an embodiment, the mould material passage that described shaping mould is corresponding with it removably connects.
Wherein in an embodiment, the dip forming device of described insulated tension pole also comprises the curing mechanism for being cured forming operation to described shaping mould; Described curing mechanism comprises independent of the solidification tank outside described shaping tank.
Wherein in an embodiment, the dip forming device of described insulated tension pole also comprises the transport channel for transporting described shaping mould; Described transport channel is connected between described shaping tank and described solidification tank.
Wherein in an embodiment, described supporting seat is provided with the roller for mobile described shaping mould.
Wherein in an embodiment, described feed unit comprise for batch mixing mixing tank, with described batch mixing tank connected batch mixing vacuum device and the batch mixing temperature control mechanism for controlling temperature in described mixing tank.
Wherein in an embodiment, the dip forming device of described insulated tension pole also comprises the shaping temperature control mechanism for controlling temperature in described shaping tank and the pressure control mechanism for controlling pressure in described shaping tank.
Wherein in an embodiment, described pressure control mechanism comprises the shaping pressurized mechanism vacuumizing clamp mechanism and pressurize to described shaping tank vacuumized described shaping tank.
Present invention also offers a kind of impregnation forming method of insulated tension pole.
An impregnation forming method for insulated tension pole, adopts the dip forming device of insulated tension pole provided by the present invention, comprises the steps:
Coiling insulation tube embryonic tube on core, by shaping outer die casing outside described insulation tube embryonic tube;
Control shaping tank and reach feeding conditions, impregnant is delivered in shaping mould from feed unit by mould material passage, carries out feed operation;
To be fed complete after, carry out dip operation;
To be impregnated complete after, be cured forming operation.
The impregnation forming method of above-mentioned insulated tension pole, adopts the dip forming device of insulated tension pole provided by the present invention, follow-up can without machined, can the some insulated tension poles of one time to produce, reduce production cost, improve production efficiency.
Wherein in an embodiment, described feed operation comprises the steps: when the liquid level in shaping mould is in predetermined altitude, closes the mould material passage that this shaping mould is corresponding.
Wherein in an embodiment, the gap of described shaping external mold and described insulation tube embryonic tube is 0.1 ~ 2mm.
Wherein in an embodiment, described feeding conditions is: the air pressure in described shaping tank is 50 ~ 300Pa, and the temperature in described shaping tank is 40 ~ 80 DEG C.
Wherein in an embodiment, the temperature of described impregnant is 40 ~ 80 DEG C.
Wherein in an embodiment, described dip operation is: the air pressure controlling described shaping tank is 0.4 ~ 1.0MPa, and dip time is 2 ~ 8h.
Accompanying drawing explanation
Fig. 1 is the structural representation of the dip forming device of the insulated tension pole of one embodiment of the invention.
Fig. 2 is the shaping mould of dip forming device and the structural representation of its corresponding mould material passage of insulated tension pole in Fig. 1.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1, the dip forming device 100 of the insulated tension pole of one embodiment of the invention, comprises some shaping moulds 110, shaping tank 120, some mould material passages 130 and feed unit 140.
Wherein, the effect of shaping tank 120 is the some shaping moulds 110 of collecting, and that is, some shaping moulds 110 are placed in shaping tank 120, concentrates and carries out dip forming operation, can prepare multiple insulated tension pole so simultaneously in shaping tank 120.
In the present embodiment, the dip forming device 100 of insulated tension pole also comprises the shaping temperature control mechanism 180 for controlling temperature in shaping tank 120 and the pressure control mechanism 190 for controlling pressure in shaping tank 120.Particularly, pressure control mechanism 190 comprises the shaping pressurized mechanism 192 vacuumizing clamp mechanism 191 and pressurize to shaping tank 120 vacuumized shaping tank 120.More specifically, clamp mechanism 191 is vacuumized for vavuum pump.
Composition graphs 1 is see Fig. 2, and in the present invention, the effect of shaping mould 110 is to provide impregnant varnished tube embryonic tube 9 and the place making resin solidification shaping.Shaping mould 110 comprises supporting seat 111, the core 112 be positioned on supporting seat 111, the shaping external mold 113 be enclosed within outside core 112.Shaping mold cavity is formed between shaping external mold 113 and core 112, and impregnant is varnished tube embryonic tube 9 also curing molding in shaping mold cavity.
In the present embodiment, shaping mould 110 is vertical setting, and supporting seat 111 is positioned at the bottom of shaping mould 110, and it has bulge-structure.Core 112 is hollow tubular, and the bulge-structure that the bottom of core 112 is enclosed within supporting seat 111 is fixed with bulge-structure.
In the present embodiment, shaping mould 110 also comprises for preventing impregnant from draining to sealing ring 115 in core 112, and sealing ring 115 is arranged on supporting seat 111.Can impregnant be saved like this, avoid impregnant to waste.More specifically, sealing ring 115 is enclosed within the outer ring of the bulge-structure of supporting seat 111.
In the present embodiment, the supporting seat 111 of shaping mould 110 is provided with the roller (not shown) for being moved into pattern 110.Shaping mould 110 is facilitated to move like this.
In the present embodiment, shaping mould 110 also comprises the liquid level sensor 114 be arranged on shaping external mold 113, and liquid level sensor 114 can be detected as the liquid level in pattern 110.Accordingly, the dip forming device 100 of insulated tension pole also comprises Liquid level module (not shown) and some valve blocks 116, Liquid level module, based on the Detection Information of the liquid level sensor 114 of shaping mould 110, controls closedown or the conducting of the mould material passage 130 of its correspondence by the closedown of control valve block 116 or conducting.When needing to prepare the different insulated tension pole of plurality of specifications simultaneously, liquid level sensor 114 detects the liquid level in the shaping mould 110 at its place, when the liquid level that the liquid level sensor 114 of shaping mould 110 detects in this shaping mould 110 is in predetermined altitude, Liquid level module closes the mould material passage 130 of this shaping mould 110 correspondence by valve block 116, stops impregnant supply; Thus realize adding the different insulated tension pole of work post specification, can also resin be saved in addition, reduce production cost. simultaneously
Wherein, mould material passage 130 and valve block 116 and shaping mould 110 one_to_one corresponding, its effect controls to shaping mould 110 feed of its correspondence.In the present embodiment, mould material passage 130 is connected to the bottom of shaping mould 110 by valve block 116.
In the present embodiment, conveniently shaping mould 110 moves, and the mould material passage 130 that shaping mould 110 is corresponding with it removably connects.Conveniently mould material passage 130 can be disassembled from shaping mould 110 like this, thus fast shaping mould 110 can be moved to other place.
See Fig. 1, the effect of feed unit 140 is to some mould material passage 130 feed.Particularly, feed unit 140 comprises for the mixing tank 141 of batch mixing, the batch mixing vacuum device 142 be connected with mixing tank 141 and the batch mixing temperature control mechanism 143 for controlling temperature in mixing tank 141.The delivery outlet of mixing tank 141 is connected to mould material passage 130, thus is delivered in shaping mould 110 by the impregnant mixed by mould material passage 130.
In the present embodiment, the dip forming device 100 of insulated tension pole also comprises the curing mechanism (not shown) for being cured forming operation to described shaping mould; Curing mechanism comprises independent of the solidification tank (not shown) outside shaping tank 120.That is, after fully flooding, shaping mould 110 is moved to from shaping tank 120 in solidification tank, in solidification tank, is cured forming operation.
Transporting to further facilitate shaping mould 110, between shaping tank 120 and solidification tank, being also provided with transport channel (not shown), in other words, transport channel is connected between shaping tank 120 and solidification tank.Shaping mould 110 can be transported in solidification tank by transport channel from shaping tank 120.
Certainly, the present invention does not limit to said structure, according to actual conditions, solidification tank can not also be set, curing operation carries out in shaping tank 120, also namely shaping mould 110 need not shift out shaping tank 120, after fully flooding, directly in shaping tank 120, shaping mould 110 is heated, thus make the resin solidification in shaping mould 110 shaping.
The dip forming device of insulated tension pole provided by the present invention, adopts novel shaping mould, and the insulation pipe pipe obtained there will not be the defects such as burr, its smooth surface, again machined can remove burr; Some shaping moulds are carried out dip operation in shaping tank simultaneously simultaneously, can the some insulated tension poles of one time to produce, reduce production cost, improve production efficiency.
Present invention also offers a kind of impregnation forming method of insulated tension pole, the impregnation forming method of this insulated tension pole adopts the dip forming device of insulated tension pole provided by the present invention.To facilitate understanding of the description, label is below only the step being explained impregnation forming method with reference to accompanying drawing, not to method Composition of contents restriction of the present invention.The impregnation forming method of this insulated tension pole comprises the steps:
S1, on core 112 coiling insulation tube embryonic tube 9, shaping external mold 113 is enclosed within outside insulation tube embryonic tube 9;
S2, control shaping tank 120 and reach feeding conditions, impregnant is delivered in shaping mould 110 from feed unit 140 by mould material passage 130, carries out feed operation;
S3, to be fed complete after, carry out dip operation;
S4, to be impregnated complete after, be cured forming operation.
Wherein, in step S1, the winding method of insulation tube embryonic tube 9 adopts dry method winding process, is certainly not limited to dry method winding process.
Particularly, after being enclosed within by shaping external mold 113 outside insulation tube embryonic tube 9, shaping external mold 113 is 0.1 ~ 2mm with the gap of insulation tube embryonic tube 9.Like this after resin-dipping is shaping, make shaping insulation tube outer wall smooth, and do not need to carry out the outer thicker resin bed of machined removal insulation tube embryonic tube 9 again; Corrosion-resisting function can also be played in addition.
Wherein, in step S2, controlling the object that shaping tank 120 reaches feeding conditions is for feed provides convenient.Particularly, feeding conditions is: the air pressure in shaping tank 120 is 50 ~ 300Pa, and the temperature in shaping tank 120 is 40 ~ 80 DEG C.But be not limited to above-mentioned condition, those skilled in the art can regulate feeding conditions according to actual conditions.
More specifically, start shaping temperature control mechanism 180, make the temperature in shaping tank 120 keep 80 DEG C; Open and shapingly vacuumize clamp mechanism 191, shaping tank 120 is vacuumized, makes vacuum to 50Pa, thus reach feeding conditions.
After tank 120 to be formed reaches feeding conditions, open mould material passage 130 and impregnant is delivered in shaping mould 110.Particularly, the temperature of impregnant is 40 ~ 80 DEG C.
More specifically, impregnant is obtained by mode below: added by resin according to formula in mixing tank 141, stirs, opens batch mixing temperature control mechanism 143, be heated to 60 DEG C; Open batch mixing vacuum device 142 to vacuumize, make the vacuum of mixing tank 141 to 100Pa, then leave standstill 2h.
In step s 2, if prepare the insulated tension pole of different size, feed operation can also comprise the steps: when the liquid level in shaping mould 110 is in predetermined altitude, closes the mould material passage 130 of this shaping mould 110 correspondence.
Particularly, when the liquid level that the liquid level sensor 114 of shaping mould 110 detects in this shaping mould 110 is in predetermined altitude, Liquid level module closes the mould material passage 130 of this shaping mould 110 correspondence, stops continuing feed to this shaping mould 110.
After whole mould material passages 130 is all closed, after that is to say that feed is complete, carry out dip operation.
Wherein, dip operation is specially: the air pressure controlling shaping tank 120 is 0.4 ~ 1.0MPa, and dip time is 2 ~ 8h.
More specifically, dip operation is: closing the shaping clamp mechanism 191 that vacuumizes and open pressurized mechanism 192 simultaneously, add nitrogen in shaping tank 120, can certainly be that other do not affect the gas of resin-dipping, such as zero group gas.Until shaping tank internal gas pressure is 0.7MPa, then keep 5h.During this period, shaping temperature control mechanism 180 can be closed.
Wherein, in step s 4 which, curing molding is operating as and heats shaping mould 110, makes resin solidification in shaping mould 110 shaping.Particularly, point two sections of heating, the first stage is heated to 120 DEG C, and keep 2h, second stage is heated to 160 DEG C, keeps 6h.
Particularly, after dip operation terminates, shaping mould 110 is moved in solidification tank by transport channel, in solidification tank, shaping mould 110 is heated.
The impregnation forming method of insulated tension pole provided by the present invention, adopts the dip forming device of insulated tension pole provided by the present invention, follow-up can without machined, can the some insulated tension poles of one time to produce, reduce production cost, improve production efficiency.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a dip forming device for insulated tension pole, comprising:
Some shaping moulds, described shaping mould comprises supporting seat, the core be positioned on described supporting seat, the shaping external mold be enclosed within outside described core;
Shaping tank, for accommodating some described shaping moulds;
Some mould material passages, described mould material passage and described shaping mould one_to_one corresponding, for giving the described shaping mould feed of its correspondence;
And feed unit, for some described mould material passage feed.
2. the dip forming device of insulated tension pole according to claim 1, is characterized in that, described shaping mould also comprises the liquid level sensor be arranged on described shaping external mold; The dip forming device of described insulated tension pole also comprises Liquid level module, and when the liquid level that the liquid level sensor of described shaping mould detects in this shaping mould is in predetermined altitude, described Liquid level module closes mould material passage corresponding to this shaping mould.
3. the dip forming device of insulated tension pole according to claim 1, is characterized in that, described shaping mould also comprises for preventing impregnant from draining to sealing ring in described core, and described sealing ring is arranged on described supporting seat.
4. the dip forming device of insulated tension pole according to claim 1, is characterized in that, the mould material passage that described shaping mould is corresponding with it removably connects.
5. the dip forming device of insulated tension pole according to claim 4, is characterized in that, the dip forming device of described insulated tension pole also comprises the curing mechanism for being cured forming operation to described shaping mould; Described curing mechanism comprises independent of the solidification tank outside described shaping tank.
6. the dip forming device of insulated tension pole according to claim 5, is characterized in that, the dip forming device of described insulated tension pole also comprises the transport channel for transporting described shaping mould; Described transport channel is connected between described shaping tank and described solidification tank.
7. the dip forming device of insulated tension pole according to claim 4, is characterized in that, described supporting seat is provided with the roller for mobile described shaping mould.
8. an impregnation forming method for insulated tension pole, adopts the dip forming device of insulated tension pole according to claim 1, comprises the steps:
Coiling insulation tube embryonic tube on core, by shaping outer die casing outside described insulation tube embryonic tube;
Control shaping tank and reach feeding conditions, impregnant is delivered in shaping mould from feed unit by mould material passage, carries out feed operation;
To be fed complete after, carry out dip operation;
To be impregnated complete after, be cured forming operation.
9. the impregnation forming method of insulated tension pole according to claim 8, is characterized in that, described feed operation comprises the steps: when the liquid level in shaping mould is in predetermined altitude, closes the mould material passage that this shaping mould is corresponding.
10. the impregnation forming method of insulated tension pole according to claim 8, is characterized in that, the gap of described shaping external mold and described insulation tube embryonic tube is 0.1 ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891451.3A CN105328920B (en) | 2015-12-07 | 2015-12-07 | The dip forming device and method of insulated tension pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891451.3A CN105328920B (en) | 2015-12-07 | 2015-12-07 | The dip forming device and method of insulated tension pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105328920A true CN105328920A (en) | 2016-02-17 |
| CN105328920B CN105328920B (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510891451.3A Active CN105328920B (en) | 2015-12-07 | 2015-12-07 | The dip forming device and method of insulated tension pole |
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| CN (1) | CN105328920B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381947A (en) * | 2018-03-01 | 2018-08-10 | 江苏神马电力股份有限公司 | A kind of insulated tension pole vacuum impregnation equipment |
| CN114536796A (en) * | 2022-03-22 | 2022-05-27 | 宁波卡奔密封科技有限公司 | Treatment process of bar for sealing element production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1527501A (en) * | 1974-09-26 | 1978-10-04 | Du Pont | Composite articles |
| CN103015789A (en) * | 2012-12-05 | 2013-04-03 | 江苏神马电力股份有限公司 | Layer structure of inner insulating tube of composite cross arm |
| CN104290335A (en) * | 2014-09-30 | 2015-01-21 | 麦克奥迪（厦门）电气股份有限公司 | Production process of insulation pull rod |
| CN104816753A (en) * | 2014-02-04 | 2015-08-05 | 株式会社捷太格特 | Method of manufacturing bar member and bar member |
-
2015
- 2015-12-07 CN CN201510891451.3A patent/CN105328920B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1527501A (en) * | 1974-09-26 | 1978-10-04 | Du Pont | Composite articles |
| CN103015789A (en) * | 2012-12-05 | 2013-04-03 | 江苏神马电力股份有限公司 | Layer structure of inner insulating tube of composite cross arm |
| CN104816753A (en) * | 2014-02-04 | 2015-08-05 | 株式会社捷太格特 | Method of manufacturing bar member and bar member |
| CN104290335A (en) * | 2014-09-30 | 2015-01-21 | 麦克奥迪（厦门）电气股份有限公司 | Production process of insulation pull rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381947A (en) * | 2018-03-01 | 2018-08-10 | 江苏神马电力股份有限公司 | A kind of insulated tension pole vacuum impregnation equipment |
| CN114536796A (en) * | 2022-03-22 | 2022-05-27 | 宁波卡奔密封科技有限公司 | Treatment process of bar for sealing element production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105328920B (en) | 2018-01-23 |
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