CN101840758A - Production process of composite insulator by integral injection molding without positioning device - Google Patents
Production process of composite insulator by integral injection molding without positioning device Download PDFInfo
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- CN101840758A CN101840758A CN201010184485A CN201010184485A CN101840758A CN 101840758 A CN101840758 A CN 101840758A CN 201010184485 A CN201010184485 A CN 201010184485A CN 201010184485 A CN201010184485 A CN 201010184485A CN 101840758 A CN101840758 A CN 101840758A
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Abstract
The invention discloses a production process of a composite insulator. The production process of a composite insulator by integral injection molding comprises the following steps of: firstly, forming a protective sleeve on a mandrel; putting the mandrel with the protective sleeve in an injection die; and injecting an outer umbrella skirt of a composite insulator by an injection machine. By the support of the protective sleeve, the mandrel is not positioned by any other mechanical positioning device in the injection die. The invention has the advantages that the mandrel can not be eccentric from the protective sleeve due to mono-directional injection force during injection, the surface of the mandrel can not be damaged, such as scratches, blanching, and the like at a high temperature, the bonding effect of the protective sleeve and the mandrel is not influenced by the thickness of the umbrella skirt, the quality problems on mechanical electric performance, such as interference bubbles, poor bonding, electric breakdown, and the like can not occur between the umbrella skirt and the protective sleeve because of artificially bonding room-temperature vulcanized rubber, and the problem of easy aging because of artificially bonding the room-temperature vulcanized rubber can be avoided.
Description
Technical field
The present invention relates to a kind of production technology of composite insulator, particularly a kind of production technology that does not need the composite insulator by integral injection molding of positioner.
Background technology
Composite insulator is a kind of special insulation control, can play an important role in overhead transmission line.Composite insulator mainly is made up of cluster parachute, sheath and plug.The technology that full skirt and sheath moulding process are produced suspended compound insulator at present both at home and abroad mainly contains: integral body extrudes sheath and wears umbrella, three kinds of integral die and integral injection moldings.
Integral body extrudes sheath, and to wear the umbrella production cost low, organizes convenient for productionly, easily satisfies many specifications, the customer requirement that quantity is few.But adopt vulcanized rubber at room temperature manually bonding between its full skirt and the sheath, be prone to the interface bubble, bonding not firm, puncture waits mechanical electric performance quality problem, and insurmountable problem such as vulcanized rubber at room temperature relatively-high temperature vulcanizate is easily aging, belong to relatively backward production technology.
The integral die device simple that puts into production, cheap.But because solid state si rubber is mobile poor, especially at room temperature, mobile performance is very bad, be difficult to fill full big full skirt or than the die cavity of labyrinth, easily cause blemish more, and inevitably plug off-centre and damage problem, influence the product quality behind the hanging net operation.
Integral injection molding is the automaticity height of generally acknowledging, the efficient height, and steady quality, the expert thinks state-of-the-art production technology both at home and abroad.Full skirt and sheath are to use the same material one-shot forming, do not wear the different materials interface problem that umbrella extrudes technology; Silicon rubber is taked higher temperature plasticizing measure before injecting die cavity, improved the flowability when silicon rubber is injected, and has under the bigger injection pressure at injection molding and injects die cavity, thereby solve the local starved problem that compression molding exists.But this production technology exists plug off-centre and damage problem; the silicon rubber of HTHP injects die cavity on one side from plug; easily cause the off-centre of plug; the both sides became uneven of sheath is even; serious situation is that plug is not protected; cause core brittle fracture after the long-time running, serious accident may occur.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention provides a kind of production process of composite insulator that does not need the integral injection molding of positioner.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
1) a kind of production process of composite insulator by integral injection molding that does not need positioner is characterized in that it comprises the steps: 1) the refining silicon rubber gross rubber; 2) plug is opened material, polishing, cleaning, gluing, dried; 3) will refine good silicon rubber gross rubber and in 100 ℃～180 ℃ scopes, adopt the machine of extruding to be wrapped on the mandrel surface, and the silicon rubber gross rubber of mandrel surface will be carried out sulfidization molding, and make it form the needed sheath of design and processes at mandrel surface; 4) sulfidization molding is good plug is positioned over the external shed of injecting composite insulator in the injection molding by injector, and carries out sulfidization molding; 5) product with sulfidization molding carries out the outward appearance processing; 6) product that outward appearance is handled well carries out the end crimping and becomes finished product; 7) finished product is carried out quality inspection and enter the storehouse.
Preferably, the refining silicon rubber gross rubber comprises step specific as follows in the step 1): a) banburying is handled, and the various raw material that prepared are even by mixer mixing; B) mediate processing, various auxiliary agents and filler are uniformly dispersed in sizing material, and, guarantee every stable performance unanimity of sizing material by vacuumizing the moisture and the lower-molecular substance of discharging in the sizing material; C) thin-pass is handled, and makes the sizing material cooling and makes its dispersion more even; D) park, will through kneading after the thin-pass sizing material in accordance with regulations weight fraction be placed on the charging tray well, be transported to mediate in the bin aging chamber, back and park, the storage period is not less than 48 hours; E) add sulphur, vulcanizing agent is evenly spread in the sizing material, make sizing material when the injection sulfuration, cross-linking reaction take place, form netted stereochemical structure, guarantee that product possesses favorable mechanical performance and electric property; F) add thin-pass behind the sulphur, sizing material after adding sulphur is carried out thin-pass, the thin-pass number of times is no less than 3 times; G) park after adding the sulphur thin-pass, the bin aging time is not less than 24 hours; H) back mixing is handled, and makes sizing material form certain plasticity by back mixing, guarantees that the processes of sizing material meets product injection moulding requirement.
Preferably, will extrude glue adds die cavity and plug is directly extruded the encapsulate plug by the machine of extruding; The encapsulate plug is in extrusion, by preceding drying tunnel fast shaping, 620 ± 50 ℃ of preceding drying tunnel working temperatures go out on the drying tunnel plug 140 ± 20 ℃ of silica gel surface temperatures, encapsulate mandrel surface skin has been realized sulfuration and semi-cure, enters the back drying tunnel then and carries out full cure.
Preferably, in step 4), need carry out deburring, crimping processing behind the external shed sulfidization molding of composite insulator, carry out quality inspection then.
Technique scheme has following beneficial effect, this production process of composite insulator by integral injection molding at first forms sheath on plug, to have again sheath plug be placed in the injection molding external shed by injector injection composite insulator, because the support of sheath is arranged, plug need not other mechanical positioners and comes location mandril in injection molding, it has following advantage: 1) make plug can not produce off-centre because of unidirectional injection force causes plug and sheath when injection; 2) plug when being subjected to high temperature, can not occur because of mechanical positioning make mandrel surface occur injured, equivalent damage turns white; 3) the bonding thickness of full skirt that is not subjected to of sheath and plug influences its adhesive effect; 4) can not occur between full skirt and the sheath owing to adopting the artificial bonding interface bubble that occurs of vulcanized rubber at room temperature, bonding not firm, puncture waits mechanical electric performance quality problem, 5) can not occur owing to adopt the artificial bonding easily aging problem of vulcanized rubber at room temperature to occur.
Embodiment
This does not need the production process of composite insulator by integral injection molding of positioner, and it comprises the steps:
1) system silicon rubber gross rubber, it specifically comprises the steps: a) banburying processing, and the various raw material that prepared are even by mixer mixing; B) mediate processing, various auxiliary agents and filler are uniformly dispersed in sizing material, and, guarantee every stable performance unanimity of sizing material by vacuumizing the moisture and the lower-molecular substance of discharging in the sizing material; C) thin-pass is handled, and makes the sizing material cooling and makes its dispersion more even; D) park, will through kneading after the thin-pass sizing material in accordance with regulations weight fraction be placed on the charging tray well, be transported to mediate in the bin aging chamber, back and park, the storage period is not less than 48 hours; E) add sulphur, vulcanizing agent is evenly spread in the sizing material, make sizing material when the injection sulfuration, cross-linking reaction take place, form netted stereochemical structure, guarantee that product possesses favorable mechanical performance and electric property; F) add thin-pass behind the sulphur, sizing material after adding sulphur is carried out thin-pass, the thin-pass number of times is no less than 3 condition g) to park after adding the sulphur thin-pass, the bin aging time is not less than 24 hours; H) back mixing is handled, and the processes that makes sizing material form certain plasticity assurance sizing material by back mixing meets product injection moulding requirement.
2) plug is opened material, polishing, make the rough surface of plug, clear up then, and, at last the plug behind the gluing is carried out dried at the mandrel surface gluing.
3) will refine good silicon rubber gross rubber adopts the machine that extrudes to be wrapped on the mandrel surface uniformly in 100 ℃～180 ℃ scopes, and the silicon rubber gross rubber of mandrel surface carried out sulfidization molding, its concrete steps are: will extrude glue and add die cavity and plug is directly extruded the encapsulate plug by the machine of extruding; The encapsulate plug is in extrusion, by preceding drying tunnel fast shaping, 620 ± 50 ℃ of preceding drying tunnel working temperatures, go out on the drying tunnel plug 140 ± 20 ℃ of silica gel surface temperatures, encapsulate mandrel surface skin has been realized sulfuration and semi-cure, enter the back drying tunnel then and carry out full cure, make it form sheath at mandrel surface
4) sulfidization molding is good plug is positioned over the external shed of injecting composite insulator in the injection molding by injector, and carries out sulfidization molding.
5) carry out deburring and handle, the goods after the injection sulfuration carry out deburring, repair except that matched moulds seam overlap, the excessive glue of joint etc., make the product appearance neat appearance, meet corresponding product appearance standard-required.
6) product that outward appearance is handled well carries out the end crimping and becomes finished product, finished product is carried out quality inspection enter the storehouse.
This production process of composite insulator is compared with original production technology has following advantage:
1) between the product full skirt of this explained hereafter and sheath, adopts full skirt and the same silicon rubber high-temperature mixing glue sulfidization molding of sheath, solved and adopted vulcanized rubber at room temperature manually bonding between full skirt and the sheath, be prone to the interface bubble, bonding not firm, puncture waits mechanical electric performance quality problem, and problem such as vulcanized rubber at room temperature relatively-high temperature vulcanizate is easily aging;
2) plug can not occur occurring because of mechanical positioning makes plug that the surface is injured, equivalent damage turns white when being subjected to high temperature;
3) integral injection molding technology plug and sheath off-centre, plug damaged, the preceding easily dirty bonding not firm bonding gas problem that occurs that causes of plug production have been solved;
4) can shorten cure time greatly by the production of this technology, by the thickness decision cure time of full skirt, not determine the sulfidization molding time fully because of the thickness of sheath;
5) can solve the insulation mandrel that is coated with behind the primer by this explained hereafter is not subjected to the influence of air humidity, atmosphere cleannes to influence the electric property of product;
6) can improve the production of automationization to the utmost by this explained hereafter, thereby fine realization automated production control line is guaranteed the stability of product quality.
More than a kind of production process of composite insulator by integral injection molding of positioner that do not need that the embodiment of the invention provided is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; part in specific embodiments and applications all can change; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (4)
1. a production process of composite insulator by integral injection molding that does not need positioner is characterized in that it comprises the steps:
1) refining silicon rubber gross rubber;
2) plug is opened material, polishing, cleaning, gluing, dried;
3) will refine good silicon rubber gross rubber and in 100 ℃～180 ℃ scopes, adopt the machine of extruding to be wrapped on the mandrel surface, and the silicon rubber gross rubber of mandrel surface will be carried out sulfidization molding, and make it form the needed sheath of design and processes at mandrel surface;
4) sulfidization molding is good plug is positioned over the external shed of injecting composite insulator in the injection molding by injector, and carries out sulfidization molding.
5) product with sulfidization molding carries out the outward appearance processing;
6) product that outward appearance is handled well carries out the end crimping and becomes finished product;
7) finished product is carried out quality inspection and enter the storehouse.
2. the production process of composite insulator by integral injection molding that does not need positioner according to claim 1 is characterized in that, the refining silicon rubber gross rubber comprises step specific as follows in the step 1):
A) banburying is handled, and the various raw material that prepared are even by mixer mixing;
B) mediate processing, various auxiliary agents and filler are uniformly dispersed in sizing material, and, guarantee every stable performance unanimity of sizing material by vacuumizing the moisture and the lower-molecular substance of discharging in the sizing material;
C) thin-pass is handled, and makes the sizing material cooling and makes its dispersion more even;
D) park, will through kneading after the thin-pass sizing material in accordance with regulations weight fraction be placed on the charging tray well, be transported to mediate in the bin aging chamber, back and park, the storage period is not less than 48 hours;
E) add sulphur, vulcanizing agent is evenly spread in the sizing material, make sizing material when the injection sulfuration, cross-linking reaction take place, form netted stereochemical structure, guarantee that product possesses favorable mechanical performance and electric property;
F) add thin-pass behind the sulphur, sizing material after adding sulphur is carried out thin-pass, the thin-pass number of times is no less than 3 times;
G) park after adding the sulphur thin-pass, the bin aging time is not less than 24 hours;
H) back mixing is handled, and makes sizing material form certain plasticity by back mixing, guarantees that the processes of sizing material meets product injection moulding requirement.
3. the production process of composite insulator by integral injection molding that does not need positioner according to claim 1 is characterized in that, the concrete steps of step 3) are: will extrude glue and add die cavity and plug is directly extruded the encapsulate plug by the machine of extruding; The encapsulate plug is in extrusion, by preceding drying tunnel fast shaping, 620 ± 50 ℃ of preceding drying tunnel working temperatures go out on the drying tunnel plug 140 ± 20 ℃ of silica gel surface temperatures, encapsulate mandrel surface skin has been realized sulfuration and semi-cure, enters the back drying tunnel then and carries out full cure.
4. the production process of composite insulator by integral injection molding that does not need positioner according to claim 1 is characterized in that, need carry out deburring, crimping processing in step 4) behind the external shed sulfidization molding of composite insulator, carries out quality inspection then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010184485A CN101840758A (en) | 2010-05-27 | 2010-05-27 | Production process of composite insulator by integral injection molding without positioning device |
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| CN201010184485A CN101840758A (en) | 2010-05-27 | 2010-05-27 | Production process of composite insulator by integral injection molding without positioning device |
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| CN101840758A true CN101840758A (en) | 2010-09-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078170A (en) * | 2014-06-30 | 2014-10-01 | 江苏南瓷绝缘子股份有限公司 | Method for manufacturing high-electromechanical-property composite insulator |
| CN108010646A (en) * | 2017-12-28 | 2018-05-08 | 中复碳芯电缆科技有限公司 | A kind of inner wall silicon rubber insulation pipe and preparation method thereof |
| CN108198670A (en) * | 2018-01-08 | 2018-06-22 | 江苏神马电力股份有限公司 | A kind of composite insulator and preparation method thereof |
| CN109698049A (en) * | 2018-12-29 | 2019-04-30 | 长园高能电气股份有限公司 | A kind of Novel combined insulator and its production technology |
| CN114498165A (en) * | 2022-03-11 | 2022-05-13 | 中车青岛四方车辆研究所有限公司 | High-weather-resistance connector structure for rail transit, production process of high-weather-resistance connector structure and L-shaped rigid outdoor terminal |
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| JPH09330628A (en) * | 1996-06-06 | 1997-12-22 | Takaoka Electric Mfg Co Ltd | Manufacture of resin insulator and its device |
| JPH11111087A (en) * | 1997-10-03 | 1999-04-23 | Toshiba Silicone Co Ltd | Silicone rubber insulator |
| CN1417811A (en) * | 2001-11-09 | 2003-05-14 | 及荣车 | Double-jacket integrally injected synthetic silicone rubber insulator |
| CN1908067A (en) * | 2005-07-21 | 2007-02-07 | 江苏宏达化工新材料股份有限公司 | Preparation method of special material for injection moulding composite silicon rubber insulator mixing refine rubber |
| CN1925069A (en) * | 2006-02-10 | 2007-03-07 | 南方电网技术研究中心 | Technology for producing synthesized insulator without needing two-section sulfuration |
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2010
- 2010-05-27 CN CN201010184485A patent/CN101840758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09330628A (en) * | 1996-06-06 | 1997-12-22 | Takaoka Electric Mfg Co Ltd | Manufacture of resin insulator and its device |
| JPH11111087A (en) * | 1997-10-03 | 1999-04-23 | Toshiba Silicone Co Ltd | Silicone rubber insulator |
| CN1417811A (en) * | 2001-11-09 | 2003-05-14 | 及荣车 | Double-jacket integrally injected synthetic silicone rubber insulator |
| CN1908067A (en) * | 2005-07-21 | 2007-02-07 | 江苏宏达化工新材料股份有限公司 | Preparation method of special material for injection moulding composite silicon rubber insulator mixing refine rubber |
| CN1925069A (en) * | 2006-02-10 | 2007-03-07 | 南方电网技术研究中心 | Technology for producing synthesized insulator without needing two-section sulfuration |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078170A (en) * | 2014-06-30 | 2014-10-01 | 江苏南瓷绝缘子股份有限公司 | Method for manufacturing high-electromechanical-property composite insulator |
| CN104078170B (en) * | 2014-06-30 | 2017-02-01 | 江苏南瓷绝缘子股份有限公司 | Method for manufacturing high-electromechanical-property composite insulator |
| CN108010646A (en) * | 2017-12-28 | 2018-05-08 | 中复碳芯电缆科技有限公司 | A kind of inner wall silicon rubber insulation pipe and preparation method thereof |
| CN108010646B (en) * | 2017-12-28 | 2024-04-16 | 中复碳芯电缆科技有限公司 | Inner wall silicon rubber insulating tube and preparation method thereof |
| CN108198670A (en) * | 2018-01-08 | 2018-06-22 | 江苏神马电力股份有限公司 | A kind of composite insulator and preparation method thereof |
| CN109698049A (en) * | 2018-12-29 | 2019-04-30 | 长园高能电气股份有限公司 | A kind of Novel combined insulator and its production technology |
| CN114498165A (en) * | 2022-03-11 | 2022-05-13 | 中车青岛四方车辆研究所有限公司 | High-weather-resistance connector structure for rail transit, production process of high-weather-resistance connector structure and L-shaped rigid outdoor terminal |
| CN114498165B (en) * | 2022-03-11 | 2024-01-19 | 中车青岛四方车辆研究所有限公司 | High weather-resistant connector structure for rail transit, production process of connector structure and L-shaped rigid outdoor terminal |
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Application publication date: 20100922 |