CN102904140B - Cable shielding layer splicing method - Google Patents
Cable shielding layer splicing method Download PDFInfo
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- CN102904140B CN102904140B CN201210366593.4A CN201210366593A CN102904140B CN 102904140 B CN102904140 B CN 102904140B CN 201210366593 A CN201210366593 A CN 201210366593A CN 102904140 B CN102904140 B CN 102904140B
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Abstract
The invention discloses a cable shielding layer splicing method which belongs to the technical field of electric installation and connection and specifically relates to a shielding layer splicing process aiming at cables. Through the shielding layer splicing method, improvement is carried out on the original shielding sleeve processing method, namely, before fusion welding is carried out on soldering tin rings of shielding mesh sleeves of two spliced cables, tinning is carried out on welding parts of shielding layers and the shielding mesh sleeves of the spliced cables so as to infiltrate the soldering tin into the shielding layers of the cables to ensure that the contact between the soldering tin and the shielding layers of the cables is reliable; and the soldering tin rings at two ends of the shielding mesh sleeves are heated through a hot air gun and then the soldering tin rings and the soldering tin at the tinning parts of the shielding layers of the spliced cables are integrally connected due to melting by heating, so that the shielding layers and shielding mesh sleeves of the two spliced cables can contact reliably and the splicing quality of the shielding layers of the cables is ensured.
Description
Technical field
Patent of the present invention belongs to electric Assembly field, is specifically related to a kind of for cable shield continued access technological method for processing.
Background technology
On current aircraft, bus cable adopts the 4M data/address bus (American Standard 1553B) meeting GJB289A standard to complete communication in aircraft between each equipment.Compared with common cable, data bus cable has high, the stronger antijamming capability of message transmission rate, good fault-tolerance and Fault Isolation performance.For ensureing the performance reliability of cable, data bus cable requires high to shielding properties, requires screen resistance value < 0.039 Ω/m.
Current bus cable is connected in series by multiple coupler to form, and the bus cable screen between coupler needs to carry out continued access by gauze screen cover, and sheath material object is shown in shown in accompanying drawing 1.Shield the solder ring at net two ends during continued access to overlap with the bus cable screen of two continued accesses, then the solder ring at net two ends is shielded until melts soldering tin with the heat gun heating with reflector plate, connect guarantee two bus cable screens and shielding net reliable contacts by scolding tin, thus the shielding properties realizing bus cable is continuous.But bus cable is made as a new technique, and the coupler adopted and shield sheath are U.S.'s Raychem production, cannot monitor its quality, material object always there will be many quality problems, such as: in shielding net, solder ring material is waited to expect and the problem such as coupler cable shielding layer oxidation, therefore in actual cable manufacturing process, if the above-mentioned process provided by producer is processed, encounter shielding net off quality and cable, wanting the scolding tin after solder ring is melted in the course of processing penetrates in the screen of bus cable, heating time length consuming time, now then there will be the band glue pyrocondensation insulating sleeve explosion outside solder ring, if heating time is short, the scolding tin of shielding net can not penetrate in the screening braid of continued access cable, just adhesion, the screen causing shielding net and bus cable can not reliable contacts, cable shield resistance value is ohm level, the milliohm grade standard that can not meet design requirement far away, < 0.039 Ω/m index that cannot meet design requirement, therefore the bus cable performance test made is defective, type product instructions for use can not be met, affect model production assembling progress and test.For ensureing that bus cable quality meets design requirement, the technological method for processing of shielding continued access urgently improves.
Summary of the invention
The object of the invention is to improve cable shield continued access process, the difficult problem that the screen resistance value solving current appearance exceeds standard, study a kind of screen continued access technological method for processing, by the method to cable shield continued access, the screen resistance value after continued access meets the requirement of < 0.039 Ω/m.
Screen continued access method of the present invention improves original shield sheath technological method for processing, that is: before melting welding being carried out to the solder ring of shielding net, first with shielding net welding position, tin process is warded off to the screen of continued access cable, object penetrates in cable shield by scolding tin, and scolding tin is contacted with cable shield reliably; Then by the solder ring at heat gun heating shielding net two ends, solder ring and continued access cable shield ward off the scolding tin of Xi Chu because melted by heat is connected as a single entity, thus make the screen of two continued access cables and shielding net reliable contacts, ensure that the continued access quality of cable shield, the cable shield resistance value after continued access meets index request: i.e. < 0.039 Ω/m.
Technical scheme of the present invention is: a kind of cable shield continued access method is introduced, and this comprises the steps
Step one: two cable shields of cleaning continued access
With being soaked with the medical absorbent cotton of absolute ethyl alcohol by two of continued access cable shield scrubs,
Step 2: tin is warded off to two cable shield melting welding positions of continued access
Step 3: the shielding net installing continued access shielding
Shielding net is moved on in the middle part of the cable area of two continued accesses, requires that the solder ring at shielding net two ends overlaps with cable shield zinc-plated position 10mm ~ 12mm section,
Step 4: shielding net two ends solder ring is carried out melting welding with the screen of two continued access cables respectively and is connected
Step 5: room temperature cools
Carry out room temperature cooling after the shielding solder ring of net is connected with the screen melting welding of two continued access cables, after cooling completely, carry out follow-up work again.
A kind of cable shield continued access method as above is introduced, wherein, described step 2 comprises the steps: to ward off tin process with temperature control electric ferrochrome to needing two of continued access cable shield continued access positions, ward off tin length 10mm ~ 12mm, tin-lead solder adopts GB/T3131 HLSn60PbA, and warding off Xi Wendu is 300 DEG C ± 10 DEG C, requires that all there is scolding tin on 360 °, cable shield surface when warding off tin, tin layers thickness is evenly distributed, smooth bright, and to penetrate in the braid of cable shield.
A kind of cable shield continued access method as above is introduced, wherein, thermofussion welding is added with the solder ring of heat gun to shielding net two ends, heat gun muzzle must be with reflector plate, during melting welding, heat can be gathered by reflector plate, help melts soldering tin, the solder ring at shielding net two ends is put into successively and heats with between the hot-air mouth of the heat gun of reflector plate and reflector plate, the temperature of heat gun is 340 DEG C ± 10 DEG C, during wind speed is, during heating by continued access cable together with solder ring slowly even 360 ° of rotations, ensure converted products 360 ° of thermally equivalents, until solder ring and cable shield fuse together after warding off the melts soldering tin of Xi Chu, and penetrate in the screen of cable, ensure the screen of continued access cable and shielding net reliable contacts, thus ensure that the cable shield continuity after continued access, screen resistance value meets < 0.039 Ω/m requirement.
The invention has the beneficial effects as follows:
The present invention proposes a kind of improvement cable shield continued access process, the difficult problem that the screen resistance value solving current appearance exceeds standard.Before the present invention adopts cable shield and the melting welding of ground shield layer net, welding position is carried out zinc-plated process, scolding tin is made to contact reliably with bus cable screen, then by the solder ring at ground shield layer net two ends and the zinc-plated screen of bus cable, by melting welding mode, the scolding tin on the scolding tin of ground shield net and bus cable is combined, make two ends bus cable screen and shielding net reliable contacts, ensure the continued access quality of bus cable screen, guarantee low-resistance value requirement.
Accompanying drawing explanation
Fig. 1: shielding net schematic diagram in kind
Fig. 2: continued access cable shield wards off tin schematic diagram
Fig. 3: continued access cable shield and joint D-150-9708-5 shield the connection diagram of net
In figure: 1. scolding tin 2. heat-shrink tube 3. solder ring 4. shield net 5. cable 6. screen 7. ward off tin 8. L=10mm ~ 12mm (L be shielding net two ends solder ring position zinc-plated with cable shield) 9. melting welding be connected
Embodiment
Below in conjunction with drawings and Examples, a kind of cable shield continued access method provided by the invention is introduced: this comprises the steps
1. clean two cable shields of continued access
With being soaked with the medical absorbent cotton of absolute ethyl alcohol by two of continued access cable shield scrubs.
2. tin is warded off at two cable shield melting welding positions of pair continued access
Tin process is warded off to needing two of continued access cable shield continued access positions (that is: with shielding net welding position) with temperature control electric ferrochrome, ward off tin position as shown in Figure 2, ward off tin length (solder ring at shielding net two ends and the zinc-plated position of cable shield) L=10mm ~ 12mm, tin-lead solder adopts GB/T3131HLSn60PbA, warding off Xi Wendu is 300 DEG C ± 10 DEG C, require when warding off tin that all there is scolding tin on 360 °, cable shield surface, tin layers thickness is evenly distributed, smooth bright, and to penetrate in the braid of cable shield.
3. the shielding net of continued access shielding is installed
Shielding net is moved on in the middle part of the cable area of two continued accesses, requires that the solder ring at shielding net two ends overlaps with cable shield zinc-plated position 10mm ~ 12mm section.
4. shielding net two ends solder ring is carried out melting welding with the screen of two continued access cables to be respectively connected
Add thermofussion welding with the solder ring of heat gun to shielding net two ends, heat gun muzzle must be with reflector plate, and during melting welding, heat can be gathered by reflector plate, helps melts soldering tin.The solder ring at shielding net two ends is put into successively and heats with between the hot-air mouth of the heat gun of reflector plate and reflector plate, the temperature of heat gun is 340 DEG C ± 10 DEG C, during wind speed is, during heating by continued access cable together with solder ring slowly even 360 ° of rotations, ensure converted products 360 ° of thermally equivalents, until solder ring and cable shield fuse together after warding off the melts soldering tin of Xi Chu, and penetrate in the screen of cable, ensure the screen of continued access cable and shielding net reliable contacts, thus ensure that the cable shield continuity after continued access, screen resistance value meets < 0.039 Ω/m requirement, melting welding position is concrete as shown in Figure 3.
5. room temperature cooling
Carry out room temperature cooling after the shielding solder ring of net is connected with the screen melting welding of two continued access cables, after cooling completely, carry out follow-up work again.
In sum, in the present invention, first tin treatment process method is warded off to wire core thus cable shield continued access process is improved when cable shield continued access technological method for processing is by using for reference wire bonds, before melting welding is carried out to the solder ring of shielding net, first tin process is warded off to the screen (contact with shielding net part) of cable, and then carry out melting welding with gauze screen cover and be connected, the screen of continued access cable and shielding net are connected as a single entity by scolding tin by the method, both heated with heat gun, the scolding tin making the scolding tin in solder ring and cable shield ward off Xi Chu dissolves and is integrated, ensure that the continuity of continued access cable shield, prevent the quality problems brought because screen continued access is unreliable.Detect the cable shield resistance value after continued access, all meet < 0.039 Ω/m index request of regulation in national military standard GJB 5186.5.
Claims (3)
1. a cable shield continued access method, is characterized in that: the method comprises the steps,
Step one: two cable shields of cleaning continued access,
With being soaked with the medical absorbent cotton of absolute ethyl alcohol by two of continued access cable shield scrubs,
Step 2: tin is warded off to two cable shield melting welding positions of continued access,
Step 3: the shielding net installing continued access shielding,
Shielding net is moved on in the middle part of the cable area of two continued accesses, requires that the solder ring at shielding net two ends overlaps with cable shield zinc-plated position L=10mm ~ 12mm section,
Step 4: shielding net two ends solder ring is carried out melting welding with the screen of two continued access cables respectively and is connected,
Step 5: room temperature cools,
Carry out room temperature cooling after the shielding solder ring of net is connected with the screen melting welding of two continued access cables, after cooling completely, carry out follow-up work again.
2. a kind of cable shield continued access method as claimed in claim 1, it is characterized in that: described continued access method step two comprises the steps: to ward off tin process with temperature control electric ferrochrome to needing two of continued access cable shield continued access positions, ward off tin length 10mm ~ 12mm, tin-lead solder adopts GB/T3131HLSn60PbA, warding off Xi Wendu is 300 DEG C ± 10 DEG C, require when warding off tin that all there is scolding tin on 360 °, cable shield surface, tin layers thickness is evenly distributed, smooth bright, and to penetrate in the braid of cable shield.
3. a kind of cable shield continued access method as claimed in claim 2, it is characterized in that: described step 4, thermofussion welding is added with the solder ring of heat gun to shielding net two ends, heat gun muzzle must be with reflector plate, during melting welding, heat can be gathered by reflector plate, help melts soldering tin, the solder ring at shielding net two ends is put into successively and heats with between the hot-air mouth of the heat gun of reflector plate and reflector plate, the temperature of heat gun is 340 DEG C ± 10 DEG C, during wind speed is, during heating by continued access cable together with solder ring slowly even 360 ° of rotations, ensure converted products 360 ° of thermally equivalents, until solder ring and cable shield fuse together after warding off the melts soldering tin of Xi Chu, and penetrate in the screen of cable, ensure the screen of continued access cable and shielding net reliable contacts, thus ensure that the cable shield continuity after continued access, screen resistance value meets < 0.039 Ω/m requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210366593.4A CN102904140B (en) | 2012-09-28 | 2012-09-28 | Cable shielding layer splicing method |
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| CN201210366593.4A CN102904140B (en) | 2012-09-28 | 2012-09-28 | Cable shielding layer splicing method |
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| CN102904140B true CN102904140B (en) | 2015-05-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105048251B (en) * | 2015-05-29 | 2017-09-01 | 深圳市智豪特材科技有限公司 | A kind of heating means of middle connecting terminal molding assembly |
| CN105235201A (en) * | 2015-10-30 | 2016-01-13 | 安徽五星新型防水建材科技有限公司 | Substrate base connection device used for waterproof cloth production |
| CN109038154B (en) * | 2018-07-27 | 2020-06-30 | 北京星航机电装备有限公司 | Connection method of radio frequency connector and cable |
| CN109038157A (en) * | 2018-07-27 | 2018-12-18 | 北京星航机电装备有限公司 | A kind of number bus cable shield layer conductor outbound course |
| CN109286083A (en) * | 2018-09-28 | 2019-01-29 | 乐清市华仪电缆附件有限公司 | A kind of three-core cable welded joint and its mounting process |
| CN112490811B (en) * | 2020-11-18 | 2022-02-11 | 天水铁路电缆有限责任公司 | Method for connecting railway through ground wire |
| CN113523488B (en) * | 2021-08-11 | 2023-03-24 | 四川九立微波有限公司 | Semi-rigid cable welding explosion-proof treatment method |
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| CN101068075A (en) * | 2007-05-22 | 2007-11-07 | 宁波东方电缆有限公司 | Soft joint for cross-linked polyethylene cable and producing method thereof |
| CN102611067A (en) * | 2012-03-21 | 2012-07-25 | 哈尔滨理工大学 | High-voltage cable flexible joint with non-linear shielding layers |
| CN102664380A (en) * | 2012-04-19 | 2012-09-12 | 中天科技海缆有限公司 | Flexible joint for 220kV crosslinked polyethylene submarine cables and method for manufacturing flexible joint |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068075A (en) * | 2007-05-22 | 2007-11-07 | 宁波东方电缆有限公司 | Soft joint for cross-linked polyethylene cable and producing method thereof |
| CN102611067A (en) * | 2012-03-21 | 2012-07-25 | 哈尔滨理工大学 | High-voltage cable flexible joint with non-linear shielding layers |
| CN102664380A (en) * | 2012-04-19 | 2012-09-12 | 中天科技海缆有限公司 | Flexible joint for 220kV crosslinked polyethylene submarine cables and method for manufacturing flexible joint |
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Address after: 100074 Fengtai District City, east of the north of Beijing, Wang Gang Road, No. 9 Applicant after: Beijing Xinghang Mechanical & Electric Equipment Co., Ltd. Address before: 100074 Fengtai District City, east of the north of Beijing, Wang Gang Road, No. 9 Applicant before: Beijing Xinghang Mechanical-Electrical Equipment Factory |
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