CN104976901A - FEP insulation polyimide sheath cable sintering furnace - Google Patents
FEP insulation polyimide sheath cable sintering furnace Download PDFInfo
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- CN104976901A CN104976901A CN201510406796.5A CN201510406796A CN104976901A CN 104976901 A CN104976901 A CN 104976901A CN 201510406796 A CN201510406796 A CN 201510406796A CN 104976901 A CN104976901 A CN 104976901A
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- earthenware
- sintering
- temperature
- sintering furnace
- cable
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Abstract
The invention belongs to the field of cable production and discloses a FEP insulation polyimide sheath cable sintering furnace. The FEP insulation polyimide sheath cable sintering furnace comprises a temperature control device, an outer casing pipe and a ceramic pipe. End covers are connected to the two ends of the ceramic pipe. Through holes where a cable penetrates are formed in the centers of the end covers at the two ends of the ceramic pipe. The ceramic pipe is coaxially arranged inside the outer casing pipe. An electric furnace wire is wound around the outer wall of the ceramic pipe in the length direction. The position between the ceramic pipe and the outer casing pipe is filled with a heat preservation layer. The temperature control device is used for controlling the sintering temperature inside the ceramic pipe. The length of a sintering area is shortened; reciprocating guide wheels are omitted; the length of the sintering furnace is designed to be 1.2-1.5 meters; the sintering temperature is increased to be 580-620 DEG C; after the cable enters the sintering furnace, the cable is rapidly heated, so that the temperature of a polyimide membrane winding wire is rapidly increased to be the melting point of glue; as the heat conduction performance of FEP is poor, rapid heating can not be achieved within the short time. The cable exits from the sintering furnace to be naturally cooled before the FEP deforms, so that the problem of sintering deformation is avoided.
Description
Technical field
Cable production field of the present invention, is specially a kind of FEP dielectric polyimide jacket cables sintering furnace.
Background technology
The sintering processing of the polyimides winding wire layer of cable generally adopts sintering baking box or sintering furnace to carry out, adopting during sintering furnace generally adopts cyclic sintering processing (as the two end device guide wheels at sintering furnace, many cables repeat at baking box Inner eycle from guide wheel revolution, to reach the object extending sintering time.Its advantage is that sintering temperature is low, and (its temperature gets final product general control at 360 DEG C to 380 DEG C in glue melt-flow temperature), is convenient to control, can effectively prevents material from burning.
Said method is applicable to the winding wire sintering of polyimide insulative, but when sintering FEP dielectric polyimide jacket cables, because FEP is hot-melt extruded material, in above-mentioned sintering furnace, under (at 265 DEG C, melt flow temperature is best at about 360 DEG C to the fusing point of FEP) high temperature, easily melt swell causes the out-of-flatness very of cable jacket surface.
Summary of the invention
The object of the invention is to solve the problem, provide a kind of FEP dielectric polyimide jacket cables sintering furnace, this sintering furnace can ensure the smooth, smooth of FEP dielectric polyimide jacket cables sheath.
The technical scheme realizing above-mentioned purpose is: FEP dielectric polyimide jacket cables sintering furnace, it is characterized in that: comprise attemperating unit, outer tube and earthenware, the two ends of earthenware are connected with end cap, the center of earthenware two ends end cap is provided with the through hole for placing cable, described earthenware is coaxially arranged in outer tube, described earthenware outer wall is wound with electric furnace heating wire along its length, is filled with heat-insulation layer between earthenware and outer tube; Described attemperating unit is for controlling the sintering temperature in earthenware.
The length of described earthenware is 1.2-1.5m.
Described attemperating unit comprises temperature measuring set, temperature controller and contactor, described temperature measuring set is connected to earthenware, for measuring the temperature in earthenware, the signal output part of temperature measuring set connects temperature controller, the output of temperature controller connects the coil of contactor, the input of contactor connects power supply, and the output of contactor connects electric furnace heating wire.
When the present invention uses, by the temperature range in attemperating unit control earthenware at 580 °-620 °.
Present invention reduces the length in sintering region, eliminate round guide wheel, by sintering furnace Design of length at 1.2-1.5m rice, improve sintering temperature to 580 °-620 °, after making cable enter sintering furnace, heating makes its polyimide film winding wire be rapidly heated to the fusing point of glue rapidly, because FEP heat-conductive characteristic is poor, at short notice can not rapid temperature increases.So gone out sintering furnace at FEP cable before distortion to carry out Temperature fall thus the problem avoiding sintering warpage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, the present invention includes attemperating unit 1, outer tube 2 and earthenware 3, the length of earthenware 3 is 1.2-1.5m, the two ends of earthenware 3 are connected with end cap 4, the center of earthenware 3 two ends end cap 4 is provided with the through hole 5 for placing cable, earthenware 3 is coaxially arranged in outer tube 2, and earthenware 3 outer wall is wound with electric furnace heating wire 6 along its length, is filled with heat-insulation layer 7 between earthenware 3 and outer tube 2.
Attemperating unit 1 is for controlling in the scope of 580 °-620 ° by the temperature in earthenware 3, comprise temperature measuring set 8, temperature controller 9 and contactor 10, temperature measuring set 8 is connected to earthenware 3, for measuring the temperature in earthenware 3, the signal output part of temperature measuring set 8 connects temperature controller 9, the output of temperature controller 9 connects the coil of contactor 10, and the input of contactor 10 connects power supply, and the output of contactor 10 connects electric furnace heating wire 6.
Claims (3)
1.FEP dielectric polyimide jacket cables sintering furnace, it is characterized in that: comprise attemperating unit, outer tube and earthenware, the two ends of earthenware are connected with end cap, the center of earthenware two ends end cap is provided with the through hole for placing cable, described earthenware is coaxially arranged in outer tube, described earthenware outer wall is wound with electric furnace heating wire along its length, is filled with heat-insulation layer between earthenware and outer tube; Described attemperating unit is for controlling the sintering temperature in earthenware.
2. FEP dielectric polyimide jacket cables sintering furnace according to claim 1, is characterized in that: the length of described earthenware is 1.2-1.5m.
3. FEP dielectric polyimide jacket cables sintering furnace according to claim 1, it is characterized in that: described attemperating unit comprises temperature measuring set, temperature controller and contactor, described temperature measuring set is connected to earthenware, for measuring the temperature in earthenware, the signal output part of temperature measuring set connects temperature controller, the output of temperature controller connects the coil of contactor, and the input of contactor connects power supply, and the output of contactor connects electric furnace heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406796.5A CN104976901B (en) | 2015-07-13 | 2015-07-13 | FEP dielectric polyimide jacket cables sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406796.5A CN104976901B (en) | 2015-07-13 | 2015-07-13 | FEP dielectric polyimide jacket cables sintering furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104976901A true CN104976901A (en) | 2015-10-14 |
| CN104976901B CN104976901B (en) | 2016-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510406796.5A Active CN104976901B (en) | 2015-07-13 | 2015-07-13 | FEP dielectric polyimide jacket cables sintering furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN104976901B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270711A (en) * | 2017-06-22 | 2017-10-20 | 芜湖航天特种电缆厂股份有限公司 | Hot buffer-type sintering furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05266738A (en) * | 1992-03-18 | 1993-10-15 | Showa Electric Wire & Cable Co Ltd | Manufacture of laminated sheath cable and its manufacturing device |
| CN2291632Y (en) * | 1996-09-25 | 1998-09-16 | 夏重力 | Electric heating drum furnace for ferromagnetic material |
| CN200986384Y (en) * | 2006-05-15 | 2007-12-05 | 中国科学院上海硅酸盐研究所 | Rotary sintering furnace |
| CN201956108U (en) * | 2010-12-10 | 2011-08-31 | 久盛电气股份有限公司 | Heat-resisting and radiation-resisting cable and mould manufacturing same |
| CN204830856U (en) * | 2015-07-13 | 2015-12-02 | 扬州市德友线缆有限公司 | Insulating polyhybrid cover cable fritting furnace of FEP |
-
2015
- 2015-07-13 CN CN201510406796.5A patent/CN104976901B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05266738A (en) * | 1992-03-18 | 1993-10-15 | Showa Electric Wire & Cable Co Ltd | Manufacture of laminated sheath cable and its manufacturing device |
| CN2291632Y (en) * | 1996-09-25 | 1998-09-16 | 夏重力 | Electric heating drum furnace for ferromagnetic material |
| CN200986384Y (en) * | 2006-05-15 | 2007-12-05 | 中国科学院上海硅酸盐研究所 | Rotary sintering furnace |
| CN201956108U (en) * | 2010-12-10 | 2011-08-31 | 久盛电气股份有限公司 | Heat-resisting and radiation-resisting cable and mould manufacturing same |
| CN204830856U (en) * | 2015-07-13 | 2015-12-02 | 扬州市德友线缆有限公司 | Insulating polyhybrid cover cable fritting furnace of FEP |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270711A (en) * | 2017-06-22 | 2017-10-20 | 芜湖航天特种电缆厂股份有限公司 | Hot buffer-type sintering furnace |
| CN107270711B (en) * | 2017-06-22 | 2019-06-25 | 芜湖航天特种电缆厂股份有限公司 | Hot buffer-type sintering furnace |
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| Publication number | Publication date |
|---|---|
| CN104976901B (en) | 2016-11-02 |
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