CN101927545A - Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank - Google Patents
Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank Download PDFInfo
- Publication number
- CN101927545A CN101927545A CN 201010223779 CN201010223779A CN101927545A CN 101927545 A CN101927545 A CN 101927545A CN 201010223779 CN201010223779 CN 201010223779 CN 201010223779 A CN201010223779 A CN 201010223779A CN 101927545 A CN101927545 A CN 101927545A
- Authority
- CN
- China
- Prior art keywords
- overcoat
- insulating tube
- shielding
- metal sleeve
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Insulating Bodies (AREA)
Abstract
The invention discloses a mould and a method for manufacturing a shielding polytetrafluoroethylene insulating tube blank. The mould comprises an outer sleeve, a core rod, a lower pressing block, a metal sleeve, a baffle and an upper pressing block, wherein the outer sleeve is tubular; the core rod is arranged at the inner axis of the outer sleeve; the lower pressing block is positioned at a lower opening of the outer sleeve; the metal sleeve is arranged in an annular space between the outer sleeve and the core rod; the baffle is arranged at the upper end of the outer sleeve; and the upper pressing block is arranged at an upper opening of the outer sleeve. In the mould for manufacturing the shielding polytetrafluoroethylene insulating tube blank provided by the invention, the annular space between the outer sleeve and the core rod is partitioned into two parts by the metal sleeve, so that a double-layer tube can be manufactured by a one-step molding method during the production; and thus the production period can be greatly shortened and the production cost can be reduced. In addition, the mould has the advantages of simple structure and high practicability. Besides, a shielding polytetrafluoroethylene insulating tube manufactured by the method has a relatively low price, so the mould and the method can be applied to more occasions.
Description
Technical field
The present invention relates to a kind of tubing and process technology thereof, particularly relate to a kind of mould and method that is used to make shielding polytetrafluoroethylinsulating insulating tube blank.
Background technology
Because polytetrafluoroethylene (PTFE) is a kind of chemical raw material with excellent high and low temperature resistance and chemical stability, excellent electric insulating energy, non-adhesive, weatherability, anti-flammability and good self lubricity, therefore obtain extensive use in fields such as chemical industry, oil, weaving, electric, medical treatment and machineries.At present, normally use special-purpose blank mould that the polytetrafluoroethylene (PTFE) raw material is pressed into blank when using polytetrafluoroethylene (PTFE) to make polytetrafluoroethylinsulating insulating tube earlier, blank is placed on squeezes extrusion modling in the pipe then as raw material.But, because this polyfluortetraethylene pipe only has insulation characterisitic, and having the occasion that insulation characterisitic has shielding character for both requiring, this polytetrafluoroethylinsulating insulating tube just can't use.
Shielding polytetrafluoroethylinsulating insulating tube is the screen layer that has electric conductivity at outer setting one deck of polytetrafluoroethylinsulating insulating tube, and the screen layer role is shielding, isolation or ground connection in general.Shielding polytetrafluoroethylinsulating insulating tube is mainly used in laying of various electric power, control, communication line and diverse network circuit with specific (special) requirements.Owing to be provided with conductive screen layer; make shielding polytetrafluoroethylinsulating insulating tube except possessing the various physical properties that common polytetrafluoroethylinsulating insulating tube has; its outside conductive layer also has shielding and buffer action; thereby the protection of physics aspect not only can be provided the circuit that its inside is laid, the protection of electric field and aspect, magnetic field can also further be provided.
In addition, because shielding polytetrafluoroethylinsulating insulating tube has function of shielding, so it can also be as the conveyance conduit of carrying inflammable gas.An important problem is fire prevention and explosion-proof in inflammable gas production, storage and the course of conveying, among inflammable gas production, storage and course of conveying, gas flow can produce friction with pipeline, thereby on pipeline, produce a large amount of electrostatic charges, as not importing the electric charge of assembling on the pipeline underground by earthing or grounding means, a high potential will slowly be assembled and form to these electric charges on the pipeline, may not produce discharge spark if at this moment just do not process, thereby accident such as set off an explosion, catch fire.Therefore the conveyance conduit of inflammable gas must be taked reliable grounding measures, so that at any time the electric charge of self assembling is bled off.Because shielding polytetrafluoroethylinsulating insulating tube has conductive screen layer, the electric charge that is accumulated in just can be with pipeline when with shielding layer grounding bleeds off in time, thereby avoids setting off an explosion and accident such as catch fire, with assurance safety.The method of manufacturing shielding polytetrafluoroethylinsulating insulating tube commonly used is to coat the layer of metal net in the outside of polytetrafluoroethylinsulating insulating tube at present, but, the shortcoming of this way is: 1, extruding coats again because this pipe needs earlier, promptly needs two procedures just can finish, so cause production cost to raise; 2, the production cycle is long; 3, cause use occasion limited because of on the high side.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide low, with short production cycle and applied widely being used to of a kind of cost to make the mould and the method for shielding polytetrafluoroethylinsulating insulating tube blank.
In order to achieve the above object, the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention comprises overcoat, core bar, lower lock block, metal sleeve, baffle plate and upper holder block; Wherein overcoat is the pipe shape, is used to form die main body lateral outer structure; Core bar is arranged on the internal axis place of overcoat; Lower lock block is disc, and the center is formed with a circular hole that is used to run through the core bar lower end, is arranged on the lower ending opening place of overcoat; Metal sleeve is the pipe shape, is arranged in the annular space between overcoat and the core bar; Baffle plate is the dome shape, and the center is formed with a circular hole that is used to run through metal sleeve top, and external margin extends downwards and is formed with an edge, is arranged on the upper end of overcoat, is used for metal sleeve is supported and locatees; Upper holder block is identical with the structure of lower lock block, is arranged on the upper end open place of overcoat.
The thickness of described metal sleeve is 0.1-0.3mm, and height is identical with the height of overcoat.
Circularhole diameter on described lower lock block, the upper holder block equates with the external diameter of core bar.
Edge internal diameter on the described baffle plate equates with the external diameter of overcoat.
Circularhole diameter on the described baffle plate equates with the external diameter of metal sleeve.
Being used to of using that the invention described above provides, the mould of the making shielding polytetrafluoroethylinsulating insulating tube blank method of producing shielding polytetrafluoroethylinsulating insulating tube blank comprised the following step that carries out in order:
1) at first lower lock block is placed on the lower port place of overcoat, the lower end with core bar is inserted in the circular hole of lower lock block center then, and makes the lower surface of overcoat, lower lock block and core bar be in same horizontal plane;
2) metal sleeve is placed in the annular space between core bar and the overcoat, and the center of metal sleeve is overlapped with the center of core bar, the circular hole with the baffle plate center runs through the upper end of metal sleeve top bonnet at overcoat then;
3) the polytetrafluoroethylene (PTFE) raw material is filled up annular space between metal sleeve and the core bar;
4) take off baffle plate, will form and the polytetrafluoroethyl-ne-ne metal mixture that has been mixed fills up annular space between metal sleeve and the overcoat by polytetrafluoroethylene (PTFE) and metallic conduction material then;
5) metal sleeve is taken out from the upper port of overcoat, then upper holder block is placed on the upper port place of overcoat, exert pressure in the outside of upper holder block afterwards, and pressurize 1-20 minute, thereby above-mentioned raw materials is pressed into the shielding polytetrafluoroethylinsulating insulating tube blank that constitutes by teflon insulation internal layer and shield external layer;
6) take out upper holder block and above-mentioned shielding polytetrafluoroethylinsulating insulating tube blank successively from the upper end of overcoat, blank is placed on to squeeze to push in the pipe at last and promptly can be made into shielding polytetrafluoroethylinsulating insulating tube.
Described metallic conduction material comprises conductive carbon black.
The external pressure that applies on upper holder block in the described step 5) is 1-3Mpa,
The mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention is to utilize metal sleeve that the annular space between overcoat and the core bar is divided into two parts, just can utilize one-step moulding method to make bimetallic tube when producing like this, therefore can shorten the production cycle greatly, and can reduce production costs.In addition, this mould structure is simple, practical.In addition, because the shielding polytetrafluoroethylinsulating insulating tube price of utilizing this method to make is relatively low, so can be applied to more conditions.
Description of drawings
Fig. 1 utilizes the mould that is used for making shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention to produce shielding polytetrafluoroethylinsulating insulating tube blank process blowing vertical structure cutaway view during the stage.
Fig. 2 utilizes the mould that is used for making shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention to produce shielding polytetrafluoroethylinsulating insulating tube blank process vertical structure cutaway view during the pressure period.
The specific embodiment
Below in conjunction with the drawings and specific embodiments mould and the method that is used to make shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention is elaborated.
As shown in Figure 1 and Figure 2, the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank provided by the invention comprises overcoat 1, core bar 2, lower lock block 3, metal sleeve 4, baffle plate 5 and upper holder block 8; Wherein overcoat 1 is the pipe shape, is used to form die main body lateral outer structure; Core bar 2 is arranged on the internal axis place of overcoat 1; Lower lock block 3 is disc, and the center is formed with a circular hole that is used to run through core bar 2 lower ends, is arranged on the lower ending opening place of overcoat 1; Metal sleeve 4 is the pipe shape, is arranged in the annular space between overcoat 1 and the core bar 2; Baffle plate 5 is the dome shape, and the center is formed with a circular hole that is used to run through metal sleeve 4 tops, and external margin extends downwards and is formed with an edge, is arranged on the upper end of overcoat 1, is used for metal sleeve 4 is supported and locatees; Upper holder block 8 is identical with the structure of lower lock block 3, is arranged on the upper end open place of overcoat 1.
The thickness of described metal sleeve 4 is 0.1-0.3mm, and height is identical with the height of overcoat 1.
Circularhole diameter on described lower lock block 3, the upper holder block 8 equates with the external diameter of core bar 2.
Edge internal diameter on the described baffle plate 5 equates with the external diameter of overcoat 1, can prevent that like this baffle plate 5 produces displacement in the upper end of overcoat 1.
Circularhole diameter on the described baffle plate 5 equates with the external diameter of metal sleeve 4.
Being used to of using that the invention described above provides, the mould of the making shielding polytetrafluoroethylinsulating insulating tube blank method of producing shielding polytetrafluoroethylinsulating insulating tube blank comprised the following step that carries out in order:
1) at first lower lock block 3 is placed on the lower port place of overcoat 1, the lower end with core bar 2 is inserted in the circular hole of lower lock block 3 centers then, and makes the lower surface of overcoat 1, lower lock block 3 and core bar 2 be in same horizontal plane;
2) metal sleeve 4 is placed in the annular space between core bar 2 and the overcoat 1, and the center of metal sleeve 4 is overlapped with the center of core bar 2, the circular hole with baffle plate 5 centers runs through the upper end of metal sleeve 4 top bonnets at overcoat 1 then;
3) polytetrafluoroethylene (PTFE) raw material 6 is filled up annular space between metal sleeve 4 and the core bar 2, the effect of baffle plate 5 is to prevent that polytetrafluoroethylene (PTFE) raw material 6 from entering the annular space between metal sleeve 4 and the overcoat 1;
4) take off baffle plate 5, will form and the polytetrafluoroethyl-ne-ne metal mixture 7 that has been mixed fills up annular space between metal sleeve 4 and the overcoat 1 by polytetrafluoroethylene (PTFE) and metallic conduction material then;
5) metal sleeve 4 is taken out from the upper port of overcoat 1, then upper holder block 8 is placed on the upper port place of overcoat 1, exert pressure in the outside of upper holder block 8 afterwards, and pressurize 1-20 minute, thereby above-mentioned raw materials is pressed into the shielding polytetrafluoroethylinsulating insulating tube blank that constitutes by teflon insulation internal layer and shield external layer;
6) take out upper holder block 8 and above-mentioned shielding polytetrafluoroethylinsulating insulating tube blank successively from the upper end of overcoat 1, blank is placed on to squeeze to push in the pipe at last and promptly can be made into shielding polytetrafluoroethylinsulating insulating tube.
Described metallic conduction material comprises conductive carbon black.
The external pressure that applies on upper holder block 8 in the described step 5) is 1-3Mpa, and concrete pressure needs decide according to the size of mould, when mold height during less than 100mm pressurize got final product in 1 minute, and when mold height need pressurize 20 minutes during for 800mm.
Claims (8)
1. a mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank is characterized in that: described die coat (1), core bar (2), lower lock block (3), metal sleeve (4), baffle plate (5) and the upper holder block (8) of comprising; Wherein overcoat (1) is the pipe shape, is used to form die main body lateral outer structure; Core bar (2) is arranged on the internal axis place of overcoat (1); Lower lock block (3) is disc, and the center is formed with a circular hole that is used to run through core bar (2) lower end, is arranged on the lower ending opening place of overcoat (1); Metal sleeve (4) is the pipe shape, is arranged in the annular space between overcoat (1) and the core bar (2); Baffle plate (5) is the dome shape, and the center is formed with a circular hole that is used to run through metal sleeve (4) top, and external margin extends downwards and is formed with an edge, is arranged on the upper end of overcoat (1), is used for metal sleeve (4) is supported and locatees; Upper holder block (8) is identical with the structure of lower lock block (3), is arranged on the upper end open place of overcoat (1).
2. the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank according to claim 1 is characterized in that: the thickness of described metal sleeve (4) is 0.1-0.3mm, and (1 height is identical with overcoat for height.
3. the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank according to claim 1 is characterized in that: the Circularhole diameter on described lower lock block (3), the upper holder block (8) equates with the external diameter of core bar (2).
4. the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank according to claim 1, the edge internal diameter on the described baffle plate (5) equates with the external diameter of overcoat (1).
5. the mould that is used to make shielding polytetrafluoroethylinsulating insulating tube blank according to claim 1, the Circularhole diameter on the described baffle plate (5) equates with the external diameter of metal sleeve (4).
6. method of using the described mould of claim 1 to make shielding polytetrafluoroethylinsulating insulating tube blank, it is characterized in that: described method comprises the following step that carries out in order:
1) at first lower lock block (3) is placed on the lower port place of overcoat (1), the lower end with core bar (2) is inserted in the circular hole of lower lock block (3) center then, and makes the lower surface of overcoat (1), lower lock block (3) and core bar (2) be in same horizontal plane;
2) metal sleeve (4) is placed in the annular space between core bar (2) and the overcoat (1), and the center of metal sleeve (4) is overlapped with the center of core bar (2), the circular hole with baffle plate (5) center runs through the upper end of metal sleeve (4) top bonnet in overcoat (1) then;
3) polytetrafluoroethylene (PTFE) raw material (6) is filled up annular space between metal sleeve (4) and the core bar (2);
4) take off baffle plate (5), will form and the polytetrafluoroethyl-ne-ne metal mixture (7) that has been mixed fills up annular space between metal sleeve (4) and the overcoat (1) by polytetrafluoroethylene (PTFE) and metallic conduction material then;
5) metal sleeve (4) is taken out from the upper port of overcoat (1), then upper holder block (8) is placed on the upper port place of overcoat (1), exert pressure in the outside of upper holder block (8) afterwards, and pressurize 1-20 minute, thereby above-mentioned raw materials is pressed into the shielding polytetrafluoroethylinsulating insulating tube blank that constitutes by teflon insulation internal layer and shield external layer;
6) take out upper holder block (8) and above-mentioned shielding polytetrafluoroethylinsulating insulating tube blank successively from the upper end of overcoat (1), blank is placed on to push in the crowded pipe at last and promptly can be made into shielding polytetrafluoroethylinsulating insulating tube.
7. the method for manufacturing shielding polytetrafluoroethylinsulating insulating tube blank according to claim 6 is characterized in that: described metallic conduction material comprises conductive carbon black.
8. the method for manufacturing shielding polytetrafluoroethylinsulating insulating tube blank according to claim 6 is characterized in that: the external pressure that applies on upper holder block (8) in the described step 5) is 1-3Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010223779 CN101927545A (en) | 2010-07-12 | 2010-07-12 | Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010223779 CN101927545A (en) | 2010-07-12 | 2010-07-12 | Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101927545A true CN101927545A (en) | 2010-12-29 |
Family
ID=43367109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010223779 Pending CN101927545A (en) | 2010-07-12 | 2010-07-12 | Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101927545A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009536A (en) * | 2012-12-30 | 2013-04-03 | 南京肯特复合材料有限公司 | Hollow polytetrafluoroethylene (PTFE) part production device for embedded ring magnet |
| CN104553002A (en) * | 2014-12-29 | 2015-04-29 | 东莞市科雷明斯密封科技有限公司 | Method for automatically forming polytetrafluoroethylene tube and equipment |
| CN107584740A (en) * | 2017-09-29 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of production method of steel lining polytetrafluoroethyltubing tubing |
| CN107584741A (en) * | 2017-09-29 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of production method of steel lining polypropylene pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032335A (en) * | 1989-07-12 | 1991-07-16 | Mather Seal Company | Manufacture of sealing elements of composite sintered polymeric material |
| CN2315403Y (en) * | 1997-11-12 | 1999-04-21 | 浙江佑利工程塑料管道总厂 | Anti-static plastic pipe |
-
2010
- 2010-07-12 CN CN 201010223779 patent/CN101927545A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032335A (en) * | 1989-07-12 | 1991-07-16 | Mather Seal Company | Manufacture of sealing elements of composite sintered polymeric material |
| CN2315403Y (en) * | 1997-11-12 | 1999-04-21 | 浙江佑利工程塑料管道总厂 | Anti-static plastic pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009536A (en) * | 2012-12-30 | 2013-04-03 | 南京肯特复合材料有限公司 | Hollow polytetrafluoroethylene (PTFE) part production device for embedded ring magnet |
| CN103009536B (en) * | 2012-12-30 | 2015-04-08 | 南京肯特复合材料有限公司 | Hollow polytetrafluoroethylene (PTFE) part production device for embedded ring magnet |
| CN104553002A (en) * | 2014-12-29 | 2015-04-29 | 东莞市科雷明斯密封科技有限公司 | Method for automatically forming polytetrafluoroethylene tube and equipment |
| CN107584740A (en) * | 2017-09-29 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of production method of steel lining polytetrafluoroethyltubing tubing |
| CN107584741A (en) * | 2017-09-29 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of production method of steel lining polypropylene pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101340035B (en) | Adapter, cable connector having the adapter and cable connector component | |
| CN101927545A (en) | Mould and method for manufacturing shielding polytetrafluoroethylene insulating tube blank | |
| CN103544998B (en) | A kind of novel glass for double containment or ceramic post sintering electrical penetration | |
| CN103753822B (en) | A kind of one-body molded production method of multilayer polytetrafluoroethylarticles pipe | |
| CN204732189U (en) | The soft Teflon coaxial cable of PTFE with wrapped sheath | |
| CN205565613U (en) | Epoxy dry -type wall bushing | |
| CN104270843B (en) | Nonmetal internal spray type electric heating tube | |
| CN204725782U (en) | A kind of fused pipe mold | |
| CN207336887U (en) | A kind of optical cable fall arrest support device | |
| CN201655721U (en) | High-voltage protective tube component for ozone generator | |
| CN101930816A (en) | Special type coaxial cable and manufacturing process thereof | |
| CN211398956U (en) | High leakproofness reliability fluoroplastic joint design | |
| CN203460410U (en) | PE (polyethylene) pipe extruding mold with bush respectively arranged on mandrel and extrusion die | |
| CN202521120U (en) | Electro-thermal melting pipeline connecting piece | |
| CN206657680U (en) | A kind of double jacket insulation | |
| CN202550462U (en) | Outdoor cable chilling shrinkage terminal | |
| CN209434857U (en) | A kind of transparent pyrocondensation sealing cap | |
| CN203398736U (en) | Cross-linked cable intermediate joint protection casing | |
| CN203351300U (en) | Composite insulator for high voltage fuse | |
| CN105938980A (en) | Recyclable contact box | |
| CN201435261Y (en) | Special coaxial cable | |
| CN204257359U (en) | Capacitance type potential transformer mesolow extraction tube | |
| CN204333408U (en) | A kind of novel bent type radio frequency coaxial connector Snap ring structure | |
| CN204089138U (en) | A kind of 35 kilovolts of cold-contraction type inside cable terminals | |
| CN203841123U (en) | High-compatibility E-cigarette atomizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101229 |