CN202677972U - Short-crimping-shaped aluminum-foil longitudinal wrapping mould for tri-shielded coaxial cable - Google Patents
Short-crimping-shaped aluminum-foil longitudinal wrapping mould for tri-shielded coaxial cable Download PDFInfo
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- CN202677972U CN202677972U CN 201220163135 CN201220163135U CN202677972U CN 202677972 U CN202677972 U CN 202677972U CN 201220163135 CN201220163135 CN 201220163135 CN 201220163135 U CN201220163135 U CN 201220163135U CN 202677972 U CN202677972 U CN 202677972U
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- aluminium foil
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Abstract
The utility model relates to a short-crimping-shaped aluminum-foil longitudinal wrapping mould for producing a tri-shielded coaxial cable. The technical problem to be solved is to provide a mould which can effectively realize a short-crimping-shaped aluminum-foil wrapping structure and has the advantages of simple structure and easy production. The technical scheme is that, the short-crimping-shaped aluminum-foil longitudinal wrapping mould for the tri-shielded coaxial cable comprises a mould which is a vertically arranged metal plate, wherein the bottom of the metal plate is a plane with guiding grooves arranged on the left and right sides, the rims on the left and right sides of the metal plate are gradually folded inwards from bottom to top in opposite directions so as to form a semicircle, and folded to the rims on two sides of an upper portion of the metal plate and mutually overlapped to from a circle, leaving a gap between the rims on the two sides. The mould is characterized in that, the overlapped rim on one side of the upper portion of the metal plate is reflexed outwards by 180 degrees and a crimping having a certain width is formed; the width of the crimping is 1-3 mm.
Description
Technical field
The utility model relates to a kind of cable mold, especially makes the short crimping shape mould for longitudinal wrapping of aluminium foil that three screened coaxial cables are used.
Background technology
Along with the development of CATV, CCTV technology, people have proposed high requirement to the stability of CATV, the operation of CCTV network system.Usually the key that affects the communication system transmission quality is the shielding properties of cable; The cable shield poor performance, the transmission quality of the direct reduction of meeting system.Especially current, television channel constantly increases, and the shielding properties of cable just more seems important (the shielding properties index of coaxial cable represents with shielding attenuation and transfger impedance).For the coaxial cable of braiding structure, the shield effectiveness of conventional braiding+aluminium foil structure is: 5-1000MHz 〉=85db; If want that continuing to improve shield effectiveness just must must increase count, or adopt four shielding even higher shielding constructions, but will improve like this manufacturing cost of cable.People find to adopt the rate of putting up greatly " short crimping " shape aluminium foil clad structure (shown in Figure 5) by research, can make cable obtain best shield effectiveness.But traditional mould for longitudinal wrapping of aluminium foil is simple in structure, only can make aluminium foil be overmolding to figure six (shown in Figure 6), can't guarantee that aluminium foil is bundled into stable " short crimping " shape by vertical.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that overcomes the above-mentioned background technology, a kind of improvement of cable mould for longitudinal wrapping of aluminium foil is provided, this mould should be able to effectively be realized the aluminium foil clad structure of " short crimping " shape, and has simple in structure, the easy characteristics of making.
The technical solution adopted in the utility model is: the short crimping shape mould for longitudinal wrapping of aluminium foil of three screened coaxial cables, comprising mould be the metallic plate of vertically arranging, the bottom of metallic plate is plane and the left and right sides is gathering sill, the edge, the left and right sides of metallic plate also from bottom to top is converted into semicircle in opposite directions gradually, form to the top dual-side of metallic plate along mutual imbrication overlap joint circle and dual-side along between leave certain slit; It is characterized in that the flanging of one fixed width is formed behind 180 degree of reflexed outward by a side of imbrication at metallic plate top.
The width of described flanging is 1-3mm.
Operation principle of the present utility model is: smooth aluminium foil is steadily pulled out from aluminum foil coil, then enter from bottom of the present utility model again with heart yearn (structure of heart yearn adds the outside insulating barrier that coats of upper conductor by conductor and forms), then the gathering sill along these utility model both sides continues up to advance, and naturally is shaped to circular shape and is coated on the heart yearn surface; Continue afterwards upwards to advance, through this die tip end; Because die tip has been shaped with flanging, so when aluminium foil passes through mould fully, one side edge just forms stable short bead structure and is coated on the heart yearn along flanging.
The beneficial effects of the utility model are: the mould that provides can form " short crimping " structure of aluminium foil effectively, and then has significantly improved the shield effectiveness of cable; And can also guarantee the coating quality of aluminium foil, and eliminated fully that aluminium foil that existing mold occurs is easily alternately put up and aluminium foil is wrinkling, fractureed, the bottom pour ladle phenomenon, increased the coating tightness of aluminium foil, reached the requirement of high return loss ripple.In addition, the utility model is simple in structure, making is easy, and cost of manufacture and production run cost all without impact, have obvious economic benefit.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is that S among Fig. 1 is to the structure for amplifying schematic diagram.
Fig. 3 is the A section structure for amplifying schematic diagram among Fig. 1.
Fig. 4 is the broken section structural representation of Fig. 3.
Fig. 5 is the short bead structure schematic diagram of aluminium foil.
Fig. 6 is the clad structure schematic diagram of existing aluminium foil.
Embodiment
The aluminium foil structure that coats in the existing cable is (cross-sectional structure as shown in Figure 6; The heart yearn that wherein coats does not omit and draws), be the figure six structure.The conventional structure of aluminium foil be mould compound one deck on the basic substrate layer 10 as thin as a wafer the aluminium foil layer 11(of (3-5 nm) to increase the intensity of aluminium foil layer); Because moulding basic substrate layer is insulating barrier, so the dual-side of existing aluminium foil does not have tight coating (metal level on dual-side edge is overlap joint not) along imbrication position metal level, cause screen to form the leak of certain interval.
Improved aluminium foil structure is (cross-sectional structure as shown in Figure 5; The heart yearn that wherein coats does not omit and draws), be " short crimping " shape structure; Wherein mould basic substrate layer towards the external diameter direction.As seen, dual-side is along the complete tight coating (metal level on dual-side edge overlaps mutually) of imbrication position metal level, so shielding properties significantly improves among the figure.
For cooperating the aluminium foil of making above-mentioned " short crimping " shape structure, the mould structure that the utility model provides is: comprising the metallic plate 1 of mould for vertically arranging, the bottom of metallic plate is plane and the left and right sides is gathering sill 1-1, the edge, the left and right sides of metallic plate also from bottom to top is converted into semicircle in opposite directions gradually, form to the top dual-side of metallic plate along mutual imbrication overlap joint circle and dual-side along between leave certain slit.Also welding the metallic plate 2 that is used for installation on this mould.Said structure is all identical with existing mold.
Improvement of the present utility model is (from Fig. 2 and Fig. 4 as seen): metallic plate is formed the flanging 1-21 of one fixed width by a side of imbrication behind reflexed 180 degree outward along 1-2, then this side along again with the equidirectional arrangement in the edge of opposite side metallic plate; So just can make aluminium foil be configured as reliably " short crimping " structure.
The width of described flanging is recommended as 1-3mm.
Claims (2)
1. three screened coaxial cables usefulness is lacked crimping shape mould for longitudinal wrapping of aluminium foil, comprising mould (1) be the metallic plate of vertically arranging, the bottom of metallic plate is plane and the left and right sides is gathering sill (1-1), the edge, the left and right sides of metallic plate also from bottom to top is converted into semicircle in opposite directions gradually, form to the top dual-side of metallic plate along mutual imbrication overlap joint circle and dual-side along between leave certain slit; It is characterized in that metallic plate is formed the flanging (1-21) of one fixed width outward behind reflexed 180 degree along (1-2) by a side of imbrication.
2. three screened coaxial cables usefulness according to claim 1 is lacked crimping shape mould for longitudinal wrapping of aluminium foil, and the width that it is characterized in that described flanging is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163135 CN202677972U (en) | 2012-04-17 | 2012-04-17 | Short-crimping-shaped aluminum-foil longitudinal wrapping mould for tri-shielded coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163135 CN202677972U (en) | 2012-04-17 | 2012-04-17 | Short-crimping-shaped aluminum-foil longitudinal wrapping mould for tri-shielded coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677972U true CN202677972U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220163135 Expired - Fee Related CN202677972U (en) | 2012-04-17 | 2012-04-17 | Short-crimping-shaped aluminum-foil longitudinal wrapping mould for tri-shielded coaxial cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN202677972U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106983A (en) * | 2013-03-13 | 2013-05-15 | 常熟市谷雷特机械产品设计有限公司 | Preforming mold for longitudinal wrapping of cable metal strap |
| CN104217826A (en) * | 2014-09-26 | 2014-12-17 | 中利科技集团股份有限公司 | Composite longitudinal wrap die for unit shield cable |
| CN109065271A (en) * | 2018-09-11 | 2018-12-21 | 舟山市7412工厂 | A kind of cable shield aluminium foil coating mould |
| CN114822974A (en) * | 2022-04-24 | 2022-07-29 | 深圳讯诺科技有限公司 | High-speed core wire and cable |
| CN117095879A (en) * | 2023-10-20 | 2023-11-21 | 浙江元通线缆制造有限公司 | Longitudinal wrapping equipment and cable longitudinal wrapping process |
-
2012
- 2012-04-17 CN CN 201220163135 patent/CN202677972U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106983A (en) * | 2013-03-13 | 2013-05-15 | 常熟市谷雷特机械产品设计有限公司 | Preforming mold for longitudinal wrapping of cable metal strap |
| CN103106983B (en) * | 2013-03-13 | 2015-04-08 | 常熟市谷雷特机械产品设计有限公司 | Preforming mold for longitudinal wrapping of cable metal strap |
| CN104217826A (en) * | 2014-09-26 | 2014-12-17 | 中利科技集团股份有限公司 | Composite longitudinal wrap die for unit shield cable |
| CN104217826B (en) * | 2014-09-26 | 2016-05-11 | 中利科技集团股份有限公司 | A kind of unit compound longitudinal covering model tool for shielded cable |
| CN109065271A (en) * | 2018-09-11 | 2018-12-21 | 舟山市7412工厂 | A kind of cable shield aluminium foil coating mould |
| CN114822974A (en) * | 2022-04-24 | 2022-07-29 | 深圳讯诺科技有限公司 | High-speed core wire and cable |
| CN114822974B (en) * | 2022-04-24 | 2024-02-06 | 深圳讯诺科技有限公司 | High-speed core wire and cable |
| CN117095879A (en) * | 2023-10-20 | 2023-11-21 | 浙江元通线缆制造有限公司 | Longitudinal wrapping equipment and cable longitudinal wrapping process |
| CN117095879B (en) * | 2023-10-20 | 2024-02-20 | 浙江元通线缆制造有限公司 | Longitudinal wrapping equipment and cable longitudinal wrapping process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |