CN111383805A

CN111383805A - S-shaped longitudinal wrapping mold and longitudinal wrapping method for shielded cable

Info

Publication number: CN111383805A
Application number: CN202010213099.9A
Authority: CN
Inventors: 白华; 雷鸣; 郭洪伟; 甘多夫
Original assignee: Belden Hirschmann Industries Suzhou Co Ltd
Current assignee: Belden Hirschmann Industries Suzhou Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-07-07

Abstract

The invention discloses an S-shaped longitudinal wrapping mold and a longitudinal wrapping method for shielding a cable, wherein the S-shaped longitudinal wrapping mold for shielding the cable comprises the cable, a first mold, a second mold, a third mold and a fourth mold, the cable comprises an outer quilt, a first core wire, a second core wire, a third core wire and a fourth core wire are arranged inside the outer quilt, first forming holes, second forming holes, third forming holes and fourth forming holes are formed in the surfaces of the first mold, the second mold and the third mold, aluminum foil forming grooves are formed in the surfaces of the first mold, the second mold, the third mold and the fourth mold, and fifth forming holes and sixth forming holes are formed in the surface of the fourth mold.

Description

S-shaped longitudinal wrapping mold and longitudinal wrapping method for shielded cable

Technical Field

The invention relates to the technical field of cables, in particular to an S-shaped longitudinal wrapping mold and a longitudinal wrapping method for shielding a cable.

Background

In the current shielding cable manufacturing industry, in order to meet the electrical performance requirements, in particular to high-end network communication cable products (CAT6A and CAT7), the structural design basically adopts a single pair of core wires to twist in pair to wrap an aluminum foil, and the assembly cable is wrapped or longitudinally wrapped with an aluminum foil shielding/aluminum foil mylar tape, as shown in figure 1, a first core wire (2), a second core wire (3), a third core wire (4) and a fourth core wire (5) are arranged inside an outer cover (1), and a layer of aluminum foil layer (6) is respectively wrapped outside the first core wire (2), the second core wire (3), the third core wire (4) and the fourth core wire (5), so that the production method has a simple process, and can achieve the corresponding shielding effect only by respectively wrapping or wrapping the aluminum foil shielding in pair twisting and assembly cables, but from the current development trend, the smaller the cables are, the higher and the higher transmission performance is, and the competition industry is more and more intense, the cost control of cable manufacture is very important, and the two processes of the existing production method respectively use aluminum foil shielding, so that the following defects and shortcomings exist: the quality problem of aluminum foil scratch of the trailing aluminum foil during single-pair wire pair twisting is solved, and the signal leakage can be caused by the aluminum foil scratch, so that the electrical performance of the wire is influenced; in the existing method, four pairs of twisted wires are respectively wrapped with aluminum foils in a dragging mode, and the twisted wires are formed and cannot be adjusted in the production process of the subsequent procedure, so that the structure of the assembly cable is not round and compact enough in the twisting process; the pair twisting and cabling processes both need to use aluminum foils, corresponding tape wrapping machines are required to be arranged on the equipment, the consumption of the aluminum foils is large, and the cost is high; in the pair twisting process, the aluminum foil is dragged to wrap so as to ensure the problem of scratching of the overlapping rate of the wrapping of the aluminum foil, the production speed is slow, the efficiency is low, and the working time cost is high; because all there is the aluminium foil layer inside and outside, whole cable external diameter can be on the large side, and the whole compliance of cable is not good enough simultaneously, and to shielding network communication cable, the wire rod that needs is more soft better in the construction of two big application occasions of comprehensive wiring and wire jumper and use.

Disclosure of Invention

The invention aims to provide an S-shaped longitudinal wrapping mold and a longitudinal wrapping method for a shielded cable, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a package mould is indulged to "S" type for shielding cable, includes cable, a mould, No. two moulds, No. three moulds and No. four moulds, the cable is including outer quilt, outer by inside be provided with a heart yearn, No. two heart yearns, No. three heart yearns and No. four heart yearns, first shaping hole, second shaping hole, third shaping hole, fourth shaping hole have all been seted up on a mould, No. two moulds, No. three moulds and No. four mould surfaces, No. four mould surfaces have all seted up the aluminium foil shaping groove, No. four mould surfaces have seted up fifth shaping hole and sixth shaping hole.

Preferably, the first forming hole corresponds to a first core wire, the second forming hole corresponds to a second core wire, the third forming hole corresponds to a third core wire, and the fourth forming hole corresponds to a fourth core wire.

Preferably, the areas of the fifth forming hole and the sixth forming hole are larger than the areas of the first forming hole, the second forming hole, the third forming hole and the fourth forming hole.

Preferably, the fifth forming hole corresponds to the first core wire and the second core wire, and the sixth forming hole corresponds to the third core wire and the fourth core wire.

Preferably, the radians of the aluminum foil forming grooves on the surfaces of the first mold, the second mold, the third mold and the fourth mold are sequentially increased.

Preferably, the section of the aluminum foil forming groove on the fourth mold is S-shaped.

An S-shaped longitudinal wrapping method for a shielded cable comprises the following steps:

s1, sequentially installing a first mold, a second mold, a third mold and a fourth mold on a mold base;

s2, sequentially passing the four pairs of twisted wires of the first core wire, the second core wire, the third core wire and the fourth core wire through the forming holes on the first die, the second die, the third die and the fourth die, and enabling the forming holes to correspond to the core wires one by one;

s3, sequentially passing the aluminum foil through aluminum foil forming grooves on the first mold, the second mold, the third mold and the fourth mold;

s4, adjusting the distance between the dies, setting a proper cabling pitch, forming a stranding semi-finished product into an S shape in sequence after the start-up pitch is formed in the cabling process, finally, restraining by an aluminum foil forming groove on the die II, completely wrapping four pairs of stranded wires by an aluminum foil to form 360-degree shielding, and finally forming an S shape on the cross section of the cable structure with the core wires wrapped by the aluminum foil.

Preferably, the aluminum foil is paid out using an active pay-out tractor-packager.

Compared with the prior art, the invention has the beneficial effects that:

1. because the single pair of wires does not need to be wrapped by the aluminum foil, the risk of scraping the aluminum foil in the pair twisting process is avoided, the quality problem is less, and the generation of scrapped products can be reduced;

2. when the four pairs of wires simultaneously pass through the S-shaped die, the 2 pairs of wires are respectively arranged at the upper position and the lower position, and the whole twisted semi-finished product can reach a round and compact state only by respectively adjusting the positions and the tensions of the 2 pairs of wires, so that the adjustment on the cable forming process is simpler and more convenient;

3. the twisting procedure does not need to drag and wrap aluminum foils, the investment of the aluminum foils in the twisting procedure does not need to be increased for common 4-pair network communication shielding cables, and an expensive dragging and wrapping machine device does not need to be additionally added for a twisting machine, so that the total cost of the cable can be remarkably reduced, and the cable can have competitive advantages;

4. the pair twisting production process is simplified, the pair twisting speed can be improved, and the working time cost is greatly reduced after the pair twisting speed is improved because the pitches involved in the shielding network communication cable are very small;

5. because the aluminum foil of the twisted pair layer is reduced, the whole cable is softer, the use is more convenient for users, and the time is saved when a constructor lays wires;

6. for the partially single-shielded network communication cable, the S-shaped die is used for production, only the crosstalk between two pairs (a first core wire and a second core wire, a third core wire and a fourth core wire) is required to be considered in the structural design of the cable, the crosstalk between 4 pairs is not required to be considered, the original 4 pitches of the four pairs are optimized into 2 pitches of the four pairs, meanwhile, in the manufacturing process, the reduction of the pitches can also reduce the quality problem, and the production quality of the whole cable is greatly improved.

Drawings

Fig. 1 is a schematic structural view of a conventional shielded wire cable;

FIG. 2 is a schematic structural diagram of a cable processed by an "S" -shaped longitudinal wrapping and longitudinal wrapping method for shielding the cable;

FIG. 3 is a schematic structural view of an "S" -shaped longitudinal covering mold for shielding cables in use;

FIG. 4 is a schematic structural diagram of a mold I of an S-shaped longitudinal covering mold for shielding cables;

FIG. 5 is a schematic structural diagram of a second mold in an "S" -shaped longitudinal covering mold for shielding cables;

FIG. 6 is a schematic structural diagram of a third mold in an "S" -shaped longitudinal covering mold for shielding cables;

fig. 7 is a schematic structural diagram of a fourth mold in an "S" type longitudinal covering mold for shielding cables.

In the figure: 1-outer cover, 2-core wire, 3-core wire, 4-core wire, 5-core wire, 6-aluminum foil layer, 7-first mold, 8-second mold, 9-third mold, 10-fourth mold, 11-aluminum foil forming groove, 12-first forming hole, 13-second forming hole, 14-third forming hole, 15-fourth forming hole, 16-fifth forming hole and 17-sixth forming hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a package mould is indulged to "S" type for shielding cable, includes cable, a mould 7, No. two moulds 8, No. three moulds 9 and No. four moulds 10, the cable is including outer by 1, 1 inside heart yearn 2, No. two heart yearns 3, No. three heart yearn 4 and No. four heart yearns 5 of being provided with of outer by, first shaping hole 12, second shaping hole 13, third shaping hole 14, fourth shaping hole 15 have all been seted up on a mould 7, No. two moulds 8, No. three moulds 9 and No. four moulds 10 surfaces, aluminium foil shaping groove 11 has all been seted up on a mould 7, No. two moulds 8, No. three moulds 9 and No. four moulds 10 surfaces, No. four moulds 10 surfaces have been seted up fifth shaping hole 16 and sixth shaping hole 17.

The first forming hole 12 corresponds to the first core wire 2, the second forming hole 13 corresponds to the second core wire 3, the third forming hole 14 corresponds to the third core wire 4, and the fourth forming hole 14 corresponds to the fourth core wire 5.

The areas of the fifth forming hole 16 and the sixth forming hole 17 are larger than the areas of the first forming hole 12, the second forming hole 13, the third forming hole 14 and the fourth forming hole 15.

The fifth forming hole 16 corresponds to the first core wire 2 and the second core wire 3, and the sixth forming hole 17 corresponds to the third core wire 4 and the fourth core wire 5.

The radian of the aluminum foil forming grooves 11 on the surfaces of the first mold 7, the second mold 8, the third mold 9 and the fourth mold 10 is increased in sequence.

The section of the aluminum foil forming groove 11 on the fourth mold 10 is S-shaped.

s1, sequentially installing a first die 7, a second die 8, a third die 9 and a fourth die 10 on a die holder;

s2, sequentially passing four pairs of twisted wires of the first core wire 2, the second core wire 3, the third core wire 4 and the fourth core wire 5 through the forming holes in the first mold 7, the second mold 8, the third mold 9 and the fourth mold 10, and enabling the forming holes to correspond to the core wires one by one;

s3, sequentially passing the aluminum foil through the aluminum foil forming grooves 11 on the first mold 7, the second mold 8, the third mold 9 and the fourth mold 10;

s4, adjusting the distance between the dies, setting a proper cabling pitch, forming a start pitch in the cabling process, enabling the stranded semi-finished products to be S-shaped in sequence, finally, restraining by an aluminum foil forming groove 11 on the fourth die 10, completely wrapping four pairs of stranded wires by an aluminum foil to form 360-degree shielding, and finally forming an S-shaped section of the cable structure with the core wires wrapped by the aluminum foil.

The aluminum foil is paid off using an active pay-off tractor-packager.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a mould is indulged to "S" type for shielding cable, includes cable, a mould (7), No. two moulds (8), No. three moulds (9) and No. four moulds (10), its characterized in that: the cable is including outer quilt (1), outer quilt (1) inside is provided with heart yearn (2), No. two heart yearns (3), No. three heart yearns (4) and No. four heart yearns (5), first shaping hole (12), second shaping hole (13), third shaping hole (14), fourth shaping hole (15) have all been seted up on a mould (7), No. two moulds (8), No. three mould (9) and No. four mould (10) surfaces have all been seted up aluminium foil shaping groove (11), No. four mould (10) surfaces have been seted up fifth shaping hole (16) and sixth shaping hole (17).

2. The "S" -shaped longitudinal covering mold for shielded cables of claim 1, wherein: the first forming hole (12) corresponds to a first core wire (2), the second forming hole (13) corresponds to a second core wire (3), the third forming hole (14) corresponds to a third core wire (4), and the fourth forming hole (14) corresponds to a fourth core wire (5).

3. The "S" -shaped longitudinal covering mold for shielded cables of claim 1, wherein: the areas of the fifth forming hole (16) and the sixth forming hole (17) are larger than the areas of the first forming hole (12), the second forming hole (13), the third forming hole (14) and the fourth forming hole (15).

4. The "S" -shaped longitudinal covering mold for shielded cables of claim 1, wherein: the fifth forming hole (16) corresponds to the first core wire (2) and the second core wire (3), and the sixth forming hole (17) corresponds to the third core wire (4) and the fourth core wire (5).

5. The "S" -shaped longitudinal covering mold for shielded cables of claim 1, wherein: the radian of the aluminum foil forming grooves (11) on the surfaces of the first mold (7), the second mold (8), the third mold (9) and the fourth mold (10) is increased in sequence.

6. The "S" -shaped longitudinal covering mold for shielded cables of claim 1, wherein: the section of the aluminum foil forming groove (11) on the fourth mold (10) is S-shaped.

7. An S-shaped longitudinal wrapping method for a shielded cable is characterized in that: the method comprises the following steps:

s1, sequentially installing a first die (7), a second die (8), a third die (9) and a fourth die (10) on a die holder;

s2, sequentially passing four pairs of twisted wires of the first core wire (2), the second core wire (3), the third core wire (4) and the fourth core wire (5) through forming holes in a first mold (7), a second mold (8), a third mold (9) and a fourth mold (10), and enabling the forming holes to correspond to the core wires one by one;

s3, sequentially passing the aluminum foil through aluminum foil forming grooves (11) on a first mold (7), a second mold (8), a third mold (9) and a fourth mold (10);

s4, adjusting the distance between the dies, setting a proper cabling pitch, forming a start pitch in the cabling process, enabling the stranded semi-finished products to be S-shaped in sequence, finally, restraining through an aluminum foil forming groove (11) on a fourth die (10), completely wrapping four pairs of stranded wires by aluminum foil to form 360-degree shielding, and finally forming an S-shaped section of the cable structure with the core wires wrapped by the aluminum foil.

8. The method for longitudinally wrapping and longitudinally wrapping the shielded cable in the S shape according to claim 7, wherein the method comprises the following steps: the aluminum foil is paid off using an active pay-off tractor-packager.