CN215183235U

CN215183235U - Layered longitudinal paper-coated flat cable

Info

Publication number: CN215183235U
Application number: CN202121332314.3U
Authority: CN
Inventors: 董瀚元; 张书军; 张宝龙; 李宏章; 王振彪; 王怀安; 窦丽梅; 蒋宝军; 张红军; 薛林; 纪艳丽; 李彬; 田亚飞
Original assignee: Tangshan Huatong Special Cable Manufacturing Co ltd
Current assignee: Tangshan Huatong Special Cable Manufacturing Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-14
Anticipated expiration: 2031-06-16

Abstract

The utility model relates to a flat cable of package paper is indulged in layering belongs to cable preparation technical field. The technical scheme is as follows: an insulation layer (2) and nylon (3) are sequentially extruded outside the main line conductor (1) to form a main line insulation wire core (8), and a paper tape I (5) longitudinally wraps the ground wire conductor (4) to form a ground wire; the two main line insulated wire cores (8) and the ground wire are arranged side by side, wherein the ground wire is positioned between the two main line insulated wire cores (8) to form a cable core, a paper tape II (6) is longitudinally wrapped outside the cable core integrally, and a PVC sheath (7) is extruded outside the paper tape II (6). The utility model discloses an actively the effect: compared with a common sheath multi-core cable, the longitudinally-wrapped paper tape II outside the cable core is better stripped, the longitudinally-wrapped paper tape outside the ground wire conductor has the effect of isolating the ground wire conductor from the main wire insulated wire core, plays a certain role in protection and insulation when the cable is pressed and rubbed, is low in cost, and has high economic advantages.

Description

Layered longitudinal paper-coated flat cable

Technical Field

The utility model relates to a flat cable of package paper is indulged in layering belongs to cable preparation technical field.

Background

The fixed-laying electric wire is mainly applied to home decoration wiring and electrical equipment and is the most common cable type in the current society. China has two standards which are respectively the national standard GB/T5023-2008 and the mechanical department standard JB/T8734-2016 for stipulating the products. GB/T5023-2008 mainly refers to international standard IEC60227, JB/T8734-2016 is a model and a specification which are not included in GB/T5023 and are added by the mechanical department according to domestic actual conditions, and cables listed in the two standards are classified into CCC products.

Although CCC products already cover most of the cable models commonly found in the market, there is still a portion that needs to be customized for the particular requirements. Corresponding to the sheathed wire, the RVV cable is commonly used, but the BVV cable is difficult to see, and the main reason is that the BVV cable is insulated and is provided with an inner sheath, so that the cable is inconvenient to strip and is more expensive, and the cable is generally used by few people. If a place needing to use a hard conductor exists, a plurality of BV wires are generally bound together for use. In foreign countries, there are already a number of standards that specify the structural parameters of such cables. The British China has a BS6004 standard, a 6242Y cable in the cable is a parallel structure with 2 insulated wire cores and 1 bare copper ground wire in parallel, and a sheath is extruded outside the cable. The U.S. has UL719 standards, and the inner NM-B cable is similar in construction to the 6242Y cable, but requires a release tape outside the bare ground. Both types of cables belong to a large variety in each country. Especially, NM-B cables are sold in a high market in the united states and are mostly used for electrical connection in the construction of rural wooden houses.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flat cable of package paper is indulged in layering improves cable structure, all indulges the package paper tape outside naked earth wire and whole cable core, makes things convenient for the wire stripping, and is with low costs, solves the above-mentioned problem that the background art exists.

The technical scheme of the utility model is that:

a layered longitudinally-wrapped paper flat cable comprises a main line conductor, insulation, nylon, a first paper tape, a PVC sheath, a ground wire conductor and a second paper tape, wherein the insulation and the nylon are sequentially extruded outside the main line conductor to form a main line insulation wire core, and the first paper tape is longitudinally wrapped outside the ground wire conductor to form a ground wire; the two main line insulation wire cores and the ground wire are arranged side by side, the ground wire is located between the two main line insulation wire cores to form a cable core, a paper tape II is longitudinally wrapped outside the cable core integrally, and a PVC sheath is extruded outside the paper tape.

The diameter of the ground wire is smaller than that of the main wire insulated wire core.

The first paper tape and the second paper tape are both kraft paper.

The insulation is PVC.

The utility model discloses an actively the effect: compared with a common sheath multi-core cable, the longitudinally-wrapped paper tape II outside the cable core is better stripped, the longitudinally-wrapped paper tape outside the ground wire conductor has the effect of isolating the ground wire conductor from the main wire insulated wire core, plays a certain role in protection and insulation when the cable is pressed and rubbed, is low in cost, and has high economic advantages.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic view of the manufacturing process of the present invention;

FIG. 3 is a schematic view of the structure of the vertical wrapping device of the present invention;

fig. 4 is a front view of the plane guide wheel of the present invention;

fig. 5 is a side view of the planar guide wheel of the present invention;

FIG. 6 is a front view of the three-groove guide wheel of the present invention;

fig. 7 is a side view of the three-groove guide wheel of the present invention;

fig. 8 is a front view of the ground wire longitudinal wrapping mold of the present invention;

fig. 9 is a side view of the ground wire longitudinal wrapping mold of the present invention;

FIG. 10 is a front view of the integral longitudinal wrapping mold of the present invention;

FIG. 11 is a side view of the integral longitudinal covering mold of the present invention;

FIG. 12 is a front view of the belt pressing device of the present invention;

FIG. 13 is a side view of the belt pressing device of the present invention;

in the figure: the cable comprises a main line conductor 1, an insulation 2, nylon 3, a ground line conductor 4, a first paper tape 5, a second paper tape 6, a PVC sheath 7, a main line insulation core 8, a double pay-off rack 9, a single pay-off rack 10, a longitudinal wrapping device 11, a main frame body 111, a first guide wheel rack 112, a second guide wheel rack 113, a first paper tray 114, a second paper tray 115, a ground line longitudinal wrapping die 116, an integral longitudinal wrapping die 117, a belt pressing device 118, a frame 118-1, an upper roller set 118-2, a lower roller set 118-3, an upper belt pressing 118-4, a lower belt pressing 118-5, an upper hanger 118-6, a lower supporting frame 118-7, a first plane guide wheel 119, a second plane guide wheel 120, a first guide wheel rack 121, a second guide wheel rack 122, a guide wheel 123, a three-groove guide wheel 124 and an extruder 12.

Detailed Description

The invention is further described with reference to the following figures and examples:

a layered longitudinally-wrapped paper flat cable comprises a main line conductor 1, insulation 2, nylon 3, a first paper tape 5, a PVC sheath 7, a ground wire conductor 4 and a second paper tape 6, wherein the insulation 2 and the nylon 3 are sequentially extruded outside the main line conductor 1 to form a main line insulation wire core 8, and the first paper tape 5 is longitudinally wrapped outside the ground wire conductor 4 to form a ground wire; the two main line insulated wire cores 8 and the ground wire are arranged side by side, wherein the ground wire is positioned between the two main line insulated wire cores 8 to form a cable core, a paper tape II 6 is longitudinally wrapped outside the cable core integrally, and a PVC sheath 7 is extruded outside the paper tape II 6.

The diameter of the ground wire is smaller than that of the main insulated wire core 8.

The first paper tape and the second paper tape are both kraft paper.

The insulation 2 is PVC.

The manufacturing method of the layered longitudinally-wrapped flat paper cable comprises the following steps:

with reference to the attached drawings 1-13, two main line insulated wire cores 8 are placed on a double pay-off rack 9, a ground wire conductor 4 is placed on a single pay-off rack 10, the tension of the two main line insulated wire cores 8 and the tension of the ground wire conductor 4 are adjusted to be consistent, wherein the ground wire conductor 4 passes through a guide wheel 123 on the longitudinal wrapping device 11, a first paper tape 5 is longitudinally wrapped at the position of the ground wire longitudinal wrapping die 116 to form a ground wire, two main wire insulated wire cores 8 respectively pass through grooves at two sides of a three-groove guide wheel 124 on the longitudinal wrapping device 11, the ground wire enters a groove in the middle of the three-groove guide wheel 124, the ground wire is positioned between the two main wire insulated wire cores 8, the two main wire insulated wire cores 8 and the ground wire are arranged in parallel to form a cable core, and the two main wire insulated wire cores and the ground wire jointly enter the integral longitudinal wrapping die 117 to integrally longitudinally wrap a second paper tape 6, and then the cable enters a belt pressing device 118 for compression, and finally the cable directly enters an extruder 12 for extrusion of the PVC sheath 7, so that the flat cable is manufactured.

The longitudinal wrapping device 11 comprises a main frame 111, a first guide wheel frame 121, a second guide wheel frame 122, a first paper tray 114, a second paper tray 115, a ground wire longitudinal wrapping mold 116, an integral longitudinal wrapping mold 117 and a belt pressing device 118, the upper end face of the main frame body 111 is sequentially provided with a first guide wheel frame 121, a second guide wheel frame 122, a ground wire longitudinal wrapping die 116, an integral longitudinal wrapping die 117 and a belt pressing device 118, the side face of the main frame body 111 is rotatably provided with a first paper tray 114 and a second paper tray 115, a first paper tape 5 and a second paper tape 6 are respectively arranged on the first paper tray 114 and the second paper tray 115, the first guide wheel frame 121 is provided with two guide wheels 123 which are arranged up and down, a ground wire conductor 4 on the single pay-off rack 10 extends downwards after being turned by the guide wheel 123 above and then horizontally enters the ground wire longitudinal wrapping die 116 after being guided by the guide wheel 123 below, the first paper tape 5 on the first paper tray 114 enters the ground wire longitudinal wrapping die 116 after being turned by the first planar guide wheel 119, and the second ground wire conductor 4 enters a groove in the middle of the three-groove guide wheels 124 and horizontally extends; the second guide wheel frame 122 is provided with two three-groove guide wheels 124 which are vertically arranged, the two main line insulated wire cores 8 on the double pay-off rack 9 are turned by the upper three-groove guide wheel 124 and then extend downwards, then are turned by the lower three-groove guide wheel 124 and horizontally extend out along the grooves on the two sides of the main line insulated wire cores, and the paper tape second 6 on the paper disc second 115 is turned by the plane guide wheel second 120 and then enters the integral longitudinal wrapping mold 117.

The tape pressing device 118 comprises a frame 118-1, and an upper roller group 118-2 and a lower roller group 118-3 which are rotatably arranged on the frame 118-1, wherein the upper roller group 118-2 and the lower roller group 118-3 are respectively provided with an upper tape pressing group 118-4 and a lower tape pressing group 118-5 in a surrounding manner, the distance between the upper tape pressing group 118-4 and the lower tape pressing group 118-5 is smaller than the thickness of the cable core after the second 6 tape is wrapped, the cable core enters between the upper roller group 118-2 and the lower roller group 118-3, and the upper roller group 118-2 and the lower roller group 118-3 rotate to drive the upper tape pressing group 118-4 and the lower tape pressing group 118-5 to move, so that the first 5 tape pressing and the second 6 tape pressing are realized.

An upper hanger 118-6 is arranged at the upper part of the machine frame 118-1, an upper roller group 118-2 is rotatably arranged on the upper hanger 118-6, a lower support frame 118-7 is arranged at the lower part of the machine frame 118-1, and a lower roller group 118-3 is rotatably arranged on the lower support frame 118-7.

Three annular guide grooves are sequentially arranged on the circumferential surface of the three-groove guide wheel 124.

The ground wire longitudinal covering die 116 is cylindrical, a cavity is formed in the ground wire longitudinal covering die, the cavity is divided into two parts which are communicated front and back, the cavity in the front is in a circular truncated cone shape, and the cavity in the rear is cylindrical.

The integral longitudinal wrapping die 117 is cylindrical, a cavity is arranged in the die, the cavity is divided into two parts which are communicated from front to back, the cavity at the front part is in a circular truncated cone shape, and the cavity at the rear part is in an oblate shape in cross section.

The cable of this embodiment takes the 2x14AWG +1x14AWG specification as an example:

the layered longitudinally-wrapped paper flat cable structure is shown in figure 1, a solid copper conductor is adopted as a conductor of a main line insulated wire core, and PVC and nylon are sequentially extruded outside for composite insulation. The nylon has better oil resistance and can play a certain role in moisture resistance and protection. The ground wire conductor is a bare copper conductor, a layer of kraft paper (paper tape I) is longitudinally wrapped outside the bare copper conductor, the kraft paper plays a role in isolating the ground wire conductor from the main wire insulation wire core, and the kraft paper plays a certain role in protection and insulation when the cable is pressed and rubbed. Kraft paper (paper tape II) is longitudinally wrapped outside the cable core, and a layer of PVC sheath is arranged. PVC has relatively good moisture resistance and corrosion resistance, and can prolong the service life of the cable.

Placing two insulated wire cores on a double pay-off rack with an active pay-off device, placing an earth wire on a single pay-off rack with the active pay-off device, adjusting the tension of the three wire cores to be consistent, then respectively drawing the three wires to a longitudinal wrapping device through guide wheels on the double pay-off rack and the single pay-off rack, sequentially longitudinally wrapping the earth wire and integrally longitudinally wrapping the three wire cores, and then feeding the earth wire into an extruder to produce a sheath, as shown in fig. 2.

The specific longitudinal wrapping process is shown in fig. 3. The ground wire conductor (bare ground wire) passes through the guide wheel, and a first paper tape is longitudinally wrapped at the position of the ground wire longitudinal wrapping mold. Two main line insulated wire cores respectively pass through the grooves on the two sides of the three-groove guide wheel, the ground wire enters the groove in the middle of the three-groove guide wheel, then the three wire cores are arranged in parallel and enter the integral longitudinal wrapping die together, and the integral paper tape secondary longitudinal wrapping is completed. In order to prevent the paper tape I and the paper tape II from opening after the paper is wrapped by the longitudinal wrapping die, a belt pressing device is added for pressing, and finally the paper tape I and the paper tape II directly enter an extruder for sheath extrusion.

In actual production, the tension conditions of the two main line insulation wire cores, the ground wire conductor, the first paper tape and the second paper tape are paid attention to, the tension conditions cannot be too large or too small, the tension conditions of the three wire cores are as consistent as possible, otherwise, the phenomena of paper breaking and wrinkling can occur when the first paper tape and the second paper tape are longitudinally wrapped, a tension control system can be additionally arranged when the longitudinal wrapping device is designed, and the tension control system can be an existing electronic tensioner.

Claims

1. The utility model provides a flat cable of paper is indulged in layering which characterized in that: the ground wire comprises a main wire conductor (1), an insulator (2), nylon (3), a paper tape I (5), a PVC sheath (7), a ground wire conductor (4) and a paper tape II (6), wherein the insulator (2) and the nylon (3) are sequentially extruded outside the main wire conductor (1) to form a main wire insulation core (8), and the ground wire conductor (4) longitudinally wraps the paper tape I (5) to form a ground wire; the two main line insulated wire cores (8) and the ground wire are arranged side by side, wherein the ground wire is positioned between the two main line insulated wire cores (8) to form a cable core, a paper tape II (6) is longitudinally wrapped outside the cable core integrally, and a PVC sheath (7) is extruded outside the paper tape II (6).

2. The layered longitudinally-wrapped flat paper cable according to claim 1, wherein: the diameter of the ground wire is smaller than that of the main wire insulated wire core (8).