CN219202860U

CN219202860U - Cable wrapping die

Info

Publication number: CN219202860U
Application number: CN202320047659.7U
Authority: CN
Inventors: 陈林; 张海城; 乐泽光; 纪云飞; 王斌; 赵瑞静; 徐宗铭
Original assignee: Zhongtian Radio Frequency Cable Co ltd
Current assignee: Zhongtian Radio Frequency Cable Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-16
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to the technical field of cable wrapping, in particular to a cable wrapping die. According to the body provided by the utility model, the body is a cylinder, a wrapping hole is formed in the body along the axis of the body, the wrapping hole penetrates through the body, and the wrapping hole is a round hole; the body is provided with at least one wrapping seam and forms at least one first side surface and at least one second side surface, and the wrapping seam is communicated with the wrapping hole; a tangent to the wrap-around aperture is located in the first side. The wrapping seam is along a certain tangential direction of the wrapping hole, so that when the copper flat belt is inserted into the body, the copper flat belt extends into the wrapping hole along the wrapping seam, can be connected onto the cable core without bending, the copper flat belt entering the body is limited by the circular tubular body, and is attached to the annular cavity between the inner wall of the wrapping hole and the side surface of the cable core to play a role in limiting the copper flat belt.

Description

Cable wrapping die

Technical Field

The utility model relates to the technical field of cable wrapping, in particular to a cable wrapping die.

Background

Most of high-frequency low-loss cables and phase-stabilizing cables are cables with microporous polytetrafluoroethylene as insulation and silver-plated copper strips as outer conductors, the working frequency of the cables is up to tens to hundreds of gigahertz, the cables are widely wrapped with the outer conductors by copper strips in order to reduce the transmission loss of the cables and improve the phase stability of the cables, and the standing wave coefficient of the cables in the whole use frequency range is an important index for measuring the quality of the cables and mainly depends on the manufacturing process of the outer conductors wrapped by the copper strips.

The copper strip of the copper strip outer conductor is completed by using a wrapping machine, a cable core penetrates into a wrapping die from a central hole of a central shaft of the wrapping machine, the copper strip is wound on a wire roller of the wrapping machine, the copper strip is led into the wrapping die through a guide wheel, and the copper strip is wound on a cable core wire through the wrapping die for wrapping.

At present, a straight rod wrapping die popular in the market is shown in fig. 1, a cable core wire penetrates into a wrapping hole 2' in the center of the wrapping die, the cross section of the wrapping hole 2' is semicircular, a copper strip penetrates from a wrapping seam 3', and the copper strip is spirally wrapped on the cable core wire to form an outer conductor along with rotation of the wrapping die.

However, this straight bar wrapping mold has the following problems: firstly, the extension line of a certain diameter of a wrapping hole 2 'at the middle position of the die is in a wrapping seam 3', and a copper strip is inevitably bent when penetrating from the wrapping seam 3', so that wrapping is not smooth, and secondly, during wrapping, the die can only limit the copper strip between a cable core wire and the inner wall of the wrapping hole 2', and the copper strip at the other side of the cable core wire cannot be limited, so that the copper strip is easy to shake, and the wire diameter is enlarged.

Disclosure of Invention

The utility model solves the problems that: when a traditional straight rod wrapping mold is used for wrapping, the copper strips inevitably bend when penetrating from wrapping seams, so that wrapping is unsmooth, the copper strips shake easily, and the wire diameter is enlarged.

(II) technical scheme

The cable wrapping die comprises a body, wherein the body is a cylinder, a wrapping hole is formed in the body along the axis of the body, the wrapping hole penetrates through the body, and the wrapping hole is a round hole;

the body is provided with at least one wrapping seam and forms at least one first side surface and at least one second side surface, and the wrapping seam is communicated with the wrapping hole;

a tangent line of the wrapping hole is positioned in the first side surface, and the length of the wrapping seam is larger than the difference between the radius of the body and the radius of the wrapping hole;

the first side surface is parallel to the second side surface, or the plane where the first side surface is located is staggered with the plane where the second side surface is located.

According to one embodiment of the utility model, the body has opposite top and bottom surfaces, the wrapping slit being provided with one, the wrapping slit extending from the top surface towards the bottom surface.

According to one embodiment of the utility model, the wrapping slit extends from the top surface to the bottom surface, or the wrapping slit extends from the top surface to near the bottom surface.

According to one embodiment of the utility model, two of said wrapping slits are provided, one extending from said top surface to a position near the middle of said body and the other extending from said bottom surface to a position near the middle of said body.

According to one embodiment of the utility model, a first edge chamfer is formed at the connection of the second side surface and the wrapping hole.

According to one embodiment of the utility model, a third edge chamfer is formed at the connection of the first side face and the side face of the body, and a second edge chamfer is formed at the connection of the second side face and the side face of the body.

According to one embodiment of the utility model, a flaring structure is formed between the third edge chamfer and the second edge chamfer, and the width of the flaring structure is larger than the width of the wrapping seam.

According to one embodiment of the utility model, a first annular chamfer is formed between the top surface and the inner wall of the wrapping hole, and a second annular chamfer is formed between the bottom surface and the inner wall of the wrapping hole.

According to one embodiment of the utility model, the first edge chamfer, the second edge chamfer and the third edge chamfer are rounded.

According to one embodiment of the present utility model, the width of the wrapping slit gradually decreases from inside to outside when the plane in which the first side surface is located and the plane in which the second side surface is located are staggered.

The utility model has the beneficial effects that:

the utility model provides a cable wrapping die which comprises a cylindrical body, wherein a wrapping hole is formed in the body along the axis of the body, the wrapping hole penetrates through the body, and the wrapping hole is a round hole; the body is provided with at least one wrapping slot and at least one first side surface and at least one second side surface, and the wrapping slot is communicated with the wrapping hole; a tangent line of the wrapping hole is positioned in the first side surface, and the length of the wrapping seam is larger than the difference between the radius of the body and the radius of the wrapping hole.

The wrapping seam is along a certain tangential direction of the wrapping hole, so that when the copper flat belt is inserted into the body, the copper flat belt extends into the wrapping hole along the wrapping seam, can be connected onto the cable core without bending, is very smooth to wind, and reduces the probability of twisting. During winding, the copper flat belt entering the body is limited by the circular-tube-shaped body, the copper flat belt is attached to the annular cavity between the inner wall of the wrapping hole and the side face of the cable core, the effect of limiting the copper flat belt is achieved, the copper flat belt is not scattered, is not easy to shake, the copper flat belt is limited to the greatest extent, and the wire diameter during winding is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a prior art straight rod wrapping mold provided by the present utility model;

FIG. 2 is a front view of a first embodiment of the present utility model;

FIG. 3 is a cross-sectional perspective view of A-A of FIG. 2, provided in accordance with a first embodiment of the present utility model;

FIG. 4 is a top view of a first embodiment of the present utility model;

FIG. 5 is a cross-sectional view of B-B in FIG. 4, provided in accordance with a first embodiment of the present utility model;

fig. 6 is a cross-sectional view of a second embodiment of the present utility model.

Icon: 1-a body; 101-chamfering the first edge; 102-second edge chamfering; 103-third edge chamfering; 104-a first annular chamfer; 2-wrapping holes; 3-wrapping the seam; 2' -wrapping holes; 3' -wrapping seams.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the upper end and the lower end of the existing straight bar wrapping mold are both cylinders, the middle position is a semi-cylinder, the wrapping hole 2' penetrates through the lower surface of the middle position from the central position of the upper end, the wrapping hole 2' and the straight bar wrapping mold are coaxially arranged, the wrapping slit 3' is formed in the side face of the straight bar wrapping mold and is specifically located on the semi-cylinder, and an extension line of a certain diameter of the wrapping hole 2' is located in the wrapping slit 3', namely, the extension line of the wrapping slit 3' divides the wrapping hole 2' into two halves.

Therefore, when the copper flat belt enters the wrapping hole 2 'from the wrapping seam 3', the copper flat belt is required to turn, the copper flat belt is not smooth in the wrapping process, the copper flat belt is twisted, and secondly, the copper flat belt is not limited in the wrapping hole 2 'when the copper flat belt is wrapped because the wrapping hole 2' in the semi-cylinder body is also the semi-cylinder hole.

Embodiment one:

as shown in fig. 1-5, a cable wrapping die comprises a body 1, wherein the body 1 is a cylinder, a wrapping hole 2 is formed in the body 1 along the axis of the body 1, the wrapping hole 2 penetrates through the body 1, the wrapping hole 2 is a round hole, and the wrapping hole 2 and the body 1 are coaxially arranged;

the body 1 is made of tungsten steel;

the body 1 is provided with a wrapping slot 3 and forms a first side surface and a second side surface, and the wrapping slot 3 is communicated with the wrapping hole 2;

one tangent line of the wrapping hole 2 is positioned in the first side surface, and the length of the wrapping slit 3 is larger than the difference between the radius of the body 1 and the radius of the wrapping hole 2;

the wrapping seam 3 is along a certain tangential direction of the wrapping hole 2, so that when the copper flat belt is inserted into the body 1, the copper flat belt extends into the wrapping hole 2 along the wrapping seam 3, can be connected onto a cable core without bending, is very smooth to wind, and reduces the probability of twisting.

As shown in fig. 1, the body 1 is a cylinder, the wrapping hole 2 is communicated with the body 1, the wrapping hole 2 is a round hole, the copper flat belt is integrally positioned in the wrapping hole 2 when in wrapping, the outer side surface of the copper flat belt is close to the inner wall of the wrapping hole 2 when in winding, the effect of limiting the copper flat belt is achieved, the copper flat belt is not scattered, is not easy to shake, and the wire diameter when in winding is reduced.

In this embodiment, as shown in fig. 3, the wrapping slit 3 is provided with one, the first side surface is parallel to the second side surface, that is, the cross-section of the wrapping slit 3 is rectangular, the width of the wrapping slit 3 is different according to cables with different specifications, the width is 0.1mm, and the wrapping slit is suitable for copper flat belts with the thickness of 0.03-0.06 mm. The width of the copper flat belt can be 1-8mm, the thickness is 0.03-0.06mm, and the depth value of the wrapping seam 3 from top to bottom is 18mm.

It will be appreciated that the thickness of the copper strap affects the diameter of the wrapping aperture 2, for example, when the width of the wrapping slit 3 is 0.1mm, the copper strap is selected to be 0.05mm thick and the wound cable core is selected to be 2.55mm, and the diameter of the wrapping aperture 2 is in the range of 2.65-2.75 mm. The width range of the reserved annular cavity is 0.1-0.2mm, so that the copper flat belt can be attached to the inner wall of the wrapping hole 2 and the side face of the cable core during winding. And the copper flat belt is limited to the greatest extent, so that the copper flat belt is prevented from being scattered.

Optionally, the body 1 has opposite top and bottom surfaces, the wrapping slit 3 extends from the top surface towards the bottom surface, the wrapping slit 3 extends from the top surface to the bottom surface, and the wrapping slit 3 completely penetrates the body 1. Thus, the body 1 can be inserted with copper flat belts from the top surface or the bottom surface without being separated from the front surface or the back surface.

When the copper strip winding machine is used, the body 1 is inserted into the triangular chuck, the body 1 is fixed through the triangular chuck, the cable core penetrates into the triangular chuck and the winding hole 2 in the winding mould from the central hole of the central shaft of the winding machine, the copper strip penetrates into the winding seam 3 and is fixed onto the cable core, the winding mould rotates along with the upward movement or the downward movement of the cable core, and the copper strip is spirally wound on the cable core to form an outer conductor.

As an alternative embodiment, as shown in fig. 3, a first edge chamfer 101 is formed at the connection position between the second side surface and the wrapping hole 2, the first edge chamfer 101 is a rounded corner, and the rounded corner is used for eliminating the original sharp protrusion, avoiding scratching the copper flat belt, and prolonging the transition between the inner wall of the wrapping hole 2 and the second side surface.

As an alternative embodiment, as shown in fig. 3, a third edge chamfer 103 is formed at the connection between the first side and the side of the body 1, a second edge chamfer 102 is formed at the connection between the second side and the side of the body 1, the third edge chamfer 103 and the second edge chamfer 102 are rounded corners, and extend from the top surface to the bottom surface along the length direction of the body 1, a flaring structure is formed between the third edge chamfer 103 and the second edge chamfer 102, and the width of the flaring structure is greater than the width of the wrapping slit 3, so that the copper flat ribbon can be conveniently inserted, and the side surface of the copper flat ribbon can be prevented from being scratched.

Alternatively, as shown in fig. 4 and 5, a first annular chamfer 104 is formed between the top surface of the body 1 and the inner wall of the wrapping hole 2, and a second annular chamfer is formed between the bottom surface and the inner wall of the wrapping hole 2, and the first annular chamfer 104 and the second annular chamfer are identical;

optionally, a chamfering process is also performed at the connection between the bottom of the first annular chamfer 104 and the inner wall of the wrapping hole 2, so that the cable core is prevented from being scratched.

Optionally, as shown in fig. 4, chamfering is performed at the edge of the top surface and the edge of the bottom surface of the body 1, so as to avoid the operator from being scratched by the edges.

The wrapping seam 3 is along a certain tangential direction of the wrapping hole 2, so that when the copper flat belt is inserted into the body 1, the copper flat belt extends into the wrapping hole 2 along the wrapping seam 3, can be connected onto a cable core without bending, is very smooth to wind, and reduces the probability of twisting. During winding, the copper flat belt entering the body 1 is limited by the tubular body 1, the copper flat belt is attached to the annular cavity between the inner wall of the wrapping hole 2 and the side face of the cable core, the effect of limiting the copper flat belt is achieved, the copper flat belt is not scattered, is not easy to shake, limits the copper flat belt to the greatest extent, and reduces the wire diameter, pitch and angle change during winding.

Example two

The body 1 is a cylinder, the wrapping hole 2 is a round hole, the wrapping slit 3 is provided with one, the wrapping slit 3 extends from the top surface to the bottom surface of the body 1, as shown in fig. 6, the first side surface and the second side surface are not parallel any more, the plane where the first side surface is located is staggered with the plane where the second side surface is located, and the width of the wrapping slit 3 is gradually reduced from inside to outside, but the width of the narrowest part is 0.08mm, the width of the widest part is 0.1mm, and the wrapping slit is suitable for copper flat belts with the thickness of 0.03-0.06 mm. The width of the wrapping slit 3 near the wrapping hole 2 reaches the maximum, so that the transition of the first edge chamfer 101 is more natural and gentle, and the smoothness of the inner wall of the body 1 is improved.

Of course, according to the copper flat belts with different thicknesses, the width of the narrowest part and the width of the widest part of the wrapping slit 3 are correspondingly changed.

Example III

In this embodiment, the difference from the first embodiment is that two wrapping slits 3 are provided, one wrapping slit 3 extends from the top surface to a middle position near the body 1, the other wrapping slit 3 extends from the bottom surface to a middle position near the body 1, the projections of the two wrapping slits 3 on the bottom surface are completely coincident, the middle positions are connected, i.e. do not penetrate the body 1, but it is noted that the depth of the two wrapping slits 3 at this time is at least 3 times the width of the copper flat tape;

for example, the width of the copper flat strip is 3.5mm, at which time the depth of the two wrapping slits 3 is 10.5mm, the length of the body 1 is 27mm, and the thickness of the body 1 at the intermediate position between the two wrapping slits 3 is 6mm.

It should be noted that, the wrapping is also forward and reverse, the wrapping slit 3 is on the right side when the wrapping is forward, the q-type is seen in the top view, the reverse wrapping slit is on the left side when the p-type is seen in the top view, and in this embodiment, two wrapping slits 3 are on the left side, one on the right side, but are tangential to the tangent line of the wrapping hole 2.

Example IV

In this embodiment, the body 1 is a cylinder, the wrapping hole 2 is a round hole, the wrapping slit 3 is provided with one, the first side face is parallel to the second side face, that is, the cross-street face of the wrapping slit 3 is rectangular, unlike the first embodiment, the body 1 is made of wear-resistant ceramic, the wrapping slit 3 extends from the top face of the body 1 towards the bottom face until reaching a position close to the bottom face, the distance is 3mm from the bottom face, and the wrapping slit 3 does not completely penetrate through the body 1.

At this time, the copper flat belt can be inserted from the top surface or the bottom surface, but as the wrapping seam 3 does not completely penetrate through the body 1, a part of the body 1 is still connected, and the overall strength of the body 1 is improved.

Example five

In this embodiment, two wrapping slits 3 are provided, one wrapping slit 3 extends from the top surface to a middle position close to the body 1, the other wrapping slit 3 extends from the bottom surface to a middle position close to the body 1, the projections of the two wrapping slits 3 on the bottom surface are completely coincident, the middle positions are connected, i.e. do not penetrate through the body 1, but the first side surface and the second side surface are not arranged in parallel any more, the plane where the first side surface and the second side surface are located are staggered, and the width of the wrapping slit 3 gradually decreases from inside to outside.

Preferably, the two wrapping seams 3 are arranged on the left side and the right side of the die, the cross section of the wrapping seam 3 and the wrapping hole 2 of the upper half part is q-shaped, and the cross section of the wrapping seam 3 and the wrapping hole 2 of the upper half part is p-shaped.

Because the wrapping seam 3 is not completely communicated with the body 1, a part of the body 1 is still connected, the overall strength of the body 1 is improved, the transition of the first edge chamfer 101 is more natural and gentle, and the smoothness of the inner wall of the body 1 is improved.

The flat belt wrapping is a special structure of a stable phase cable and cannot be replaced, and the insulating core wire is formed by wrapping a belt with the density of PTFE (polytetrafluoroethylene) of 1.6 and the density of 0.7, or is formed by wrapping PTFE push insulation, PTFE push semi-sintered insulation, push lotus root insulation or low-density foaming insulation.

In the embodiment, the PTFE wrapping tape with the density of 1.6 and the density of 0.7 is preferably adopted, and the PTFE wrapping tape is softer and has good elasticity, and the outer conductor can be better wound on the cable insulation core wire when being wound with the silver-plated copper flat tape, so that the structural stability and the dimensional accuracy can be ensured.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct or indirect through an intermediate medium, or may be internal to two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The cable wrapping die is characterized by comprising a body (1), wherein the body (1) is a cylinder, a wrapping hole (2) is formed in the body (1) along the axis of the body (1), the wrapping hole (2) penetrates through the body (1), and the wrapping hole (2) is a round hole;

at least one wrapping slot (3) is formed in the body (1) and forms at least one first side face and at least one second side face, and the wrapping slot (3) is communicated with the wrapping hole (2);

a tangent line of the wrapping hole (2) is positioned in the first side surface, and the length of the wrapping seam (3) is larger than the difference between the radius of the body (1) and the radius of the wrapping hole (2);

2. A cable wrapping mould according to claim 1, characterized in that the body (1) has opposite top and bottom surfaces, the wrapping slit (3) being provided with one, the wrapping slit (3) extending from the top surface in the direction of the bottom surface.

3. A cable wrapping mould according to claim 2, characterized in that the wrapping slit (3) extends from the top surface to the bottom surface or that the wrapping slit (3) extends from the top surface to close to the bottom surface.

4. A cable wrapping mould according to claim 2, characterized in that two wrapping slits (3) are provided, one wrapping slit (3) extending from the top surface to a middle position close to the body (1) and the other wrapping slit (3) extending from the bottom surface to a middle position close to the body (1).

5. A cable wrapping mould according to claim 1, characterized in that the junction of the second side and the wrapping hole (2) is formed with a first edge chamfer (101).

6. A cable lapping mould according to claim 5, wherein a third edge chamfer (103) is formed at the junction of the first side and the side of the body (1), and a second edge chamfer (102) is formed at the junction of the second side and the side of the body (1).

7. A cable wrapping mould according to claim 6, characterized in that a flaring structure is formed between the third edge chamfer (103) and the second edge chamfer (102), the width of the flaring structure being greater than the width of the wrapping slit (3).

8. A cable wrapping mould according to claim 2, characterized in that a first annular chamfer (104) is formed between the top surface and the inner wall of the wrapping hole (2), and a second annular chamfer is formed between the bottom surface and the inner wall of the wrapping hole (2).

9. The cable wrapping die of claim 6, wherein the first edge chamfer (101), the second edge chamfer (102), and the third edge chamfer (103) are rounded.

10. A cable wrapping mould according to any one of claims 1-9, characterized in that the width of the wrapping slit (3) gradually decreases from inside to outside when the plane in which the first side is located is staggered with the plane in which the second side is located.