Wrapping forming pinch roller and high-speed signal transmission cable

Abstract

The utility model relates to a wrapping forming pressing wheel and a high-speed signal transmission cable. The width of a wire passing groove is adaptively set according to the cable width of the high-speed signal transmission cable. A middle area pressing part is convexly arranged in the wire passing groove of the wrapping forming pressing wheel, and the middle area pressing part and the wire passing groove have the same first symmetry plane; the middle area pressing part is used for applying pressure to the high-speed signal transmission cable from the middle position in the state that the wrapping forming pressing wheel presses the high-speed signal transmission cable, so that a wrapping tape of the high-speed signal transmission cable is tightly attached to the internal structural body, and a gap of the high-speed signal transmission cable on the second symmetry plane is eliminated. The symmetry of the high-speed signal transmission cable is optimized, so that the transmission performance of the high-speed signal transmission cable can be ensured; the inner gap of the high-speed signal transmission cable is eliminated, the symmetry of the high-speed signal transmission cable is further ensured, the wrapping tape on the high-speed signal transmission cable can be prevented from forming a wrinkle part, and the high-speed signal transmission cable is particularly suitable for a longitudinal wrapping process and can also be used for a transverse wrapping process.

Description

Technical Field

[0001] The present application relates to the field of cable processing, and in particular to a wrapping forming pressure wheel and a high-speed signal transmission cable. Background Art

[0002] Traditional high data rate (HDR) data transmission lines, that is, high-speed signal transmission cables, use differential line pairs for signal transmission. The symmetrical structure of the differential line pairs is conducive to ensuring the accuracy of high-speed data transmission.

[0003] The differential line pair usually uses a pair of conductors and each conductor is provided with an insulating layer as an internal structure as a whole. The internal structure can also include a shielding layer and a ground wire. Then a layer of plastic film is wrapped around the outermost layer of the semi-finished internal structure as an outer layer to prevent the internal structure of the data transmission line from being loose. The wrapping process usually uses a pressure wheel to position and press the high-speed signal transmission cable. The processing quality of the wrapping process directly affects the performance of the product.

[0004] As shown in FIG. 1 and FIG. 2 , exemplarily, the wrapping process uses a wrapping forming roller 100 to roll along the extension direction of the high-speed signal transmission cable 200, and the high-speed signal transmission cable 200 is located in the wire groove 110 of the wrapping forming roller 100. In conjunction with FIG. 3 , the high-speed signal transmission cable 200 includes an internal structure 260 and a wrapping tape 230 wound around the outside of the internal structure 260, wherein the internal structure 260 uses a pair of conductors 210 as core wires, each conductor 210 is provided with a layer of insulator 220, and a wrapping tape 230 is wound around all the conductors 210 and insulators 220, and there is a gap 240 between the internal structure 260 or its insulator 220 and the wrapping tape 230. The internal structure 260 is a symmetrical structure along its extension direction, and has a second symmetry plane 250.

[0005] Since the wire groove 110 of the conventional wrapping forming pressure wheel 100 is rectangular, it can only position the high-speed signal transmission cable 200, that is, the wire, so that the wire will not flip over during the wrapping process and will not swing up and down or left and right. This leads to problems. Combined with Figures 3 and 4, when the wrapping tape 230 is wrapped around the outside of the internal structure 260, the wrapping tape 230 will form a rotation stress on the internal structure 260 during the wrapping. Therefore, under the force in the pressure direction 300 and the rotation stress in the wrapping direction 400 of the wrapping tape 230, the wrapping tape 230 on the high-speed signal transmission cable 200 will form a wrinkled portion 231, that is, the wrapping tape will produce asymmetric tilting and wrinkling.

[0006] This will make the left and right sides of the high-speed signal transmission cable 200 asymmetrical, resulting in very poor signal integrity (SI) parameters that are strongly related to symmetry performance, such as delay difference parameters or common-mode to differential-mode insertion loss parameters, where the signal integrity parameters are SI parameters and the common-mode to differential-mode insertion loss parameters are SCD21 parameters, thereby causing fatal defects in the signal transmission of the high-speed signal transmission cable 200; the performance is more obvious when it is wrapped vertically than when it is wrapped horizontally. Utility Model Content

[0007] Based on this, it is necessary to provide a wrapping molding pressure wheel and a high-speed signal transmission cable to solve the symmetry problem of the high-speed signal transmission cable caused by the traditional wrapping pressing process to ensure the transmission performance of the high-speed signal transmission cable.

[0008] In one embodiment, a wrapping and forming pressing wheel includes a body, and a wire passing groove is provided on the outer edge of the body, which is used for positioning and pressing a high-speed signal transmission cable having an internal structure with a symmetrical shape;

[0009] The cable groove is symmetrical in shape, and the width of the cable groove is adaptively set according to the cable width of the high-speed signal transmission cable;

[0010] The wrapping forming pressing wheel is provided with a middle area pressing portion protruding in the wire passing groove, and the middle area pressing portion and the wire passing groove have the same first symmetry plane;

[0011] The middle area pressing portion is used to apply pressure to the high-speed signal transmission cable from the middle position when the high-speed signal transmission cable is pressed by the wrapping molding pressure wheel, so that the wrapping tape of the high-speed signal transmission cable is tightly attached to the internal structure, so as to eliminate the gap between the high-speed signal transmission cable and the second symmetry plane.

[0012] The above-mentioned wrapping forming pressure wheel is used in the positioning wrapping pressing process. On the one hand, it optimizes the symmetry of the high-speed signal transmission cable, which is beneficial to ensure the transmission performance of the high-speed signal transmission cable; on the other hand, it eliminates the gap inside the high-speed signal transmission cable, so while further ensuring the symmetry of the high-speed signal transmission cable, it is beneficial to avoid the formation of wrinkles on the wrapping tape on the high-speed signal transmission cable. It is particularly suitable for the longitudinal wrapping process and can also be used for the transverse wrapping process.

[0013] In one embodiment, the middle zone pressing portion has a partially circular or partially elliptical cross section.

[0014] In one embodiment, the cross section is semicircular, arcuate, semi-elliptical or a partial ellipse with a tangent perpendicular to the major axis.

[0015] In one embodiment, the wire groove has a plane wall portion, a curved wall portion, or a combination of the plane wall portion and the curved wall portion.

[0016] In one embodiment, the curved wall portion has an arc-shaped cross-section.

[0017] In one embodiment, the curved wall portion includes a concave wall portion and a convex wall portion.

[0018] In one embodiment, the width of the cable trough is 0.4 mm to 4 mm greater than the width of the cable; and / or,

[0019] The height of the cable trough is 40% to 49% of the height of the high-speed signal transmission cable, so that the wrapping forming pressure wheels are used in pairs.

[0020] In one embodiment, the number of the wire slots is at least two; and / or,

[0021] The wire passing groove and the middle area pressing portion are integrally formed.

[0022] In one of the embodiments, when the wrapping molding pressing wheel is positioned to press the high-speed signal transmission cable, the first symmetry plane and the second symmetry plane are located in the same plane.

[0023] In one embodiment, a high-speed signal transmission cable is made using the wrapping molding pressure wheel described in any embodiment, so that the wrapping tape is tightly attached to the internal structure at the second symmetry plane of the internal structure, so as to eliminate the gap at the second symmetry plane.

[0024] The above-mentioned high-speed signal transmission cable has solved the wrinkle and symmetry problems caused by the wrapping molding process due to the gap at the second symmetry plane during the preparation process, optimized the symmetry of the high-speed signal transmission cable, and is therefore conducive to ensuring the transmission performance of the high-speed signal transmission cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] FIG. 1 is a schematic diagram of a conventional wrapping process using a wrapping forming press wheel to position and press a high-speed signal transmission cable.

[0027] FIG. 2 is a schematic cross-sectional view taken along the AA direction of FIG. 1 .

[0028] FIG. 3 is a schematic structural diagram of the high-speed signal transmission cable shown in FIG. 1 .

[0029] FIG. 4 is another schematic diagram of identification of the high-speed signal transmission cable shown in FIG. 3 .

[0030] FIG. 5 is a schematic structural diagram of an embodiment of a wrapping forming pressure wheel described in the present application.

[0031] FIG. 6 is a partial structural schematic diagram of the embodiment shown in FIG. 5 .

[0032] FIG. 7 is a partial structural schematic diagram of another embodiment of the wrapping forming pressure wheel described in the present application.

[0033] FIG8 is a partial structural schematic diagram of another embodiment of the wrapping forming pressure wheel described in the present application.

[0034] FIG. 9 is a schematic structural diagram of another embodiment of the wrapping forming pressure wheel described in the present application.

[0035] FIG. 10 is a schematic diagram of the structure of the high-speed signal transmission cable described in the present application.

[0036] FIG. 11 is another schematic diagram of identification of the high-speed signal transmission cable shown in FIG. 10 .

[0037] Figure numerals: wrapping forming pressure wheel 100, wire groove 110, middle area pressing part 120, wall 130, plane wall 131, curved wall 132, convex wall 133, concave wall 134, main body 140, first symmetry plane 150, groove 160, high-speed signal transmission cable 200, conductor 210, insulator 220, wrapping tape 230, folded part 231, gap 240, second symmetry plane 250, internal structure 260, cable width 270, pressure direction 300, wrapping direction 400. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0043] The present application discloses a wrapping forming pressure wheel and a high-speed signal transmission cable, which include some or all of the technical features of the following embodiments; that is, the wrapping forming pressure wheel and the high-speed signal transmission cable include some or all of the following structures. In one embodiment of the present application, a wrapping forming pressure wheel includes a body, and a wire passing groove is provided on the outer edge of the body, which is used to position and press a high-speed signal transmission cable with a symmetrical internal structure; the wire passing groove is a symmetrical shape, and the width of the wire passing groove is adapted according to the cable width of the high-speed signal transmission cable; the wrapping forming pressure wheel is provided with a middle area pressing portion protruding in the wire passing groove, and the middle area pressing portion and the wire passing groove have the same first symmetry plane; the middle area pressing portion is used to apply pressure to the high-speed signal transmission cable from the middle position when the wrapping forming pressure wheel presses the high-speed signal transmission cable, so that the wrapping tape of the high-speed signal transmission cable is close to the internal structure to eliminate the gap of the high-speed signal transmission cable at the second symmetry plane. The above-mentioned wrapping forming pressure wheel is used in the positioning wrapping pressing process. On the one hand, it optimizes the symmetry of the high-speed signal transmission cable, which is beneficial to ensure the transmission performance of the high-speed signal transmission cable; on the other hand, it eliminates the gap inside the high-speed signal transmission cable, so while further ensuring the symmetry of the high-speed signal transmission cable, it is beneficial to avoid the formation of wrinkles on the wrapping tape on the high-speed signal transmission cable. It is particularly suitable for the longitudinal wrapping process and can also be used for the transverse wrapping process. The wrapping forming pressure wheel and the high-speed signal transmission cable are described in detail below in conjunction with Figures 1 to 10.

[0044] In one embodiment, a wrapping molding pressure wheel 100 is shown in Figure 5, which includes a main body 140, and a wire passing groove 110 is opened on the outer edge of the main body 140. Furthermore, the wire passing groove 110 is opened on the outer periphery of the main body 140, that is, in the rotation circumference of the wrapping molding pressure wheel 100 or its main body 140, the wire passing groove 110 is opened on the outer edge of the main body 140, so that during the pressing process, the high-speed signal transmission cable 200 passes through the wire passing groove 110 when passing through the wrapping molding pressure wheel 100. Specifically, the wire groove 110 is used to position and press the high-speed signal transmission cable 200 having an internal structure 260 with a symmetrical shape. It can also be understood that the wrapping molding pressing wheel 100 is used to position and press the high-speed signal transmission cable 200 through the body 140 and the wire groove 110. In combination with Figures 3 and 10, the high-speed signal transmission cable 200 has an internal structure 260, and the internal structure 260 is symmetrical. As mentioned above, the internal structure 260 is symmetrical with respect to the second symmetry plane 250; that is, along the extension direction of the high-speed signal transmission cable 200, the cross section of the internal structure 260 is an axisymmetric shape, and the symmetry axis is located on the second symmetry plane 250. It can be understood that the second symmetry plane 250 is a symmetry plane, and the second one in the front is only to distinguish it from other symmetry planes, and it will not be repeated below.

[0045] For the high-speed signal transmission cable 200 having the symmetrical internal structure 260, the wire groove 110 is a symmetrical shape as shown in FIG6 to adapt to the shape of the pressed high-speed signal transmission cable 200. Exemplarily, on a cross section perpendicular to the rotation axis of the wrapping molding pressure wheel 100 or its body 140, one of the planes is a symmetrical cross section of the wire groove 110, referred to as a first symmetry plane 150, and along the extension direction of the high-speed signal transmission cable 200, the cross section of the wire groove 110 is an axisymmetric shape, and the axis of symmetry is located on the first symmetry plane 150. Further, in one embodiment, when the wrapping molding pressure wheel 100 is positioned to press the high-speed signal transmission cable 200, the first symmetry plane 150 and the second symmetry plane 250 are located in the same plane. Such a structural design is conducive to ensuring the symmetry of the high-speed signal transmission cable 200 obtained by the positioning wrapping pressing process, thereby ensuring the transmission performance of the high-speed signal transmission cable 200.

[0046] In various embodiments, in combination with FIG10 , the width of the wire groove 110 is adapted to the cable width 270 of the high-speed signal transmission cable 200; in one embodiment, the width of the wire groove 110 is 0.4 mm to 4 mm larger than the cable width 270. Such a structural design enables the high-speed signal transmission cable 200 to just pass through the wire groove 110, that is, a certain section of the high-speed signal transmission cable 200 is just accommodated in the wire groove 110, and the gap between the high-speed signal transmission cable 200 and the wire groove 110 is neither too large nor too small, which is further conducive to ensuring the symmetry of the high-speed signal transmission cable 200 obtained by the positioning wrapping and pressing process.

[0047] In each embodiment, the wrapping forming roller 100 is provided with a middle area pressing part 120 protruding from the wire passing groove 110, and the middle area pressing part 120 and the wire passing groove 110 have the same first symmetry plane 150; in one embodiment, the wire passing groove 110 and the middle area pressing part 120 are integrally formed. The middle area pressing part 120 is one of the important innovations of the present application, and is the biggest difference from the wrapping forming method of the traditional design of retaining the gap 240. Due to the structure of the middle area pressing part 120, the wrapping forming roller 100 eliminates the gap 240 inside the high-speed signal transmission cable 200 during the positioning wrapping pressing process, and avoids the wrinkle 231 that may be formed on the wrapping tape 230 on the high-speed signal transmission cable 200 due to wrapping, thereby further ensuring the symmetry of the high-speed signal transmission cable 200, that is, ensuring the SI parameter delay difference and common mode to differential mode insertion loss parameters that are greatly affected by symmetry, thereby ensuring the transmission performance of the high-speed signal transmission cable 200.

[0048] Specifically, the middle area pressing part 120 is used to apply pressure to the high-speed signal transmission cable 200 from the middle position when the wrapping forming pressing wheel 100 presses the high-speed signal transmission cable 200, so that the wrapping tape 230 of the high-speed signal transmission cable 200 is closely attached to the internal structure 260, so as to eliminate the gap 240 of the high-speed signal transmission cable 200 at the second symmetry plane 250. The middle position is the position of the second symmetry plane 250. The function of the middle area pressing part 120 is to apply pressure to the wrapping tape 230 at the symmetry axis of the internal structure 260 or the second symmetry plane 250 during the wrapping process, so that the wrapping tape 230 and the internal structure 260 are attached, and the air in the gap 240 between the wrapping tape 230 and the internal structure 260 is squeezed out, that is, the air is squeezed out during the wrapping process, so it is helpful to effectively avoid the wrapping tape 230 on the high-speed signal transmission cable 200 from forming a wrinkle 231 during the wrapping process, which is particularly suitable for the longitudinal wrapping process and can also be used for the transverse wrapping process.

[0049] In one embodiment, the middle area pressing part 120 has a partially circular cross section. That is, along the extension direction or transmission direction of the high-speed signal transmission cable 200, the middle area pressing part 120 has a partially circular cross section, that is, the shape of the cross section is a part of a circle. In one embodiment, the partial circle includes a semicircle and an arcuate shape. In one embodiment, the cross section is a semicircle or an arcuate shape. It can be understood that in the positioning wrapping pressing process, the extension direction and the transmission direction are the same.

[0050] Alternatively, in one embodiment, the middle area pressing portion 120 has a partially elliptical cross-section, and the partial ellipse is a portion of an ellipse; similarly, this partially elliptical cross-section is also obtained relative to the extension direction of the high-speed signal transmission cable 200, and will not be repeated below. In one embodiment, the cross-section is a semi-ellipse or a partial ellipse with a tangent perpendicular to the major axis. In other embodiments, the cross-section can be a partial ellipse with a tangent perpendicular to the minor axis. In this embodiment, the major axis and the minor axis both meet the definition of an ellipse, and the details are omitted.

[0051] In one embodiment, the wire trough 110 has a plane wall portion 131; or, the wire trough 110 has a curved wall portion 132; or, the wire trough 110 has a combination of the plane wall portion 131 and the curved wall portion 132. In one embodiment, as shown in FIG6 , the wire trough 110 has a plane wall portion 131. In practice, it is found that due to the shape of the high-speed signal transmission cable 200 itself, for example, the internal structure 260 of the high-speed signal transmission cable 200 can generally be understood as two cylinders, which are presented as two circles along the extension direction of the high-speed signal transmission cable 200. In this case, the wire trough 110 with a plane wall portion 131 as shown in FIG6 is slightly insufficient in plastic pressing, so it can be combined with the curved wall portion 132 to achieve symmetrical shape optimization of the high-speed signal transmission cable 200.

[0052] In one embodiment, the curved wall portion 132 has an arc-shaped cross section. In one embodiment, as shown in FIG7 , the wire groove 110 has a combined shape of the planar wall portion 131 and the curved wall portion 132. It can be understood that these combined shapes do not affect the symmetrical design of the wire groove 110 in essence.

[0053] Considering the shape of the high-speed signal transmission cable 200 itself, in one embodiment, as shown in FIG8 , the curved wall portion 132 includes a concave wall portion 134 and a convex wall portion 133. Further, in one embodiment, as shown in FIG8 , on the outer side close to the body 140, i.e., on the side close to the external environment, the curved wall portion 132 is a convex wall portion 133, and on the inner side close to the body 140, i.e., on the side close to the rotating shaft of the wrapping molding pressing wheel 100, the curved wall portion 132 is a concave wall portion 134. It can be understood that the convex surface of the convex wall portion 133 and the concave surface of the concave wall portion 134 are both relative to the body 140 and the high-speed signal transmission cable 200, and the purpose is to ensure the symmetry of the high-speed signal transmission cable 200 by positioning the wrapping pressing process, thereby ensuring the transmission performance of the high-speed signal transmission cable 200.

[0054] When only one high-speed signal transmission cable 200 is positioned and wrapped at a time, the wrapping forming roller 100 can be provided with only one wire groove 110; when two or more high-speed signal transmission cables 200 are positioned and wrapped at the same time, in one embodiment, the number of the wire grooves 110 is at least two, so as to process at least two high-speed signal transmission cables 200 at the same time. Considering the space problem of the wrapping process, further, in one embodiment, the number of the wire grooves 110 is two, so as to process two high-speed signal transmission cables 200 at the same time. The traditional wrapping forming roller can only process one by one with real-time detection because the wrapping tape 230 is easy to form a wrinkle 231; in contrast, the structural design of the present application, while ensuring the transmission performance of the high-speed signal transmission cable 200, greatly improves the processing efficiency of the high-speed signal transmission cable 200 in the wrapping forming process, and is particularly suitable for the longitudinal wrapping process, which is impossible to achieve with the traditional process.

[0055] In one embodiment, as shown in FIG9 , the wrapping forming rollers 100 are used in pairs, and the wire grooves 110 of a pair of the wrapping forming rollers 100 are aligned, and the whole is used as a channel 160. The shape of the channel 160, that is, the through surface, is adapted to the cross section of the high-speed signal transmission cable 200 to be pressed. When in use, the high-speed signal transmission cable 200 is passed through the channel 160. The pair of wrapping forming rollers 100 can be called an upper pressing wheel and a lower pressing wheel. The upper pressing wheel is responsible for pressing the upper half of the high-speed signal transmission cable 200, and the lower pressing wheel is responsible for pressing the lower half of the high-speed signal transmission cable 200. Since there is a gap between the upper pressing wheel and the lower pressing wheel for rotation, the height of each pressing wheel groove is approximately equal to half of the height of the wire and slightly smaller than half of the height of the wire to ensure the pressing effect. In one embodiment, the height of the wire groove 110 is 40% to 49% of the height of the high-speed signal transmission cable 200, so that the wrapping forming rollers 100 are used in pairs. Such a structural design is conducive to using a pair of the wrapping forming rollers 100 to jointly press the same high-speed signal transmission cable 200, so that the gap 240 inside the high-speed signal transmission cable 200 can be eliminated, ensuring the symmetry of the high-speed signal transmission cable 200 and avoiding the formation of the wrinkle 231.

[0056] The wrapping forming pressure wheel 100 is described below with reference to Figures 1 to 11. In one embodiment, the wrapping forming pressure wheel 100 uses a shaping guide wheel, i.e., the main body 140, having a protrusion, i.e., the middle area pressing portion 120, to press the wrapping tape 230 into the gap between the two core wires, i.e., the conductor 210. The protrusion matches the shape of the wire slot 110, and the pressure wheel, i.e., the main body 140, is used to press the wrapping tape 230 to a position close to the internal structure 260, thereby avoiding the phenomenon of wrinkling and tilting of the wrapping tape 230 at the gap 240, greatly improving the structural symmetry of the left and right sides of the internal structure 260, thereby greatly improving the SI parameters that are strongly related to symmetry, such as the delay difference and the SCD21 parameter.

[0057] In one embodiment, a high-speed signal transmission cable 200 is shown in Figures 10 and 11, which is made using the wrapping molding pressure wheel 100 described in any embodiment to make the wrapping tape 230 close to the internal structure 260 at the second symmetry plane 250 of the internal structure 260, so as to eliminate the gap 240 at the second symmetry plane 250. That is, under the action of the wrapping and molding pressure wheel 100 and its wire groove 110, the middle area pressing part 120 and other structures, the gap 240 at the second symmetry plane 250 of the internal structure 260 is eliminated through the wrapping and molding process, thereby optimizing the symmetry of the high-speed signal transmission cable 200, which is beneficial to ensuring the transmission performance of the high-speed signal transmission cable 200; and because the gap 240 inside the high-speed signal transmission cable 200 is eliminated, while further ensuring the symmetry of the high-speed signal transmission cable 200, it is beneficial to avoid the formation of a wrinkle 231 on the wrapping tape 230 on the high-speed signal transmission cable 200, which is particularly suitable for the longitudinal wrapping process, and has an excellent elimination effect on the wrinkle 231 formed by the longitudinal wrapping process; in addition, it can also be used for the transverse wrapping process, which can also avoid the formation of a wrinkle 231 on the wrapping tape 230 on the high-speed signal transmission cable 200.

[0058] In one embodiment, the high-speed signal transmission cable 200 includes an internal structure 260 and a wrapping tape 230 wound around the internal structure 260. The internal structure 260 includes a pair of conductors 210 and an insulator 220. The insulator 220 is covered outside the pair of conductors 210 and can also be divided into two insulators 220. Each conductor 210 is provided with a layer of insulator 220. The wrapping tape 230 is wound around all the conductors 210 and the insulator 220. The internal structure 260 and the wrapping tape 230 are tightly fitted. The rest of the embodiments are similar and will not be described in detail.

[0059] It should be noted that other embodiments of the present application also include a wrapping forming pressure wheel and a high-speed signal transmission cable that can be implemented by combining the technical features in the above embodiments.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A wrapping forming pressure wheel (100), characterized in that: It comprises a body (140), and a wire passing groove (110) is provided on the outer edge of the body (140) for positioning and pressing a high-speed signal transmission cable (200) having an internal structure (260) with a symmetrical shape; The wire trough (110) is symmetrical in shape, and the width of the wire trough (110) is adaptively set according to the cable width (270) of the high-speed signal transmission cable (200); The wrapping forming pressing wheel (100) is provided with a middle area pressing portion (120) protruding in the wire passing groove (110), and the middle area pressing portion (120) and the wire passing groove (110) have the same first symmetry plane (150); The middle area pressing portion (120) is used to apply pressure to the high-speed signal transmission cable (200) from a middle position when the high-speed signal transmission cable (200) is pressed by the wrapping molding pressing wheel (100), so that the wrapping tape (230) of the high-speed signal transmission cable (200) is tightly attached to the internal structure (260), so as to eliminate the gap (240) of the high-speed signal transmission cable (200) at the second symmetry plane (250).

2. The wrapping forming pressure wheel (100) according to claim 1, characterized in that: The middle zone pressing portion (120) has a partially circular or partially elliptical cross section.

3. The wrapping forming pressure wheel (100) according to claim 2, characterized in that: The cross section is semicircular, arcuate, semi-elliptical or a partial ellipse with a tangent perpendicular to the major axis.

4. The wrapping forming pressure wheel (100) according to claim 1, characterized in that: The wire passing groove (110) has a plane wall portion (131), a curved wall portion (132), or a combination of the plane wall portion (131) and the curved wall portion (132).

5. The wrapping forming pressure wheel (100) according to claim 4, characterized in that: The curved wall portion (132) has an arc-shaped cross section.

6. The wrapping forming pressure wheel (100) according to claim 4, characterized in that: The curved wall portion (132) includes a concave wall portion (134) and a convex wall portion (133).

7. The wrapping forming pressure wheel (100) according to claim 1, characterized in that: The width of the cable trough (110) is 0.4 mm to 4 mm greater than the cable width (270); and / or, The height of the cable trough (110) is 40% to 49% of the height of the high-speed signal transmission cable (200), so that the wrapping molding pressure wheels (100) are used in pairs.

8. The wrapping forming pressure wheel (100) according to claim 1, characterized in that: The number of the wire-passing grooves (110) is at least two; and / or, The wire passing groove (110) and the middle area pressing portion (120) are integrally formed.

9. The wrapping forming pressure wheel (100) according to any one of claims 1 to 8, characterized in that: When the wrapping molding pressing wheel (100) is positioned to press the high-speed signal transmission cable (200), the first symmetric plane (150) and the second symmetric plane (250) are located in the same plane.

10. A high-speed signal transmission cable (200), characterized in that: The wrapping forming pressure wheel (100) as claimed in any one of claims 1 to 9 is used to make the wrapping tape (230) close to the internal structure (260) at the second symmetry plane (250) of the internal structure (260), so as to eliminate the gap (240) at the second symmetry plane (250).

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