Longitidinal covering wrapping mold for shielded cable

Abstract

A longitudinal covering wrapping mold for a shielded cable, said mold comprising a tightening die head (1), a curling die head (2), and a first friction member (3). The curling die head (2) and the tightening die head (1) are spaced apart, the first friction member (3) is arranged between the curling die head (2) and the tightening die head (1), and a truncated-cone-shaped first channel (11) is penetratingly provided in the tightening die head (1). An opening at the end of the first channel (11) close to the curling die head (2) is larger than an opening at the other end of the first channel (11). A second channel (21) is penetratingly provided in the curling die head (2), and an edge of foil wrapped by the curling die head (2) is subjected to friction treatment by means of the first friction member (3), so that the foil is more tightly attached to the surface of a cable core, and the wrapping shielding effect is improved. The fit between the foil and the cable core and the foil wrapping effect are improved by means of the first friction member (3), and the present invention has good application prospects.

Description

A longitudinal wrapping die for shielded cable Technical Field

[0001] The present invention relates to the technical field of cable production equipment, in particular to a shielded cable longitudinal wrapping mould. Background Art

[0002] During the processing and production of shielded cables, a metal foil shielding layer needs to be wrapped around the outside of the cable core. Usually, the metal foil shielding layer is longitudinally wrapped around the outside of the cable core with the help of a mold guide.

[0003] In the prior art, the mold usually has a gradual trumpet-shaped cavity, through which the flat metal foil is guided and bent so as to be wrapped around the outside of the cable core. Such a wrapping mold uses the shape of the inner cavity as a constraint. During the conveying and guiding process, the metal foil itself is bent along with the guidance of the mold cavity. During this process, the metal foil will be affected by the friction force of the mold cavity and its own elastic restoring force. Therefore, in the actual production process, the metal foil guided by the mold is prone to wrinkles and loose wrapping after longitudinal wrapping, which will seriously affect the shielding effect of the shielded cable.

[0004] In view of this, how to improve the longitudinal wrapping quality of the shielding metal foil of the shielded cable and reduce the probability of the problem of loose wrapping has become one of the technical problems that need to be solved urgently.

[0005] Summary of the Invention

[0006] In view of this, the present invention proposes a longitudinal wrapping die for a shielded cable, aiming to improve the longitudinal wrapping quality.

[0007] The technical solution of the present invention is implemented as follows: the present invention provides a longitudinal wrapping die for a shielded cable, comprising a tightening die head, a curling die head and a first friction member, the curling die head and the tightening die head are spaced apart, the first friction member is arranged between the curling die head and the tightening die head, a truncated cone-shaped first channel is provided through the tightening die head, the opening of the first channel at one end close to the curling die head is larger than the opening at the other end of the first channel, a second channel is provided through the curling die head, the opening of the second channel at one end close to the tightening die head is a discharge port, and the second channel is away from the tightening die head. The opening at one end is a feed port, and the flat shielding foil and the cable core enter from the feed port at the same time. After curling through the second channel, the shielding foil is longitudinally wrapped on the outside of the cable core. The shielding foil has the same wrapping direction along the circumference of the cable core, and the two side edges of the shielding foil along the circumference of the cable core are respectively a first side edge and a second side edge. The first side edge covers a side surface of the second side edge away from the cable core, and the friction portion of the first friction member is in friction contact with a side surface of the first side edge away from the second side edge. The friction direction of the friction portion of the first friction member relative to the first side edge is the same as the winding direction of the first side edge.

[0008] In the above embodiment, the shielding foil is pre-wrapped together with the cable core by being curled through a curling die. After coating, there is a partial overlap between the first side and the second side of the foil along the circumference of the cable core, wherein the first side is stacked above the second side. In order to allow the pre-wrapped shielding foil to be completely covered on the second side during the tightening process in the tightening die, and to improve the covering fit of the shielding foil, a first friction member is arranged between the curling die and the tightening die, and the friction portion of the first friction member is used to rub the first side, thereby driving the first side to be tightened and wound and improving its coverage on the second side.

[0009] In some embodiments, the invention further comprises a sliding shaft, wherein the number of the sliding shafts is at least two, and the tightening die head and the curling die head are both slidably disposed on the sliding shaft.

[0010] The sliding shaft makes the distance between the mobile phone die head and the crimping die head adjustable.

[0011] In some embodiments, the invention further includes a first sliding seat, wherein the first sliding seat is slidably disposed on the sliding shaft, and the first friction member is fastened to the first sliding seat.

[0012] The first sliding seat is provided to adjust the position of the first friction member. The first sliding seat can rotate relative to the sliding shaft, thereby changing the angle of the first friction member relative to the sliding shaft.

[0013] In some embodiments, the first friction member includes a first base, a first roller, a first motor and a first friction belt. The two parallel first rollers are rotatably arranged on the first base. The first base is detachably mounted on the first sliding seat. The first motor is fixed on the first base. The first motor is transmission-connected to the two first rollers. The first friction belt is rollingly sleeved on the outside of the two first rollers, and the outer surface of the first friction belt is in friction contact with the first side.

[0014] In the above embodiment, the dynamic friction coefficient of the surface of the first friction belt is 0.1-0.4.

[0015] In some embodiments, it also includes a second sliding seat and a second friction member, the second sliding seat is slidably set on the sliding shaft, the second friction member is fastened to the second sliding seat, the second friction member is spaced apart on the side of the first friction member close to the tightening die head, the friction portion of the second friction member is in friction contact with the surface of the second side away from the cable core, and the friction direction of the friction portion of the second friction member relative to the second side is opposite to the winding direction of the second side.

[0016] In the above embodiments, the second friction member is used to rub the second side, thereby causing the second side to similarly approach the cable core and increasing the overlap with the first side, thereby improving the fit of the shielding foil and reducing the likelihood of inadequate wrapping. Simultaneously, the frictional force exerted by the second friction member on the second side balances the frictional force exerted by the first friction member on the first side, preventing the shielding foil from shifting circumferentially along the cable core due to the frictional force of the first friction member, which could affect the quality of the longitudinal wrapping.

[0017] In some embodiments, the second friction member includes a second base, a second roller, a second motor and a second friction belt. The two parallel second rollers are rotatably arranged on the second base. The second base is detachably mounted on the second sliding seat. The second motor is fixed on the second base. The second motor is transmission-connected to the two second rollers. The second friction belt is rollingly sleeved on the outside of the two second rollers, and the outer surface of the second friction belt is in friction contact with the second side.

[0018] In the above embodiment, the dynamic friction coefficient of the second friction belt is 0.1-0.4.

[0019] In some embodiments, a third sliding seat and an isolation plate are further included, wherein the third sliding seat is slidably set on the sliding shaft, the isolation plate is fastened to the third sliding seat, the isolation plate is spaced between the first friction member and the second friction member, and the end of the isolation plate away from the third sliding seat is set between the first side edge and the second side edge.

[0020] In some embodiments, a bending die is further included, which is slidably arranged on a sliding shaft. The bending die is spaced apart on the side of the curling die away from the tightening die. A cable core channel and a foil channel are respectively opened in the bending die along the axial direction of the sliding shaft. The end of the foil channel away from the curling die is a linear opening, and the end of the foil channel close to the curling die is an S-shaped opening.

[0021] The longitudinal wrapping mold for shielded cables of the present invention has the following advantages over the prior art:

[0022] The longitudinal wrapping mold of the present invention is provided with a curling die and a tightening die. The curling die is used to longitudinally wrap the shielding foil in a directional manner and wind it on the outside of the cable core. The tightening die is used to tighten and cover the shielding foil after being longitudinally wrapped by the curling die. In order to overcome the problem that the edges of the shielding foil after being wrapped may not be completely overlapped and shielded, the present invention arranges a first friction member between the spaced curling die and the tightening die. The friction effect of the first friction member is used to drive the edge of the shielding foil after being wound by the curling die to move in the winding direction, so that the shielding foil can be kept as close to the cable core as possible before entering the tightening die for tightening processing, thereby improving the overlapping coverage of the foil edge and reducing the probability of failing to achieve the shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] FIG1 is an axonometric view of a longitudinal wrapping die for a shielded cable according to the present invention;

[0025] FIG2 is an axonometric view of a longitudinal wrapping die for a shielded cable according to the present invention;

[0026] FIG3 is an exploded view of a longitudinal wrapping die for a shielded cable according to the present invention;

[0027] FIG4 is an exploded view of the first friction member in the longitudinal wrapping die for shielded cables according to the present invention;

[0028] FIG5 is an exploded view of the second friction member in the longitudinal wrapping mold for the shielded cable of the present invention.

[0029] In the figure: 1-tightening die, 2-curling die, 3-first friction member, 4-sliding shaft, 5-first sliding seat, 6-second sliding seat, 7-second friction member, 8-third sliding seat, 9-isolation plate, 10-bending die, 11-first channel, 21-second channel, 22-discharge port, 23-feed port, 31-first base, 32-first roller, 33-first motor, 34-first friction belt, 71-second base, 72-second roller, 73-second motor, 74-second friction belt, 101-cable core channel, 102-foil channel. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. If the definitions set forth in this section are contrary to or otherwise inconsistent with definitions set forth in the patents, patent applications, published patent applications, and other publications incorporated herein by reference, the definitions listed in this section take precedence over the definitions incorporated herein by reference.

[0035] As shown in Figure 1, in combination with Figures 2-5, a longitudinal wrapping die for a shielded cable according to one embodiment of the present invention includes a tightening die head 1, a curling die head 2 and a first friction member 3. The curling die head 2 is spaced apart from the tightening die head 1, and the first friction member 3 is arranged between the curling die head 2 and the tightening die head 1. A truncated cone-shaped first channel 11 is provided through the tightening die head 1, and the opening of one end of the first channel 11 close to the curling die head 2 is larger than the opening of the other end of the first channel 11. A second channel 21 is provided through the curling die head 2, and the opening of the end of the second channel 21 close to the tightening die head 1 is a discharge port 22, and the opening of the end of the second channel 21 away from the tightening die head 1 is a feed port 23. The flat shielding foil and the cable core are connected from the feed port to the cable core. The material port 23 enters at the same time, and after being curled through the second channel 21, the shielding foil is longitudinally wrapped on the outside of the cable core. The shielding foil has the same wrapping direction along the circumference of the cable core, and the wrapping direction is determined by the inner cavity shape of the second channel 21. The second channel 21 with a specific shape makes the wrapping direction of the foil on the surface of the wrapped cable output from the material outlet 23 fixed. Specifically, the two side edges of the shielding foil along the circumference of the cable core are respectively the first side edge and the second side edge, and the first side edge covers the side surface of the second side edge away from the cable core, and the friction portion of the first friction member 3 is in friction contact with the side surface of the first side edge away from the second side edge, and the friction direction of the friction portion of the first friction member 3 relative to the first side edge is the same as the winding direction of the first side edge.

[0036] In the above embodiment, the feed port 23 can feed the foil and the cable core at the same time. During feeding, the foil is flat and arranged on one side of the cable core. After passing through the second channel 21, the two ends of the foil along the width direction are wrapped around the surface of the cable core, and the first side covers the outside of the second side. Due to the structural design of the second channel 21, the first side is always located on the same side of the foil along the width direction. After the foil is curled and wrapped by the curling die 2, it is impossible for the foil to be completely close to the cable core. Therefore, a first friction member 3 is provided. The friction portion of the first friction member 3 is in friction contact with the surface of the first side. During the friction process of the first friction member 3, the first side is driven to be close to the cable core, thereby increasing the overlapping degree of the first side covering the edge of the second side, so that the surface fit of the cable is higher before entering the tightening die 1 for tightening, and reducing the probability of the loose edge structure being damaged by friction, folding and damage in the tightening die 1.

[0037] In some specific exemplary structures, the feed port 23 includes a cable core opening and a foil opening, the two openings are merged, and a tooth-shaped protrusion is provided in the discharge port 22, and the tooth-shaped protrusion is involute shape along the cross-sectional direction of the second channel 21. The tooth-shaped protrusion includes two side surfaces, one of which forms an acute angle with the inner side wall of the discharge port 22, and the angle is used to limit the first side, and the other side smoothly transitions to the inner side wall of the discharge port, and the side is used to guide the second side into the side of the first side close to the cable core, so that the first side and the second side are superimposed on each other.

[0038] In some embodiments, a sliding shaft 4 is further included, and the number of the sliding shafts 4 is at least two, and the tightening die head 1 and the curling die head 2 are both slidably arranged on the sliding shaft 4 .

[0039] The sliding shaft 4 allows the distance between the tightening die head 1 and the curling die head 2 to be adjusted. Specifically, bolt holes are provided on the surfaces of the tightening die head 1 and the curling die head 2. The bolts are screwed into the bolt holes and can be selectively tightened on the surface of the sliding shaft 4, thereby enabling the tightening die head 1 and the curling die head 2 to selectively slide on the surface of the sliding shaft 4.

[0040] In some embodiments, a first sliding seat 5 is further included. The first sliding seat 5 is slidably disposed on the sliding shaft 4 , and the first friction member 3 is fastened to the first sliding seat 5 .

[0041] In the above embodiments, the friction contact position of the first friction member 3 between the tightening die 1 and the curling die 2 will have some influence on the longitudinal wrapping effect. The influence mainly depends on the change in the surface curvature of the first side after the friction contact of the first friction member 3. When targeting different production conditions, the first friction member 3 needs to be properly adjusted to obtain the optimal longitudinal wrapping effect. Therefore, the above embodiments use a sliding seat 5 to support the first friction member 3, so that the first friction member 3 can slide relative to the sliding shaft 4. The sliding includes reciprocating sliding along the axial direction of the sliding shaft 4, and also includes circumferential rotational sliding along the sliding shaft 4. During the rotational sliding process, the angle of the first friction member 3 relative to the cable is different, so the static pressure acting on the surface of the first side is also different, which directly affects the friction effect.

[0042] In some embodiments, the first friction member 3 includes a first base 31, a first roller 32, a first motor 33 and a first friction belt 34. The two parallel first rollers 32 are rotatably arranged on the first base 31. The first base 31 is detachably mounted on the first sliding seat 5. The first motor 33 is fixed on the first base 31. The first motor 33 is transmission-connected to the two first rollers 32. The first friction belt 34 is rollingly sleeved on the outside of the two first rollers 32. The outer surface of the first friction belt 34 is in friction contact with the first side.

[0043] The above embodiment is shown in Figure 4, where the two first rollers 32 are used to support the first friction belt 34, and the two first rollers 32 are driven by the first motor 33. Specifically, the output shaft of the first motor 33 can drive the first rollers 32 to rotate through a transmission belt, or can drive the two first rollers 32 to rotate through a chain gear. During the rotation of the two first rollers 32, the first friction belt 34 in rolling contact with them is driven to roll. The first friction belt 34 serves as the friction portion of the first friction member 3, makes surface contact with the first side edge, and drives the first side edge to move in the direction of being close to the surface of the cable core.

[0044] In some embodiments, a long bolt hole is further provided on the first base 31, and a bolt is passed through the long bolt hole and then threadedly connected to the first sliding seat 5 to achieve the first friction member 3 being fastened and installed on the first sliding seat 5. Preferably, the length direction of the long bolt hole is perpendicular to the axial direction of the sliding shaft 4; by changing the position of the bolt in the long bolt hole, the position of the first base 31 relative to the first sliding seat 5 can be adjusted to adapt to the longitudinal wrapping processing of different cables.

[0045] It should be understood that the friction between the first friction belt 34 in the first friction member 3 and the first side is dynamic friction.

[0046] In some embodiments, it also includes a second sliding seat 6 and a second friction member 7, the second sliding seat 6 is slidably set on the sliding shaft 4, the second friction member 7 is fastened to the second sliding seat 6, the second friction member 7 is spaced apart on the side of the first friction member 3 close to the tightening die 1, the friction portion of the second friction member 7 is in friction contact with the surface of the second side away from the cable core, and the friction direction of the friction portion of the second friction member 7 relative to the second side is opposite to the winding direction of the second side.

[0047] In the aforementioned embodiment, the first friction member 3 frictionally drives the first side. During this process, the foil wound on the surface of the cable core may be deflected due to excessive friction force, thereby losing the covering state, which will directly affect the normal production and processing of the cable. In order to avoid the occurrence of this problem, a second friction member 7 is provided. The friction portion of the second friction member 7 dynamically rubs against the surface of the second side, and the direction of friction driving is opposite to the direction of friction driving of the first friction member 3. The above-mentioned second friction member 7 is used to balance the friction force of the first friction member 3, thereby effectively avoiding problems such as deflection and twisting of the shielding foil. Secondly, the friction driving of the second side by the second friction member 7 can also promote the second side to be close to the surface of the cable core, thereby improving the covering shielding effect.

[0048] In the above embodiments, the first friction member 3 and the second friction member 7, under the action of friction, not only make the foil material close to the cable core surface, but also can increase the static pressure and friction between the foil material and the cable core, further promote the stability of the shielding foil material on the cable core surface, and reduce the probability of the foil material deflecting and twisting relative to the cable core.

[0049] In the above embodiment, the second sliding seat 6 is used to support the second friction member 7. The second sliding seat 6 can slide along the axial direction relative to the sliding shaft 4, and can also rotate along its circumferential direction relative to the sliding shaft 4. By adjusting the position of the second friction member 7 along the axial direction, the position where the second friction member 7 and the second side edge come into frictional contact can be changed. By changing the angle of the second friction member 7 relative to the sliding shaft 4, the pressure between the friction portion of the second friction member 7 and the surface of the second side edge can be changed, thereby changing the friction intensity.

[0050] In some embodiments, the second friction member 7 includes a second base 71, a second roller 72, a second motor 73 and a second friction belt 74. The two parallel second rollers 72 are rotatably set on the second base 71. The second base 71 is detachably mounted on the second sliding seat 6). The second motor 73 is fixed on the second base 71. The second motor 73 is transmission-connected to the two second rollers 72. The second friction belt 74 is rollingly sleeved on the outside of the two second rollers 72. The outer surface of the second friction belt 74 is in friction contact with the second side.

[0051] In the above embodiments, the structure of the second friction member 7 is the same as that of the first friction member 3 .

[0052] In some other embodiments, the first friction member 3 and the second friction member 7 may also adopt other existing structures that can generate friction.

[0053] In some embodiments, a third sliding seat 8 and an isolation plate 9 are also included. The third sliding seat 8 is slidably set on the sliding shaft 4, and the isolation plate 9 is fastened to the third sliding seat 8. The isolation plate 9 is spaced between the first friction member 3 and the second friction member 7, and the end of the isolation plate 9 away from the third sliding seat 8 is set between the first side and the second side.

[0054] In the above embodiment, the function of the isolation plate 9 is, on the one hand, to isolate the first side and the second side, so that the subsequent first friction member 3 will not be affected by the static friction force of the second side when frictionally winding the first side; on the other hand, the isolation plate 9 can also press the second side after the second friction member 7 is frictionally wound and tightly attached, to prevent the second side from separating from the cable core again after being frictionally wound and tightly attached by the second friction member 7.

[0055] In the above embodiment, the surface of the isolation plate 9 has a relatively low friction coefficient, which is lower than 0.1.

[0056] In the above embodiment, the third sliding seat 8 is used to support the isolation plate 9 , thereby enabling movement and angle adjustment of the isolation plate 9 .

[0057] In some embodiments, a bending die 10 is further included, and the bending die 10 is slidably set on the sliding shaft 4. The bending die 10 is spaced apart on the side of the curling die 2 away from the tightening die 1. A cable core channel 101 and a foil channel 102 are respectively opened in the bending die 10 along the axial direction of the sliding shaft 4. The end of the foil channel 102 away from the curling die 2 is a linear opening, and the end of the foil channel 102 close to the curling die 2 is an S-shaped opening.

[0058] In the above embodiment, the function of the bending die 10 is to bend the two sides of the shielding foil to be wound along the width direction to form a first side and a second side after bending. After winding, the first side and the second side can be interlocked with each other through the bent part to form a maze structure. On the one hand, the interlocked first side and the second side can have a certain degree of fit and sealing, thereby improving the shielding effect. On the other hand, the structural strength of the first side and the second side after bending is higher. During the tightening process, the edges of the bends are not prone to produce stress concentration points, thereby greatly reducing the possibility of tearing due to friction and tearing.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A longitudinal wrapping die for a shielded cable, characterized in that: The invention comprises a tightening die head (1), a curling die head (2) and a first friction member (3), wherein the curling die head (2) and the tightening die head (1) are arranged at a distance, and the first friction member (3) is arranged between the curling die head (2) and the tightening die head (1); a truncated cone-shaped first channel (11) is provided through the tightening die head (1), and an opening at one end of the first channel (11) close to the curling die head (2) is larger than an opening at the other end of the first channel (11); a second channel (21) is provided through the curling die head (2), and an opening at one end of the second channel (21) close to the tightening die head (1) is a discharge port (22), and the second channel (21) is away from the tightening die head. One end opening of the tightening die head (1) is a feed port (23), and the flat shielding foil and the cable core enter from the feed port (23) at the same time. After being curled through the second channel (21), the shielding foil is longitudinally wrapped around the outside of the cable core. The shielding foil has the same wrapping direction along the circumference of the cable core, and the two side edges of the shielding foil along the circumference of the cable core are respectively a first side edge and a second side edge, and the first side edge covers a side surface of the second side edge away from the cable core, and the friction portion of the first friction member (3) is in frictional contact with a side surface of the first side edge away from the second side edge, and the friction direction of the friction portion of the first friction member (3) relative to the first side edge is the same as the winding direction of the first side edge.

2. The longitudinal wrapping mold for shielded cables according to claim 1, characterized in that: It also comprises a sliding shaft (4), the number of the sliding shafts (4) is at least two, and the tightening die head (1) and the curling die head (2) are both slidably arranged on the sliding shaft (4).

3. The longitudinal wrapping mold for shielded cables according to claim 2, characterized in that: It also comprises a first sliding seat (5), wherein the first sliding seat (5) is slidably arranged on the sliding shaft (4), and the first friction member (3) is fixedly mounted on the first sliding seat (5).

4. The longitudinal wrapping die for a shielded cable according to claim 3, characterized in that: The first friction member (3) comprises a first base (31), a first roller (32), a first motor (33) and a first friction belt (34); two parallel first rollers (32) are both rotatably arranged on the first base (31); the first base (31) is detachably mounted on the first sliding seat (5); the first motor (33) is fixed on the first base (31); the first motor (33) is transmission-connected to the two first rollers (32); the first friction belt (34) is rollingly sleeved on the outside of the two first rollers (32); and the outer surface of the first friction belt (34) is in frictional contact with the first side edge.

5. The longitudinal wrapping die for a shielded cable according to claim 2, characterized in that: It also comprises a second sliding seat (6) and a second friction member (7), wherein the second sliding seat (6) is slidably arranged on the sliding shaft (4), the second friction member (7) is fixedly mounted on the second sliding seat (6), the second friction member (7) is spaced apart on a side of the first friction member (3) close to the tightening die head (1), the friction portion of the second friction member (7) is in frictional contact with a surface of a side of the second side away from the cable core, and the friction direction of the friction portion of the second friction member (7) relative to the second side is opposite to the winding direction of the second side.

6. The longitudinal wrapping die for a shielded cable according to claim 5, characterized in that: The second friction member (7) comprises a second base (71), a second roller (72), a second motor (73) and a second friction belt (74); two parallel second rollers (72) are both rotatably arranged on the second base (71); the second base (71) is detachably mounted on the second sliding seat (6); the second motor (73) is fixed on the second base (71); the second motor (73) is transmission-connected to the two second rollers (72); the second friction belt (74) is rollingly sleeved on the outer sides of the two second rollers (72); and the outer surface of the second friction belt (74) is in frictional contact with the second side edge.

7. The longitudinal wrapping mold for a shielded cable according to claim 5, characterized in that: The invention also comprises a third sliding seat (8) and an isolation plate (9), wherein the third sliding seat (8) is slidably arranged on the sliding shaft (4), and the isolation plate (9) is fixedly mounted on the third sliding seat (8), the isolation plate (9) is arranged at intervals between the first friction member (3) and the second friction member (7), and one end of the isolation plate (9) away from the third sliding seat (8) is arranged between the first side edge and the second side edge.

8. The longitudinal wrapping die for a shielded cable according to claim 2, characterized in that: The invention also comprises a bending die (10), wherein the bending die (10) is slidably arranged on the sliding shaft (4), and the bending die (10) is arranged at a distance on a side of the curling die (2) away from the tightening die (1), and a cable core channel (101) and a foil channel (102) are respectively opened in the bending die (10) along the axial direction of the sliding shaft (4), and the end of the foil channel (102) away from the curling die (2) is a linear opening, and the end of the foil channel (102) close to the curling die (2) is an S-shaped opening.

Images