A copper strip longitudinal wrapping forming device

Abstract

The present application relates to the technical field of submarine cable production and manufacturing, and particularly relates to a copper strip longitudinal wrapping forming device, which comprises: sequentially arranged longitudinal wrapping forming components, a first heating mechanism, a first extrusion wheel set and a second heating mechanism, the longitudinal wrapping forming components are used for wrapping copper strips outside a cable core, the first heating mechanism is used for heating air in the copper strips, the first extrusion wheel is used for adhering the copper strips to the cable core and extruding the air in the copper strips, and the second heating mechanism is used for sealing the joint of the copper strips. The copper strip longitudinal wrapping forming device can solve the problem that air is left in the copper strips after longitudinal wrapping forming in the prior art, which can cause the volume of the internal air to change greatly under thermal expansion and cold contraction in the subsequent use process, and can easily cause damage to the insulation.

Description

Technical Field

[0001] This invention relates to the field of submarine cable manufacturing technology, specifically to a copper strip longitudinal wrapping forming device. Background Technology

[0002] Bipolar cables can be used in submarine observation network systems. Traditional submarine optical cables are divided into those with repeaters and those without. In the former, the copper tube mainly supplies power to wet-end equipment such as repeaters, while in the latter, it is mainly used for fault location. However, in submarine observation network systems, there are many wet-end devices that need to be connected, and reverse signal transmission is required. Therefore, the submarine optical cables used need to have a bipolar structure. Generally, the first pole of a bipolar cable uses a welded copper tube, followed by an extruded insulation layer to isolate the two poles. There are many methods for the second pole, such as welding a copper tube to the outside of the inner insulation layer or longitudinally wrapping copper tape around the outside of the inner insulation layer.

[0003] In the method of longitudinally wrapping copper strips on the outside of the inner insulation layer, a copper strip longitudinal wrapping forming device is required. However, in the existing copper strip longitudinal wrapping forming device, the inner cable core is an insulating sheath with large fluctuations in outer diameter. After the copper strip is longitudinally wrapped, air will remain inside the copper strip. During subsequent use, the internal air will change in volume due to thermal expansion and contraction, which can easily damage the copper strip. Summary of the Invention

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a copper strip longitudinal wrapping forming device, which can solve the problem that after the copper strip is longitudinally wrapped, air will remain inside the copper strip, which will cause large volume changes of the internal air under thermal expansion and contraction during subsequent use, and easily damage the insulation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] The present invention provides a copper strip longitudinal wrapping forming device, characterized in that it includes: a longitudinal wrapping forming component, a first heating mechanism, a first extrusion roller group and a second heating mechanism arranged in sequence. The longitudinal wrapping forming component is used to wrap the copper strip around the outside of the cable core. The first heating mechanism is used to heat the air inside the copper strip. The first extrusion roller is used to press the copper strip and the cable core together and squeeze out the air inside the copper strip. The second heating mechanism is used to seal the joint of the copper strip.

[0007] In some alternative embodiments, the first compression roller assembly includes two horizontally arranged first compression rollers, each equipped with a first tension adjuster, which is used to adjust the compression force of the corresponding first compression roller so that the copper strip passing through fits the cable core.

[0008] In some alternative solutions, a detection mechanism is provided between the longitudinal forming assembly and the first heating mechanism. The detection mechanism is used to detect the position of the copper strip seam and, in conjunction with the first tension adjuster, adjusts the extrusion pressure of the first extrusion roller so that the copper strip seam faces upward.

[0009] In some alternative configurations, the first heating mechanism is located below the copper strip, and the second heating mechanism is located above the copper strip.

[0010] In some alternative embodiments, the first tension adjuster includes an adjusting element and a spring, one end of the spring abutting against the shaft of the first compression wheel, and the adjusting element abutting against the other end of the spring for adjusting the preload of the spring.

[0011] In some alternative embodiments, the copper strip longitudinal wrapping forming device further includes a second extrusion roller assembly located after the second heating mechanism for bonding the copper strip to the cable core.

[0012] In some alternative embodiments, the second compression roller set includes two horizontally arranged second compression rollers, each equipped with a second tension adjuster for adjusting the compression force of the two sets of second compression rollers so that the passing copper strip adheres to the cable core.

[0013] In some alternative solutions, both the first heating mechanism and the second heating mechanism include an inner tube and a liquid-cooled pipe wrapped around the outside of the end of the inner tube, the liquid-cooled pipe being used to regulate the temperature at the inlet of the inner tube.

[0014] In some alternative embodiments, the longitudinal forming assembly includes a first forming wheel set, a horn mold, and a second forming wheel set arranged sequentially.

[0015] In some alternative solutions, the first molding wheel set, the horn mold, and the second molding wheel set are all provided with a base, and their vertical positions can be adjusted on the base.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This solution utilizes the cooperation of a first heating mechanism, a first extrusion roller group, and a second heating mechanism. The first heating mechanism heats and forces the air inside the copper strip out of the joint. The first extrusion roller group further extrudes the air from the copper strip and brings the copper strip into contact with the cable core. Then, the second heating mechanism seals the joint of the copper strip, reducing the possibility of external gas re-entering. A second extrusion roller group is also provided after the second heating mechanism. The copper strip is still in a soft state after passing through the second heating mechanism, and the second extrusion roller group can further bring the copper strip into contact with the cable core. This achieves the goal of maximizing the removal of air remaining inside the copper strip after longitudinal wrapping. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view schematic diagram of the copper strip longitudinal wrapping forming device in an embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the copper strip longitudinal wrapping forming device in an embodiment of the present invention.

[0020] In the diagram: 1. Longitudinal forming assembly; 11. First forming wheel assembly; 12. Horn mold; 13. Second forming wheel assembly; 2. First heating mechanism; 241. Inner tube; 242. Liquid cooling pipe; 3. First extrusion wheel assembly; 31. First extrusion wheel; 32. First tension regulator; 4. Second heating mechanism; 5. Detection mechanism; 6. Second extrusion wheel assembly; 61. Second extrusion wheel; 62. Second tension regulator; 7. Base. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, in one aspect, the present invention provides a copper strip longitudinal wrapping forming device, comprising: a longitudinal wrapping forming component 1, a first heating mechanism 2, a first extrusion roller group 3, and a second heating mechanism 4 arranged sequentially. The longitudinal wrapping forming component 1 is used to wrap the copper strip around the outside of the cable core, the first heating mechanism 2 is used to heat the air inside the copper strip, the first extrusion roller group 3 is used to press the copper strip and the cable core together and squeeze out the air inside the copper strip, and the second heating mechanism 4 is used to seal the joint of the copper strip.

[0024] When using this device, the copper strip is wrapped around the outside of the cable core by the longitudinal wrapping forming assembly 1. At this point, the copper strip is initially wrapped around the outside of the cable core, but the seam of the copper strip is not yet sealed. The first heating mechanism 2 heats the air inside the copper strip, and the heated air is squeezed out from the seam. The first extrusion roller assembly 3 presses the copper strip against the cable core. At this point, the seam of the copper strip is not yet sealed, and the air inside the copper strip can be further squeezed out. The second heating mechanism 4 seals the seam of the copper strip, which can reduce the possibility of external gas re-entering the copper strip through the seam. In this scheme, the cooperation of the first heating mechanism 2, the first extrusion roller assembly 3, and the second heating mechanism 4, through the first heating mechanism 2 heating the air inside the copper strip and squeezing it out from the seam, the first extrusion roller assembly 3 further squeezing out the air inside the copper strip and pressing the copper strip against the cable core, and finally through the second heating mechanism 4 sealing the seam of the copper strip, reduces the possibility of external gas re-entering. This achieves the goal of maximizing the removal of air remaining inside the copper strip after longitudinal wrapping, especially for cable cores with large outer diameter fluctuations.

[0025] In some optional embodiments, the first extrusion roller group 3 includes two sets of horizontally arranged first extrusion rollers 31, each of which is equipped with a first tension adjuster 32. The first tension adjuster 32 is used to adjust the extrusion force of the corresponding first extrusion roller 31 so that the copper strip passing through fits the cable core.

[0026] In this embodiment, the outer edge of the first extrusion roller 31 is provided with an extrusion groove. The copper strip wrapped around the outside of the cable core passes through the extrusion grooves on the outer edges of the two first extrusion rollers 31, so that the copper strip initially adheres to the cable core. In addition, since each of the first extrusion rollers 31 is equipped with a first tension adjuster 32, the first tension adjuster 32 can provide a certain clamping force for the first extrusion rollers 31 to extrude the copper strip. When the outer diameter of the cable core fluctuates, the first extrusion rollers 31 can adjust their position to keep the clamping force of the first extrusion rollers 31 constant, so that the copper strip and the inner sheath cable core are more tightly adhered and the internal gap is reduced.

[0027] In some optional embodiments, a detection mechanism 5 is provided between the longitudinal forming assembly 1 and the first heating mechanism 2. The detection mechanism 5 is used to detect the position of the copper strip seam and, in conjunction with the first tension adjuster 32, adjusts the extrusion force of the first extrusion roller 31 so that the copper strip seam faces upward.

[0028] In this embodiment, a detection mechanism 5 is set in front of the first heating mechanism 2 to detect the position of the copper strip seam. When the position of the copper strip seam is not directly above, the pressure of the two first extrusion rollers 31 equipped with the first tension regulator 32 in the first extrusion roller group 3 can be adjusted so that the copper strip seam faces upward. In this way, when the first heating mechanism 2 heats the copper strip, the air inside the copper strip can be heated and better overflow from the copper strip seam.

[0029] In some alternative embodiments, the first heating mechanism 2 is located below the copper strip, and the second heating mechanism 4 is located above the copper strip.

[0030] In this embodiment, the first heating mechanism 2 is positioned below the copper strip to heat the lower part of the copper strip. This, combined with adjusting the seam of the copper strip to the top, facilitates the release of heated gas from inside the copper strip. Furthermore, the second heating mechanism 4 is positioned above the copper strip, also adjusting the seam to the top to ensure a tight seal and reduce the possibility of external gas re-entering.

[0031] In some alternative embodiments, the first tension adjuster 32 includes an adjusting member and a spring, one end of the spring abutting against the shaft of the first compression wheel 31, and the adjusting member abutting against the other end of the spring for adjusting the preload of the spring.

[0032] As the copper strip wrapping the cable core passes through the two first compression rollers 31, the first compression rollers 31 also rotate. In this embodiment, one end of a spring abuts against the shaft of the first compression roller 31, and an adjusting member abuts against the other end of the spring. The preload is adjusted by adjusting the preload length of the spring. Thus, if the outer diameter of the cable core fluctuates significantly when the copper strip wrapping the cable core passes through the two first compression rollers 31, the first tension adjuster 32 can provide a certain clamping force to the first compression rollers 31, allowing the first compression rollers 31 to adjust their position automatically. Furthermore, the spring maintains a constant clamping force on the first compression rollers 31, resulting in a tighter fit between the copper strip and the inner cable core, reducing internal gaps.

[0033] In other embodiments, the clamping force of the two first extrusion rollers 31 can also be adjusted by means of a pneumatic telescopic cylinder. As long as the clamping force of the two first extrusion rollers 31 can be maintained, a similar effect can be achieved.

[0034] In some alternative embodiments, the copper strip longitudinal wrapping forming device further includes a second extrusion roller group 6, which is located after the second heating mechanism 4, for bonding the copper strip to the cable core.

[0035] In this embodiment, the cooperation of the first heating mechanism 2, the first extrusion roller group 3, and the second heating mechanism 4 is as follows: the first heating mechanism 2 heats the air inside the copper strip and squeezes it out from the joint; the first extrusion roller group 3 further squeezes out the air inside the copper strip and makes the copper strip adhere to the cable core; then the second heating mechanism 4 seals the joint of the copper strip. Since the second extrusion roller group 6 is located after the second heating mechanism 4, the copper strip is still in a soft state after passing through the second heating mechanism 4, and the second extrusion roller group 6 can make the copper strip adhere to the cable core further.

[0036] In some optional embodiments, the second compression roller group 6 includes two horizontally arranged second compression rollers 61, each of which is equipped with a second tension adjuster 62. The second tension adjuster 62 is used to adjust the compression force of the two groups of second compression rollers 61 so that the copper strip passing through fits the cable core.

[0037] In this embodiment, the second extrusion roller group 6 has the same structure as the first extrusion roller group 3. The second tension adjuster 62 can provide a certain clamping force for the second extrusion roller 61 to extrude the copper strip. When the outer diameter of the cable core fluctuates, the second tension adjuster 62 can make the second extrusion roller 61 adjust its position by itself, so that the clamping force of the second extrusion roller 61 remains constant, making the copper strip and the inner sheath cable core fit more tightly and reducing the internal gap.

[0038] In some optional embodiments, both the first heating mechanism 2 and the second heating mechanism 4 include an inner tube 241 and a liquid cooling pipe 242 wrapped around the outside of the end of the inner tube 241. The liquid cooling pipe 242 is used to regulate the temperature of the inlet of the inner tube 241.

[0039] In this embodiment, the opening of the inner tube 241 faces the copper strip. Specifically, the opening of the inner tube 241 of the first heating mechanism 2 faces upward, directly opposite the back of the copper strip seam. The opening of the inner tube 241 of the second heating mechanism 4 faces downward, directly opposite the copper strip seam. A liquid cooling tube 242 is wrapped around the outer side of the end of the inner tube 241 to regulate and maintain the temperature at the opening of the inner tube 241, preventing the temperature at the opening from accumulating too high due to prolonged heating of the inner tube 241, which could then burn the copper strip.

[0040] In some optional embodiments, the longitudinal forming assembly 1 includes a first forming wheel set 11, a horn mold 12, and a second forming wheel set 13 arranged sequentially.

[0041] In this embodiment, the first forming wheel set 11 is used to initially wrap the copper strip edge around the outside of the cable core, achieving a semi-forming effect. The horn mold 12 is disposed between the first forming wheel set 11 and the second forming wheel set 13, which can stabilize the cable core and stabilize the formed copper strip. The second forming wheel set 13 is used to further wrap the copper strip edge around the outside of the cable core, forming a fully formed copper strip edge wrapped around the outside of the cable core. This prepares for the subsequent cooperation of the first heating mechanism 2, the first extrusion wheel set 3, and the second heating mechanism 4 to expel the gas inside the copper strip.

[0042] In some optional embodiments, the first molding wheel set 11, the horn mold 12, and the second molding wheel set 13 are all provided with a base 7, and their vertical positions can be adjusted on the base 7.

[0043] In this embodiment, the first forming wheel set 11, the horn mold 12, and the second forming wheel set 13 are all mounted on their respective bases 7, and their vertical positions (i.e., heights) can be adjusted on the bases 7 to accommodate different cable core sizes. Specifically, a vertical elongated hole can be provided on the base 7, and the first forming wheel set 11, the horn mold 12, and the second forming wheel set 13 are all connected to the base 7 via bolts through the vertical elongated hole. When processing cable cores of different diameters, it is only necessary to loosen the bolts and adjust their positions on the vertical elongated hole.

[0044] In addition, both the first forming wheel group 11 and the second forming wheel group 13 are provided in two sets, which allows the copper strip to be better rolled and wrapped around the outside of the cable core.

[0045] In summary, this solution utilizes the cooperation of the first heating mechanism 2, the first extrusion roller group 3, and the second heating mechanism 4. The first heating mechanism 2 heats and forces the air inside the copper strip out of the joint. The first extrusion roller group 3 further extrudes the air from the copper strip, bringing it into contact with the cable core. Then, the second heating mechanism 4 seals the joint of the copper strip, reducing the possibility of external air re-entering. A second extrusion roller group 6 is installed after the second heating mechanism 4. Since the copper strip is still soft after passing through the second heating mechanism 4, the second extrusion roller group 6 further brings the copper strip into contact with the cable core. This achieves the goal of expelling as much air as possible from inside the copper strip after longitudinal wrapping. Furthermore, since both the first extrusion roller group 3 and the second extrusion roller group 6 are equipped with tension adjusters, if the outer diameter of the cable core fluctuates significantly when the copper strip wrapping the cable core passes through the two extrusion rollers, the tension adjusters can provide a certain clamping force to the extrusion rollers, allowing the extrusion rollers to adjust their position automatically. The springs maintain a constant clamping force, resulting in a tighter fit between the copper strip and the inner cable core, reducing internal gaps.

[0046] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A copper strip longitudinal wrapping forming device, characterized in that, include: The longitudinal wrapping forming assembly (1), the first heating mechanism (2), the first extrusion roller group (3) and the second heating mechanism (4) are arranged in sequence. The longitudinal wrapping forming assembly (1) is used to wrap the copper strip around the outside of the cable core. The first heating mechanism (2) is used to heat the air inside the copper strip. The first extrusion roller group (3) is used to attach the copper strip to the cable core and squeeze out the air inside the copper strip. The second heating mechanism (4) is used to seal the joint of the copper strip. The first extrusion roller group (3) includes two horizontally arranged first extrusion rollers (31), each of which is equipped with a first tension adjuster (32). The first tension adjuster (32) is used to adjust the extrusion force of the corresponding first extrusion roller (31) so that the copper strip passing through fits the cable core. A detection mechanism (5) is provided between the longitudinal forming assembly (1) and the first heating mechanism (2). The detection mechanism (5) is used to detect the position of the copper strip seam and, in conjunction with the first tension regulator (32), adjusts the extrusion force of the first extrusion wheel (31) so that the copper strip seam faces upward. The first tension adjuster (32) includes an adjusting member and a spring. One end of the spring abuts against the shaft of the first compression wheel (31), and the adjusting member abuts against the other end of the spring for adjusting the preload of the spring. The second extrusion roller assembly (6) is located after the second heating mechanism (4) and is used to bond the copper strip to the cable core; The first heating mechanism (2) and the second heating mechanism (4) both include an inner tube (241) and a liquid cooling pipe (242) wrapped around the outside of the end of the inner tube (241). The liquid cooling pipe (242) is used to adjust the temperature of the inlet of the inner tube (241).

2. The copper strip longitudinal wrapping forming device as described in claim 1, characterized in that: The first heating mechanism (2) is located below the copper strip, and the second heating mechanism (4) is located above the copper strip.

3. The copper strip longitudinal wrapping forming apparatus as described in claim 1, characterized in that, The second extrusion roller assembly (6) includes two horizontally arranged second extrusion rollers (61), each of which is equipped with a second tension adjuster (62). The second tension adjuster (62) is used to adjust the extrusion force of the two second extrusion rollers (61) so that the copper strip passing through fits the cable core.

4. The copper strip longitudinal wrapping forming device as described in claim 1, characterized in that, The longitudinal forming assembly (1) includes a first forming wheel group (11), a horn mold (12), and a second forming wheel group (13) arranged in sequence.

5. The copper strip longitudinal wrapping forming apparatus as described in claim 4, characterized in that, The first molding wheel set (11), the horn mold (12), and the second molding wheel set (13) are all provided with a base (7), and their vertical positions can be adjusted on the base (7).

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