Design method of longitudinal wrapping mold, longitudinal wrapping mold and cable core longitudinal wrapping method

Abstract

The invention relates to a design method of a longitudinal wrapping mold, the longitudinal wrapping mold and a cable core longitudinal wrapping method, and the method comprises the following steps: the two ends of the longitudinal wrapping mold are respectively provided with a cable inlet and a cable outlet, and the diameter of the longitudinal wrapping mold is gradually reduced from the cable inlet to the cable outlet; flattening the aluminum-plastic tape by using a first guide roller before the aluminum-plastic tape enters the cable inlet, so that the aluminum-plastic tape is tightly attached to the inner wall of the longitudinal wrapping mold; the optimal distance L from the first guide roller to the cable outlet is calculated according to the formula tan (A / 2) = (B-D / ) L, the distance from the first guide roller to the cable outlet is adjusted to be L, A is the forming angle of the longitudinal wrapping mold, B is the width of the aluminum plastic belt, and D is the diameter of the cable outlet; the optimal diameter W of the cable inlet is calculated according to the distance L and the formula W = (B-D) * L1 / L + D, a longitudinal wrapping mold with the cable outlet diameter being W is obtained, and L1 is the length of the longitudinal wrapping mold; on the premise that the optimal forming angle A and the length of the longitudinal wrapping die are not changed, longitudinal wrapping of various large-section cables can be achieved, the die cost is effectively reduced, and the production space is saved.

Description

Technical Field

[0001] The invention relates to the technical field of cable forming, and in particular to a design method of a longitudinal wrapping mold, a longitudinal wrapping mold and a cable core longitudinal wrapping method. Background Art

[0002] With the continuous development of the cable industry, ultra-high voltage large-section cables have been widely used in power systems, and composite sheath cables have gradually shifted from low-voltage small-section structures to high-voltage large-section structures. The characteristics of large-section cables are heavy weight, hardness, and diameter. At present, the overseas market has an increasing demand for large-section composite sheath structure cables. One of the processes in the production of composite sheath structure cables is to wrap the aluminum-plastic composite tape on the outside of the cable core through a longitudinal wrapping mold, and the aluminum-plastic composite tape is required to be round and flat without wrinkles after forming. In this process, the longitudinal wrapping mold plays a key role. The existing traditional longitudinal wrapping molds for low-voltage small-section cables are becoming less and less applicable. In the actual production of large-section cables, various disadvantages are gradually emerging.

[0003] Traditional longitudinal package mold as reference Figure 1 As shown, it can be regarded as an open cone formed by turning the two sides of the thick plane inward. The two ends of the open cone are the cable inlet and the cable outlet. Figure 2 The cable inlet shown is flatter than the cable outlet, and can gradually roll the aluminum-plastic tape of a certain thickness and width from a plane shape along the inside of the longitudinal wrapping mold into a ring shape to wrap around the outside of the cable core. As the outer diameter and weight of the cable increase, the width of the aluminum tape also gradually increases. Since the aluminum-plastic tape forming is a gradual forming process, in order to ensure that the aluminum-plastic tape is well formed, the cone forming angle (taper) a cannot be too large. A too large angle a means that the aluminum-plastic tape forming distance is shortened, the pressure of the cable's own weight increases, and it is easy to deform and form poorly, which eventually leads to wrinkles in the aluminum-plastic tape after wrapping the cable core, resulting in product quality defects. Therefore, in order to ensure that the angle a is not too large, the overall length l of the longitudinal wrapping mold can only be made longer and longer when producing large-section cables, which leads to increased mold costs and waste of production space, which is not conducive to large-scale production. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that when producing large-section cables, while ensuring the optimal forming angle A of the longitudinal wrapping mold, the overall length of the longitudinal wrapping mold becomes longer and longer, resulting in increased longitudinal wrapping mold cost and waste of production space. Further, a longitudinal wrapping mold design method, a longitudinal wrapping mold and a cable core longitudinal wrapping method are provided. Under the premise of ensuring that the optimal forming angle A and the length of the longitudinal wrapping mold remain unchanged, longitudinal wrapping of a variety of large-section cables can be achieved, effectively reducing the mold cost and saving production space.

[0005] In order to solve the above technical problems, the present invention provides a design method of a longitudinal wrapping mold, comprising the following steps: The two ends of the longitudinal wrapping mold are respectively arranged with a cable inlet and a cable outlet, and the diameter of the longitudinal wrapping mold gradually decreases from the cable inlet to the cable outlet; Using a first guide roller to flatten the aluminum-plastic strip before it enters the cable inlet, so that it is closely attached to the inner wall of the longitudinal wrapping mold; The optimal distance L from the first guide roller to the cable outlet is calculated according to the formula tan(A / 2)=(BD / )L, and the distance from the first guide roller to the cable outlet is adjusted to L, where A is the forming angle of the longitudinal wrapping mold, B is the width of the aluminum-plastic strip, and D is the diameter of the cable outlet; The optimal diameter W of the cable inlet is calculated according to the distance L and the formula W=(BD)*L1 / L+D, and a longitudinal wrapping mold with a cable outlet diameter of W is obtained, wherein L1 is the length of the longitudinal wrapping mold.

[0006] In one embodiment of the present invention, the forming angle A ranges from 20° to 30°.

[0007] In order to solve the above problems, a longitudinal wrapping mold is also provided, which is made by adopting any one of the design methods of the longitudinal wrapping mold, wherein the bottom of the cable entry port is set to be a semicircle, and the two sides of the cable entry port are straight edges parallel to each other, wherein the two ends of the semicircle extend along the tangent direction thereof to form the straight edges.

[0008] In one embodiment of the present invention, the cable outlet is arranged in a circular shape, and the cable outlet is arranged concentrically with the cable inlet.

[0009] In one embodiment of the present invention, the diameter of the semicircle is greater than or equal to the diameter of the circle.

[0010] In one embodiment of the present invention, the diameter D=D1*2H, where D1 is the diameter of the cable core, and H is the thickness of the aluminum-plastic tape.

[0011] In order to solve the above problems, a cable core longitudinal wrapping method is also provided, which wraps the aluminum-plastic tape around the cable core through any one of the longitudinal wrapping molds, and further includes the following steps: A guide roller assembly and the longitudinal wrapping mold are sequentially arranged along the transmission direction of the aluminum-plastic tape, wherein the guide roller assembly comprises a first guide roller and a second guide roller, the first guide roller is used to flatten the aluminum-plastic tape before the aluminum-plastic tape enters the cable inlet, so that the aluminum-plastic tape is flat against the inner wall of the longitudinal wrapping mold, and the second guide roller is used to support the cable core before the cable core enters the cable inlet, so that the cable core does not contact the aluminum-plastic tape before entering the cable inlet; Insert the aluminum-plastic tape and one end of the cable core into the longitudinal wrapping mold from the cable inlet with a diameter of W, and pass through the longitudinal wrapping mold from the cable outlet, with the aluminum-plastic tape tightly attached to the inner wall of the longitudinal wrapping mold, and the cable core is located on the aluminum-plastic tape; The aluminum-plastic tape and the cable core are uniformly pulled along the direction from the cable inlet to the cable outlet, and the aluminum-plastic tape is gradually wrapped around the outside of the cable core from a flat state, and finally a finished cable with a diameter of D is obtained.

[0012] In one embodiment of the present invention, the guide roller assembly includes a third guide roller, and the third guide roller is located between the longitudinal wrapping mold and the second guide roller, and also includes the following steps: using the third guide roller to press down the cable core so that the cable core enters the cable inlet and adheres to the aluminum-plastic belt.

[0013] In one embodiment of the present invention, it further comprises a tape pay-off frame and a wire pay-off frame, the cable core is paid out from the wire pay-off frame, and the aluminum-plastic tape is paid out from the tape pay-off frame.

[0014] In one embodiment of the present invention, it further comprises a belt traction machine, wherein the belt traction machine is located between the second guide roller and the pay-off frame, and further comprises the following step: utilizing the belt traction machine to pull the cable core.

[0015] In one embodiment of the present invention, the straight shapes on both sides of the cable inlet are respectively inclined toward the outside of the longitudinal wrapping mold.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art: The design method of the longitudinal wrapping mold described in the present invention ensures that when the longitudinal wrapping mold is at the optimal forming angle A, the optimal width W of the cable inlet of the longitudinal wrapping mold can be determined by changing the distance L between the first guide roller and the cable outlet, thereby ensuring that no matter what length of the longitudinal wrapping mold is, it can meet the trend of the aluminum-plastic belt gradually forming from a plane to a circular ring without wrinkles. It can not only meet the longitudinal wrapping of cables with various cross-sections, but also can flexibly select longitudinal wrapping molds of various lengths, effectively reducing mold costs and saving production space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic structural diagram of a top view of a conventional longitudinal wrapping mold according to the present invention; Figure 2 for Figure 1 The structural schematic diagram of the side view of the traditional longitudinal packaging mold shown; Figure 3 It is a schematic structural diagram of a novel aluminum-plastic longitudinal packaging mold along its axial direction in one embodiment of the present invention; Figure 4 It is a schematic structural diagram of the novel aluminum-plastic longitudinal packaging mold along its axial direction in another embodiment of the present invention; Figure 5 is a cross-sectional view of the cable core and the cable inlet in one embodiment of the present invention; Figure 6 This is a working principle diagram of the novel aluminum-plastic longitudinal packaging mold of the present invention; Figure 7 for Figure 1 The structural schematic diagram of the side view of the new aluminum-plastic longitudinal packaging mold shown; Figure 8 A flow chart of the design method of the present invention; Explanation of the markings in the specification: 1. New longitudinal wrapping mold; 2. Support; 3. Third guide roller; 4. Aluminum-plastic tape; 5. Cable core; 6. Tape pay-off rack; 7. First guide roller; 8. Second guide roller; 9. Belt traction machine; 10. Pay-off rack; 11. Cable inlet of traditional longitudinal wrapping mold; 12. Semicircular; 13. Straight edge; 14. Cable outlet of traditional longitudinal wrapping mold; 15. Cable inlet of new aluminum-plastic longitudinal wrapping mold; 16. Cable outlet of new aluminum-plastic longitudinal wrapping mold; a. Molding angle of traditional longitudinal wrapping mold; L1. Length of new longitudinal wrapping mold; W. Width of cable inlet; l. Length of traditional longitudinal wrapping mold; L. Distance from first guide roller to cable outlet. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Example

[0020] Reference Figure 7 and 8 As shown, in one embodiment of the present invention, a design method for a longitudinal wrapping mold is provided, which is used to improve the width of the cable entry opening of the longitudinal wrapping mold 1. When the molding angle and length of the longitudinal wrapping mold 1 are determined, the optimal cable entry opening width corresponding to the longitudinal wrapping mold 1 is obtained to ensure that the aluminum-plastic tape 4 does not produce wrinkles and other quality defects when the longitudinal wrapping mold 1 wraps the cable core 5. The method comprises the following steps: The two ends of the longitudinal wrapping mold 1 are respectively set as a cable inlet 15 and a cable outlet 16, and the diameter of the longitudinal wrapping mold 1 gradually decreases from the cable inlet 15 to the cable outlet 16. In a certain product, the diameter of the cable outlet 16 is determined according to the diameter of the cable core 5, and the molding angle of the longitudinal wrapping mold 1 is also determined; The first guide roller 1 is used to flatten the aluminum-plastic tape 4 before the aluminum-plastic tape 4 enters the cable inlet 15, so that it is closely attached to the inner wall of the longitudinal wrapping mold 1, thereby preventing the aluminum-plastic tape 5 from wrinkling, bending and other undesirable phenomena; The optimal distance L from the first guide roller 15 to the cable outlet 16 is calculated according to the formula tan(A / 2)=(BD / )L, and the distance from the first guide roller 7 to the cable outlet 16 is adjusted to L, where A is the molding angle of the longitudinal wrapping mold 1, B is the width of the aluminum-plastic strip 4, and D is the diameter of the cable outlet 16; According to the distance L and the formula W=(BD)*L1 / L+D, the optimal diameter W of the cable inlet 15 is calculated, and the longitudinal wrapping mold 1 with the cable outlet diameter W is obtained. The diameter W can meet the trend of the aluminum-plastic strip 4 gradually forming from a plane to a ring, and is completely suitable for the aluminum-plastic strip 4 to be able to fit the surface of the new longitudinal wrapping mold 1 to be gradually formed, which is more stable and reliable. L1 is the length of the longitudinal wrapping mold 1. It can be understood that when B, D, and L1 are determined, the size of L can be adjusted to ensure that the forming angle A is always within a reasonable range; or, when B, D, and W are determined, the size of L can be adjusted to achieve flexible self-selection of L1; Reference Figure 1 As shown, the value range of the forming angle A is 20° to 30°. Example

[0021] Reference Figure 3 , 4As shown in Figure 5, in one embodiment of the present invention, a novel aluminum-plastic longitudinal wrapping mold 1 is also disclosed, which is made by adopting any one of the design methods of the longitudinal wrapping mold, and is used to wrap the aluminum-plastic tape 4 around the cable core 5. The longitudinal wrapping mold 1 is supported by a support 2; it can be understood that the longitudinal wrapping mold 1 is a trumpet shape formed by winding the opposite sides of a thin sheet inwardly, and the thin sheet is preferably a square metal sheet or a plastic sheet. The end with the largest diameter of the trumpet shape is set as a cable entrance 15 and the other end is set as a cable outlet 16. During longitudinal wrapping, the aluminum-plastic tape 4 and the cable core 5 enter the interior of the longitudinal wrapping mold 1 from the cable entrance 15 and leave from the cable outlet 16. The cable entrance 15 is set as a "U" shape, which can be understood as " The bottom of the U-shape is set to a semicircle 12 with a diameter of W, and the semicircle 12 matches the shape of the cable core 5. The circumference of the "U" shape is equal to the width B of the aluminum-plastic tape. The two sides of the cable inlet 15 are set to straight edges 13 parallel to each other. Under the limitation of the straight edges 13, after entering the longitudinal wrapping mold 1, the cable can use its own weight to press the aluminum-plastic tape 4 downward, and more stably fit the inner wall of the longitudinal wrapping mold 1, ensuring that the aluminum-plastic tape 4 is gradually formed along with the longitudinal wrapping mold 1; in other embodiments, the straight shapes 13 on both sides of the "U" shape can also be set to be slightly inclined toward the outside of the longitudinal wrapping mold 1, which is conducive to the cable core 5 entering the cable inlet 15. At this time, the width between the straight edges on both sides of the cable inlet 15 is greater than the diameter W of the semicircle; Reference Figure 3 As shown, further, the cable outlet 16 is set to an ideal circle or a near circle, the diameter of the cable outlet 16 is larger than the diameter of the cable core 5, and the semicircle 12 is concentrically arranged with the circle, which is conducive to the gradual forming of the aluminum-plastic strip 4 from a plane shape to a circular ring shape.

[0022] Reference Figure 3 As shown, the diameter W of the semicircle 12 is greater than the diameter D of the circle. When the length L1 of the mold body is fixed, it is beneficial to extend the forming distance of the aluminum-plastic strip 4 and reduce the deformation of the aluminum-plastic strip 4. In other embodiments, the diameter W of the semicircle 12 can be equal to the diameter W of the circle.

[0023] Reference Figure 4 As shown, in other embodiments, the cable inlet 15 may also be configured as the semicircular shape 12, that is, two straight sides parallel to each other are not configured.

[0024] Furthermore, the diameter D=D1*2H, where D1 is the diameter of the cable core 5, and H is the thickness of the aluminum-plastic tape 4. The aluminum-plastic tape 4 is wound around the cable core 5 through the longitudinal wrapping mold 1 to obtain a finished cable with a diameter of D. Example

[0025] Reference Figure 4As shown, in order to solve the above problems, a cable core longitudinal wrapping method is also provided, which wraps the aluminum-plastic tape 4 outside the cable core 5 through any one of the longitudinal wrapping molds 1, and also includes the following steps: A guide roller assembly and the longitudinal wrapping mold 1 are sequentially arranged along the transmission direction of the aluminum-plastic tape 4, wherein the guide roller assembly includes a first guide roller 7 and a second guide roller 8, the first guide roller 7 is used to flatten the aluminum-plastic tape 4 before the aluminum-plastic tape 4 enters the cable entry port 15, so that the aluminum-plastic tape 4 is flat against the inner wall of the longitudinal wrapping mold 1, and the second guide roller 8 is used to support the cable core 5 before the cable core 5 enters the cable entry port 15, so that the cable core 5 does not contact the aluminum-plastic tape 4 before entering the cable entry port 15, in order to ensure that the two do not interfere with and affect each other before entering the longitudinal wrapping mold 1, avoid the influence of the deadweight of the cable core 5 on the forming of the aluminum-plastic tape 4, and ensure the gradual forming process of the aluminum-plastic tape 4 from a plane shape to a circular ring shape; Insert the aluminum-plastic tape 4 and one end of the cable core 5 into the longitudinal wrapping mold 1 from the cable inlet 15 with a diameter of W, and pass through the longitudinal wrapping mold 1 from the cable outlet 16, with the aluminum-plastic tape 4 close to the inner wall of the longitudinal wrapping mold 1, and the cable core 5 is located on the aluminum-plastic tape 4; The aluminum-plastic tape 4 and the free ends of the cable core 5 are uniformly pulled by a tension machine along the direction from the cable inlet 15 to the cable outlet 16. When passing through the longitudinal wrapping mold 1, the aluminum-plastic tape 4 is gradually rolled into a circular ring from a flat state and wrapped around the outside of the cable core 5, and finally a finished cable with a diameter of D is obtained.

[0026] Reference Figure 4 As shown, the guide roller assembly includes a third guide roller 3, and the third guide roller 3 is located between the longitudinal wrapping mold 1 and the second guide roller 8, and also includes the following steps: using the third guide roller 3 to press down the cable core 5 so that the cable core 5 enters the cable inlet 15 and then adheres to the aluminum-plastic tape 4.

[0027] Reference Figure 4 As shown, it also includes a tape pay-off frame 6 and a wire pay-off frame 10 , the cable core 5 is paid out from the wire pay-off frame 10 , and the aluminum-plastic tape 4 is paid out from the tape pay-off frame 6 .

[0028] Reference Figure 4 As shown, in order to drive the cable core 5 to move forward stably and reduce the shaking of the cable core 5, a belt traction machine 9 is also included, and the belt traction machine 9 is located between the second guide roller 8 and the pay-off frame 10. The following steps are also included: after the cable core 5 is released from the pay-off frame 10, the cable core 5 is pulled by the belt traction machine 9.

[0029] Furthermore, the position of the tape unwinding frame 6 is adjustable, and the tape unwinding tension is controlled by electromagnetic tension.

[0030] Furthermore, the width of the aluminum-plastic strip 4 is generally approximately equal to B=π*D+(10-20)mm.

[0031] The design method of the longitudinal wrapping mold and the working principle of the cable core longitudinal wrapping method of the present invention are: First, determine the optimal forming angle A of the longitudinal wrapping mold 1 and the length L1 of the longitudinal wrapping mold, then determine the distance L between the first guide roller 7 and the cable entry port 15 under the condition that the longitudinal wrapping mold 1 can meet the trend of the aluminum-plastic strip 4 gradually forming from a plane shape to a circular ring shape, and then use L to calculate the optimal width W of the cable entry port 15 of the longitudinal wrapping mold 1, thereby determining the width W of the cable entry port 15 of the longitudinal wrapping mold; use the first guide roller 7 and the second guide roller 8 to support the aluminum-plastic strip 4 and the cable core 5 respectively, and finally adjust the distance between the first guide roller 7 and the cable entry port 15 The diameter of the cable core 5 is L, so that the two do not contact each other before entering the longitudinal wrapping mold 1, and then the third guide roller 3 is used to press the cable core 5 down, so that the cable core 5 can press the aluminum-plastic tape 4 close to the inner wall of the longitudinal wrapping mold after entering the cable inlet 15, and one end of the aluminum-plastic tape 4 and the cable core 5 is inserted into the longitudinal wrapping mold 1 from the cable inlet 15, and passes through the longitudinal wrapping mold 1 from the cable outlet 16, and the aluminum-plastic tape 4 and the cable core 5 are pulled at a uniform speed from the cable inlet 15 to the cable outlet 16. The aluminum-plastic tape 4 and the cable core 5 are gradually wrapped on the outside of the cable core 5 from a flat state, and finally a finished cable with a diameter of D is obtained.

[0032] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A method for designing a longitudinal packaging mold, characterized in that: The steps include: The two ends of the longitudinal wrapping mold are respectively arranged with a cable inlet and a cable outlet, and the diameter of the longitudinal wrapping mold gradually decreases from the cable inlet to the cable outlet; Using a first guide roller to flatten the aluminum-plastic strip before it enters the cable inlet, so that it is closely attached to the inner wall of the longitudinal wrapping mold; The optimal distance L from the first guide roller to the cable outlet is calculated according to the formula tan(A / 2)=(BD / )L, and the distance from the first guide roller to the cable outlet is adjusted to L, where A is the forming angle of the longitudinal wrapping mold, B is the width of the aluminum-plastic strip, and D is the diameter of the cable outlet; The optimal diameter W of the cable inlet is calculated according to the distance L and the formula W=(BD)*L1 / L+D, and a longitudinal wrapping mold with a cable outlet diameter of W is obtained, wherein L1 is the length of the longitudinal wrapping mold.

2. A method for designing a longitudinal wrapping mold according to claim 1, characterized in that: The value range of the forming angle A is 20° to 30°.

3. A longitudinal packaging mold, characterized in that: The cable inlet is manufactured by adopting the design method of the longitudinal wrapping mold according to any one of claims 1 to 2, wherein the bottom of the cable inlet is set to be semicircular, and the two sides of the cable inlet are straight edges parallel to each other, wherein the two ends of the semicircle extend along the tangent direction thereof to form the straight edges.

4. A longitudinal wrapping mold according to claim 3, characterized in that: The cable outlet is arranged in a circular shape, and the cable outlet is arranged concentrically with the cable inlet.

5. A method for designing a longitudinal wrapping mold according to claim 4, characterized in that: The diameter of the semicircle is greater than or equal to the diameter of the circle.

6. A longitudinal wrapping mold according to claim 3, characterized in that: The diameter D=D1*2H, where D1 is the diameter of the cable core and H is the thickness of the aluminum-plastic tape.

7. A method for longitudinally wrapping a cable core, comprising wrapping the aluminum-plastic tape around the cable core using the longitudinal wrapping mold according to any one of claims 3 to 6, wherein: The following steps are also included: A guide roller assembly and the longitudinal wrapping mold are sequentially arranged along the transmission direction of the aluminum-plastic tape, wherein the guide roller assembly comprises a first guide roller and a second guide roller, the first guide roller is used to flatten the aluminum-plastic tape before the aluminum-plastic tape enters the cable inlet, so that the aluminum-plastic tape is flat against the inner wall of the longitudinal wrapping mold, and the second guide roller is used to support the cable core before the cable core enters the cable inlet, so that the cable core does not contact the aluminum-plastic tape before entering the cable inlet; Insert the aluminum-plastic tape and one end of the cable core into the longitudinal wrapping mold from the cable inlet with a diameter of W, and pass through the longitudinal wrapping mold from the cable outlet, with the aluminum-plastic tape tightly attached to the inner wall of the longitudinal wrapping mold, and the cable core is located on the aluminum-plastic tape; The aluminum-plastic tape and the cable core are uniformly pulled along the direction from the cable inlet to the cable outlet, and the aluminum-plastic tape is gradually wrapped around the outside of the cable core from a flat state, and finally a finished cable with a diameter of D is obtained.

8. A cable core longitudinal wrapping method according to claim 7, characterized in that: The guide roller assembly includes a third guide roller, and the third guide roller is located between the longitudinal wrapping mold and the second guide roller, and also includes the following steps: using the third guide roller to press down the cable core so that the cable core enters the cable inlet and adheres to the aluminum-plastic tape.

9. A cable core longitudinal wrapping method according to claim 7, characterized in that: It also comprises a tape pay-off frame and a wire pay-off frame, the cable core is paid out from the wire pay-off frame, and the aluminum-plastic tape is paid out from the tape pay-off frame.

10. A cable core longitudinal wrapping method according to claim 9, characterized in that: It also includes a belt traction machine, the belt traction machine is located between the second guide roller and the pay-off frame, and also includes the following steps: using the belt traction machine to pull the cable core.

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