Cable aluminum-plastic composite tape longitudinal wrapping device
By designing a longitudinal wrapping device for aluminum-plastic composite cable tape, and utilizing sorting, bonding, and holding mechanisms, the problem of tape misalignment was solved, achieving tight bonding and high-quality welding of the composite tape, thus improving the durability and sealing performance of the cable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing technologies, aluminum-plastic composite tape is prone to misalignment during the longitudinal wrapping process, which prevents the tape from adhering tightly to the outside of the cable, affecting the cable's durability and sealing performance.
A longitudinal wrapping device for aluminum-plastic composite cable tape was designed, including a sorting mechanism, a bonding mechanism, a holding mechanism, and a docking mechanism. The device achieves controllable bending and tight bonding of the composite tape through a combination of a servo motor-driven rotating shaft and extrusion rollers, and maintains stable wrapping through a spring and roller structure to ensure the integrity of the composite tape before welding.
This effectively prevents tape misalignment, ensures the composite tape is tightly bonded to the outside of the cable, improves cable product consistency and sealing performance, reduces the incidence of poor bonding at the beginning of the section, and ensures high-quality welding results.
Smart Images
Figure CN121641602A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of cable production, in particular to a longitudinal wrapping device for cable aluminum-plastic composite tape. BACKGROUND
[0002] Longitudinal wrapping is a cable manufacturing process that forms an insulating layer or protective layer on the surface of the cable conductor through longitudinal wrapping, thereby improving the durability and waterproof performance of the cable. Compared with the traditional extrusion wrapping process, the longitudinal wrapping process adopts a material longitudinal extension and overlapping manner instead of spiral winding. This longitudinal wrapping allows the insulating material to better align and tightly fit, thereby improving the overall performance of the cable.
[0003] Cable longitudinal wrapping usually selects metal tape, water-blocking material and welding material to ensure the durability and sealing of the cable, usually selects galvanized steel tape, or uses aluminum-plastic composite tape. The longitudinal wrapping process mainly includes three steps: first, the tape is bent into the required shape by rolling; second, continuous welding is performed using high-frequency induction welding technology; and third, online detection equipment is used.
[0004] In the process of bending the aluminum-plastic composite tape from a flat state to a cylindrical wrapping shape, it needs to go through multiple levels of bending deformation. However, the existing layout of guide rollers and forming dies lacks precise guidance of the deformation path of the tape, which easily leads to deviation of the tape, causing deviation between the tape and the cable, and resulting in the tape being unable to tightly fit on the outside of the cable.
[0005] Therefore, the present application proposes a longitudinal wrapping device for cable aluminum-plastic composite tape to make up for and improve the shortcomings of the prior art. SUMMARY
[0006] In view of the above problems, the present application provides a longitudinal wrapping device for cable aluminum-plastic composite tape, which can effectively solve the problem of deviation between the tape and the cable in the prior art, resulting in the tape being unable to tightly fit on the outside of the cable. In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions: The present application discloses a longitudinal wrapping device for cable aluminum-plastic composite tape, comprising a base, a sorting mechanism for improving the fit of the composite tape on the outside of the cable is arranged on the top of the base, a fitting mechanism for preventing the composite tape from separating from the outside of the cable is further arranged at one end of the sorting mechanism, a holding mechanism for wrapping the composite tape on the outside of the cable is arranged at the other end of the sorting mechanism, and a butt joint mechanism for facilitating welding of the composite tape is arranged outside the holding mechanism. The sorting mechanism comprises a first supporting plate fixedly connected to the upper surface of the base, a first support is fixedly connected to the outside of the first supporting plate, a rotating shaft is symmetrically and rotatably connected to the top of the first support, a pressing wheel for pulling the composite tape to fit on the outside of the cable is fixedly connected to the outside of each rotating shaft, and a conical cover for wrapping the composite tape on the outside of the cable is further fixedly connected to the outside of the first supporting plate.
[0007] Furthermore, the sorting mechanism also includes a drive shaft rotatably connected to the top of the first bracket. Two first bevel gears are symmetrically fixedly connected to the outside of the drive shaft. A second bevel gear is fixedly connected to one end of each of the rotating shafts. The second bevel gear meshes with the first bevel gear. A servo motor is fixedly connected to the side of the first bracket. The output end of the servo motor is fixedly connected to one end of the rotating shaft.
[0008] Furthermore, the rotating shaft and the first roller are arranged along the length of the first tray, which has a semi-circular structure and extends to both ends of the conical cover.
[0009] Furthermore, the bonding mechanism includes a curved plate fixedly connected to one end of the first support plate, and the curved plate is bent toward the base. An arc-shaped plate for bending and deforming the composite strip is slidably connected inside the curved plate, and the end of the arc-shaped plate away from the first support plate is bent upward.
[0010] Furthermore, L-shaped plates are symmetrically fixedly connected to both ends of the curved plate, and a first sliding rod is slidably connected to the horizontal section of the L-shaped plate, with the bottom of the first sliding rod fixedly connected to the top of the curved plate.
[0011] Furthermore, a limiting block is fixedly connected to the top of the first slide rod, and a first spring is also sleeved on the outside of the first slide rod, with the first spring located between the L-shaped plate and the limiting block.
[0012] Furthermore, the bonding mechanism also includes a second support plate fixedly connected to the upper surface of the base, a mounting bracket fixedly connected between the second support plate and the first support plate, a rotating shaft fixedly connected to the side of the mounting bracket, and a first roller for bonding the cable to the surface of the composite tape rotatably connected to the outside of the rotating shaft.
[0013] Furthermore, the retaining mechanism includes a second bracket fixedly connected to the end of the first support plate away from the bending plate, a second slide rod symmetrically slidably connected to the top of the second bracket, a lower pressure plate fixedly connected to the bottom of the second slide rod to prevent the composite tape from detaching from the cable surface, and a second spring sleeved on the outside of the second slide rod, the second spring being located between the second bracket and the lower pressure plate, the lower pressure plate bending upward at the end near the conical cover.
[0014] Furthermore, the docking mechanism includes a guide rod that is vertically and slidably connected to the second bracket. A connecting plate is fixedly connected to the bottom of the guide rod, and a second roller for preventing misalignment at the weld seam of the composite strip is rotatably connected in the groove at the bottom of the connecting plate.
[0015] Furthermore, the docking mechanism also includes a screw threadedly connected to the second bracket, the bottom of the screw being rotatably connected to the top of the connecting plate, and a knob being fixedly connected to the top of the screw.
[0016] The beneficial effects of this invention are as follows: 1. This device, by setting a semi-circular first support plate, a conical cover, and a synchronous extrusion wheel group driven by a servo motor, applies controllable lateral constraints and progressive bending deformation to the composite belt before it enters the wrapping area. The conical cover guides the material to smoothly transition from a planar state to a cylindrical shape, while the symmetrically arranged extrusion wheels rotate synchronously under the transmission of bevel gears, applying pressure evenly to both sides of the belt. This avoids deviation or wrinkling caused by uneven force on one side, laying the foundation for subsequent stable wrapping and reducing the incidence of poor bonding in the initial stage.
[0017] 2. This device is equipped with a bonding mechanism. The arc-shaped plate, compressed by the first spring, and the sliding L-shaped support structure, combined with the reverse pressing of the cable body by the first roller, allow the arc-shaped plate to automatically adjust its position under the action of the first spring to maintain a constant contact pressure when there are slight fluctuations in the outer diameter of the cable or slight differences in the thickness of the composite tape. At the same time, the arc-shaped plate can compress the composite tape, causing it to bend and deform, ensuring that the composite tape continuously and tightly wraps around the outside of the cable, thus improving product consistency and sealing performance.
[0018] 3. This device is equipped with a holding mechanism. The lower pressure plate, compressed by the second spring, applies a continuous downward holding force to the composite strip that has completed the initial coating. The upward-curved design of the front end of the lower pressure plate avoids obstructing the progress of the composite strip and can also press the joint of the composite strip after bending. This effectively counteracts the residual stress and springback tendency generated by the aluminum-plastic composite strip after multiple bending, prevents the coating layer from curling, bulging or partially detaching before welding, maintains the integrity of the cylindrical coating shape of the composite strip, and creates the preconditions for high-quality welding.
[0019] 4. This device is equipped with a docking mechanism. The second roller with adjustable height is lightly pressed on the overlapping area of the composite strip to be welded. Vertical positioning is achieved by using the guide rod and screw knob. The roller not only restricts the lateral misalignment of the strip on both sides of the weld at the moment of welding, but also eliminates the gap by appropriate pressing, ensuring that the high-frequency induction welding energy is concentrated on the joint surface. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0021] Figure 1 This is a three-dimensional structural diagram of the invention from a first perspective.
[0022] Figure 2 This is a three-dimensional structural diagram of the invention from a second perspective.
[0023] Figure 3 In this invention Figure 1 Enlarged view of the structure at point A in the middle.
[0024] Figure 4 This is a three-dimensional structural diagram of the bonding mechanism in this invention.
[0025] Figure 5 In this invention Figure 4 Enlarged view of the structure at point B.
[0026] Figure 6 This is a three-dimensional structural diagram of the retaining mechanism in this invention.
[0027] Figure 7 This is a cross-sectional view of the docking mechanism in this invention.
[0028] The labels in the diagram represent: 10, base; 20, sorting mechanism; 201, first support plate; 202, first bracket; 203, rotating shaft; 204, extrusion wheel; 205, transmission shaft; 206, first bevel gear; 207, second bevel gear; 208, servo motor; 209, conical cover; 30, bonding mechanism; 301, bending plate; 302, arc plate; 303, L-shaped plate; 304, first slide bar; 305, limiting block; 306, first spring; 307, second support plate; 308, mounting bracket; 309, first roller; 310, rotating shaft; 40, holding mechanism; 401, second bracket; 402, second slide bar; 403, lower pressure plate; 404, second spring; 50, docking mechanism; 501, guide rod; 502, connecting plate; 503, screw; 504, knob; 505, second roller. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0030] The present invention will be further described below with reference to embodiments.
[0031] See Figures 1 to 7This embodiment of a cable aluminum-plastic composite tape longitudinal wrapping device includes a base 10. The top of the base 10 is provided with a sorting mechanism 20 for improving the adhesion of the composite tape to the outside of the cable. One end of the sorting mechanism 20 is also provided with a bonding mechanism 30 to prevent the composite tape from detaching from the outside of the cable. The other end of the sorting mechanism 20 is provided with a holding mechanism 40 to wrap the composite tape to the outside of the cable. The outside of the holding mechanism 40 is provided with a butt joint mechanism 50 to facilitate welding of the composite tape.
[0032] See Figure 1 , Figure 2 and Figure 3 The sorting mechanism 20 includes a first tray 201 fixedly connected to the upper surface of the base 10. A first bracket 202 is fixedly connected to the outside of the first tray 201. A rotating shaft 203 is symmetrically rotatably connected to the top of the first bracket 202. Each rotating shaft 203 is symmetrically fixedly connected to an extrusion wheel 204 for pulling the composite tape to adhere to the outside of the cable. A conical cover 209 for wrapping the composite tape around the outside of the cable is also fixedly connected to the outside of the first tray 201.
[0033] The sorting mechanism 20 also includes a drive shaft 205 rotatably connected to the top of the first bracket 202. Two first bevel gears 206 are symmetrically fixedly connected to the outside of the drive shaft 205. A second bevel gear 207 is fixedly connected to one end of each of the rotating shafts 203. The second bevel gear 207 meshes with the first bevel gear 206. A servo motor 208 is fixedly connected to the side of the first bracket 202. The output end of the servo motor 208 is fixedly connected to one end of the rotating shaft 203.
[0034] The rotating shaft 203 and the first roller 309 are arranged along the length of the first support plate 201. The first support plate 201 has a semi-circular structure and extends to both ends of the conical cover 209.
[0035] In actual operation, the aluminum-plastic composite belt is horizontally led out from the belt feeding mechanism and enters the sorting mechanism 20 of the device from the bending plate 301. At this time, the belt is in a straight state and is conveyed forward along the upper surface of the first pallet 201. The first support plate 201 has a semi-circular structure. The inner arc surface of the first support plate 201 matches the outer diameter of the cable to be covered and extends to cover the entrance to the exit end of the conical cover 209, providing basic support and lateral limit for the strip. The servo motor 208 starts and drives the rotating shaft 203 connected to the output end of the servo motor 208 to rotate. The second bevel gear 207 at the end of the rotating shaft 203 meshes with the first bevel gear 206 on the transmission shaft 205, thereby driving the rotating shaft 203 on the other side to rotate synchronously in the opposite direction. The extrusion rollers 204 symmetrically installed on the two rotating shafts 203 rotate synchronously in the opposite direction, clamping the left and right edges of the aluminum-plastic composite strip and providing stable lateral traction force. At the same time, the cable is pulled forward. During the forward movement, the composite strip is forced to fit against the inner wall of the conical cover 209. The cross-section of the conical cover 209 gradually shrinks from large to small, guiding the composite strip to gradually bend from a planar state into a near-cylindrical covering shape, completing the first stage of multi-level bending.
[0036] See Figure 1 , Figure 4 and Figure 5 The bonding mechanism 30 includes a curved plate 301 fixedly connected to one end of the first support plate 201, and the curved plate 301 is bent toward the base 10. The curved plate 301 is slidably connected inside to an arc plate 302 for bending and deforming the composite strip, and the end of the arc plate 302 away from the first support plate 201 is bent upward.
[0037] The curved plate 301 is symmetrically fixedly connected to L-shaped plates 303 at both ends. The horizontal section of the L-shaped plate 303 is slidably connected to a first sliding rod 304. The bottom of the first sliding rod 304 is fixedly connected to the top of the curved plate 301.
[0038] The top of the first slide bar 304 is fixedly connected to a limiting block 305, and a first spring 306 is also sleeved on the outside of the first slide bar 304, and the first spring 306 is located between the L-shaped plate 303 and the limiting block 305.
[0039] The bonding mechanism 30 further includes a second support plate 307 fixedly connected to the upper surface of the base 10. A mounting bracket 308 is fixedly connected between the second support plate 307 and the first support plate 201. A rotating shaft 310 is fixedly connected to the side of the mounting bracket 308. A first roller 309 for bonding the cable to the surface of the composite tape is rotatably connected to the outside of the rotating shaft 310.
[0040] In operation, the cable to be covered passes through the front end of the device, is supported by the second support plate 307, and passes through the mounting frame 308. A rotating shaft 310 is fixed on the mounting frame 308, and a first roller 309 is rotatably connected to the outside of the rotating shaft 310. The first roller 309 presses the cable downward, making the cable tightly adhere to the inner surface of the pre-bent aluminum-plastic composite strip. At the same time, the composite strip enters the bonding mechanism 30: the outer side of the composite strip contacts the arc-shaped plate 302, which is slidably disposed inside the downwardly bent bending plate 301, and the distal end of the arc-shaped plate 302 is tilted upward, applying a directional bending force to the composite strip. The L-shaped plate 303 and the first sliding rod 304 form a guide structure. The first spring 306 is sleeved on the outside of the first sliding rod 304 and located between the L-shaped plate 303 and the limiting block 305, giving the arc-shaped plate 302 elastic floating capability. When there are slight deviations in the outer diameter of the cable or the thickness of the strip, the arc plate 302 automatically adjusts up and down to maintain a constant bonding force, achieving flexible and adaptive tight wrapping throughout the entire process.
[0041] See Figure 1 , Figure 2 , Figure 6 and Figure 7 The retaining mechanism 40 includes a second bracket 401 fixedly connected to the end of the first support plate 201 away from the bending plate 301. A second slide rod 402 is symmetrically slidably connected to the top of the second bracket 401. A lower pressure plate 403 for preventing the composite tape from detaching from the cable surface is fixedly connected to the bottom of the second slide rod 402. A second spring 404 is also sleeved on the outside of the second slide rod 402. The second spring 404 is located between the second bracket 401 and the lower pressure plate 403. The lower pressure plate 403 is bent upward at the end near the conical cover 209.
[0042] In actual operation, the cable and composite tape assembly, after bonding, continues to move forward and enters the holding mechanism 40. The holding mechanism 40 is fixed to the end of the first support plate 201 by the second bracket 401. The top of the second bracket 401 is slidably connected to the second slide rod 402. The lower end of the second slide rod 402 is fixed to the lower pressure plate 403. The second slide rod 402 is sleeved with the second spring 404. Under the pressure of the second spring 404, the lower pressure plate 403 continuously and lightly presses the top of the covered section, especially applying holding force to the overlap area. The end of the lower pressure plate 403 near the conical cover 209 is designed to be bent upwards, which not only avoids scratching the composite tape or hindering its progress, but also accurately presses the closed edge, effectively counteracting the elastic rebound of the aluminum-plastic composite tape caused by multiple bends, and preventing edge curling, bulging or partial detachment before welding.
[0043] See Figure 1 , Figure 2 , Figure 6 and Figure 7 Figure 1 Figure 2 Figure 6 Figure 7The docking mechanism 50 includes a guide rod 501 that is vertically slidably connected to the second bracket 401. A connecting plate 502 is fixedly connected to the bottom of the guide rod 501. A second roller 505 for preventing misalignment at the weld seam of the composite strip is rotatably connected in the groove at the bottom of the connecting plate 502.
[0044] The docking mechanism 50 also includes a screw 503 threadedly connected to the second bracket 401. The bottom of the screw 503 is rotatably connected to the top of the connecting plate 502. A knob 504 is fixedly connected to the top of the screw 503. A high-frequency induction welding device for welding the overlap of the composite strip is provided on the side of the docking mechanism 50. The high-frequency induction welding device is a common and mature product on the market and will not be described in detail here.
[0045] In practice, before the edges of the composite strip reach the welding station, the overlapping area of the composite strip passes through the butt joint mechanism 50. The operator adjusts the vertical position of the screw 503 by rotating the knob 504. The bottom of the screw 503 is rotatably connected to the connecting plate 502, pushing the connecting plate 502 to slide up and down along the guide rod 501. A freely rotatable second roller 505 is installed in the groove at the bottom of the connecting plate 502. The second roller 505 finally presses lightly on the weld seam. During high-frequency induction welding, the second roller 505 restricts the lateral displacement of the strip on both sides, eliminates misalignment caused by vibration, tension fluctuations, or material creep, and closes the micro gap by moderately pressing, ensuring concentrated welding energy, uniform fusion, and forming a highly sealed continuous weld seam.
[0046] Working principle: The aluminum-plastic composite tape is horizontally led out from the tape feeding mechanism and enters the sorting mechanism 20 of the device through the bending plate 301. The cable is pulled forward, and during the forward movement, the composite tape is forced to adhere to the inner wall of the conical cover 209. The cross-section of the conical cover 209 gradually decreases from large to small, guiding the composite tape to gradually bend from a planar state into a near-cylindrical covering shape. The cable to be covered passes through the front end of the device, is supported by the second support plate 307, and passes through the mounting frame 308. A rotating shaft 310 is fixed on the mounting frame 308, and the external rotating connection of the rotating shaft 310 is... A first roller 309 is attached, which presses the cable downward to make the cable fit tightly against the inner surface of the pre-bent aluminum-plastic composite strip. After the cable and composite strip assembly is bonded, it continues to move forward and enters the holding mechanism 40. The lower pressure plate 403 continuously and lightly presses the top of the covered section under the pressure of the second spring 404. Before the two sides of the composite strip reach the welding station, their overlapping area passes through the butt joint mechanism 50. The second roller 505 restricts the lateral displacement of the strip on both sides to eliminate misalignment caused by vibration, tension fluctuation or material creep.
[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A longitudinal wrapping device for cable aluminum plastic composite tape, characterized in that, The utility model relates to a cable composite tape wrapping device, including base (10), the top of base (10) is provided with the arrangement mechanism (20) for improving composite tape to be pasted on the outside of cable, the arrangement mechanism (20) one end is also provided with the pasting mechanism (30) of avoiding composite tape to be separated from the outside of cable, the arrangement mechanism (20) other end is provided with the retaining mechanism (40) of making composite tape to be wrapped in the outside of cable, the retaining mechanism (40) outside is provided with the butt joint mechanism (50) of facilitating the welding of composite tape, The arrangement mechanism (20) includes a first supporting plate (201) fixedly connected to the upper surface of the base (10), a first support (202) fixedly connected to the outside of the first supporting plate (201), a rotating shaft (203) symmetrically and rotatably connected to the top of the first support (202), an extrusion wheel (204) fixedly connected to the outside of each rotating shaft (203) for pulling the composite tape to be pasted on the outside of the cable, and a conical cover (209) fixedly connected to the outside of the first supporting plate (201) for wrapping the composite tape on the outside of the cable.
2. The longitudinal lamination device for cable aluminum plastic composite tape according to claim 1, characterized in that, The arrangement mechanism (20) further includes a transmission shaft (205) rotatably connected to the top of the first support (202), two first bevel gears (206) fixedly connected to the outside of the transmission shaft (205), a second bevel gear (207) fixedly connected to one end of each rotating shaft (203), the second bevel gear (207) engaged with the first bevel gear (206), and a servo motor (208) fixedly connected to the side of the first support (202), the output end of the servo motor (208) fixedly connected to one end of the rotating shaft (203).
3. The device according to claim 2, wherein the device is characterized by: The rotating shaft (203) and the first roller (309) are arranged along the length direction of the first supporting plate (201), the first supporting plate (201) has a semicircular structure, and the first supporting plate (201) extends to both ends of the conical cover (209).
4. The device according to claim 1, wherein the device is characterized by: The pasting mechanism (30) includes a curved plate (301) fixedly connected to one end of the first supporting plate (201), the curved plate (301) is curved towards the base (10), an arc-shaped plate (302) slidably connected to the inside of the curved plate (301) for bending and deforming the composite tape, and one end of the arc-shaped plate (302) away from the first supporting plate (201) is curved upwards.
5. The device according to claim 4, wherein the device is characterized by: Both ends of the curved plate (301) are symmetrically fixedly connected with L-shaped plates (303), the horizontal sections of the L-shaped plates (303) are slidably connected with first sliding rods (304), and the bottoms of the first sliding rods (304) are fixedly connected with the top of the curved plate (301).
6. The device according to claim 5, wherein the device is characterized by: The top of the first sliding rod (304) is fixedly connected with a limiting block (305), and the first sliding rod (304) is further sleeved with a first spring (306) outside, and the first spring (306) is located between the L-shaped plate (303) and the limiting block (305).
7. The device according to claim 4, wherein the device is characterized by: The fitting mechanism (30) further comprises a second supporting plate (307) fixedly connected to the upper surface of the base (10), a mounting frame (308) fixedly connected between the second supporting plate (307) and the first supporting plate (201), a rotating shaft (310) fixedly connected to the side surface of the mounting frame (308), and a first roller (309) rotatably connected to the outer portion of the rotating shaft (310) and used for fitting the cable to the surface of the composite tape.
8. The device according to claim 1, wherein the device is characterized by: The retaining mechanism (40) comprises a second support (401) fixedly connected to the end of the first supporting plate (201) away from the bending plate (301), a second sliding rod (402) symmetrically and slidably connected to the top of the second support (401), a pressing plate (403) fixedly connected to the bottom of the second sliding rod (402) and used for preventing the composite tape from being separated from the surface of the cable, a second spring (404) sleeved to the outer portion of the second sliding rod (402) and located between the second support (401) and the pressing plate (403), and the end of the pressing plate (403) close to the conical cover (209) being bent upward.
9. The device according to claim 1, wherein the device is characterized by: The docking mechanism (50) comprises a guide rod (501) vertically and slidably connected to the second support (401), and a connecting plate (502) fixedly connected to the bottom of the guide rod (501), and a second roller (505) rotatably connected to the groove in the bottom of the connecting plate (502) and used for preventing the composite tape from being misaligned at the weld.
10. The device according to claim 9, wherein the device is characterized by: The docking mechanism (50) further comprises a screw rod (503) threadedly connected to the second support (401), the bottom of the screw rod (503) being rotatably connected to the top of the connecting plate (502), and a knob (504) fixedly connected to the top of the screw rod (503).