Non-woven fabric wrapping device for shielding grounding cable production

Abstract

The invention discloses a non-woven fabric wrapping device for shielding grounding cable production, and belongs to the technical field of shielding grounding cable production. The device comprises a supporting machine shell, an inner carrying cylinder is fixedly arranged on the inner side of the supporting machine shell, the inner carrying cylinder transversely penetrates through the upper portion of the supporting machine shell and is used for providing a channel for a grounding cable, an outer connecting cylinder is rotationally arranged at the front end of the inner carrying cylinder, and a driving mechanism used for driving the outer connecting cylinder to rotate at the front end of the inner carrying cylinder is arranged on the supporting machine shell. A wrapping supporting frame is fixedly arranged on the front side of the external connection cylinder, and an adjustable support is fixedly arranged on one side of the wrapping supporting frame. When the device is used, the loading frame is obliquely arranged in the direction of the limiting roller, and a non-woven fabric strip in the belt disc obliquely bypasses the limiting roller and then can obliquely approach the surface of a grounding cable under the guiding action of the limiting roller. In the process, the two sides of the non-woven fabric strip are uniformly stressed, the tightness difference of the two sides caused by dragging tension is effectively avoided, and the production quality of the shielding grounding cable is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of shielded grounding cable production, and particularly to a non-woven fabric wrapping device for shielded grounding cable production. Background Technology

[0002] Shielded grounding cables are transmission lines that use a metal mesh braided layer to wrap the signal wires and ground the shielding layer through a low-impedance path. Their core function is to suppress external electromagnetic interference, prevent internal signal leakage, and ensure signal transmission stability. They are widely used in data communication, industrial control, and other fields.

[0003] The manufacturing process of shielded grounding cables requires selecting a suitable conductor and ensuring its performance meets standards through processes such as wire drawing and annealing. Next, insulation is extruded to encase the conductor in insulating material. Then, effective electromagnetic shielding is formed using metal braiding or wrapping. Following this, non-woven fabric is evenly wrapped around the shielding layer using a wrapping device for protection and fixation. Finally, the shielding layer is connected to the grounding conductor to achieve the grounding function.

[0004] The shortcomings of the existing technical solutions are as follows: In the actual production of non-woven fabric-wrapped cables, the non-woven fabric tape is generally pulled at an angle, and the dragging tension will cause uneven tension on both sides of the tape, resulting in excessive tension on one side. For cables with a diameter of 2.5cm or more, the tape can fit well during wrapping due to the relatively small curvature, allowing for normal wrapping. However, for cables with a diameter of less than 2.5cm, the curvature is large, and the loose side cannot be straightened. During the wrapping process, it will accumulate like a twisted rope, forming spiral wrinkles along the cable direction. These wrinkles increase the thickness at the wrinkled areas, leading to uneven cable outer diameter and affecting cable quality. Summary of the Invention

[0005] This invention provides a non-woven fabric wrapping device for the production of shielded grounding cables, which can solve the problem in the prior art where the non-woven fabric tape is generally in a "slanted pulling" state, and the dragging tension will cause uneven tension on both sides of the tape, resulting in uneven cable outer diameter.

[0006] A nonwoven fabric wrapping device for producing shielded grounding cables includes a supporting housing. An inner carrier cylinder is fixedly installed inside the supporting housing and extends laterally through the top of the supporting housing to provide a channel for the grounding cable. An outer connecting cylinder is rotatably installed at the front end of the inner carrier cylinder. A drive mechanism is provided on the supporting housing to drive the outer connecting cylinder to rotate at the front end of the inner carrier cylinder. A wrapping support frame is fixedly installed at the front side of the outer connecting cylinder. An adjustable bracket is fixedly installed on one side of the wrapping support frame. A limit roller is rotatably installed on the adjustable bracket, and the height of the limit roller can be adjusted. A loading frame is also fixedly installed on the wrapping support frame. The loading frame is inclined towards the limit roller. A reel is rotatably installed inside the loading frame. The nonwoven fabric strip output from the reel can be wrapped around the side of the grounding cable after passing around the limit roller.

[0007] As a further aspect of the present invention: a pressure-reducing component is fixedly provided at one end of the adjustable bracket near the center of the wrapping support frame, and the pressure-reducing component is used to maintain the distance between the grounding cable and the reel.

[0008] As a further aspect of the present invention: the pressing component includes an assembly base fixedly connected to the extension end of the adjustable bracket, and two sets of parallel pressure rollers are rotatably arranged at the bottom of the assembly base, with the grounding cable limited between the two sets of pressure rollers on the side away from the adjustable bracket.

[0009] As a further aspect of the present invention: a damping component is provided between the loading frame and the tape reel to maintain the tension of the nonwoven fabric tape.

[0010] As a further embodiment of the present invention: the adjustable bracket includes an inner sleeve column fixedly connected to the wrapping support frame, an outer sleeve column slidably fitted on the outer side of the inner sleeve column, a fastening knob threaded on the side of the outer sleeve column, the end of the fastening knob threaded through the side wall of the outer sleeve column and pressing against the side wall of the inner sleeve column, the mounting base fixedly disposed at the end of the outer sleeve column, and the limiting roller rotatably disposed on one side of the outer sleeve column.

[0011] As a further aspect of the present invention: an adjustable range is provided on the front side of the inner sleeve column.

[0012] As a further aspect of the present invention: the adjustable bracket includes an electric telescopic rod fixedly disposed on the front side of the wrapping support frame, the mounting base is fixedly disposed on the telescopic end of the electric telescopic rod, and the limiting roller is rotatably disposed on one side of the electric telescopic rod.

[0013] As a further aspect of the present invention: a counterweight is fixedly provided on the side of the wrapping support frame away from the adjustable bracket to balance the weight of the wrapping support frame.

[0014] As a further embodiment of the present invention: the driving mechanism includes a motor fixedly disposed inside the support housing, a driving wheel fixedly disposed at the output end of the motor, and a driven wheel coaxially disposed on the rear side of the outer cylinder, which meshes with the driving wheel.

[0015] As a further embodiment of the present invention: a protective shell for protecting the driving wheel and the driven wheel is fixedly provided on the front side of the supporting housing.

[0016] The beneficial effects of this invention are: 1. In use, the loading frame is tilted towards the limiting roller. The non-woven fabric strip in the reel obliquely passes over the limiting roller and, guided by the limiting roller, approaches the surface of the grounding cable obliquely. During this process, the non-woven fabric strip experiences uniform force on both sides, effectively avoiding tension differences due to dragging. This prevents deformation and breakage on both sides of the non-woven fabric, as well as the problem of spiral wrinkles formed during wrapping, ensuring the quality of shielded grounding cable production.

[0017] 2. In this invention, the adjustable bracket can flexibly adjust the height of the limiting roller to adapt to different specifications of wrapping operations. Two sets of parallel pressure rollers limit the grounding cable in a specific position, maintaining the distance between the grounding cable and the tape reel. After the length of the adjustable bracket is fixed, the pressure roller can stably support the grounding cable, causing it to adhere to the bottom of the pressure roller and be limited by it under the tension of the non-woven fabric tape. Maintaining the tension of the non-woven fabric tape ensures stable wrapping and avoids problems such as unstable tension and inability to tightly adhere to the cable core caused by the grounding cable being dragged or shaking due to its light weight. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a non-woven fabric wrapping device for producing shielded grounding cables provided by the present invention; Figure 2 A schematic diagram of the structure of an electric telescopic rod and its mating parts for a non-woven fabric wrapping device for the production of shielded grounding cables provided by the present invention; Figure 3 A schematic diagram of the driving wheel and driven wheel of a non-woven fabric wrapping device for producing shielded grounding cables provided by the present invention; Figure 4 This invention provides a schematic diagram of the drive mechanism for a non-woven fabric wrapping device used in the production of shielded grounding cables.

[0019] Explanation of reference numerals in the attached figures: 1. Support housing; 2. Inner loading cylinder; 3. Outer loading cylinder; 4. Wrapping support frame; 5. Counterweight; 6. Adjustable bracket; 601. Inner sleeve column; 602. Outer sleeve column; 603. Fastening knob; 604. Electric telescopic rod; 7. Limiting roller; 8. Pressing assembly; 801. Mounting base; 802. Pressure roller; 9. Drive mechanism; 901. Motor; 902. Drive wheel; 903. Driven wheel; 10. Loading frame; 11. Belt reel. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a non-woven fabric wrapping device for producing shielded grounding cables, including a supporting housing 1. The supporting housing 1 serves as the basic support structure for the entire device, and an inner carrier cylinder 2 is fixedly installed on its inner side. The inner carrier cylinder 2 extends horizontally through the top of the supporting housing 1, and its main function is to provide a stable channel for the grounding cable, ensuring that the grounding cable can pass smoothly during the wrapping process. An outer connecting cylinder 3 is rotatably installed at the front end of the inner carrier cylinder 2 via a bearing. The supporting housing 1 is also provided with a drive mechanism 9 for driving the outer connecting cylinder 3 to rotate at the front end of the inner carrier cylinder 2. A wrapping support frame 4 is fixedly installed on the front side of the outer connecting cylinder 3, such as... Figure 1 , Figure 2 As shown, the wrapping support frame 4 includes a disc structure connected to the outer cylinder 3, and support structures disposed on both sides of the disc structure.

[0022] An adjustable bracket 6 is fixedly installed on one side of the wrapping support frame 4, and a limiting roller 7 is rotatably mounted on the adjustable bracket 6. The adjustable bracket 6 can flexibly adjust the height of the limiting roller 7 to adapt to wrapping operations of different specifications and requirements. A loading frame 10 is also fixedly installed on the wrapping support frame 4. The loading frame 10 is inclined towards the limiting roller 7. This inclined design is to better guide the direction of the nonwoven fabric strip. A reel 11 is rotatably mounted on the inner side of the loading frame 10. The reel 11 stores the nonwoven fabric strip to be used. In use, the nonwoven fabric strip in the reel 11 can be obliquely wrapped around the limiting roller 7, and then, under the guidance of the limiting roller 7, obliquely approach the surface of the grounding cable. This makes the tension on both sides of the nonwoven fabric strip more uniform, thereby effectively avoiding the problems of deformation, breakage, or spiral wrinkles along the cable direction caused by the nonwoven fabric accumulating like a twisted rope during the wrapping process. The drive mechanism 9 drives the wrapping support frame 4 to rotate, which in turn drives the tape reel 11 and the non-woven fabric tape to rotate around the grounding cable, thereby realizing the wrapping operation of the grounding cable. At the same time, the external winding device drives the grounding cable to move forward continuously, which ensures that the non-woven fabric tape can be evenly wrapped around the grounding cable.

[0023] However, during the wrapping process of the grounding cable, its light weight makes it easily dragged by the non-woven fabric tape, leading to unstable tension on the tape. Furthermore, the cable's movement can cause the non-woven tape to not adhere tightly to the cable core. When the wrapping pitch is large or the tension is uneven, the tape will loosely wrap around the core like a spring, creating a so-called "birdcage" effect. Stable wrapping requires a fixed 50% overlap at each turn of the tape edge, but cable movement causes inconsistent overlap rates, even gaps, severely affecting the wrapping effect.

[0024] To address these issues, in one specific embodiment, a pressing component 8 is fixedly installed at one end of the adjustable bracket 6 near the center of the wrapping support frame 4. The main function of the pressing component 8 is to maintain the distance between the grounding cable and the reel 11. Figure 4 As shown, the pressing assembly 8 includes a mounting base 801 fixedly connected to the extension end of the adjustable bracket 6. Two sets of parallel pressure rollers 802 are rotatably mounted on the bottom of the mounting base 801. The grounding cable is confined between the two sets of pressure rollers 802 on the side away from the adjustable bracket 6, thereby maintaining the distance between the grounding cable and the tape reel 11. Since the length of the adjustable bracket 6 is fixed after adjustment, the two sets of pressure rollers 802 can stably support the grounding cable. Under the tension of the nonwoven fabric tape, the grounding cable adheres to the bottom of the two sets of pressure rollers 802 and is confined by these two sets of pressure rollers 802, thereby maintaining the tension of the nonwoven fabric tape and ensuring stable wrapping operation of the nonwoven fabric tape.

[0025] In addition, a damping assembly is provided between the loading frame 10 and the reel 11. The function of this damping assembly is to maintain the tension of the nonwoven fabric strip. The damping assembly is prior art. In this embodiment, it consists of multiple damping tubes, a needle valve pressure regulating assembly, multiple sealing rings, and an aluminum alloy housing. When the fixed seat of the reel 11 rotates rapidly, the main shaft drives the damping tubes to rotate synchronously. The hydraulic oil in the tubes generates a radial pressure difference due to centrifugal force, pushing the oil through the needle valve throttle orifice. If the rotational speed increases, the centrifugal force increases, and the oil pressure also rises. At this time, by adjusting the opening of the needle valve, the flow resistance of the oil can be increased, so that the damping force and the rotational speed can be rebalanced. The sealing rings prevent oil leakage and ensure that the damping force of the reel 11 remains constant, thereby providing stable tension for the nonwoven fabric strip.

[0026] In the first embodiment, the adjustable bracket 6 includes an inner sleeve post 601 fixedly connected to the wrapping support frame 4. An outer sleeve post 602 is slidably fitted to the outer side of the inner sleeve post 601. A fastening knob 603 is threaded on the side of the outer sleeve post 602. The end thread of the fastening knob 603 passes through the side wall of the outer sleeve post 602 and abuts against the side wall of the inner sleeve post 601. A mounting base 801 is fixedly mounted at the end of the outer sleeve post 602, and a limiting roller 7 is rotatably mounted on one side of the outer sleeve post 602. An adjustment range is provided on the front side of the inner sleeve post 601, and the adjustment range is marked with the diameter of the corresponding cable. In use, the operator can adjust the positional relationship between the inner sleeve post 601 and the outer sleeve post 602 according to the different diameters of the cable and with reference to the adjustment range. Specifically, the outer sleeve post 602 slides along the inner sleeve post 601, thereby causing the mounting base 801 at the end of the outer sleeve post 602 to move away from or closer to the axis of rotation, thus providing stable wrapping space for cables of different sizes. After adjustment, use the fastening knob 603 to fix the positions of the inner sleeve post 601 and the outer sleeve post 602 to ensure the stability of the adjustable bracket 6 during the wrapping process.

[0027] In a second embodiment of the adjustable bracket 6, the adjustable bracket 6 includes an electric telescopic rod 604 fixedly mounted on the front side of the wrapping support frame 4, a mounting base 801 fixedly mounted on the telescopic end of the electric telescopic rod 604, and a limiting roller 7 rotatably mounted on one side of the electric telescopic rod 604. Unlike the first embodiment, this embodiment allows direct control of the length of the adjustable bracket 6 via the electric telescopic rod 604, eliminating the need for manual adjustment and making operation more convenient and efficient.

[0028] The drive mechanism 9 is the power source for the entire device, including a motor 901 fixedly mounted inside the support housing 1. A drive wheel 902 is fixedly mounted at the output end of the motor 901, and a driven wheel 903, meshing with the drive wheel 902, is coaxially fixedly mounted on the rear side of the outer tube 3. In operation, the motor 901 drives the drive wheel 902 to rotate, which in turn drives the driven wheel 903 to rotate. The driven wheel 903 further drives the outer tube 3 to rotate, thereby causing the wrapping support frame 4 to rotate, thus realizing the wrapping operation of the nonwoven fabric strip.

[0029] To ensure stable rotation of the wrapping support frame 4, a counterweight 5 is fixedly installed on the side of the wrapping support frame 4 away from the adjustable bracket 6. The function of the counterweight 5 is to balance the weight of the wrapping support frame 4, ensuring that the centrifugal force is balanced during rotation, mitigating the damage caused by vibration to the overall device, and improving the stability of the device. A protective shell is fixedly installed on the front side of the support housing 1 to protect the driving wheel 902 and the driven wheel 903. The protective shell can prevent external objects from affecting the transmission effect when the driving wheel 902 and the driven wheel 903 are engaged in transmission, ensuring that the drive mechanism 9 can operate normally.

[0030] Working principle: Before the wrapping operation begins, the adjustable bracket 6 is adjusted according to the diameter of the grounding cable. The operator refers to the adjustment range on the inner sleeve post 601 and slides the outer sleeve post 602 along the inner sleeve post 601, causing the end mounting seat 801 to move closer to or away from the rotation axis, reserving a stable wrapping space for cables of different sizes. After adjustment, it is fixed with the fastening knob 603.

[0031] The grounding cable to be wrapped is placed between two sets of pressure rollers 802, which maintain the distance between the grounding cable and the tape reel 11. After the length of the adjustable bracket 6 is fixed, the two sets of pressure rollers 802 can stably support the grounding cable, causing it to adhere to the bottom of the pressure rollers 802 under the tension of the nonwoven fabric tape and be limited by them, thus maintaining the tension of the nonwoven fabric tape and ensuring stable wrapping.

[0032] During the wrapping process, motor 901 starts, driving drive wheel 902 to rotate. Driven wheel 902, through meshing, drives driven wheel 903 to rotate. Driven wheel 903 drives outer cylinder 3 to rotate, and wrapping support frame 4 on the front side of outer cylinder 3 rotates accordingly. Wrapping support frame 4 drives tape reel 11 and non-woven fabric tape to rotate around the grounding cable, realizing the wrapping operation of the grounding cable. At the same time, external winding device drives the grounding cable to move forward continuously, so that the non-woven fabric tape is evenly wrapped around the grounding cable.

[0033] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A non-woven fabric wrapping device for producing shielded grounding cables, comprising a supporting housing (1), an inner carrier cylinder (2) fixedly disposed inside the supporting housing (1), the inner carrier cylinder (2) extending laterally through the top of the supporting housing (1) to provide a channel for the grounding cable, an outer connecting cylinder (3) rotatably disposed at the front end of the inner carrier cylinder (2), a driving mechanism (9) disposed on the supporting housing (1) for driving the outer connecting cylinder (3) to rotate at the front end of the inner carrier cylinder (2), and a wrapping support frame (4) fixedly disposed at the front side of the outer connecting cylinder (3), characterized in that: An adjustable bracket (6) is fixedly provided on one side of the wrapping support frame (4), and a limiting roller (7) is rotatably provided on the adjustable bracket (6). The height of the limiting roller (7) can be adjusted by the adjustable bracket (6). The wrapping support frame (4) is also fixedly provided with a loading frame (10). The loading frame (10) is inclined towards the limiting roller (7). A belt reel (11) is rotatably provided inside the loading frame (10). The non-woven fabric strip output by the belt reel (11) can be wrapped around the side of the grounding cable after passing around the limiting roller (7).

2. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 1, characterized in that, The adjustable bracket (6) is fixedly provided with a pressure-blocking component (8) at one end near the center of the wrapping support frame (4). The pressure-blocking component (8) is used to maintain the distance between the grounding cable and the reel (11).

3. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 2, characterized in that, The pressing component (8) includes a mounting base (801) fixedly connected to the extension end of the adjustable bracket (6). Two sets of parallel pressure rollers (802) are rotatably arranged at the bottom of the mounting base (801). The grounding cable is limited between the two sets of pressure rollers (802) on the side away from the adjustable bracket (6).

4. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 3, characterized in that, A damping component is provided between the loading frame (10) and the tape reel (11) to maintain the tension of the nonwoven tape.

5. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 4, characterized in that, The adjustable bracket (6) includes an inner sleeve column (601) fixedly connected to the wrapping support frame (4), an outer sleeve column (602) slidably fitted on the outer side of the inner sleeve column (601), a fastening knob (603) threaded on the side of the outer sleeve column (602), the end of the fastening knob (603) threaded through the side wall of the outer sleeve column (602) and pressing against the side wall of the inner sleeve column (601), the mounting base (801) fixedly disposed at the end of the outer sleeve column (602), and the limiting roller (7) rotatably disposed on one side of the outer sleeve column (602).

6. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 5, characterized in that, The inner sleeve (601) is provided with an adjustable range on its front side.

7. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 4, characterized in that, The adjustable bracket (6) includes an electric telescopic rod (604) fixedly installed on the front side of the wrapping support frame (4), the mounting base (801) is fixedly installed on the telescopic end of the electric telescopic rod (604), and the limiting roller (7) is rotatably installed on one side of the electric telescopic rod (604).

8. A non-woven fabric wrapping device for producing shielded grounding cables as described in claim 6 or 7, characterized in that, The wrapping support frame (4) is fixedly equipped with a counterweight (5) on the side away from the adjustable bracket (6) to balance the weight of the wrapping support frame (4).

9. A non-woven fabric wrapping device for producing shielded grounding cables as described in claim 8, characterized in that, The drive mechanism (9) includes a motor (901) fixedly installed inside the support housing (1), a drive wheel (902) fixedly installed at the output end of the motor (901), and a driven wheel (903) coaxially fixedly installed on the rear side of the outer cylinder (3) and meshing with the drive wheel (902).

10. The non-woven fabric wrapping device for producing shielded grounding cables as described in claim 9, characterized in that, The front side of the support housing (1) is fixedly provided with a protective shell for protecting the driving wheel (902) and the driven wheel (903).

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