A pipeline outer jacketing apparatus

Abstract

The application relates to a pipeline outer sheath coating device which comprises a base, a linear guide rail pair connected with the base, a first support fixedly arranged at one end of the guide rail, a driver and a driving shaft installed on the first support, a first connecting piece connected with the driving shaft, a second support installed on a sliding block, a rotating assembly and a second connecting piece arranged on the second support, and the driving shaft and a rotating shaft are collinear and used for connecting two ends of a pipeline. The pipeline outer sheath coating device adjusts the position of the second support through the linear guide rail pair, and is suitable for pipelines with different lengths; the driver and the rotating assembly drive the two ends of the pipeline to rotate synchronously respectively, so that the winding uniformity is improved; the overall structure realizes efficient and automatic sheath belt coating operation, and significantly improves the coating quality and consistency.

Description

Technical Field

[0001] This utility model relates to a covering device, and more particularly to a pipeline outer sheath covering device. Background Technology

[0002] In various industrial scenarios such as hydraulic systems, fuel systems, and pneumatic transmission systems, pipelines serve as the core channels for transporting fluids or gases. Their exteriors are constantly exposed to complex environments, making them susceptible to physical wear, high-temperature radiation, and corrosive gases. To improve pipeline durability and safety, engineering projects typically employ the method of wrapping the pipeline's outer wall with an outer sheath, forming a protective layer to enhance its impact resistance, corrosion resistance, and service life. Especially in complex engineering sites (such as shipbuilding, rail transportation, or heavy equipment maintenance), the demand for on-site pipeline sheathing is increasingly prominent, placing higher requirements on the automation level and quality of the sheathing equipment.

[0003] Existing methods for covering pipeline sheaths mostly rely on manual operation, primarily using hand-stretching and wrapping of the sheath tape. Some solutions supplement this with simple rotating platforms or rollers, but the overall structure is generally rudimentary, leading to pipeline misalignment or uneven rotation during the covering process, severely affecting the uniformity of the sheath tape's adhesion. Furthermore, existing devices are generally difficult to adapt to pipes of different lengths or sizes, lacking sufficient flexibility, resulting in compromised production efficiency and inconsistent finished sheath products. Therefore, there is an urgent need to propose a pipeline sheath covering device to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a pipeline outer sheath covering device that can improve the covering efficiency while ensuring that the sheath tape fits tightly and forms a uniform shape with the pipeline.

[0005] The technical solution adopted by this utility model to solve the above problems is: a pipeline outer sheath covering device to cover the outside of the pipe fitting with a sheath, comprising:

[0006] Base;

[0007] A linear guide pair is connected to the base, the linear guide pair including a linear guide fixedly installed with the base and a slider that slides with the guide rail;

[0008] The first support is fixedly connected to the base, and the first support is disposed at one end of the linear guide rail. The first support has a first fixing surface on the side away from the base.

[0009] A driver, disposed at the fixed surface, the driver including a controlled rotating drive shaft, the axial direction of the drive shaft being parallel to the extension direction of the linear guide;

[0010] A first connector is disposed on the drive shaft for connection to one end of the pipeline;

[0011] A second support is connected to the slider, and a second fixed surface is provided on the side of the second support away from the base; a rotating assembly is disposed at the second fixed surface, and the rotating assembly includes a rotating shaft, the axis of which is collinear with the axis of the drive shaft;

[0012] A second connector is provided on the drive shaft for connection to the other end of the pipeline.

[0013] Preferably, the coating device further includes:

[0014] A linear slide, the linear slide including a controllable sliding member, the sliding member moving in a direction parallel to the moving direction of the slider;

[0015] A paddle is provided on the sliding member, and a through groove is provided on the paddle for the sheath to pass through.

[0016] Preferably, the sliding member is configured such that, when the covering device is in operation, there is a partial overlap between two adjacent sheath rings formed by the sheathing tape on the outside of the pipeline.

[0017] Preferably, the through groove is provided with a guide assembly, which includes two pulleys. The two pulleys are respectively disposed on opposite sides of the inner wall of the through groove, and a guide area for the sheath belt to pass through is formed between the two pulleys.

[0018] Preferably, the pulley is elastically connected to the lever so as to abut against the sheath strip passing through the guide area.

[0019] Preferably, the linear slide includes a driver, and the output end of the driver is connected to the sliding member in a transmission connection.

[0020] Preferably, the covering device further includes a transmission assembly, wherein the drive shaft of the driver is connected to the slider via the transmission assembly to drive the slider to move when the drive shaft rotates.

[0021] The beneficial effects of the embodiments of this utility model are as follows:

[0022] 1. By employing a sliding block and a second support connected by a linear guide pair, allowing the second support to slide relative to the base along the linear guide direction, the problem of existing wrapping devices being difficult to adapt to pipelines of different lengths or specifications is effectively solved. This enables flexible adjustment and adaptation to pipelines of different sizes, improving the versatility and practicality of the device. Furthermore, by using a driver and rotating assembly respectively mounted on the first and second supports, and ensuring that the drive shaft and rotating shaft are collinear, the problems of axial offset and uneven rotation of the pipeline during the wrapping process are effectively solved. This achieves the control effect of synchronous rotation at both ends of the pipeline and stable axial transmission, ensuring the stability and consistency of the sheath wrapping process. Even further, by keeping the drive shaft of the driver parallel to the extension direction of the linear guide and providing connectors for connecting both ends of the pipeline, the problems of low efficiency and poor wrapping quality in traditional wrapping methods are effectively solved. This enables efficient, uniform, and standardized sheath wrapping operations through automated clamping and rotation, comprehensively improving wrapping efficiency and product consistency.

[0023] 2. Due to the adoption of a technical means including a linear slide and a pusher set on it, and the pusher is provided with a through groove for the sheath tape to pass through, the moving direction of the slide is parallel to the pipeline axis, and it is used to control the lateral movement of the sheath tape when the covering device is working, so that there is partial overlap between adjacent sheath rings. Therefore, it effectively solves the problem of uneven adhesion or gaps between rings during the sheath tape covering process in the prior art, and thus achieves the technical effect of uniform overlapping and winding of the sheath tape, improving the covering sealing and protection consistency. Attached Figure Description

[0024] Figure 1 This is a schematic structural diagram of the coating device proposed in one embodiment of the present invention.

[0025] Figure 2 This is a schematic side sectional view of the covering device proposed in one embodiment of the present invention.

[0026] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle.

[0027] Wherein: 10, base; 20, linear guide pair; 210, linear guide; 220, slider; 30, first support; 310, first fixed surface; 40, driver; 410, drive shaft; 50, first connector; 60, second support; 610, second fixed surface; 70, rotating assembly; 710, rotating shaft; 80, second connector; 90, linear slide; 1000, lever; 1010, through groove. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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 limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Please see Figure 1 A preferred embodiment of this application provides a pipeline outer sheath covering device for wrapping a sheath tape around the outside of a pipe fitting. The device has a reasonable structural design, is easy to assemble, and can achieve stable connection and synchronous rotation of the pipe fitting, thereby efficiently completing the sheath covering operation.

[0032] The covering device includes a base 10, a linear guide pair 20, a first support 30, a driver 40, a first connector 50, a second support 60, a rotating assembly 70, and a second connector 80. The linear guide pair 20 is connected to the base 10 and includes a linear guide 210 fixedly mounted to the base 10 and a slider 220 slidably engaged with the guide. The first support 30 is fixedly connected to the base 10 and is disposed at one end of the linear guide 210. A first fixing surface 310 is provided on the side of the first support 30 away from the base 10. The driver 40 is disposed at the fixing surface and includes a controlled rotating drive shaft 410, the axial direction of which is perpendicular to the linear guide 210. The linear guide 210 extends in a parallel direction; a first connector 50 is disposed on the drive shaft 410 to connect to one end of the pipeline; a second support 60 is connected to the slider 220, and a second fixed surface 610 is provided on the side of the second support 60 away from the base 10; a rotating assembly 70 is disposed at the second fixed surface 610, and the rotating assembly 70 includes a rotating shaft 710, the axis of which is collinear with the axis of the drive shaft 410; a second connector 80 is disposed on the drive shaft 410 to connect to the other end of the pipeline.

[0033] Specifically:

[0034] The base 10 is the basic support component of the overall frame structure, and its upper part forms an mounting plane for supporting and fixing various functional components. The base 10 can be made of metal materials with high strength and rigidity to ensure the stability of the device during operation.

[0035] The linear guide rail assembly 20 extends along the mounting plane of the base 10 and includes a linear guide rail 210 fixed to the base 10 and a slider 220 that slides with the guide rail. The linear guide rail 210 uses a high-precision guide rail assembly, ensuring smooth movement of the slider 220 along a straight line. The slider 220 is connected to the guide rail via a rolling or sliding engagement mechanism, providing good motion repeatability. This structure allows the slider 220 to reciprocate along the guide rail under driving or external force, thereby driving the connected components to perform linear position adjustments.

[0036] The first support 30 is fixedly connected to one end of the base 10, and has a first fixing surface 310 facing away from the base 10. The first fixing surface 310 is a planar structure, which facilitates the subsequent installation of the driver 40. The support can be connected to the base 10 by welding or screwing to provide stable support. The overall shape of the support can be L-shaped or box-shaped to increase installation strength.

[0037] The driver 40 is mounted on the first fixed surface 310 of the first support 30. It is an electrically controlled drive mechanism, including a controlled rotating drive shaft 410. The axial direction of the drive shaft 410 is parallel to the extension direction of the linear guide 210, thereby ensuring that the rotational motion and the overall guiding motion of the device do not interfere with each other. The driver 40 can be a servo motor, a stepper motor, or an electric actuator, and is equipped with a control system to realize speed regulation and start / stop control. The output end of the driver 40 is connected to the first connector 50 through a coupling or a plug-in connection.

[0038] The first connector 50 is mounted on the drive shaft 410. Its structure can be plug-shaped, sleeve-shaped, or snap-fit, and it is used to fix and connect to one end of the pipeline. The connection method can be snap-fit ​​connection, threaded connection, or elastic snap-fit, which ensures connection strength while providing a certain degree of ease of assembly and disassembly.

[0039] The second support 60 is fixed to the slider 220 and can move along the linear guide 210 with the slider 220, thereby achieving displacement relative to the base 10. A second fixed surface 610 is provided on the side of the second support 60 away from the base 10 for mounting the rotating assembly 70. The structure of the second support 60 should be firmly connected to the slider 220, and its body can be made of structural steel or aluminum alloy to meet strength requirements while controlling the overall weight of the machine.

[0040] The rotating assembly 70 is mounted on the second fixed surface 610 of the second support 60. It includes a rotating shaft 710, the axis of which is collinear with the axis of the drive shaft 410, ensuring that the two ends rotate synchronously after being connected to the other end of the pipeline. The rotating shaft 710 can be mounted on the support via bearings and can be equipped with a torque limiting mechanism or a speed sensing module to monitor its motion status.

[0041] The second connector 80 is mounted on the rotating shaft 710 and has the same structure as the first connector 50. It is used to connect to the other end of the pipeline, so that both ends of the entire pipeline are fixed, achieving a structural layout where one end is actively driven and the other end is passively rotated. The second connector 80 and the rotating shaft 710 can be fixed by a pin connection, elastic clamping, or mechanical slot.

[0042] During use, the operator first connects the pipeline to be sheathed to the first connector 50 and the second connector 80, securing them firmly through snap-fitting, threading, or other mechanical means. Next, the slider 220 is moved along the linear guide 210, moving the second support 60 away from the first support 30, thereby tightening the pipeline and placing it in an axially taut state to prevent jumping or loosening during rotation, ensuring the tightness and uniformity of the subsequent sheathing. After completing the pre-tightening operation, the driver 40 is activated, driving the drive shaft 410 to rotate. Simultaneously, the torque output from the drive shaft 410 drives the pipeline to rotate, which in turn drives the coaxially connected rotating shaft 710 to rotate synchronously, achieving coordinated rotation of the entire pipeline. As the pipeline continues to rotate, the sheath tape, guided by the pusher 1000, is evenly wound around its outer surface. Combined with the feeding action of the slider, adjacent sheath rings can form a stable overlap, completing a high-quality sheathing operation. Throughout the entire wrapping process, the drive 40 operates at a set speed, and the rotation speed is adjusted in real time through a control system such as a PLC to ensure that the tension of the sheath belt and the wrapping angle are coordinated. This ultimately completes the full wrapping of the pipeline's outer sheath.

[0043] This device is suitable for automated production lines, flexible processing platforms, and other similar applications, and is particularly suitable for wrapping operations involving long straight pipelines or irregularly shaped pipe fittings. It operates in environments ranging from room temperature to moderate temperatures, with moderate humidity and no corrosive gases. The device must be installed on a flat and sturdy workbench or base to ensure the linearity of the guide rail movement and the accuracy of the axis alignment.

[0044] In this embodiment, due to the structural arrangement of the base 10 and the linear guide pair 20, the synchronous design of the two-end support and rotation drive, and the adjustable structure of the guide slider 220, the pipeline can maintain the same axis and rotation synchronization during the rotation and wrapping process. This effectively solves the problems of asynchronous pipeline rotation and uneven wrapping in the prior art, and thus achieves the technical effects of efficient and uniform wrapping of the sheath and stable equipment operation.

[0045] To further improve the consistency of overlap and sealing quality when the sheathed tape covers the outer perimeter of the pipeline, please refer to... Figures 2 to 3In some embodiments, the covering device further includes a linear slide 90 and a pusher 1000. This structure allows the sheathing tape to undergo controlled axial feeding during the wrapping process, thereby achieving the continuous formation of adjacent, uniformly overlapping sheathing rings around the pipeline. The linear slide 90 includes a controllably movable slider, the movement direction of which is parallel to the movement direction of the slider 220. The pusher 1000 is disposed on the slider, and a through groove 1010 is provided on the pusher 1000 for the sheathing tape to pass through. Furthermore, the slider is configured such that, when the covering device is in operation, there is partial overlap between two adjacent sheathing rings formed by the sheathing tape on the outer side of the pipeline.

[0046] Specifically:

[0047] The linear slide 90 is mounted on the mounting plane of the base 10, and its structure includes a sliding member capable of controlled movement along a linear guide. The movement direction of the sliding member is consistent with the movement direction of the aforementioned slider 220, that is, it is arranged parallel to the extension direction of the guide rail. The sliding member is connected to the slide drive system through a lead screw pair, electric push rod, cylinder module or linear motor, and under the coordinated control of the controller, precise displacement control is achieved.

[0048] The guide element 1000 is fixedly mounted on the sliding element and is an integral or assembled guide mechanism. A through groove 1010 is provided on its upper part, penetrating the inlet and outlet surfaces of the guide element 1000. This through groove 1010 is used for the insertion of the sheath tape and serves as a guide and limiter. Structurally, the through groove 1010 has a long strip or horseshoe-shaped cross-section. Its shape can be adapted to the material and cross-sectional shape of the sheath tape used to reduce tape offset and tension during movement.

[0049] The pusher 1000 and the sliding member form an integrated follow-up structure. When the coating device is in operation, that is, during the process of the driver 40 driving the pipeline to rotate and complete the sheath winding, the sliding member moves slowly and synchronously along the pipeline axis under the scheduling of the control system, thereby pushing the pusher 1000 to drive the sheath tape to be fed evenly along the axial direction. In this way, the sheath tape no longer stays on a single circumferential path during the coating process, but forms a spirally distributed wrapping trajectory.

[0050] By adjusting the sliding speed and feed pitch of the sliding element, the overlap width between each turn of the sheathing tape on the pipeline surface can be precisely controlled, thus creating a stable and consistent partial overlap area in the circumferential direction between two adjacent sheathing rings. The width of this overlap area is determined in conjunction with the bandwidth of the sheathing tape itself, the pipeline rotation speed, and the feed speed of the sliding element, and can be flexibly adjusted according to different sheathing materials and application requirements.

[0051] This structure is particularly suitable for scenarios requiring high levels of tightness and uniformity in the protective layer, such as the installation of sheaths for outdoor optical cables, gas hoses, or industrial flexible pipelines. During installation, the sheath tape is stably guided by the guide piece 1000 and, under the feeding action of the sliding piece, forms continuous, partially overlapping multi-loop wraps. This not only improves the consistency of the sheath layer but also significantly enhances the finished pipeline's impermeability, resistance to mechanical impact, and abrasion resistance.

[0052] In actual operation, the sheath tape is first drawn from the supply roll and threaded into the through groove 1010 of the puller 1000. Its tension is adjusted so that it naturally adheres to the outside of the section of the pipeline to be covered. Subsequently, the second support 60 is moved by the slider 220, which axially tightens the pipeline to form a stable support. After tensioning is completed, the driver 40 is started, which outputs rotational power to the drive shaft 410, and drives the rotating shaft 710 through the pipeline, thereby forming synchronous rotation of the entire pipeline.

[0053] Meanwhile, the slider on the linear slide 90 moves forward at a predetermined feed speed under the command of the control system, pushing the dial 1000 to guide the sheath tape to feed axially while wrapping around the pipeline. In this way, each rotation of the sheath tape around the pipeline partially covers the edge of the previous rotation, ultimately forming a spiral and stably overlapping sheath structure on the pipeline surface, completing the entire wrapping operation.

[0054] In this embodiment, by using a linear slide 90 and a lever 1000, and by using the sliding lever to achieve axial feeding of the sheath belt and form partial overlap during the sheath covering process, the problem of uneven overlap, difficult positioning control, and unadjustable overlap width in the existing technology is effectively solved. This results in a dense and uniform covering structure, precise overlap control, and adaptability to various sheath materials and pipeline specifications.

[0055] In an embodiment that further optimizes the guiding stability of the sheath tape, a guide component (not shown in the figure) is provided in the through groove 1010 to enhance the path control capability of the sheath tape during insertion and wrapping, preventing the tape from shifting, flipping, or being damaged on the surface during high-speed movement or under tension, thus ensuring the wrapping quality and the integrity of the tape. The guide component includes two pulleys, which are respectively disposed on opposite sides of the inner wall of the through groove 1010, forming a guide area between the two pulleys for the sheath tape to pass through.

[0056] Specifically:

[0057] The guide assembly includes two pulleys, which are respectively installed on opposite sides of the inner wall of the through groove 1010 to form a pair of opposing structures. Each pulley is supported and installed by a bearing mechanism or a rotating shaft assembly, and can rotate freely around an axis. The pulley body can be made of high-strength plastic, nylon, or metal, and its surface can optionally be fitted with a wear-resistant coating to reduce the coefficient of friction between the sheath and the pulley surface, thereby reducing heat accumulation and the risk of wear.

[0058] A guide area for the sheathed belt is provided between the two pulleys. This area is a defined space, slightly wider than the width of the sheathed belt itself, thus effectively limiting its lateral sway without restricting the belt's passage. This guide area runs through the sheathed belt along its feed direction, ensuring the sheathed belt is under restricted guidance throughout the entire guide path. This effectively eliminates problems such as belt skewing and twisting caused by excessively wide guide grooves or the absence of a guiding structure in traditional pulley components 1000.

[0059] The pulley mounting structure can be embedded, bracket-type, or screw-on, flexibly configured according to the different body structures of the pulley 1000. During installation, the pulley spacing can be preset to a fixed size, or fine-tuned using an adjustable slide structure to accommodate sheath materials of different thicknesses or tension requirements. To enhance structural stability, a double-support structure can be used at both ends of the pulley shaft, further improving its rotational smoothness and lifespan.

[0060] The guide component can be integrated into the structure of the pulley 1000, or it can be set as a modular and replaceable unit, facilitating switching between different sheath belt specifications. The axis of the pulley is perpendicular to the direction of movement of the sheath belt, ensuring that the belt passes smoothly along the set trajectory without disturbance.

[0061] Before the wrapping operation begins, the operator draws the sheathing tape from the original feed roll and passes it sequentially through the guide area of ​​the through groove 1010 of the pulley 1000, i.e., the narrow area between the two pulleys. At this time, the sheathing tape is constrained on both sides by the pulleys, maintaining a stable posture in the width direction during movement and preventing tipping or serpentine swaying. During the wrapping process, as the driver 40 rotates the pipeline and synchronously feeds the sliding component, the sheathing tape achieves stable circulation under the constraint of the guide assembly and is continuously output to the wrapping path surface by the pulley 1000. The pulleys rotate synchronously under the friction drive of the sheathing tape, which not only reduces the relative friction between the tape and the pulley 1000 but also improves guiding compliance and tape passage efficiency. Throughout the entire operation, the guide assembly continuously acts on the sheathing tape, guiding it to maintain stable output even at high speeds, effectively avoiding overlap deviations, wrapping wrinkles, or sheath misalignment caused by path instability.

[0062] In this embodiment, by using a guide component in the through groove 1010 of the pusher 1000 and two pulleys to define the path of the sheath belt, the problem of unstable posture, easy twisting or deviation of the sheath belt during the feeding process in the prior art is effectively solved, thereby achieving the technical effect of accurate path guidance, consistent covering position and strong structural stability of the sheath belt.

[0063] Furthermore, in some embodiments, the pulley is elastically connected to the lever 1000 (not shown in the figure) to abut against the sheath strip passing through the guide area, thereby enabling the pulley to achieve continuous and effective elastic contact with the sheath strip passing through the guide area while performing its normal guiding function. The introduction of this structure significantly improves the adhesion stability and force uniformity of the sheath strip during the guiding process.

[0064] Specifically:

[0065] The pulley is connected to the body of the lever 1000 via an elastic component. The elastic component may include a compression spring, a rubber pad, an elastic arm, or a spring sheet structure, and is installed at both ends of the pulley support bearing or between the circumferential supports, enabling the pulley to have compressible displacement capacity within a certain range in the axial or radial direction. In the assembled state, the elastic component maintains a preload, causing the pulley to generate a constant clamping force towards the sheath belt, forming a dynamic abutment.

[0066] Two pulleys are respectively located on opposite sides of the inner wall of the through groove 1010 of the pusher 1000, and are configured through the aforementioned elastic structure to slightly move towards the center of the sheath belt, thereby forming a close-fitting guide during the insertion of the sheath belt. This elastic abutment structure allows the pulleys not only to guide the movement direction of the sheath belt, but also to restrict the vertical floating and radial displacement of the sheath belt during the feeding process through flexible clamping action, effectively enhancing the constraint capacity within the guiding area.

[0067] The sheath belt contacts two pulleys simultaneously in the guide area. The pulleys rotate synchronously due to the sheath belt's influence, reducing the relative sliding friction between the sheath belt and the lever 1000. Simultaneously, the elastic connection allows the pulleys to finely adjust their position according to the sheath belt's thickness, adapting to deformation under different material thicknesses or tension conditions, ensuring the belt is always uniformly fitted and constrained.

[0068] The pulleys can be made of nylon, polyurethane, or high-polymer wear-resistant materials, and their outer ring can be covered with an elastic rubber layer to further improve the cushioning performance and wear adaptability of the contact surface with the sheath belt. The adjustment of the elastic connection part can be controlled by a limiting structure to prevent excessive compression from causing indentations on the sheath belt surface or pulley jamming.

[0069] Before the equipment is operational, the operator leads the sheath tape from the tape supply device and inserts it into the guide groove of the guide piece 1000, passing through the guide area between two pulleys. Due to the elastic connection between the pulleys and the guide piece 1000, the sheath tape, after insertion, can slightly push the pulleys to both sides, forming an elastic fit. After the equipment starts, the sheath tape rotates and winds around the pipeline under the drive system, while the linear slide 90 drives the guide piece 1000 to feed axially. The pulleys rotate freely under the pull of the sheath tape and, under the action of the elastic component, continuously fit against the tape, keeping the sheath tape centered, stable, and without any warping throughout the guiding process. The dynamic response capability of this elastic contact structure ensures that even if the sheath tape experiences slight thickness changes or tension fluctuations during operation, the guiding effect remains consistent, preventing wrapping errors or unstable winding due to localized floating.

[0070] In this embodiment, due to the use of an elastic connection structure between the pulley and the pusher 1000, the pulley can form a continuous and flexible contact with the sheath belt. Therefore, it effectively solves the problems of deviation, shaking or unstable contact of the sheath belt during the guiding process in the prior art, and thus achieves the technical effects of stable feeding posture, reliable guiding fit and smooth path control of the sheath belt.

[0071] To achieve stable feeding of the pusher 1000 along the pipeline axis with the sliding member, thereby forming a continuous and controllable spiral overlap structure during the wrapping process of the sheath, the linear slide 90 in the wrapping device can adopt two different driving methods to adapt to different application environments and control accuracy requirements.

[0072] In one embodiment, the linear slide 90 includes an independently configured driver 40 (not shown in the figure), which is directly connected to the slider via its output end. The driver 40 can be an electric slide module, a stepper motor module, a servo slide, or an electric lead screw, etc., and its output end is connected to the mounting base of the slider or the guide rail slider 220, enabling controllable linear movement of the slider along the guide rail. In this configuration, the driver 40 issues displacement commands through the controller, causing the slider to perform periodic reciprocating motion at a set speed and displacement stroke, facilitating dynamic control of the overlap width between the wrapping rings by adjusting parameters.

[0073] In another embodiment, the covering device does not directly install an independent driver 40 on the linear slide 90. Instead, it drives the sliding member to move through a transmission assembly linked to the drive shaft 410. This transmission assembly may include a sprocket and chain assembly, a synchronous pulley and belt assembly, a gear and rack structure, a helical wheel and screw structure, or a pulley and cable system (not shown in the figure), with one end connected to the drive shaft 410 and the other end connected to the sliding member. When the driver 40 starts and drives the drive shaft 410 to rotate, the transmission assembly converts the rotational motion into linear feed of the sliding member, thereby achieving synchronous movement of the sliding member and the dial element 1000. In this linkage structure, the drive shaft 410 not only undertakes the function of pipeline rotation but also serves as a power source output to the sliding member, avoiding the use of an independent motor drive, effectively simplifying the structure, saving space, and facilitating the synchronization of the sheath's rotational movement with the feed of the dial element 1000. The tension wheel, limit block, guide rail, and other structures in the transmission assembly further enhance transmission accuracy and operational stability, preventing the sliding member from shaking, shifting, or experiencing positional errors.

[0074] Of the two methods mentioned above, the first method, the independent drive 40 method, is suitable for applications with high precision requirements, dynamically adjustable pitch, or strong automation control needs, and has flexibility and control redundancy; the second method, the linkage drive method, is suitable for scenarios with compact structure, simplified control system, and high synchronization requirements, and is suitable for application in medium and low speed wrapping lines.

[0075] In the first driving mode, before starting the wrapping operation, the displacement pitch and speed parameters of the sliding component are set by the control system. After starting the driver 40, its output shaft directly drives the sliding component to feed along the guide rail of the linear slide table 90. At the same time, the driver 40 rotates around the pipeline, so that the sheathing tape is continuously and overlappingly wrapped around the surface of the pipeline.

[0076] In the second driving mode, the movement of the slider is achieved by the rotation of the drive shaft 410 through the transmission assembly. When the driver 40 causes the drive shaft 410 to start rotating, the transmission assembly synchronously converts this rotational output into the linear feed of the slider, forming a wrapping path that is synchronized with the feed, thereby achieving helical overlap.

[0077] Both of the above driving methods support the implementation of sliding component position feedback by setting mechanism limiters or displacement encoders, which helps to achieve closed-loop control of the covering accuracy.

[0078] This structure is suitable for various pipeline sheathing applications, especially flexible production lines with different requirements for sheath overlap width, pitch control accuracy, and motion stability. The independent drive mode is suitable for automated production lines with high requirements for displacement accuracy and control logic; the linked drive mode is suitable for compact structures, simplified control systems, space-constrained environments, or low-cost scenarios. The equipment should be installed in a dry, dust-free, and temperature-appropriate industrial environment to ensure the long-term reliability of the drive unit 40 and transmission components.

[0079] In this embodiment, the sliding component is fed using two driving methods. One method is to directly connect the driver 40 to the sliding component with a separate drive, and the other method is to drive the sliding component through the drive shaft 410 via a transmission assembly. Therefore, the problems of single sliding component feeding method, complex drive structure, or poor motion synchronization in the prior art are effectively solved, thereby achieving the technical effect of diverse sliding component feeding methods, strong adaptability, and high stability of the covering motion.

[0080] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A pipeline outer sheath covering device for covering the outside of a pipe fitting with a sheath tape, characterized in that, include: Base; A linear guide pair is connected to the base, the linear guide pair including a linear guide fixedly installed with the base and a slider that slides with the guide rail; The first support is fixedly connected to the base, and the first support is disposed at one end of the linear guide rail. The first support has a first fixing surface on the side away from the base. A driver, disposed at the fixed surface, the driver including a controlled rotating drive shaft, the axial direction of the drive shaft being parallel to the extension direction of the linear guide; A first connector is disposed on the drive shaft for connection to one end of the pipeline; The second support is connected to the slider, and the second support has a second fixing surface on the side away from the base; A rotating assembly is disposed at the second fixed surface, the rotating assembly including a rotating shaft, the axis of the rotating shaft being collinear with the axis of the drive shaft; A second connector is provided on the drive shaft for connection to the other end of the pipeline.

2. The pipeline outer sheath covering device according to claim 1, characterized in that, Also includes: A linear slide, the linear slide including a controllable sliding member, the sliding member moving in a direction parallel to the moving direction of the slider; A paddle is provided on the sliding member, and a through groove is provided on the paddle for the sheath to pass through.

3. The pipeline outer sheath covering device according to claim 2, characterized in that, The sliding element is configured such that, when the covering device is in operation, there is a partial overlap between two adjacent sheath rings formed by the sheathing tape on the outside of the pipeline.

4. A pipeline outer sheath covering device according to claim 2 or 3, characterized in that, The through groove is provided with a guide assembly, which includes two pulleys. The two pulleys are respectively arranged on opposite sides of the inner wall of the through groove, and a guide area is formed between the two pulleys for the sheath belt to pass through.

5. A pipeline outer sheath covering device according to claim 4, characterized in that, The pulley is elastically connected to the lever so as to abut against the sheath strip passing through the guide area.

6. The pipeline outer sheath covering device according to claim 2, characterized in that, The linear slide includes a driver, and the output end of the driver is connected to the sliding member in a transmission manner.

7. A pipeline outer sheath covering device according to claim 2, characterized in that, It also includes a transmission assembly, wherein the drive shaft of the driver is connected to the slider via the transmission assembly to drive the slider to move when the drive shaft rotates.

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