A structure of a storage reel with constant control of winding tension and a winding machine

Abstract

The utility model discloses a kind of winding tension constant control's storage reel structure and winding machine, belong to plastic tubular product forming technical field. Including: storage reel, tension control mechanism, mounting bracket, driving mechanism, front tape feeding mechanism, rear tape feeding mechanism;Front tape feeding mechanism, rear tape feeding mechanism are symmetrically arranged in mounting bracket both sides and respectively include carousel and storage reel, driving mechanism drives two carousels synchronous rotation, realize reinforcing belt synchronous tape feeding;Tension control mechanism is integrated in storage reel, using bidirectional friction compensation mechanism: axial constant torque increases tension with the decrease of roll diameter, radial elastic friction then reduces tension with the decrease of roll diameter, the both superposition makes tape feeding whole course tension constant.The utility model uses bidirectional friction compensation mechanism to realize the constant control of winding tension, symmetric double carousel structure realizes the relative uniform distribution of transmission mechanism both sides load, runs stably and structure is compact, manufacturing cost is low, reduces the winding machine center height, and need not to dig foundation pit installation.

Description

Technical Field

[0001] This utility model belongs to the field of plastic pipe forming technology, specifically relating to a storage reel structure and winding machine with constant winding tension control. Background Technology

[0002] In the winding process of tape-reinforced plastic composite pipes, when the outer diameter of the pipe and the winding angle are determined, the theoretical bandwidth required for a single reinforcing layer is a constant. For small-diameter pipes (such as outer diameter ≤ 250mm), existing technologies typically use four- or six-belt winding machines, which can meet the process requirements by simultaneously winding a single layer with two or three reinforcing belts.

[0003] However, in large-diameter applications (e.g., outer diameter ≥ 800 mm), if the aforementioned multi-reel synchronous winding single-layer process is used, the width of a single reinforcing strip needs to be significantly increased (typically greater than 360 mm). The introduction of this wide reinforcing strip leads to the following technical drawbacks:

[0004] 1. Tension control instability: During the unwinding process, the wide reinforcing strip is prone to tension fluctuations due to dynamic changes in the roll diameter, resulting in uneven bonding force between winding layers, causing interface peeling or air bubble encapsulation.

[0005] 2. Deterioration of hot-melting effect: The area of ​​the wide-band heating zone increases, and traditional local hot air heating is difficult to achieve a uniform temperature field distribution, resulting in insufficient melting and bonding or thermal stress concentration.

[0006] 3. Increased equipment complexity: To accommodate wide-width winding, large storage reels and guide mechanisms need to be customized, resulting in a large equipment size (usually the center height of the equipment exceeds 1800mm and requires pit installation), a sharp increase in the load on the transmission system, and a significant increase in manufacturing costs and maintenance difficulty.

[0007] To address the aforementioned problems, existing technology has proposed a utility model patent entitled "A Fiber Prepreg Tape Winding Device for Composite Pipes," application number 202420035132.7. This device includes a winding reel with multiple winding rollers spaced circumferentially on it. A composite pipe is threaded through the center of the winding reel, and a guide mechanism is provided on the reel to drive the prepreg tape on the winding rollers to design the winding angle. This guide mechanism includes a guide ring mounted on the winding reel and fitted over the composite pipe. An angle guide cavity, corresponding to each winding roller and through which the prepreg tape passes, is formed on the inner side of the guide ring at intervals. A hot air duct is also fitted onto the composite pipe on the side of the winding reel facing the direction of composite pipe travel. This winding device ensures simultaneous winding of multiple prepreg tapes, reducing the width of the current prepreg tapes and ensuring tight contact between adjacent prepreg tapes, thus solving the current problem of needing edge pressing. Simultaneously, the narrower prepreg tape allows for an increase in the number of strands and the tightness of the winding, thereby improving the strength of the composite pipe.

[0008] However, although the above scheme increases the number of strands and the tightness of winding by simultaneously winding multiple narrower prepreg tapes, it still suffers from tension fluctuations due to changes in roll diameter during the winding process because it lacks a specific tension control mechanism.

[0009] In addition, the winding rollers in this scheme are all set on the same side of the turntable. As the number of winding rollers increases, on the one hand, the equipment size will increase and the cost will increase, and on the other hand, the load on both sides of the turntable will be unbalanced, affecting the stability of operation. Utility Model Content

[0010] This invention addresses the aforementioned problems in the existing technology by proposing a storage reel structure and winding machine with constant winding tension control.

[0011] This utility model can be achieved through the following technical solutions:

[0012] A tape storage reel structure with constant winding tension control includes:

[0013] A tape storage reel is used to output reinforcing tape to the surface of the pipe. As the pipe is conveyed in a straight line and the tape storage reel rotates, the reinforcing tape is wound onto the surface of the pipe and forms a tape-type reinforcing composite layer.

[0014] A tension control mechanism, integrated into the tape storage reel, is configured to dynamically compensate for changes in roll diameter during the unwinding process of the reinforcing tape via a bidirectional friction compensation mechanism, the bidirectional friction compensation mechanism comprising:

[0015] A constant torque component is applied axially to the storage reel, and the unwinding tension increases as the diameter of the reinforcing belt decreases.

[0016] The elastic friction component of the reinforcing belt applied radially to the storage reel decreases the unwinding tension as the reinforcing belt roll diameter decreases.

[0017] The superposition of the constant torque component and the elastic friction component ensures that the reinforcing belt maintains a constant tension throughout the unwinding process.

[0018] As a further improvement of this utility model, the tension control mechanism includes an axial elastic friction device, which includes a first spring. The first spring is sleeved on the spindle of the tape storage reel and applies a constant pressure to the tape storage reel to form the constant torque component.

[0019] As a further improvement of this utility model, the tension control mechanism further includes a radial elastic clamping device, which comprises:

[0020] A pressure plate that contacts the surface of the reinforcing tape wound on the storage reel and provides friction;

[0021] A second spring, one end of which is fixed and the other end of which is connected to the pressure plate to provide radial clamping force;

[0022] The friction between the pressure plate and the reinforcing belt is dynamically adjusted according to the change in the diameter of the reinforcing belt, forming the elastic friction component.

[0023] A winding machine is also provided, having a tape storage reel structure for constant winding tension control as described above, comprising:

[0024] The mounting bracket has a central hole for pipes to pass through;

[0025] The front belt feeding mechanism and the rear belt feeding mechanism are symmetrically arranged on the front and rear sides of the mounting frame. The front belt feeding mechanism and the rear belt feeding mechanism each include a turntable and at least one set of the belt storage trays installed on the turntable.

[0026] A drive mechanism is fixed on the mounting frame. The drive mechanism is linked to the two turntables to drive them to rotate synchronously. The tape storage reel rotates synchronously with the turntables and performs tape feeding during the synchronous rotation.

[0027] As a further improvement of this utility model, multiple sets of the tape storage trays can be evenly distributed along the central circumference on one side of the turntable, and each set of the tape storage trays consists of multiple individual tape storage trays, wherein...

[0028] Multiple sets of the storage tape reels are arranged in circles on the turntable, and the centers of the storage tape reels in adjacent circles are staggered.

[0029] As a further improvement of this utility model, the front end of the feed belt mechanism is also provided with a guide belt mechanism, through which the reinforcing belt output from any of the storage reels is pulled to the surface of the pipe.

[0030] As a further improvement of this utility model, the guide belt mechanism includes:

[0031] A guide belt bracket is fixed concentrically to the turntable of the front feed belt mechanism;

[0032] A guide belt assembly is evenly distributed along the circumference of the guide belt support. The number of guide belt assemblies is the same as the number of storage reels, and they are configured in a one-to-one correspondence. Each guide belt assembly includes:

[0033] Guide rollers are used to guide the reinforcing belt through;

[0034] The guide block has one end hinged to a rotating support mounted on the guide belt bracket. The guide block has a guide belt groove. The angle between the extension direction of the guide belt groove and the center line of the pipe forms a preset winding angle. The reinforcing belt passes through the guide belt groove and then adheres to the surface of the pipe.

[0035] As a further improvement of this utility model, it also includes an annular hot air device, which can be installed on the mounting frame or the guide belt bracket, wherein...

[0036] When the annular hot air device is installed on the mounting frame, the annular hot air device remains fixed.

[0037] When the annular hot air device is installed on the guide belt bracket, the annular hot air device rotates synchronously with the turntable.

[0038] As a further improvement of this utility model, the annular hot air device has a channel along the axial direction for the pipe to pass through, and the air outlet of the annular hot air device is arranged towards the point where the reinforcing belt and the pipe are wrapped together.

[0039] A hot air transfer channel is formed between the inner wall of the annular hot air device and the pipe.

[0040] The air outlet of the annular hot air device is oriented toward the winding end face of the reinforcing belt, whereby the winding end face of the reinforcing belt forms a hot air flow surface.

[0041] As a further improvement of this utility model, the annular hot air device includes:

[0042] An annular air duct, which has channels for guiding hot air;

[0043] Multiple hot air guns are arranged in a circumferential manner and connected to one end of the annular air guide tube.

[0044] An air outlet hood is connected to the other end of the annular air guide tube and is positioned toward the point where the reinforcing belt and the tube are wound together. The air outlet hood has a gradually narrowing air outlet.

[0045] A temperature measuring device is installed on the hot air gun and used to detect the temperature of the hot air.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. Precise and stable tension control improves product quality.

[0048] By integrating a bidirectional friction-compensated tension control mechanism, and combining the superposition of the axial constant torque component and the radial elastic friction component, the tension of the reinforcing belt is kept constant throughout the unwinding process, effectively avoiding tension fluctuations caused by changes in roll diameter. This prevents defects such as interlayer peeling and bubbles, and significantly improves the forming quality and product consistency of the composite pipe.

[0049] 2. The symmetrical belt feeding structure ensures smooth operation and a compact design.

[0050] The front and rear conveyor belt mechanisms are symmetrically positioned on the front and rear sides of the mounting frame, ensuring balanced overall load distribution, reducing vibration and noise, and improving operational stability. Simultaneously, the rational structural layout reduces the equipment's center height, eliminates the need for a foundation pit, enhances adaptability, and lowers manufacturing costs and installation difficulty.

[0051] 3. Multi-strand narrow-band winding process enhances the strength and density of the composite pipe.

[0052] Using multiple sets of narrower reinforcing strips (generally 10mm-40mm) for synchronous winding instead of the traditional wide-band winding method not only improves the compactness and uniformity of the reinforcing layer, but also enhances the compressive and tensile properties of the composite pipe. At the same time, the narrow strip is easier to control the tension, which is beneficial to improving the winding accuracy and yield.

[0053] 4. The guide belt mechanism has an adjustable angle and strong process adaptability.

[0054] The guide belt assembly corresponds one-to-one with the storage reel and is equipped with an adjustable guide belt block to ensure that each reinforcing belt is precisely attached to the pipe surface at a preset winding angle. The hinged structure supports flexible angle adjustment to meet different process requirements.

[0055] 5. The ring-shaped hot air device provides efficient heating and improves bonding performance.

[0056] The outlet of the ring-shaped hot air device is directed towards the joint point between the reinforcing strip and the pipe, enabling precise heating of the contact area between the reinforcing strip and the pipe, promoting full melting and bonding between the two. Combined with the temperature measuring device, a closed-loop temperature control system is formed to ensure stable and controllable heating temperature, improving the overall strength and molding quality of the composite pipe. At the same time, the hot air also flows along the surface of the pipe and the surface of the reinforcing strip, thus playing a good preheating role in the contact area between the two before the reinforcing strip is officially bonded to the pipe. Attached Figure Description

[0057] Figure 1 This is a structural schematic diagram of the winding machine of this utility model;

[0058] Figure 2 This is the utility model Figure 1 A magnified view of a section at point A in the middle;

[0059] Figure 3 This is the utility model Figure 1 A magnified view of a section at point B in the middle;

[0060] Figure 4 This is the utility model Figure 1 A magnified view of a section at point C;

[0061] Figure 5 This is a front view of the front turntable of the mounting bracket of this utility model;

[0062] Figure 6 This is a front view of the rear turntable of the mounting bracket of this utility model.

[0063] In the diagram, 100 is the mounting bracket; 110 is the mounting plate.

[0064] 200. Front belt feeding mechanism; 210. Rear belt feeding mechanism; 220. Turntable; 230. Belt storage tray;

[0065] 300. Tension control mechanism; 310. Axial elastic friction device; 311. First spring; 320. Radial elastic clamping device; 321. Pressure plate; 322. Second spring

[0066] 400. Drive mechanism; 410. Drive motor; 411. Sprocket; 420. Gear bearing structure; 421. Gear bearing inner ring; 422. Gear bearing outer ring; 430. Transition shaft; 431. Drive gear;

[0067] 500. Belt guiding mechanism; 510. Belt guiding bracket; 520. Belt guiding roller; 530. Belt guiding block; 531. Belt guiding groove; 540. Rotating support;

[0068] 600. Annular hot air device; 610. Annular air guide duct; 620. Hot air gun; 630. Air outlet hood; 640. Temperature measuring device;

[0069] 700. Pipes. Detailed Implementation

[0070] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0071] like Figures 1-2 As shown, this utility model provides a storage reel structure with constant winding tension control, comprising:

[0072] The tape storage reel 230 is used to output the reinforcing tape to the surface of the pipe 700. As the pipe 700 is conveyed in a straight line and the tape storage reel 230 rotates, the reinforcing tape is wound onto the surface of the pipe 700 and forms a tape-type reinforcing composite layer.

[0073] Tension control mechanism 300, integrated into tape storage reel 230, is configured to dynamically compensate for changes in roll diameter during the unwinding process of the reinforcing tape via a bidirectional friction compensation mechanism. The bidirectional friction compensation mechanism includes:

[0074] A constant torque component is applied axially to the storage reel 230, and the unwinding tension increases as the diameter of the reinforcing belt decreases.

[0075] The elastic friction component of the reinforcing belt is applied radially to the storage reel 230. The elastic friction component reduces the unwinding tension as the diameter of the reinforcing belt decreases.

[0076] The superposition of the constant torque component and the elastic friction component ensures that the reinforcing belt maintains a constant tension throughout the unwinding process.

[0077] It is through the bidirectional friction compensation mechanism that the reinforcing belt can maintain constant tension throughout the unwinding process, fundamentally solving quality problems such as interlayer peeling and bubbles caused by uneven tension. Furthermore, this bidirectional friction compensation mechanism can automatically adjust the tension output according to the roll diameter change, without the need for manual intervention or complex electronic control systems.

[0078] The following is a detailed description of the tension control mechanism 300:

[0079] Preferably, the tension control mechanism 300 includes an axial elastic friction device 310, which includes a first spring 311. The first spring 311 is sleeved on the spindle of the tape storage reel 230. One end of the first spring 311 abuts against the axial outer end face of the tape storage reel 230, and the other end abuts against a nut fixed on the spindle of the tape storage reel 230, thereby applying a constant pressure to the tape storage reel 230 to form a constant torque component.

[0080] It should be noted that when a constant torque component is applied to the storage reel 230 through the first spring 311, during the tape unloading process, as the diameter of the reinforcing belt on the storage reel 230 gradually decreases, although the applied torque remains unchanged, the pull arm (i.e., the distance from the rotation center to the point where the reinforcing belt is pulled out) also decreases, resulting in a gradual increase in the pull-out force of the reinforcing belt (i.e., the tension of the reinforcing belt).

[0081] Based on this, in order to maintain constant tension during the unwinding process of the reinforcing belt, a radial elastic friction component is added to counteract the increase in tension caused by the constant torque component. This elastic friction component is provided by a radial elastic clamp 320. Specifically, the radial elastic clamp 320 includes:

[0082] The pressure plate 321 contacts the surface of the reinforcing belt wound on the tape reel 230 and provides friction to generate another torque for the rotation of the tape reel 230.

[0083] The second spring 322 has one end fixed and the other end connected to the pressure plate 321 to provide radial clamping force.

[0084] The working principle of the radial elastic clamp 320 is as follows: During the tape unloading process, as the diameter of the reinforcing tape roll on the tape storage reel 230 decreases, the compression of the second spring 322 decreases. At this time, the positive pressure of the pressure plate 321 on the reinforcing tape gradually decreases, and correspondingly, the pull-out force of the reinforcing tape (i.e., the tension of the reinforcing tape) gradually decreases. Therefore, the friction between the pressure plate 321 and the reinforcing tape is dynamically adjusted with the change of the roll diameter, forming the required elastic friction component.

[0085] In other words, the axial elastic friction device 310 causes the tension of the reinforcing belt to increase naturally as the roll diameter decreases, while the radial elastic clamp 320 compensates by reducing the tension, ensuring that the tension of the reinforcing belt remains constant regardless of the roll diameter.

[0086] Therefore, by precisely setting the elastic parameters and pre-compression amount of the first spring 311 and the second spring 322, the tension of the reinforcing belt can be kept constant during the unwinding process. This bidirectional friction compensation mechanism not only solves the tension fluctuation problem commonly found in traditional winding equipment, but also significantly improves the quality and production efficiency of composite pipes.

[0087] like Figures 1-6 As shown, this utility model also provides a winding machine, which has the above-mentioned storage reel structure for constant winding tension control, including:

[0088] Mounting bracket 100 has a central hole for pipe 700 to pass through;

[0089] The drive mechanism 400 is fixed to the mounting bracket 100;

[0090] The front feeding mechanism 200 and the rear feeding mechanism 210 are symmetrically arranged on the front and rear sides of the mounting frame 100. The front feeding mechanism 200 and the rear feeding mechanism 210 each include a turntable 220 and at least one set of tape storage trays 230 mounted on the turntable 220. The drive mechanism 400 is linked to the two turntables 220 to drive them to rotate synchronously. During the synchronous rotation, the tape storage trays 230 perform tape release actions. During this process, as the pipe 700 is linearly conveyed and the tape storage trays 230 rotate and release the tape, the reinforcing tape is wound onto the surface of the pipe 700 at a preset winding angle, forming a tape-type composite reinforcing layer.

[0091] It should be noted that by symmetrically setting the front feeding mechanism 200 and the rear feeding mechanism 210 on the front and rear sides of the mounting frame 100, the load on both sides of the transmission mechanism is relatively evenly distributed, the operation is stable and the structure is compact, the manufacturing cost is low, the center height of the winding machine is reduced, there is no need to dig a pit for installation, and it is highly adaptable to the production workshop.

[0092] In addition, this embodiment uses a multi-band winding method to control the bandwidth of the reinforcing strip within a narrow range (generally 10mm-40mm). The reinforcing strip is stored by reciprocating winding along the axial direction of the storage reel 230. This narrower bandwidth of the reinforcing strip increases the number of strands and the tightness of the winding, improves the strength of the composite pipe, and makes it easier to control the tension, so as to ensure that the bandwidth of the reinforcing strip remains constant during the winding process. Furthermore, the narrower bandwidth is also conducive to uniform heating of the reinforcing strip, avoiding thermal stress concentration during heating, thereby ensuring that the reinforcing strip and the pipe 700 can be fully melted and bonded.

[0093] Overall, this winding machine achieves stable operation and rational space utilization through a symmetrically arranged tape feeding mechanism. By integrating a bidirectional friction-compensated tension control mechanism 300, it effectively solves the tension fluctuation problem caused by changes in roll diameter in existing technologies, significantly improving the winding quality of the reinforcing tape and the overall performance of the composite pipe. Compared with existing technologies, this invention has significant advantages in structural design, tension control accuracy, product quality consistency, and equipment operation stability, and is particularly suitable for the high-efficiency and high-quality manufacturing needs of large-diameter tape-reinforced plastic composite pipes.

[0094] Preferably, multiple sets of storage trays 230 can be evenly distributed along the central circumference on one side of the turntable 220. Each set of storage trays 230 consists of multiple individual storage trays 230. The multiple sets of storage trays 230 are arranged in circles on the turntable 220, and the centers of the storage trays 230 in adjacent circles are staggered.

[0095] This staggered arrangement of rings effectively improves the space utilization of turntable 220, reduces structural interference and tape release interference caused by the concentrated arrangement of tape storage trays 230, and optimizes the winding path, making the reinforcing tape more evenly distributed when wound onto the surface of pipe 700, avoiding tape overlap or uneven gaps.

[0096] The following is a detailed description of the drive mechanism 400:

[0097] Preferably, the drive mechanism 400 includes:

[0098] The drive motor 410 is mounted on the mounting bracket 100;

[0099] The gear bearing structure 420 is connected to both the turntable 220 and the mounting bracket 100.

[0100] The transition shaft 430 is connected to the drive motor 410 via a sprocket 411 (or gear). Both ends of the transition shaft 430 pass through the two mounting plates 110 of the mounting bracket 100 and are equipped with drive gears 431. The two drive gears 431 mesh with the external teeth of the gear bearing structure 420 of the front belt feeding mechanism 200 and the rear belt feeding mechanism 210, respectively.

[0101] The drive motor 410 drives the transition shaft 430 and drive gear 431 to rotate. The drive gear 431 drives the turntable 220 to rotate through the gear bearing structure 420. At this time, the storage trays 230 of the front belt feeding mechanism 200 and the rear belt feeding mechanism 210 rotate and release the belt synchronously. As the pipe 700 continues to move forward and the two winding devices on the left and right are configured, the two adjacent layers of reinforcing belts are intersected and pressed tightly onto the pipe 700 to form a multi-layer spiral reinforcing structure.

[0102] Furthermore, the gear bearing structure 420 includes an inner gear bearing ring 421 and an outer gear bearing ring 422. The inner gear bearing ring 421 is mounted on the mounting plate 110, and the outer gear bearing ring 422 is mounted on the turntable 220.

[0103] The tooth surface of the outer ring 422 of the gear bearing meshes with the drive gear 431. As the drive gear 431 rotates, it drives the outer ring 422 of the gear bearing to rotate, thereby realizing the rotation of the turntable 220 and the rotation of the tape storage tray 230 to feed the tape.

[0104] The drive mechanism 400 achieves efficient and synchronous drive of the front and rear belt feeding mechanisms 210 through gear meshing and gear bearing structure 420. This not only ensures the consistency and uniformity of the reinforcing belt winding, but also enhances the adaptability of the equipment in large-diameter and high-intensity production scenarios. Compared with traditional single-side drive or multi-motor drive methods, this solution has higher transmission accuracy, stronger load capacity and better spatial layout, making it an ideal drive solution for achieving continuous winding of high-quality belt-reinforced plastic composite pipes.

[0105] The following is a detailed description of the belt guide mechanism 500:

[0106] Preferably, the front end of the feed belt mechanism 200 is also provided with a guide belt mechanism 500, through which the reinforcing belt output from any one of the storage reels 230 is pulled to the surface of the pipe 700 by the guide belt mechanism 500, thus guiding the output path of the reinforcing belt.

[0107] Specifically, the guide belt mechanism 500 includes:

[0108] The guide belt bracket 510 is concentrically fixed with the turntable 220 of the front feed mechanism 200 to ensure that it rotates synchronously with the turntable 220.

[0109] The guide belt assemblies are evenly distributed along the circumference of the guide belt support 510. The number of guide belt assemblies is the same as the number of storage reels 230, and the two are configured in a one-to-one correspondence to ensure that each reinforcing belt can obtain an independent and precise guiding path.

[0110] Furthermore, the conductor assembly includes:

[0111] The guide roller 520 is used to guide the reinforcing belt through, initially guide the direction of the reinforcing belt, reduce frictional resistance, and prevent the belt from shifting or twisting;

[0112] The guide block 530 has one end hinged to the rotating support 540 set on the guide support 510, which can be adjusted in angle. The guide block 530 has a guide groove 531. The angle between the extension direction of the guide groove 531 and the center line of the pipe 700 forms a preset winding angle, thereby ensuring that the reinforcing belt is wrapped to the surface of the pipe 700 at a specified angle.

[0113] It is worth mentioning that, since the guide block 530 adopts a hinged structure, the extension direction of the guide groove 531 can be changed by adjusting its installation angle. This design not only ensures the best fit between the reinforcing belt and the surface of the pipe 700 under different working conditions, but also effectively adapts to the production requirements of various winding angle specifications, improving the versatility of the equipment and the adaptability of the process.

[0114] Meanwhile, the adjustable angle function helps to optimize the stress distribution of the strip and reduce defects such as uneven tension, wrinkles or gaps caused by angle deviation, thereby further improving the structural uniformity and overall strength of the composite pipe.

[0115] The following is a detailed description of the annular hot air device 600:

[0116] Preferably, it also includes an annular hot air device 600, which can be installed on the mounting frame 100 or the guide belt bracket 510, wherein,

[0117] When the annular hot air device 600 is installed on the mounting bracket 100, the annular hot air is always fixed;

[0118] When the annular hot air device 600 is installed on the guide belt bracket 510, the annular hot air device 600 rotates synchronously with the turntable 220.

[0119] Regardless of the installation method, the annular hot air device 600 is provided with a channel for the pipe 700 to pass through along the axial direction, and its air outlet is directed toward the joint point between the reinforcing strip and the pipe 700, so as to achieve efficient heating of the contact area between the reinforcing strip and the pipe 700.

[0120] Furthermore, a hot air transfer channel is formed between the inner wall of the annular hot air device 600 and the pipe 700;

[0121] The air outlet of the annular hot air device 600 is oriented toward the winding end face of the reinforcing belt, at which time the winding end face of the reinforcing belt forms a hot air flow surface.

[0122] In other words, the hot air output by the ring hot air device 600 can not only heat the joint point between the reinforcing strip and the pipe 700, but also flow along the surface of the pipe 700 and the surface of the reinforcing strip, thus playing a good preheating role in the contact area between the two before the reinforcing strip is officially attached to the pipe 700.

[0123] Specifically, the annular hot air device 600 includes:

[0124] The annular air guide 610 has a channel for guiding hot air;

[0125] Hot air guns 620 are arranged in multiples and evenly distributed around one end of an annular air guide 610 to stably deliver heated air into the air guide duct, forming a centralized and controllable hot air source.

[0126] An air outlet hood 630 is connected to the other end of the annular air guide tube 610 and is positioned toward the point where the reinforcing strip and the tube 700 are wound together. The air outlet hood 630 is designed with a gradually narrowing air outlet structure, which helps to increase the hot air velocity and concentrate it towards the target area, thereby enhancing heating efficiency.

[0127] Temperature measuring device 640 is installed on hot air gun 620 and used to detect the temperature of the output hot air in real time, so as to realize closed-loop control of the heating process and ensure temperature stability and process consistency.

[0128] In summary, the ring-shaped hot air device 600 enables precise control of the heating temperature of the winding area, allowing the reinforcing strip and the pipe 700 to be quickly heated to the required welding temperature, thereby ensuring good quality of the finished product.

[0129] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0130] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0131] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0132] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0133] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A storage reel structure with constant winding tension control, characterized in that, include: A tape storage reel is used to output reinforcing tape to the surface of the pipe. As the pipe is conveyed in a straight line and the tape storage reel rotates, the reinforcing tape is wound onto the surface of the pipe and forms a tape-type reinforcing composite layer. A tension control mechanism, integrated into the tape storage reel, is configured to dynamically compensate for changes in roll diameter during the unwinding process of the reinforcing tape via a bidirectional friction compensation mechanism, the bidirectional friction compensation mechanism comprising: A constant torque component is applied axially to the storage reel, and the unwinding tension increases as the diameter of the reinforcing belt decreases. The elastic friction component of the reinforcing belt applied radially to the storage reel decreases the unwinding tension as the reinforcing belt roll diameter decreases. The superposition of the constant torque component and the elastic friction component ensures that the reinforcing belt maintains a constant tension throughout the unwinding process.

2. The storage reel structure with constant winding tension control according to claim 1, characterized in that, The tension control mechanism includes an axial elastic friction device, which includes a first spring. The first spring is sleeved on the spindle of the tape storage reel and applies a constant pressure to the tape storage reel, forming the constant torque component.

3. The storage reel structure with constant winding tension control according to claim 1, characterized in that, The tension control mechanism further includes a radial elastic clamping device, which comprises: A pressure plate that contacts the surface of the reinforcing tape wound on the storage reel and provides friction; A second spring, one end of which is fixed and the other end of which is connected to the pressure plate to provide radial clamping force; The friction between the pressure plate and the reinforcing belt is dynamically adjusted according to the change in the diameter of the reinforcing belt, forming the elastic friction component.

4. A winding machine having a storage reel structure for constant winding tension control as described in any one of claims 1-3, characterized in that, include: The mounting bracket has a central hole for pipes to pass through; The front belt feeding mechanism and the rear belt feeding mechanism are symmetrically arranged on the front and rear sides of the mounting frame. The front belt feeding mechanism and the rear belt feeding mechanism each include a turntable and at least one set of the belt storage trays installed on the turntable. A drive mechanism is fixed on the mounting frame. The drive mechanism is linked to the two turntables to drive them to rotate synchronously. The tape storage reel rotates synchronously with the turntables and performs tape feeding during the synchronous rotation.

5. A winding machine according to claim 4, characterized in that, Multiple sets of tape storage trays can be evenly distributed along the central circumference on one side of the turntable. Each set of tape storage trays consists of multiple individual tape storage trays. Multiple sets of the storage tape reels are arranged in circles on the turntable, and the centers of the storage tape reels in adjacent circles are staggered.

6. A winding machine according to claim 4, characterized in that, The front end of the feed belt mechanism is also provided with a guide belt mechanism, through which the reinforcing belt output from any of the storage reels is pulled to the surface of the pipe.

7. A winding machine according to claim 6, characterized in that, The guide belt mechanism includes: A guide belt bracket is fixed concentrically to the turntable of the front feed belt mechanism; A guide belt assembly is evenly distributed along the circumference of the guide belt support. The number of guide belt assemblies is the same as the number of storage reels, and they are configured in a one-to-one correspondence. Each guide belt assembly includes: Guide rollers are used to guide the reinforcing belt through; The guide block has one end hinged to a rotating support mounted on the guide belt bracket. The guide block has a guide belt groove. The angle between the extension direction of the guide belt groove and the center line of the pipe forms a preset winding angle. The reinforcing belt passes through the guide belt groove and then adheres to the surface of the pipe.

8. A winding machine according to claim 7, characterized in that, It also includes a ring-shaped hot air device, which can be installed on the mounting frame or the guide belt support, wherein... When the annular hot air device is installed on the mounting frame, the annular hot air device is always fixed. When the annular hot air device is installed on the guide belt bracket, the annular hot air device rotates synchronously with the turntable.

9. A winding machine according to claim 8, characterized in that, The annular hot air device has a channel along its axial direction for the pipe to pass through, and the air outlet of the annular hot air device is positioned towards the point where the reinforcing belt and the pipe are wound together. A hot air transfer channel is formed between the inner wall of the annular hot air device and the pipe. The air outlet of the annular hot air device is oriented toward the winding end face of the reinforcing belt, whereby the winding end face of the reinforcing belt forms a hot air flow surface.

10. A winding machine according to claim 8, characterized in that, The annular hot air device includes: An annular air duct, which has channels for guiding hot air; Multiple hot air guns are arranged in a circumferential manner and connected to one end of the annular air guide tube. An air outlet hood is connected to the other end of the annular air guide tube and is positioned toward the point where the reinforcing belt and the tube are wound together. The air outlet hood has a gradually narrowing air outlet. A temperature measuring device is installed on the hot air gun and used to detect the temperature of the hot air.

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