A continuous glass fiber wound pipe (RTP) end face sealing cutting device

Abstract

This specification provides one or more embodiments of a continuous fiberglass wound tube (RTP) end-face sealing cutting device. The cutting mechanism includes a sleeve, a first gear, a sliding frame, a cutting motor, a cutting wheel, a second gear, and a rotary table. The sleeve is fixedly installed on a base plate, the first gear is fixedly sleeved around the sleeve, the sliding frame is concentrically arranged with the sleeve, the cutting wheel is fixed to the output end of the cutting motor for directly cutting the end face of the RTP tube, the second gear is sleeved around the cutting motor and meshes with the first gear, and the rotary table is arranged between the second gear and the cutting motor. The cooperative design of the sliding frame and the sliding block, combined with the height and left-right adjustment functions of the support frame, can adapt to the cutting needs of RTP tubes with different wall thicknesses and diameters. The height adjustment mechanism and the positioning support of the support column ensure precise alignment of the tube and the cutting wheel, further improving the cutting accuracy and meeting the processing needs of RTP tubes of various specifications.

Description

Technical Field

[0001] This specification relates to the field of cutting and sealing technology for RTP composite tubes, and more particularly to a cutting and sealing device for the end face of a continuous fiberglass wound tube (RTP). Background Technology

[0002] Continuous glass fiber reinforced thermoplastic spiral pipe (RTP pipe) is a new type of high-performance composite pipe. It is made of thermoplastic as the matrix and continuous glass fiber as the reinforcement through a spiral winding process. It combines the corrosion resistance and flexibility of thermoplastic with the high strength and high modulus of glass fiber. It has been widely promoted and applied in many fields such as municipal water supply and drainage, chemical media transportation, oil and gas field gathering and transportation, and power wiring.

[0003] In actual engineering installations of RTP pipes, the sealing and cutting of their end faces are crucial preliminary processes, directly determining the sealing performance, structural integrity, and overall service life of the pipe connections. The core requirements for end face cutting are to achieve a smooth, burr-free pipe end face with thorough cutting of the fiberglass layer, preventing residual fiberglass filaments from affecting the sealing effect. Sealing, on the other hand, requires a tight fit with the sealing component based on the smooth cut end face, ensuring no leakage risks.

[0004] Currently, the industry mainly uses two methods for cutting and sealing the end face of RTP tubes: traditional manual cutting or ordinary mechanical cutting. Both methods have many technical defects and cannot meet the requirements of high precision and high efficiency processing.

[0005] Firstly, manual cutting relies on the operator's experience, resulting in low cutting precision, poor cut smoothness, and the inability to guarantee the complete cutting of the continuous fiberglass winding layer. Residual fiberglass strands can easily lead to poor sealing and sealing failure. At the same time, manual cutting is extremely inefficient, labor-intensive, and the fiberglass dust generated during the cutting process can seriously endanger the operator's health.

[0006] Secondly, ordinary mechanical cutting equipment has a simple structure and mostly adopts a straight cutting method with a fixed angle. It cannot achieve uniform circumferential cutting of the pipe end face, and is prone to problems such as tilted cut and broken and splashed glass fiber layer. In addition, it lacks a targeted heating and softening design, resulting in high cutting resistance. This can easily lead to cracking of the thermoplastic layer on the pipe end face and deformation of the inner wall, further affecting the processing quality.

[0007] In view of the shortcomings of the existing technologies, there is an urgent need to develop an RTP pipe end-face sealing and cutting equipment that integrates cutting, heating, dust removal, sealing and other functions with precision cutting as the core, has strong adaptability and high degree of automation, and can effectively solve the pain points of traditional processes to meet the needs of industry development. Summary of the Invention

[0008] In view of this, the purpose of one or more embodiments of this specification is to provide a continuous fiberglass wound tube (RTP) end face sealing and cutting device to solve the problems of poor adaptability, low degree of automation, and inability to effectively solve the pain points of traditional processes.

[0009] Based on the above objectives, one or more embodiments of this specification provide a continuous fiberglass wound tube (RTP) end face sealing and cutting device, including a base plate. A cutting mechanism is fixedly installed on the upper surface of the base plate. The cutting mechanism is the core cutting unit of the device and is used to achieve high-precision rotary circumferential cutting of the RTP tube end face.

[0010] The cutting mechanism includes a sleeve, a first gear, a sliding frame, a cutting motor, a cutting wheel, a second gear, and a rotary table. The sleeve is fixedly installed on the base plate, the first gear is fixedly sleeved around the sleeve, the sliding frame is concentrically arranged with the sleeve, the cutting motor is installed on the sliding frame, and the cutting wheel is fixed to the output end of the cutting motor for directly cutting the end face of the RTP pipe. The second gear is sleeved around the cutting motor and meshes with the first gear. The rotary table is arranged between the second gear and the cutting motor. The rotary table drives the second gear to revolve around the first gear, thereby driving the cutting wheel to perform a rotating circumferential cutting motion to achieve comprehensive cutting of the end face of the RTP pipe.

[0011] Preferably, the cutting wheel is made of diamond material and is adapted to the composite cutting of the thermoplastic layer and the continuous glass fiber winding layer of the RTP tube, ensuring a smooth and burr-free cutting surface.

[0012] Preferably, the first gear is an internal gear ring structure and the second gear is an external gear structure. The meshing transmission between the two realizes the revolution of the cutting wheel, and the transmission process is smooth and without jamming, ensuring the ring cutting accuracy.

[0013] Preferably, the sliding frame is provided with a sliding groove, and a sliding block is slidably arranged in the sliding groove. The cutting motor is fixedly installed on the sliding block, and the sliding block can slide smoothly along the sliding groove to adapt to the cutting requirements of RTP pipes with different wall thicknesses.

[0014] Preferably, the sleeve is fixed to the upper surface of the base plate by a support frame. The bottom of the support frame is provided with an electromagnetic telescopic structure and a transverse electromagnetic sliding component. The electromagnetic telescopic structure is used to adjust the height of the sleeve, and the transverse electromagnetic sliding component is used to adjust the left and right position of the sleeve to ensure that the cutting wheel is precisely aligned with the end face of the RTP tube.

[0015] Preferably, the cutting mechanism employs a double-layer circumferential cutting process. The first circumferential cut quickly severs the outer plastic layer and most of the fiberglass layer of the RTP tube, while the second circumferential cut completely severs the remaining fiberglass layer, thus preventing fiberglass residue from affecting subsequent processing.

[0016] Preferably, the sleeve is provided with a support column inside, one end of which passes through the sleeve and is fixedly provided with a limiting piece. The support column is used to insert into the RTP tube to provide support and prevent deformation of the inner wall of the tube during cutting and heating. The limiting piece is used to axially position the RTP tube.

[0017] Preferably, a height adjustment mechanism is also provided on one side of the upper surface of the base plate. The height adjustment mechanism includes a first telescopic rod, a top frame, a ball head, a top plate, and a tube frame. The tube frame is used to support the RTP tube and cooperate with the cutting mechanism to complete precise cutting.

[0018] Preferably, the tube frame is provided with a heating chamber opening, and a wind frame is provided on one side of the heating chamber opening. The wind frame has air holes on the outer ring and air grooves on the inner ring. The air holes are connected to the dust collection and hot air supply structures, which are used for dust collection during the cutting process and hot air treatment of the cut surface after cutting, respectively. The other end of the sleeve is provided with an inner cavity, and a heating coil is installed on the inner wall of the inner cavity. A second telescopic rod is evenly arranged in the inner cavity, and a pressure plate is fixed at the top of the second telescopic rod for hot-pressing fusion of the sealing ring of the RTP tube end face after cutting.

[0019] Preferably, two sets of first telescopic rods are provided on one side of the upper surface of the base plate, a crossbar is installed at the top of the first telescopic rod, and a shaping mounting plate is fixedly installed at the crossbar at the top of the first telescopic rod in front by a steel plate, and a shaping frame is installed on one side of the shaping mounting plate; The heating bracket is fixedly installed at the top of the first telescopic rod via a crossbar and a connecting rod, and a heating plate is installed on the heating bracket.

[0020] As can be seen from the above, the one or more embodiments provided in this specification, through optimization of the cutting structure and process, combined with auxiliary function design, have the following beneficial effects compared to the prior art: 1. Strong cutting adaptability and wide range of applications: The cooperative design of the sliding frame and sliding block, combined with the height and left and right adjustment functions of the support frame, can adapt to the cutting needs of RTP pipes with different wall thicknesses and pipe diameters; the height adjustment mechanism and the positioning support of the support column ensure that the pipe and the cutting wheel are precisely aligned, further improving the cutting accuracy and meeting the processing needs of RTP pipes of various specifications.

[0021] 2. High cutting efficiency and high degree of automation: It integrates rotary circumferential cutting, heating and softening, dust collection, hot air treatment and sealing into one unit, eliminating the need for multiple equipment transfers. During the cutting process, PLC control enables double-layer circumferential cutting, automatic positioning and adjustment, reducing manual intervention, greatly improving processing efficiency and reducing the labor intensity of operators.

[0022] 3. Green and environmentally friendly, safe to operate: During the cutting process, the ring-shaped dust collection structure of the air frame can efficiently capture the glass fiber dust and plastic dust generated during cutting. The dust collection effect is enhanced, especially when cutting glass fiber layers, to avoid dust in the workshop and protect the health of operators. The cutting mechanism is equipped with a protective frame to block cutting spatter and improve operational safety. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in one or more embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the wind frame of the present invention; Figure 3 This is a schematic diagram of the first cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 This is a schematic diagram of the second cross-sectional structure of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the sliding frame of the present invention; Figure 7 This is a schematic diagram of the first three-dimensional structure of Embodiment 4 of the present invention; Figure 8 This is a schematic diagram of the second three-dimensional structure of Embodiment 4 of the present invention.

[0025] In the diagram, 1. Base plate; 11. Base frame; 12. Frame body; 2. First telescopic rod; 21. Top frame; 22. Ball head; 23. Top plate; 24. Pipe rack; 25. Auxiliary cavity; 26. Heating cavity opening; 27. Wind frame; 28. Wind hole; 29. ​​Wind duct; 210. Fan outlet; 211. Collection bag; 3. Support frame; 31. Sliding frame; 32. First gear; 33. Sleeve frame; 34. Sliding block; 35. Second gear; 36. Cutting motor; 37. Cutting wheel; 38. Support column; 39. Limiting plate; 310. Rotary table; 311. Slide groove; 4. Second telescopic rod; 41. Pressure plate; 42. Heating coil; 43. Inner cavity; 5. Shaping mounting plate; 51. Shaping plate; 52. Steel plate; 53. Horizontal frame; 54. Heating bracket; 55. Heating plate; 56. Connecting rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Continuous fiberglass reinforced thermoplastic composite pipe (RTP pipe), with its advantages of high strength, corrosion resistance, lightweight and flexibility, has become a core pipe material in fields such as long-distance oil and gas transportation, municipal water supply and drainage, and mine tailings transportation. However, the cutting and sealing of RTP pipe ends has always been a pain point in the industry: traditional manual cutting is inefficient, results in poor cut smoothness, and easily leaves residual or broken fiberglass layers; conventional sealing equipment cannot adapt to the welding characteristics of thermoplastic materials, easily leading to seal failure. This equipment addresses the above pain points by integrating a fully automated system that combines height adjustment, heating and softening, rotary ring cutting, dust collection, hot air treatment, and sealing, achieving efficient and precise processing of RTP pipe ends and providing a reliable solution for large-scale engineering applications.

[0029] Example 1:

[0030] like Figure 1 , Figure 3 and Figure 5 , Figure 6 As shown, a continuous fiberglass wound tube (RTP) end-face sealing cutting device is provided, wherein a height adjustment mechanism is provided on one side of the upper surface of the base plate 1, and a cutting mechanism is installed on one side of the height adjustment mechanism; The cutting mechanism includes a sleeve 33, a cutting motor 36, and a cutting wheel 37. The sleeve 33 is fixed to the upper surface of the base plate 1 by a support frame 3. An electromagnetic telescopic structure is provided on the lower surface of the support frame 3 to control its height, and a transverse electromagnetic sliding component is provided at the top of the electromagnetic telescopic structure to control the left and right positions, ensuring complete cutting. A set of fixed first gears 32 is provided on the periphery of the sleeve 33. A sliding frame 31 is also provided on the sleeve 33 on one side of the first gear 32. A sliding block 34 is restricted to slide stably on the sliding frame 31 by a sliding groove 311. A cutting motor 36 is provided on the sliding frame 31 to provide cutting power. A cutting wheel 37 is provided at the output end of the cutting motor 36. A second gear 35 is provided on the periphery of the cutting motor 36 corresponding to the first gear 32 and meshes with the first gear 32. The contact surface between the second gear 35 and the cutting motor 36 is matched by a rotary table 310. The rotation of the rotary table 310 drives the second gear 35 to rotate around the first gear 32, achieving a rotary cutting effect.

[0031] The cutting mechanism's drive components are all controlled by a PLC closed-loop system, automatically adjusting the height and lateral position of the sleeve 33 according to the pipe's diameter and wall thickness. The electromagnetic telescopic structure at the bottom of the support frame 3 is an electric push rod, providing rapid response and real-time fine-tuning of the sleeve height to adapt to pipes of different wall thicknesses. The transverse electromagnetic sliding component is a linear module, ensuring precise positioning and maintaining accurate contact between the cutting wheel 37 and the pipe end face. The system incorporates a vibration monitoring sensor, automatically reducing the feed speed when abnormal cutting vibration occurs to prevent blade breakage and cut cracking, ensuring equipment safety and cutting quality. After cutting, the system automatically triggers a secondary circumferential cutting command, ensuring thorough cutting of the fiberglass layer without manual intervention, laying a solid foundation for subsequent sealing operations.

[0032] To address the issue of incomplete cutting of continuous fiberglass layers, the equipment employs a dual-layer circumferential cutting process: the first circumferential cut is a coarse cut, using a high feed rate to quickly sever the outer plastic layer and most of the fiberglass layer, improving cutting efficiency; the second circumferential cut is a fine cut, using a lower feed rate to slowly and thoroughly sever any remaining fiberglass filaments, preventing fiber residue from affecting the sealing of subsequent sealing operations. During the cutting process, the damping components built into the sliding frame 31 absorb high-frequency vibrations, further improving the smoothness of the cut and reducing burr formation.

[0033] The sleeve 33 is provided with a support column 38 for internal support of the pipe. During the heating stage, it provides support to prevent the internal temperature of the pipe from accumulating and causing deformation of the inner wall.

[0034] One end of the support column 38 passes through the sleeve 33 and is fixedly fitted with a limiting piece 39.

[0035] The cutting motor 36 drives the cutting wheel 37 to rotate at high speed while it revolves stably around the first gear 32, thereby achieving continuous circumferential cutting of the pipe end face. The rotary table 310 has a built-in angle sensor that can provide real-time feedback on the revolution position, ensuring the roundness of the cutting wheel 37's trajectory and guaranteeing a uniform and consistent cut.

[0036] Example 2:

[0037] like Figure 1 , Figure 3 , Figure 5 As shown, the height adjustment mechanism includes a first telescopic rod 2. The top end of the first telescopic rod 2 supports the top plate 23 through a top frame 21 and a ball head 22. A positioning bolt for fixing the angle of the ball head is provided between the top frame 21 and the ball head 22.

[0038] The first telescopic rod 2 in the height adjustment mechanism is an electric push rod with worm gear drive and a power-off self-locking function. It can realize the smooth lifting and lowering of the top plate 23 and can be adapted to various commonly used pipe diameters. The ball head 22 is made of high-strength alloy material with hard chrome plating, which has excellent wear resistance. Combined with the universal adjustment function of the top frame 21, it can realize multi-angle fine adjustment of the top plate 23 to ensure the coaxial alignment of the RTP pipe and the cutting mechanism, and avoid the cutting deviation caused by eccentric cutting. The positioning bolt adopts a self-locking design. After the angle is adjusted, it can firmly lock the position of the ball head 22 to prevent the angle deviation caused by cutting vibration and ensure positioning stability. The suspension plate under the top plate 23 is made of carbon steel with a rust-proof coating. It can stably support the weight of the pipe rack 24 and buffer the longitudinal vibration during the cutting process, reducing the impact of vibration on cutting accuracy.

[0039] The tube frame 24 is fixedly installed below the top plate 23 by two suspension plates. The tube frame 24 has a heating cavity 26. An auxiliary cavity 25 is provided on the tube frame 24 above the heating cavity 26. A heating coil is installed inside the heating cavity 26.

[0040] The heating chamber 26 is a circular through-hole containing a tightly wound annular heating coil. The coil is evenly distributed, ensuring uniform preheating of the pipe end face and preventing localized overheating that could lead to pipe deformation. The heating temperature is monitored in real-time by an infrared thermometer, and the PLC automatically adjusts the coil power to soften the thermoplastic layer on the pipe surface to its optimal cutting state, reducing cutting resistance, minimizing fiberglass breakage and spatter, and improving cutting smoothness. An insulation layer is installed around the heating chamber 26 to effectively reduce heat loss, improve heating efficiency, and lower the equipment surface temperature, ensuring operator safety.

[0041] It is used to heat the RTP tube during use, so as to initially soften it and reduce the difficulty of cutting.

[0042] The auxiliary chamber 25 is divided into two chambers: one side is a chamber for providing high-temperature hot air, and the other side is a chamber for vacuuming. The vacuuming chamber is equipped with a cloth bag for storing dust. Fan ports 210 are provided at the pipe racks 24 on both sides of the two chambers. Fans are installed in the fan ports 210. The fan corresponding to the high-temperature hot air chamber blows air, while the fan corresponding to the vacuuming chamber draws air.

[0043] The auxiliary chamber 25 adopts a double-layer stainless steel plate structure with an insulation layer in the middle, which can effectively reduce heat loss and improve the efficiency of heating and hot air treatment, while also providing a certain sound insulation effect. The auxiliary chamber 25 is divided into left and right independent chambers with functions that do not interfere with each other: the left side is a high-temperature hot air chamber with a built-in heater and variable frequency fan, which can generate stable high-temperature hot air for subsequent cutting and burr treatment. The right side is the dust collection chamber, which contains a built-in high-efficiency filter bag 211 and an exhaust fan. It can efficiently capture fiberglass dust and plastic dust generated during cutting, avoiding dust pollution. The chamber adopts a sealed design to prevent crosstalk between hot air and dust collection airflow, ensuring that both functions can operate stably. The filter bag in the dust collection chamber is equipped with a monitoring component. When the filter bag becomes clogged, an alarm is automatically triggered to remind the operator to replace the filter bag, ensuring dust collection efficiency and maintaining normal equipment operation.

[0044] like Figure 2 As shown, a wind frame 27 is provided on one side of the heating gun nozzle 26. Wind holes 28 are evenly opened on the outer ring of the wind frame 27, while wind grooves 29 are opened on the inner ring of the wind frame 27.

[0045] Among them, the air holes 28 on the air frame 27 are connected to the fans of the dust collection chamber and the high-temperature hot air chamber through air pipes.

[0046] The air frame 27 has a ring-shaped structure with multiple evenly distributed oblique air holes 28 on the outer ring and an annular air groove 29 on the inner ring. Together, they form an annular negative pressure zone, allowing for comprehensive and thorough dust collection from the cutting process. When cutting to a continuous fiberglass winding layer, the dust extraction fan automatically increases its power to enhance the negative pressure effect, preventing fiberglass dust from polluting the workshop environment and harming the health of operators. After cutting, the dust extraction fan is turned off, and the fan and heater in the high-temperature hot air chamber are activated. High-temperature hot air is blown obliquely through the air holes 28 and air grooves 29, forming a spiral airflow that melts residual burrs and naturally adheres to the pipe end face, further optimizing the cut smoothness, removing burr defects, and providing a uniform and smooth bonding interface for sealing and fusion. The temperature of the hot air treatment is monitored in real time by a PLC to maintain a stable state, ensuring consistent burr treatment and improving the overall quality of the cut.

[0047] When cutting, the fan in the dust collection chamber is activated to collect the dust generated during cutting. When cutting the continuous fiberglass winding layer, the fan in the dust collection chamber is turned on to the maximum power to avoid dust generated by broken fiberglass. After cutting is completed, turn off the fan in the dust extraction chamber and turn on the fan in the high-temperature hot air chamber. At the same time, turn on the heater in the high-temperature hot air chamber to heat the cut pipe section with hot air and reduce burrs.

[0048] Heating chamber 26: a circular through hole with a built-in heating coil, so that heat is evenly applied to the end face of the pipe, softening the thermoplastic layer to reduce cutting resistance and reduce the breakage of the glass fiber layer; Auxiliary chamber 25: It is divided into left and right independent chambers. The left side is a high-temperature hot air chamber (with built-in heater and fan), and the right side is a dust collection chamber (with built-in bag filter and exhaust fan). The chambers are designed to reduce heat loss. Fans are installed at the fan ports 210 on both sides. The fan in the hot air chamber is responsible for blowing air, and the fan in the dust collection chamber is responsible for suction air.

[0049] Example 3:

[0050] like Figure 3 , Figure 5 As shown, the other end of the sleeve 33 is provided with an inner cavity 43 for storing sealing rings. Four second telescopic rods 4 are evenly installed in the inner cavity 43, and a pressure plate 41 is fixedly installed at one end of each second telescopic rod 4.

[0051] The inner cavity 43 at the end of the sleeve 33 is an annular chamber with an anti-stick coating sprayed on the inner wall to prevent the sealing ring from sticking to the cavity wall after softening during heating, facilitating the removal and replacement of the sealing ring. The chamber size is perfectly matched to the arc-shaped structure of the sealing ring, ensuring uniform heating of the sealing ring during the heating process and avoiding sealing defects caused by insufficient or excessive softening in certain areas. The heating coil 42 in the inner cavity 43 is a high-efficiency heating coil with an annular distribution and a gradient temperature control design, ensuring uniform heat distribution and synchronous and uniform heating of the sealing ring and the pipe end face, guaranteeing consistent softening levels and improving welding compatibility. The power of the heating coil 42 is automatically adjusted by the PLC according to the pipe material, ensuring that the softening temperature of the sealing ring and the pipe end face is stable at the optimal welding state, guaranteeing welding quality.

[0052] The inner wall of the inner cavity 43 is provided with a heating coil 42 for heating the sealing ring and the cross-section of the tube to facilitate fusion.

[0053] A protective frame 12 is installed on the base plate 1 outside the cutting mechanism.

[0054] The protective frame 12 outside the cutting mechanism is made of transparent acrylic material, which has excellent impact resistance and high transparency. It can block dust and debris flying from the cutting mechanism, ensuring the personal safety of operators, and also allows real-time observation of the internal cutting and sealing process, facilitating equipment debugging and operation monitoring, and enabling timely detection and handling of abnormal situations. The equipment is equipped with a visual operation interface, which is easy to operate, can store multiple sets of process parameters, supports one-click recall, and is adaptable to the processing needs of RTP pipes of different diameters and materials, improving operational efficiency.

[0055] The sleeve has a cylindrical structure, combining lightweight and high rigidity, and is fixed to the base plate by a support frame. The bottom of the support frame integrates two types of drive components: one for adjusting the height of the sleeve to adapt to pipes of different wall thicknesses; the other for adjusting the left and right position of the sleeve to ensure that the cutting wheel is always aligned with the end face of the pipe.

[0056] Both types of components are controlled by a closed-loop control system, which can automatically adjust the cutting position according to the pipe diameter and wall thickness to achieve full-range adaptation and ensure cutting accuracy.

[0057] The system incorporates a three-stage heat fusion process, controlled by a PLC closed-loop system. Each stage of the process runs automatically without manual intervention, ensuring process consistency and sealing quality stability. Heating stage: The heating coils of the inner cavity 43 and the tube rack 24 work synchronously to fully soften the sealing ring and the end face of the tube. The heating time is automatically adjusted according to the material characteristics to ensure that the thermoplastic material reaches the best welding state. During the pressure application phase: the second telescopic rod 4 maintains a constant thrust to ensure that the sealing ring fits tightly against the end face for an appropriate duration, completely eliminating the interface gap and further improving the welding area and fit. Cooling stage: The heating coil stops working and the pressure is maintained until the fusion interface cools and solidifies naturally. The cooling time is automatically adjusted according to the ambient temperature and material to ensure the sealing strength and stability of the seal and to avoid cracks caused by excessive cooling.

[0058] Example 4:

[0059] like Figure 6 , Figure 7 As shown, two sets of first telescopic rods 2 are provided on one side of the upper surface of the base plate 1. A crossbeam 53 is installed at the top of the first telescopic rod 2. A plastic mounting plate 5 is fixedly installed at the crossbeam 53 at the top of the first telescopic rod 2 in front by a steel plate 52. A plastic frame 51 is installed on one side of the plastic mounting plate 5. The heating bracket 54 is fixedly installed at the top of the first telescopic rod 2 via a crossbar 53 and a connecting rod 56, and a heating plate 55 is installed on the heating bracket 54. During use, the structure is heated and shaped through two sets of first telescopic rods 2.

[0060] Working principle: This equipment focuses on precise cutting of RTP pipe end faces. Through a continuous automated process of "positioning and support → heating and softening → rotary circumferential cutting → dust collection → hot air treatment → sealing and fusion," it achieves efficient cutting and reliable sealing of RTP pipe end faces. The specific working principle is as follows: 1. Positioning and Support Stage: Place the RTP pipe to be processed on the pipe rack 24, adjust the height of the top plate 23 using the first telescopic rod 2 to match the pipe diameter; use the ball head 22 to finely adjust the angle of the top plate, and use the centering device to ensure that the RTP pipe is coaxially aligned with the cutting mechanism, and tighten the positioning bolts to fix the angle; insert the support column 38 into the RTP pipe, and use the limiting plate 39 to axially position the pipe to prevent displacement, eccentricity and other problems during the cutting process, and ensure cutting accuracy.

[0061] Heating and softening stage: The heating coil of heating chamber 26 is activated to preheat the end face of RTP pipe evenly. The infrared thermometer provides real-time temperature data, and the PLC automatically adjusts the coil power to soften the thermoplastic layer on the surface of the pipe to the optimal cutting state, preparing it for subsequent precise cutting.

[0062] Rotary circumferential cutting stage: The cutting motor 36 is started to drive the cutting wheel 37 to rotate at high speed. At the same time, the rotary table 310 drives the second gear 35 to revolve around the first gear 32, realizing the rotary circumferential cutting motion of the cutting wheel on the end face of the pipe. The system automatically triggers the double-layer circumferential cutting process. In the rough cutting stage, the outer plastic layer and most of the glass fiber layer are quickly cut off to improve cutting efficiency. In the fine cutting stage, residual glass fiber is completely removed to ensure thorough cutting. The drive component adjusts the height and left and right position of the sleeve in real time to ensure that the cutting wheel is always in precise contact with the end face of the pipe, ensuring the flatness and smoothness of the cut.

[0063] Dust collection: The dust collection chamber fan is activated simultaneously during the cutting process, and the air frame 27 forms an annular negative pressure zone to capture fiberglass dust and plastic dust generated during cutting from all directions, preventing dust from flying. When cutting to a continuous fiberglass winding layer, the fan power is automatically increased to enhance the dust capture effect and maintain the cleanliness of the workshop environment and the health of the operators.

[0064] Hot air treatment: After completing the double-layer ring cutting, turn off the dust extraction fan and start the fan and heater of the high-temperature hot air chamber. The high-temperature hot air forms a spiral airflow through the air hole 28 and the air groove 29, which evenly blows the pipe cut, melts the residual burrs, makes the cut surface smoother, further optimizes the cut quality, and provides a good bonding interface for the sealing ring fusion.

[0065] Sealing and fusion stage: The heating coil of the inner cavity 43 is activated to preheat the sealing ring and the end face of the RTP tube in the inner cavity simultaneously, so that the surfaces of both are fully softened; the second telescopic rod 4 is activated to push the pressure plate 41 to smoothly push the sealing ring to the end face of the tube and apply constant pressure to make the softened sealing ring fit tightly against the end face of the tube; the pressure is kept constant until the fusion interface cools and solidifies naturally, completing the sealing process of the end face of the RTP tube. The entire process is completed in a closed loop, and the workpiece can be directly removed to enter the next process.

[0066] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, and there are many other variations of different aspects of one or more embodiments of this specification as described above, which are not provided in detail for the sake of brevity.

[0067] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

Claims

1. A continuous fiberglass wound tube (RTP) end face sealing and cutting device, comprising a base plate (1) on which a cutting mechanism is fixedly disposed on the upper surface of the base plate (1), the cutting mechanism being the core cutting unit of the device, used to achieve high-precision rotary circumferential cutting of the RTP tube end face, characterized in that: The cutting mechanism includes a sleeve (33), a first gear (32), a sliding frame (31), a cutting motor (36), a cutting wheel (37), a second gear (35), and a rotary table (310). The sleeve (33) is fixedly installed on the base plate (1). The first gear (32) is fixedly sleeved on the outer periphery of the sleeve (33). The sliding frame (31) is concentrically arranged with the sleeve (33). The cutting motor (36) is installed on the sliding frame (31). The cutting wheel (37) is fixed at the output end of the cutting motor (36) and is used to directly cut the end face of the RTP tube. The second gear (35) is sleeved on the outer periphery of the cutting motor (36) and meshes with the first gear (32). The rotary table (310) is arranged between the second gear (35) and the cutting motor (36). The rotary table (310) drives the second gear (35) to revolve around the first gear (32), thereby driving the cutting wheel (37) to perform a rotating circumferential cutting motion to achieve full cutting of the end face of the RTP tube.

2. The device according to claim 1, characterized in that: The cutting wheel (37) is made of diamond material and is adapted to the composite cutting of the thermoplastic layer and continuous glass fiber winding layer of the RTP tube, ensuring that the cutting surface is flat and burr-free.

3. The device according to claim 1, characterized in that: The first gear (32) is an internal gear ring structure, and the second gear (35) is an external gear structure. The two mesh and drive to realize the revolution of the cutting wheel (37), and the transmission process is smooth and without jamming, ensuring the ring cutting accuracy.

4. The device according to claim 1, characterized in that: The sliding frame (31) has a sliding groove (311), and a sliding block (34) is slidably arranged in the sliding groove (311). The cutting motor (36) is fixedly installed on the sliding block (34). The sliding block (34) can slide smoothly along the sliding groove (311) to meet the cutting requirements of RTP pipes with different wall thicknesses.

5. The device according to claim 1, characterized in that: The sleeve (33) is fixed to the upper surface of the base plate (1) by the support frame (3). The bottom of the support frame (3) is provided with an electromagnetic telescopic structure and a transverse electromagnetic sliding component. The electromagnetic telescopic structure is used to adjust the height of the sleeve (33), and the transverse electromagnetic sliding component is used to adjust the left and right positions of the sleeve (33) to ensure that the cutting wheel (37) is precisely aligned with the end face of the RTP tube.

6. The device according to claim 1, characterized in that: The cutting mechanism employs a double-layer circumferential cutting process. The first circumferential cut quickly severs the outer plastic layer and most of the fiberglass layer of the RTP tube, while the second circumferential cut completely severs the remaining fiberglass layer, preventing fiberglass residue from affecting subsequent processing.

7. The device according to claim 1, characterized in that: The sleeve (33) is provided with a support column (38) inside. One end of the support column (38) passes through the sleeve (33) and is fixedly provided with a limiting piece (39). The support column (38) is used to insert into the RTP tube to provide support and prevent the inner wall of the tube from deforming during cutting and heating. The limiting piece (39) is used to axially position the RTP tube.

8. The device according to claim 1, characterized in that: A height adjustment mechanism is also provided on one side of the upper surface of the base plate (1). The height adjustment mechanism includes a first telescopic rod (2), a top frame (21), a ball head (22), a top plate (23), and a pipe rack (24). The pipe rack (24) is used to support the RTP pipe and cooperate with the cutting mechanism to complete precise cutting. The tube frame (24) is provided with a heating chamber opening (26), and a wind frame (27) is provided on one side of the heating chamber opening (26). The wind frame (27) has an air hole (28) on the outer ring and an air groove (29) on the inner ring. The air hole (28) connects the dust collection and hot air supply structure, which are used for dust collection during the cutting process and hot air treatment of the cut after cutting, respectively.

9. The device according to claim 1, characterized in that: The other end of the sleeve (33) is provided with an inner cavity (43), a heating coil (42) is installed on the inner wall of the inner cavity (43), and a second telescopic rod (4) is evenly arranged in the inner cavity (43). A pressure plate (41) is fixed at the top of the second telescopic rod (4) for hot pressing fusion of the sealing ring of the RTP tube end face after cutting.

10. The device according to claim 1, characterized in that: Two sets of first telescopic rods (2) are provided on one side of the upper surface of the base plate (1). A crossbar (53) is installed at the top of the first telescopic rod (2). A plastic mounting plate (5) is fixedly installed at the crossbar (53) at the top of the first telescopic rod (2) in front by a steel plate (52). A plastic frame (51) is installed on one side of the plastic mounting plate (5). The heating bracket (54) is fixedly installed at the top of the first telescopic rod (2) via a crossbar (53) and a connecting rod (56), and a heating plate (55) is installed on the heating bracket (54).

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