Automatic sealing device for continuous glass fiber winding pipe

Abstract

The application relates to the technical field of forming equipment of plastic state materials, in particular to an automatic sealing device for continuous glass fiber winding pipes, which comprises a rack, a rotary feeding mechanism forming a multi-station circulation, a detection assembly, a vibration excitation mechanism, a fixing assembly, a sealing forming assembly and a control unit. The rotary feeding mechanism is provided with a V-shaped supporting plate with a counterweight for supporting the pipe material. The detection assembly is arranged corresponding to a feeding detection station and is used for detecting the righting state and the bending degree of the pipe material. The vibration excitation mechanism can apply a periodic vibration force to the counterweight to assist the righting of the pipe material. The control unit is used for controlling the qualified pipe material to be locked by the fixing assembly at a forming station and then to be sealed by the sealing forming assembly; and the unqualified pipe material is automatically separated at a waste material removing station. Through the integration of the automatic assembly line and the intelligent online detection and screening, the automatic sealing of the pipe material is realized, the high-precision and high-efficiency production of the whole process is realized, and the product quality and the resource utilization rate are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of molding equipment for plastic materials, and more particularly to an automatic sealing device for continuous glass fiber wound tubes. Background Technology

[0002] As a high-performance composite material pipe, the end sealing of fiberglass spiral wound pipe is a crucial process to ensure the airtightness of the pipe connection. Currently, there are two common technical approaches in the industry, but neither can achieve truly fully automated sealing. The traditional manual method relies on manual operation to complete the feeding, centering, and flipping, which is not only inefficient but also poses safety risks. While existing improved solutions, such as the hot-melt sealing device disclosed in Chinese patent CN118514312A, have improved the sealing process by combining positioning clamps and molds, they are essentially still semi-fixed tooling, requiring manual positioning, clamping, and adjustment of the pipe. The entire sealing process cannot achieve automated continuous operation.

[0003] Therefore, in order to address the problem that existing technologies cannot achieve automated continuous operation, there is an urgent need to develop an intelligent device that can achieve unmanned operation of the entire process from automatic feeding to synchronous sealing at both ends, so as to overcome the shortcomings of existing technologies and meet the high-quality and high-efficiency production requirements of high-end composite material pipes. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an automatic sealing device for continuous fiberglass winding tubes, so as to solve the problem that the existing technology cannot achieve automated continuous operation.

[0005] For the purposes mentioned above, the rack;

[0006] A rotary feeding mechanism is installed on the frame and forms a circulating station including at least a feeding inspection station, a forming station and a waste removal station; the rotary feeding mechanism includes a V-shaped support plate for supporting the material and a counterweight block disposed at the bottom of the V-shaped support plate, the counterweight block causing the V-shaped support plate to open upward in a free state;

[0007] The detection component, which corresponds to the loading detection station, includes a centering mechanism for clamping and centering the pipe, a range sensor array arranged along the pipe axis, and a pressure sensing unit.

[0008] The vibration mechanism, which is set in accordance with the feeding and detection station, includes a periodic force generating device that can act on the counterweight;

[0009] The control unit is configured to: determine the alignment status of the pipe based on the distance data collected by the distance sensor array; if it is not aligned, control the vibration mechanism to apply a periodic vibration force to the counterweight to promote alignment; control the centering mechanism to clamp the aligned pipe, and determine whether the curvature is qualified based on the distance data after clamping using a fitting algorithm and output a mark; the mark is a status identifier in the control unit associated with the V-shaped pallet 305 station number where the pipe is located: qualified or unqualified.

[0010] The fixing component and the sealing forming component are respectively set in the forming station and are used to perform locking and sealing processing on qualified pipes according to the markings;

[0011] A waste rejection mechanism is provided corresponding to the waste rejection station and is used to separate unqualified pipes according to the markings.

[0012] Optionally, the rotary feeding mechanism further includes a fixed column that runs horizontally through the frame, a rotating seat mounted on both ends of the fixed column via bearings, a connecting plate arrayed on the rotating seat, and a connecting shaft mounted between the connecting plates at both ends; the V-shaped support plate is mounted on each end of the connecting shaft, and every two V-shaped support plates are set as a group on the same end of the connecting shaft, forming a fixed gap between the two groups of V-shaped support plates, and positioning holes are provided on the V-shaped support plate.

[0013] Optionally, the periodic force generating device of the excitation mechanism is an electromagnet; the excitation mechanism further includes a linear drive installed near the material feeding and detection station, and the electromagnet is installed at the execution end of the linear drive; the control unit is configured to: control the linear drive to move the electromagnet to the excitation position at a preset gap from the counterweight, and intermittently switch the electromagnet on and off to generate the periodic excitation force; when the detection component is detecting, control the linear drive to move the electromagnet to the locking position to lock the counterweight in the upright position.

[0014] Optionally, the centering mechanism of the detection assembly includes a detection seat mounted on the frame via a detection push rod, lead screw seats mounted at both ends of the detection seat, a centering lead screw mounted between the two lead screw seats and driven by a lead screw motor, two lead screw sliders adapted to be mounted on the centering lead screw, and a centering plate respectively connected to the two lead screw sliders and equipped with the pressure sensing unit; the distance sensor array is a plurality of laser displacement sensors arranged linearly at equal intervals along the axial direction of the pipe.

[0015] Optionally, the fixing component includes a liftable fixing base, a fixing V-shaped plate installed at both ends of the fixing base and whose shape is adapted to the fixing gap between the V-shaped support plates, and a positioning pin installed below the fixing base and adapted to the positioning hole on the V-shaped support plate.

[0016] Optionally, the sealing and forming assembly includes a support frame movably mounted on the frame and a cutting unit, a heating unit, and a forming unit mounted on the support frame and arranged sequentially along the moving direction; the heating unit is a heating tube assembly whose height can be adjusted by a heating lifting frame, the forming unit is a mold whose height can be adjusted by a forming lifting frame, and the cutting unit includes a cutting box, a cutter mounted on the top of the cutting box via a cutting lifting frame, and a support seat replaceably mounted inside the cutting box for supporting the end of the material.

[0017] Optionally, the cyclic station further includes a material unloading station; the material unloading station is provided with a material unloading drive mechanism, which is configured to drive the V-shaped pallet located at the station to rotate around its connecting shaft, so as to realize the tilting and unloading of the pipe.

[0018] Optionally, the waste rejection mechanism includes a feeding plate fixedly installed below the waste rejection station. The installation height of the feeding plate is configured such that when a V-shaped pallet carrying a pipe marked as defective rotates to the station, the feeding plate pushes the pipe off the V-shaped pallet through contact interference with the pipe.

[0019] Optionally, the control unit includes a programmable logic controller (PLC) and an industrial computer; the PLC is used to control the sequential operation of the rotary feeding mechanism, the vibration mechanism, the centering mechanism, the fixing component, and the sealing and forming component; the industrial computer is used to receive and process the data of the ranging sensor array, execute the alignment state judgment and curvature judgment algorithm, and send the judgment result to the PLC.

[0020] Optionally, the control unit is specifically configured to perform the following steps:

[0021] a) Based on the first set of distance data collected by the ranging sensor array when the pipe is not clamped, calculate the variance of the set of data, and determine whether the pipe is in a straightened state based on the comparison result of the variance and the first preset threshold.

[0022] b) If step a) determines that the alignment is not correct, then control the excitation mechanism to apply a periodic excitation force to the counterweight (306) through the periodic force generating device;

[0023] c) For a pipe in the alignment state, control the centering mechanism to clamp the pipe, and confirm that the clamping is in place based on the feedback from the pressure sensing unit.

[0024] d) Based on the second set of distance data collected by the distance sensor array after the pipe is clamped, a reference straight line is obtained by fitting with the least squares method, the deviation of each measurement point relative to the reference straight line is calculated, and the pipe curvature is determined to be qualified according to the comparison result of the maximum deviation value and the second preset threshold and a mark is output.

[0025] The beneficial effects of this invention are:

[0026] The invention achieves fully automated sealing: It integrates multiple processes such as automatic feeding, posture alignment, online detection, precise sealing, finished product unloading and waste removal into one unit. Through the rotary feeding mechanism, it connects each functional station, realizing continuous and unmanned operation from pipe loading to finished product output. It solves the technical problems of existing technologies that rely on manual or semi-automatic operation, poor process connection, and inability to achieve efficient automated sealing.

[0027] Significantly improved sealing quality and production efficiency: Through an integrated "vibration-assisted + active electromagnetic vibration" dual alignment mechanism and high-precision online detection, the system ensures that every pipe entering the sealing process meets the requirements for accurate posture and qualified curvature, fundamentally guaranteeing the forming quality and consistency of the seal. Simultaneously, the system automatically rejects defective products before sealing, avoiding unnecessary energy and material consumption, achieving the dual benefits of improving product yield and reducing production costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this invention 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an overall view of an automatic sealing device for continuous fiberglass winding tubes according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the feeding component of an automatic sealing device for continuous fiberglass winding tube according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the rotary feeding assembly of an automatic sealing device for continuous fiberglass winding tubes according to an embodiment of the present invention;

[0032] Figure 4 This is a partial structural diagram of the rotary feeding assembly of an automatic sealing device for continuous fiberglass winding tubes according to an embodiment of the present invention;

[0033] Figure 5This is a schematic diagram of the fixing components of an automatic sealing device for continuous fiberglass winding tube according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the detection component of an automatic sealing device for continuous fiberglass winding tube according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the sealing and forming component of an automatic sealing device for continuous fiberglass winding tubes according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the cutting box of an automatic sealing device for continuous fiberglass winding tube according to an embodiment of the present invention.

[0037] The diagram is marked as follows:

[0038] 101. Feeding assembly; 102. Inclined base; 103. Guardrail; 104. Push plate; 105. Baffle; 106. Feeding push rod; 107. Mounting plate; 201. Frame; 202. Top plate; 203. Fixed column; 204. Unloading plate; 301. Rotary feeding assembly; 302. Rotary seat; 303. Connecting plate; 304. Connecting shaft; 305. V-shaped support plate; 306. Counterweight; 307. Positioning hole; 308. Gear cover; 309. Connecting seat; 310. Linear drive component; 311. Contact plate; 312. Positioning sensor; 401. Detection assembly; 402. Detection seat; 403. Lead screw seat; 404. Detection push rod; 405. Centering lead screw; 406. Lead screw slider; 407. Lead screw motor Machine; 408, Centering plate; 409, Protective plate; 501, Fixing assembly; 502, Fixing seat; 503, Fixing push rod; 504, Fixing V-shaped plate; 505, Positioning pin; 601, Sealing forming assembly; 602, Guide column; 603, Moving sleeve; 604, Guide sleeve; 605, Bearing plate; 606, Guide plate; 607, Mold; 608, Forming lifting frame; 609, Forming plate; 610, Heating lifting frame; 611, Heating tube assembly; 612, Cutting box; 613, Insert seat; 614, Bearing seat; 615, Lifting plate; 616, Cutting lifting frame; 617, Guide plate; 618, Cutting blade; 619, Auxiliary guide column; 620, Auxiliary guide sleeve; 621, Guide connecting rod; 622, Moving push rod. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention 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.

[0041] This invention discloses an automatic sealing device for continuous fiberglass wound tubes, such as... Figures 1 to 8 As shown, it includes a frame 201, a rotary feeding assembly 301, a detection assembly 401, a fixing assembly 501, a sealing and forming assembly 601, and a feeding assembly 101.

[0042] The frame 201 is an integral support frame, with a top plate 202 installed on its top and a fixed column 203 installed horizontally through its middle. The rotary feeding assembly 301 is mounted on both ends of the fixed column 203 via bearings, forming a four-station rotary mechanism. The four stations are a feeding and inspection station, a forming station, a discharging station, and a waste removal station. The rotary feeding assembly 301 includes:

[0043] Rotary seat 302: It is mounted on both ends of the fixed column 203 by bearings, and driven gears are fitted at its ends.

[0044] Connecting plates 303: arranged in an array on the rotating base 302, preferably four.

[0045] Connecting shaft 304: installed between the connecting plates 303 at both ends.

[0046] V-shaped support plate 305: Two V-shaped support plates 305 are installed at each end of the connecting shaft 304, forming a fixed gap for positioning between the two V-shaped support plates 305. A counterweight block 306 is fixedly installed at the bottom of the V-shaped support plate 305, and the V-shaped opening of the V-shaped support plate 305 is always facing upward in the unconstrained state by utilizing the principle of gravitational torque. Positioning holes 307 are provided on the V-shaped support plate 305.

[0047] Drive system: includes a driven gear that meshes with a drive gear driven by a gear motor. The drive gear is mounted on the frame 201. The entire gear transmission pair is covered with a gear cover 308 to achieve safe rotation drive.

[0048] In some optional specific embodiments, such as Figure 4 As shown, the fixed column 203 is also equipped with a leveling control and unloading execution mechanism. Connecting seats 309 are installed at the positions of the fixed column 203 corresponding to the loading and unloading stations, respectively. A linear drive component 310 capable of linear reciprocating motion is installed on the connecting seat 309, and a contact plate 311 is connected to the end of the linear drive component 310. The contact plate 311 at the loading station is opposite to the counterweight 306 at the bottom of the V-shaped support plate 305, and an electromagnet is integrated on the contact plate 311. A ferromagnetic block is provided on the corresponding counterweight 306. The contact plate 311 at the unloading station is opposite to the side of the V-shaped support plate 305.

[0049] In some optional embodiments, a waste removal mechanism is provided directly below the fixed column 203, including a discharge plate 204 fixedly installed at a position corresponding to the waste removal station. Its height is precisely calculated so that when the V-shaped pallet 305 carrying the defective pipe rotates to this station, the discharge plate 204 pushes the pipe off the V-shaped pallet 305 through mechanical interference.

[0050] In some optional specific embodiments, such as Figure 2 As shown, the feeding assembly 101 is located on the side of the feeding inspection station and includes an inclined base 102 with a specific angle. This specific angle can be determined according to the outer diameter of the pipe, ensuring that the pipe can be laid flat on the inclined base 102. Protective railings 103 are provided around the base. At the lowest point of the inclined base 102, a pusher plate 104 is fitted and installed. The inclination of the pusher plate 104 is consistent with that of the base, and a baffle 105 extends downwards on the side closest to the material pile to prevent the pipe from slipping. The bottom of the pusher plate 104 is connected to the piston rod of the feeding push rod 106, and the cylinder of the feeding push rod 106 is fixed to the underside of the inclined base 102 by a mounting plate 107. Furthermore, to make the feeding more stable, the distance between the protective railings 103 on both sides of the feeding assembly 101 can be designed to adapt to the length of the pipe, reducing the initial center offset of the pipe.

[0051] In some optional specific embodiments, such as Figure 6 As shown, the detection component 401 is mounted on the top plate 202 via the detection push rod 404 and is precisely aligned with the material loading and detection station. It is designed to determine the alignment status and detect the axial curvature of the pipe before it enters the forming process. The alignment status refers to the pipe's outer surface being symmetrical with the contact points on both sides of the V-shaped support plate 305 under gravity, and its axis being approximately parallel to the preset detection reference direction.

[0052] The detection assembly 401 includes a mechanical alignment part: it includes a detection base 402, with lead screw bases 403 mounted at both ends. An alignment lead screw 405 is installed between the two lead screw bases 403, and the alignment lead screw 405 is driven by a lead screw motor 407. The lead screw motor 407 can be a Leadshine DM series stepper motor or a servo motor. Two lead screw sliders 406 are adapted to be mounted on the alignment lead screw 405, and each slider is connected to an alignment plate 408. When the lead screw motor 407 drives the alignment lead screw 405 to rotate, the two lead screw sliders 406 move towards or away from each other.

[0053] In some optional embodiments, a protective plate 409 is provided below the detection seat 402, opposite to the V-shaped support plate 305, to prevent the pipe from vibrating out under the excitation mode.

[0054] On the surface of the centering plate 408 that contacts the pipe, a contact plate 311 with a polyurethane buffer layer is installed. A strain gauge pressure sensor, such as the Hansen HX711 module, is installed between the contact plate 311 and the centering plate 408 to accurately sense and control the centering clamping force. At the bottom of the detection seat 402, multiple high-precision laser displacement sensors, such as the Keyence LK-G500 series with an accuracy of ±0.05mm, are arranged in a fixed-interval array along the axial direction of the pipe, forming a longitudinal detection matrix. In addition, a miniature photoelectric sensor, such as the Omron E3Z series, can be installed on the inner side of the centering plate 408 for coarse positioning of the pipe end.

[0055] Data processing and control module: A Siemens S7-1200 series PLC is used as the main controller, responsible for the sequential logic and motion control of all cylinders, motors, and electromagnets. Simultaneously, an embedded industrial computer, such as an Advantech ARK series PC, communicates with the PLC via industrial Ethernet, specifically responsible for processing the data acquired by the laser sensor array and executing the following core analysis algorithms:

[0056] Triggering and Vibration Stabilization: When a new pipe enters the loading and inspection station, and the system receives a signal that the previous pipe has completed the cutting process at the forming station, the PLC will wait for a short delay, such as 0.5 seconds. This delay is intended to utilize the vibration of the frame 201 generated by the cutting process to cause the new pipe to roll in the groove of the V-shaped support plate 305, and automatically tend to a stable and upright state under the action of the counterweight 306.

[0057] Initial alignment judgment: After the delay, the linear drive component 310 drives the contact plate 311 to the locked position to energize it, locking the counterweight 306 in a vertical position. The industrial control computer synchronously reads the distance values ​​of all laser sensors to obtain the dataset S=[s1,s2,...,sn]. Calculate the variance σ of this dataset. 2。Set a "摆正阈值" Tlevel, for example, corresponding to a fluctuation of 0.5 mm, and the specific value is determined according to the diameter of the pipe. If σ 2 < Tlevel, it is determined that the pipe has been basically摆正, and proceed to the next step; otherwise, it is determined that it is not摆正, and the PLC immediately triggers the vibration excitation mode.

[0058] Vibration excitation to摆正: When it is determined that it is not摆正, the PLC controls the linear drive 310 of the feeding station to act, and pushes the contact plate 311 with an electromagnet to the "vibration excitation position" about 2-3 mm away from the counterweight 306. Subsequently, the PLC controls the electromagnet to be intermittently powered on and off at a specific frequency, such as 5-10 Hz, and duty cycle. When powered on, the electromagnet attracts the iron counterweight 306; when powered off, the counterweight 306 swings back under the action of gravity. This periodic micro-vibration force will cause the V-shaped support plate 305 to swing slightly, thereby accelerating the rolling of the pipe in the V-shaped groove until it reaches a stable摆正 state under the action of gravity, at which time the counterweight 306 is vertically downward. After the vibration excitation lasts for a preset time, the system returns to step 2 to re-judge the摆正.

[0059] Precision detection of centering and curvature: For the pipe that has been摆正, the linear drive 310 drives the contact plate 311 to the locking position and powers it on to lock and fix the counterweight 306 in the vertical position. The driving distance of the linear drive 310 is determined by the position sensor 312 installed on the connecting seat 309 to detect the position of the contact plate 311. The PLC controls the centering mechanism to act, and the lead screw motor 407 drives the two centering plates 408 to move towards each other until the signals of the two pressure sensors both reach the preset clamping force value to ensure the centering of the pipe axis. Subsequently, the industrial control computer synchronously collects the distance values D = [d1, d2,..., dn] of all laser sensors again with high precision.

[0060] Data processing and judgment:

[0061] Preprocessing: Perform digital filtering on the collected distance data D, such as moving average filtering, to eliminate environmental noise and micro-vibration interference.

[0062] Fitting of the reference line: Use the least squares method to fit the filtered data into an optimal fitting straight line L: d = kx + b. This straight line represents the projection of the "actual axis" of the pipe on the current detection cross-section.

[0063] Calculation of curvature: Calculate the vertical distance deviation Δi = |di - (kxi + b)| from each measurement point i to the fitting straight line L.

[0064] Acceptance judgment: Find the maximum value Δmax among all deviations. Compare this Δmax with the preset curvature tolerance Tolbend. If Δmax ≤ Tolbend, the pipe is judged as "qualified"; if Δmax > Tolbend, it is judged as "curvature exceeds the standard, scrap". The judgment result is sent to the PLC in real time by the industrial control computer, and the judgment result includes the station identification.

[0065] In some alternative specific embodiments, such as Figure 5 As shown, the fixing component 501 is installed on the top plate 202, aligned with the forming station. It includes a fixing seat 502, which is connected to the top plate 202 via a fixing push rod 503. Fixing V-shaped plates 504 are mounted downwards at both ends of the fixing seat 502, their shape designed to precisely fit into the fixing gap between the two V-shaped support plates 305 in the rotary feeding component 301. A positioning pin 505, adapted to the positioning hole 307 on the V-shaped support plate 305, is also provided below the fixing seat 502. When the fixing push rod 503 drives the fixing seat 502 to descend, the fixing V-shaped plates 504 engage with the gap, and simultaneously the positioning pin 505 inserts into the positioning hole 307, thereby rigidly locking the pipe and the V-shaped support plate 305 together at the forming station.

[0066] In some optional specific embodiments, such as Figure 7 and Figure 8 As shown, the sealing and forming component 601 is the core module for performing end processing. It is installed on the frame 201 and can move along the axial direction of the pipe.

[0067] The sealing and forming assembly 601 includes a guide post 602 fixed to the frame 201, a movable sleeve 603 sleeved on the guide post 602, and a support plate 605 fixedly connected to the movable sleeve 603. Guide sleeves 604 are provided on both sides of the support plate 605. The guide plate 606 is fitted into the guide sleeve 604 and can be fixed in a preset position by locking screws to accommodate pipes of different lengths. A movable push rod 622 is connected to the rear of the support plate 605 to drive the entire assembly forward and backward. To enhance stability, an auxiliary guide post 619 is also connected between the frame 201 and the fixed post 203, on which an auxiliary guide sleeve 620 is sleeved, and connected to the movable sleeve 603 via a guide connecting rod 621.

[0068] The following components are installed sequentially on the guide plate 606, from the inside out, starting from the closest point to the frame 201:

[0069] Mold 607: Used to pressurize and form the heated tube end. It is mounted on the forming lifting frame 608 via the forming plate 609 and can be raised and lowered vertically to avoid obstacles during cutting and heating.

[0070] Heating tube assembly 611: It adopts high-efficiency heat sources such as infrared heating tubes and is installed through heating lifting frame 610. It can be raised and lowered vertically to avoid obstacles during cutting and heating.

[0071] The cutting box 612 contains an insertion seat 613 with an insertion slot. A support seat 614, adaptable to different pipe diameters, is replaceably installed in the slot. The support seat 614 has a slot for placing the pipe and a clearance slot for the cutter 618. A lifting plate 615 is mounted on the top of the cutting box 612 via a cutting lifting frame 616. A rotating cutter 618, driven by a cutter motor, is installed below the lifting plate 615. Waste material generated during cutting is discharged from a side outlet through a guide plate 617 installed between the insertion seat 613 and the rear wall of the box.

[0072] Working principle of the invention:

[0073] Initial feeding and preparation: The lifting plate 104 of the feeding assembly 101 rises under the push of the feeding push rod 106, smoothly feeding a tube onto the V-shaped tray 305 of the feeding inspection station. The rotary feeding assembly 301 rotates 90° under the drive of the gear motor, completing the station rotation: sending the new tube to the inspection station, sending the qualified product from the previous cycle to the forming station, sending the finished product to the unloading station, and sending the scrap (or empty space) to the rejection station.

[0074] Parallel processing and inspection:

[0075] At the forming station: the fixing component 501 descends and locks the tube. The sealing forming component 601 advances, sequentially completing the cutting and trimming, heating, and mold pressing forming processes. The vibration generated by the cutting process is transmitted to the feeding and inspection station through the rotary feeding component 301.

[0076] At the material loading and inspection station: after the new pipe is subjected to vibration, it tends to stabilize. The inspection component 401 then starts and performs alignment judgment according to the aforementioned logic; if necessary, it performs vibration alignment, centering, and bending detection. Finally, the "qualified" or "scrap" judgment result is sent to the PLC.

[0077] Decision-making and workstation flow: The PLC updates the status marker of the corresponding workstation pipe based on the detection results. After the forming workstation finishes processing, the fixing component 501 is released. The rotary feeding component 301 rotates 90° again.

[0078] The finished qualified products are transferred to the unloading station, where the linear drive 310 pushes the contact plate 311 to rotate the V-shaped pallet 305, and the pipe rolls down under the action of gravity, completing the automatic unloading.

[0079] The new pipes that have been marked as qualified are transferred to the forming station to await the next cycle of fixing and processing.

[0080] When a pipe marked as scrap is transferred to the forming station, the PLC will prevent the fixing component 501 and the sealing forming component 601 from performing any operation on it, allowing it to "idle" through.

[0081] The unloaded V-shaped pallet 305 returns to the loading station, ready to receive materials.

[0082] When the waste pipes that have been "idling" are transferred to the waste removal station, they are blocked and pushed by the fixed unloading plate 204 and fall off the V-shaped pallet 305, thus achieving automatic removal.

[0083] The next pipe from the waste pipe is directly vibrated and aligned at the loading and inspection station;

[0084] Cycle: The above process repeats continuously, forming a continuous production cycle. The core innovation of this device lies in combining physical vibration with active electromagnetic excitation, ensuring the reliability of the pipe's posture before inspection; through high-precision matrix online inspection, defective products are accurately identified and sorted before sealing; the V-shaped pallet 305 keeps the pipe vertically upward at all times, avoiding misalignment caused by pipe rolling during station transitions; at the same time, all mechanical structures and control logic are tightly coupled, realizing efficient and intelligent fully automated production.

[0085] 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 the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0086] This invention is 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 this invention should be included within the scope of protection of this invention.

Claims

1. An automatic sealing device for continuous fiberglass wound tubes, characterized in that, include: Rack (201); A rotary feeding mechanism is installed on the frame (201) and forms a circulating station including at least a feeding inspection station, a forming station and a waste removal station; the rotary feeding mechanism includes a V-shaped pallet (305) for supporting the pallet material and a counterweight (306) provided at the bottom of the V-shaped pallet (305), the counterweight (306) causing the V-shaped pallet (305) to open upward in a free state; The detection component (401), which corresponds to the loading detection station, includes a centering mechanism for clamping and centering the pipe, a range sensor array arranged along the pipe axis, and a pressure sensing unit. The vibration mechanism, which is set in accordance with the feeding and detection station, includes a periodic force generating device that can act on the counterweight (306); The control unit is configured to: determine the alignment status of the pipe based on the distance data collected by the distance sensor array; if it is not aligned, control the excitation mechanism to apply periodic excitation force to the counterweight (306) to promote its alignment; control the centering mechanism to clamp the aligned pipe, and determine whether the curvature is qualified based on the distance data after clamping by a fitting algorithm and output a mark. The fixing component (501) and the sealing forming component (601) are respectively set in the forming station and are used to perform locking and sealing processing on qualified pipes according to the markings; A waste rejection mechanism is provided corresponding to the waste rejection station and is used to separate unqualified pipes according to the markings. The periodic force generating device of the excitation mechanism is an electromagnet; the excitation mechanism also includes a linear drive (310) installed near the material feeding detection station, and the electromagnet is installed at the execution end of the linear drive (310); the control unit is configured to: control the linear drive (310) to move the electromagnet to the excitation position at a preset gap from the counterweight (306), and intermittently switch the electromagnet on and off to generate the periodic excitation force; when the detection component (401) detects, control the linear drive (310) to move the electromagnet to the locking position and lock the counterweight (306) in the upright position.

2. The automatic sealing device for continuous fiberglass winding tubes according to claim 1, characterized in that, The rotary feeding mechanism also includes a fixed column (203) that runs horizontally through the frame (201), a rotating seat (302) mounted on both ends of the fixed column (203) by bearings, a connecting plate (303) arranged in an array on the rotating seat (302), and a connecting shaft (304) installed between the connecting plates (303) at both ends; the V-shaped support plate (305) is installed on each end of the connecting shaft (304), and every two V-shaped support plates (305) are set as a group on the same end of the connecting shaft (304), and a fixed gap is formed between the two groups of V-shaped support plates (305), and a positioning hole (307) is provided on the V-shaped support plate (305).

3. The automatic sealing device for continuous fiberglass winding tubes according to claim 1, characterized in that, The centering mechanism of the detection component (401) includes a detection seat (402) mounted on the frame (201) via a detection push rod (404), a lead screw seat (403) mounted at both ends of the detection seat (402), a centering lead screw (405) mounted between the two lead screw seats (403) and driven by a lead screw motor (407), two lead screw sliders (406) adapted to be mounted on the centering lead screw (405), and a centering plate (408) respectively connected to the two lead screw sliders (406) and provided with the pressure sensing unit; the distance sensor array is a plurality of laser displacement sensors arranged in a straight line at equal intervals along the axial direction of the pipe.

4. An automatic sealing device for continuous fiberglass winding tubes according to claim 1 or 2, characterized in that, The fixing component (501) includes a liftable fixing base (502), a fixing V-shaped plate (504) installed at both ends of the fixing base (502) and whose shape is adapted to the fixing gap between the V-shaped support plate (305), and a positioning pin (505) installed below the fixing base (502) and adapted to the positioning hole (307) on the V-shaped support plate (305).

5. The automatic sealing device for continuous fiberglass winding tubes according to claim 1, characterized in that, The sealing and forming assembly (601) includes a support frame movably mounted on the frame (201) and a cutting unit, a heating unit, and a forming unit mounted on the support frame and arranged sequentially along the moving direction; the heating unit is a heating tube assembly (611) whose height can be adjusted by a heating lifting frame (610); the forming unit is a mold (607) whose height can be adjusted by a forming lifting frame (608); the cutting unit includes a cutting box (612), a cutter (618) mounted on the top of the cutting box (612) by a cutting lifting frame (616), and a support seat (614) replaceably mounted in the cutting box (612) for supporting the end of the material.

6. An automatic sealing device for continuous fiberglass winding tubes according to claim 1 or 2, characterized in that, The cycle station also includes a material unloading station; the material unloading station is provided with a material unloading drive mechanism, which is configured to drive the V-shaped pallet (305) located at the station to rotate around its connecting shaft (304) to realize the tilting and unloading of the pipe.

7. An automatic sealing device for continuous fiberglass winding tubes according to claim 1 or 2, characterized in that, The waste rejection mechanism includes a discharge plate (204) fixedly installed below the waste rejection station. The installation height of the discharge plate (204) is configured such that when a V-shaped pallet (305) carrying a pipe marked as defective rotates to the station, the discharge plate (204) pushes the pipe off the V-shaped pallet (305) through contact interference with the pipe.

8. The automatic sealing device for continuous fiberglass winding tubes according to claim 1, characterized in that, The control unit includes a programmable logic controller (PLC) and an industrial computer. The PLC is used to control the sequential operation of the rotary feeding mechanism, the vibration mechanism, the centering mechanism, the fixing component (501), and the sealing and forming component (601). The industrial computer is used to receive and process the data of the ranging sensor array, execute the alignment state judgment and curvature judgment algorithm, and send the judgment result to the PLC.

9. The automatic sealing device for continuous fiberglass winding tubes according to claim 1, characterized in that, The control unit is specifically configured to perform the following steps: a) Based on the first set of distance data collected by the ranging sensor array when the pipe is not clamped, calculate the variance of the set of data, and determine whether the pipe is in a straightened state based on the comparison result of the variance and the first preset threshold. b) If step a) determines that the alignment is not correct, then control the excitation mechanism to apply a periodic excitation force to the counterweight (306) through the periodic force generating device; c) For a pipe in the alignment state, control the centering mechanism to clamp the pipe, and confirm that the clamping is in place based on the feedback from the pressure sensing unit. d) Based on the second set of distance data collected by the distance sensor array after the pipe is clamped, a reference straight line is obtained by fitting with the least squares method, the deviation of each measurement point relative to the reference straight line is calculated, and the pipe curvature is determined to be qualified according to the comparison result of the maximum deviation value and the second preset threshold and a mark is output.

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