Efficient photocuring device for pultrusion

Abstract

The invention relates to the technical field of composite material processing equipment, in particular to an efficient photocuring device for pultrusion, which is used for scraping glue on fiber bundles before entering a UV (ultraviolet) curing machine through a glue dipping device, and comprises a support panel and at least one scraper arranged on the support panel, the scraping plate is used for scraping redundant resin on the surface of the fiber bundle; a drainage channel is formed in the supporting panel, and resin obtained after the fiber bundles are scraped by the scraping plate enters the drainage channel; the efficient light curing device further comprises a conveying pump used for conveying resin in the drainage channel to flow back to a resin box of the gum dipping device. Through the dynamic adaptive design of the rotary multi-specification scraping plate and the elastic glue scraping ring, rapid remodeling of fiber bundles with different diameters and accurate control over surface resin are achieved, and the core problems that an existing fixed glue scraping structure cannot adapt to the diameters of the fiber bundles, the multi-specification production remodeling efficiency is low, and the equipment utilization rate is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material processing equipment, and more particularly to an efficient light-curing device for pultrusion molding. Background Art

[0002] As the core process for continuously producing fiber-reinforced composites, pultrusion molding prepares high-precision profiles through processes such as fiber impregnation, curing, and traction, and is widely used in fields such as wind turbine blades and aerospace. Traditional thermosetting pultrusion relies on high-temperature mold curing, which has defects such as low production speed, easy mold blockage, and complex surface treatment. With the development of light-curing technology, using ultraviolet (UV) light to initiate rapid cross-linking of resins can achieve a pultrusion speed increase of more than 10 times, becoming a key direction for cost reduction and efficiency improvement; Chinese Patent: CN113650324B discloses a light-curing pultrusion system device that achieves rapid curing through a UV curing device. However, there are still core problems unresolved in actual applications. Specifically, the resin distribution on the surface of the fiber bundle after impregnation is uneven. Existing resin scraping structures (such as fixed-aperture resin scraping plates) cannot adapt to changes in the diameter of the fiber bundle. A single-specification resin scraping component needs to be replaced during machine downtime, which cannot meet the production requirements of small batches of multiple varieties. The mold change time is more than 30 minutes, and the equipment utilization rate is low; Therefore, there is an urgent need to propose an efficient light-curing device for pultrusion molding to solve the problems that the existing fixed resin scraping structure cannot adapt to changes in the diameter of the fiber bundle, the mold change efficiency for multi-specification production is low, and the equipment utilization rate is low. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to propose an efficient light-curing device for pultrusion molding, so as to achieve rapid adaptation of the resin scraping device to different fiber bundles, efficient resin recovery, and precise coordination with the curing device during the efficient production of light-curing pultrusion.

[0004] Based on the above purpose, the present invention provides an efficient light-curing device for pultrusion molding, which is used to scrape the resin on the fiber bundle before it enters the UV curing machine through an impregnation device. It includes a support panel and at least one scraping plate arranged on the support panel. The scraping plate is used to scrape off the excess resin on the surface of the fiber bundle; A drainage channel is provided on the support panel, and the resin scraped off by the scraping plate from the fiber bundle will enter the drainage channel; The efficient light-curing device further includes a transfer pump for transferring the resin in the drainage channel back to the resin tank of the impregnation device.

[0005] Preferably, wire passing holes for resin scraping are distributed on the scraping plate, and the diameters of the wire passing holes of each scraping plate distributed on the support panel are different.

[0006] Preferably, mounting grooves corresponding to the number of scraping plates are arranged around the support panel; The scraping plate includes a frame and a panel arranged inside the frame, and the panel is fixed to the frame through fastening pieces; The wire passing holes are distributed on the panel, and rubber rings are correspondingly arranged in the wire passing holes; The frame is inserted into the mounting groove through a sliding groove, and a fastening plate corresponding to the mounting groove is arranged on the support panel. The frame is fixed in the mounting groove through the fastening plate, and rubber sheets are arranged on the inner wall of the fastening plate.

[0007] Preferably, a support pipe and a fixed seat are arranged on one side of the support panel. A convex ring is formed on one side of the support panel, and the convex ring is rotatably connected to the support pipe through a bearing; The support pipe is fixedly installed on the fixed seat, and a rotary driver is arranged on the fixed seat; The rotary driver is in transmission connection with the convex ring and is used to control the rotation of the support panel.

[0008] Preferably, the drainage channel includes branch channels corresponding to the number of scraping plates and a central hole at the center of the support panel, and the branch channels are communicated with the central hole; The inside of the support pipe is a hollow structure. The support pipe has a liquid inlet and a liquid outlet which are vertically distributed. The liquid inlet of the support pipe is communicated with the central hole, and the liquid outlet of the support pipe is connected with a delivery pump through a pipeline; An inclined flow channel is formed on one side of the frame facing the dipping device and is used to guide the resin into the branch channels; The high-efficiency light-curing device further includes a blocking mechanism. A support frame is arranged at one end of the support pipe away from the liquid inlet, and the blocking mechanism is arranged on the support frame; The position of the scraping plate above the support panel perpendicular to it is the glue scraping station. The blocking mechanism includes a blocking plate, and the blocking mechanism is used to drive the blocking plate to disconnect the communication of the branch channels corresponding to the scraping plates not in the glue scraping station, so as to prevent the resin in the central hole from flowing into the branch channels corresponding to the scraping plates not in the glue scraping station.

[0009] Preferably, the blocking mechanism further includes a connecting rod and a first cylinder, and the first cylinder is arranged on the support frame; A first sealing ring is arranged on the inner surface of the blocking plate and is used to isolate the central hole from the outside of the support panel; A slotted opening is formed at the connection of the branch channel and the central hole. Convex blocks corresponding to the scraping plates in the glue scraping station are formed on the first sealing ring and are used to be inserted into the slotted opening to disconnect the communication of the corresponding branch channel and the central hole; One end of the support frame close to the support tube is the left end plate, and the other end far away is the right end plate. The connecting rod is slidably arranged on the right end plate. One end of the connecting rod sequentially penetrates through the end face of the support tube and is connected to the inner surface of the sealing plate, and the other end of the connecting rod is connected to the piston rod of the first cylinder.

[0010] Preferably, the high-efficiency light-curing device further includes an annular plate and a displacement driving mechanism. The annular plate is sleeved on the connecting rod and is slidably and sealingly connected thereto. A second sealing ring is provided on the outer edge surface of the annular plate.

[0011] A sleeve is provided on the side wall of the annular plate. The sleeve is sleeved on the connecting rod and sequentially penetrates through the outer end face of the support tube and the left end plate of the support frame and is in transmission connection with the position driving mechanism. The displacement driving mechanism is used to control the annular plate to move along the axis direction of the central hole.

[0012] Preferably, the displacement driving mechanism includes a slide rail frame and a sliding seat. The slide rail frame is arranged on the support frame. The sliding seat is slidably arranged on the slide rail frame and is connected to the end of the sleeve. A threaded rod is rotatably provided on the slide rail frame. The threaded rod is threadedly connected to the sliding seat through a nut. A driving motor is provided on the slide rail frame. The driving motor is connected to the threaded rod.

[0013] Preferably, the high-efficiency light-curing device further includes a support plate and a second cylinder. The second cylinder is arranged on the UV curing machine. The support plate is arranged on the piston rod of the second cylinder. Heating wires are provided on the surface of the support plate. A heating groove corresponding to the branch channel is formed by inward depression on the side wall of the support panel. The second cylinder is used to drive the support plate to be embedded in the heating groove of the glue scraping station, and the branch channel is heated by the heating wires.

[0014] Preferably, silica gel one-way valves are arranged around the annular plate. The opening direction of the silica gel one-way valves faces the outer end face of the support tube.

[0015] Advantages of the present invention: 1. Through the dynamic adaptation design of the rotary multi-specification scraper and the elastic glue scraping ring, the present invention realizes the rapid change of different diameter fiber bundles (Φ2-Φ15mm) (change time ≤ 1 minute) and the precise control of the surface resin (resin content fluctuation ±5%), and solves the core problems of the existing fixed glue scraping structure that cannot adapt to the fiber bundle diameter, low efficiency of multi-specification production change and low equipment utilization rate.

[0016] 2. By means of a sealed drainage channel, a dynamic plugging mechanism, a ring plate pressurization design, and the cooperation of a heating groove and a heating wire, the problem of resin solidification and blockage is solved, enabling the equipment to operate continuously without interruption (previously, it was necessary to stop the machine for cleaning daily, but now the maintenance cycle has been extended to once a week). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a front view of the present invention; Figure 3 is a three-dimensional exploded structural schematic diagram of the support panel and the scraper of the present invention; Figure 4 is a three-dimensional exploded structural schematic diagram of the scraper of the present invention; Figure 5 is a partial structural schematic diagram of the present invention; Figure 6 is an internal structural schematic diagram of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the plugging plate of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the support panel, the support tube, the plugging plate and the ring plate of the present invention; Figure 9 is Figure 2 an enlarged view of part A of Figure 10 is a three-dimensional structural schematic diagram of the support panel mounting groove and the support plate of the present invention; The reference numerals in the figures are: 1 - support panel; 11 - mounting groove; 111 - fastening plate; 112 - rubber sheet; 12 - convex ring; 13 - branch channel; 14 - central hole; 2 - scraper; 21 - frame; 211 - oblique flow channel; 22 - panel; 23 - fastening piece; 24 - rubber ring; 3 - delivery pump; 4 - support tube; 41 - fixed seat; 411 - rotary drive; 42 - support frame; 5 - plugging mechanism; 51 - plugging plate; 52 - first sealing ring; 521 - convex block; 53 - connecting rod; 54 - first cylinder; 6 - ring plate; 61 - second sealing ring; 62 - sleeve; 63 - silicone one-way valve; 7 - displacement drive mechanism; 71 - slide rail frame; 72 - sliding seat; 73 - threaded rod; 74 - drive motor; 8 - support plate; 81 - second cylinder; 82 - heating wire; 9 - UV curing machine. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0021] As Figure 1 and Figure 2 shown, an efficient photocuring device for pultrusion: The device body includes a support panel 1 and at least one squeegee 2; Support panel 1: As a bearing foundation, its surface is flat and has high strength, and is used for installing the squeegee 2 and constructing a drainage channel. Its material is preferably aluminum alloy, and its surface is anodized to resist resin corrosion.

[0022] Squeegee 2: It is arranged on the support panel 1, and the number is at least one (preferably 4 are distributed around), and the wire passing hole diameters of each squeegee 2 are different (such as 5mm, 8mm, 10mm, 12mm), and are used to adapt to fiber bundles of different thicknesses. The edges of the wire passing holes are smooth to avoid scratching the fibers.

[0023] Drainage system, as Figure 1 and Figure 3 shown: A drainage channel is opened inside the support panel 1, which includes branch channels 13 corresponding to the number of squeegees 2 and a central hole 14 at the axis of the panel 22. One end of the branch channel 13 communicates with the inclined flow channel 211 below the wire passing hole of the squeegee 2, and the other end converges to the central hole 14 to form a resin diversion path.

[0024] Delivery pump 3: It is connected to the central hole 14 of the support panel 1 through a pipeline, and is used to transport the resin in the drainage channel back to the resin tank of the impregnating device. The delivery pump 3 uses a gear pump or a diaphragm pump that resists resin corrosion to ensure stable reflux.

[0025] Scraper 2 structure, such as Figure 3 and Figure 4 As shown: Each scraper 2 includes a frame 21 and a panel 22 disposed in the frame 21. The panel 22 is fixed to the frame 21 by a fastening sheet 23 (such as a bolt or a buckle) to facilitate disassembly and replacement.

[0026] The wire holes are distributed in the center of the panel 22, and a rubber ring 24 (such as fluororubber material, Shore hardness 70-80) is embedded in the hole. The inner diameter of the rubber ring 24 is slightly smaller than the diameter of the fiber bundle. The rubber ring 24 fits the surface of the fiber bundle through elastic deformation to achieve flexible scraping.

[0027] The supporting panel 1 is surrounded by mounting grooves 11 corresponding to the number of scrapers 2, and the groove body is a rectangular or T-shaped structure, adapted to the sliding groove of the frame 21 of the scraper 2. The frame 21 is inserted into the mounting groove 11 through the sliding groove, and is pressed and fixed by the fastening plate 111 (arranged outside the mounting groove 11).

[0028] A rubber sheet 112 (1-2 mm thick) is pasted on the inner wall of the fastening plate 111 to fill the gap between the frame 21 and the mounting groove 11, enhance the sealing performance and buffer the vibration, and ensure that the scraper 2 is stable and does not move.

[0029] like Figure 5 As shown, the switching of scraping stations is achieved by the following methods: A support tube 4 and a fixing seat 41 are provided on one side of the support panel 1 . A convex ring 12 is formed on one side of the support panel 1 . The convex ring 12 is rotatably connected to the support tube 4 through a bearing, allowing the support panel 1 to rotate around the axis of the center hole 14 .

[0030] A rotation driver 411 (such as a servo motor or a stepper motor) is installed on the fixed seat 41, which is connected to the convex ring 12 through gears or synchronous belts. In this solution, a synchronous belt is selected for transmission connection but is not limited to this. The support panel 1 is controlled to rotate at a speed of 5-15rpm to achieve the station switching of the scraper 2 (the switching angle matches the number of scrapers 2, such as when there are 4 scrapers 2, each rotation is 90°).

[0031] Drainage channel layout, such as Figure 3 , Figure 5 and Figure 6 As shown: The branch channels 13 are radially distributed with the central hole 14 of the support panel 1 as the center. Each branch channel 13 is connected to the oblique flow channel 211 of the corresponding scraper 2. The oblique flow channel 211 is inclined 15°-30° toward the central hole 14 to guide the resin to flow into the branch channel 13 by gravity.

[0032] The support tube 4 is a hollow structure, and has a vertically distributed liquid inlet and liquid outlet: the liquid inlet is connected to the central hole 14, and the liquid outlet is connected to the delivery pump 3 through a pipeline to form a resin outflow path.

[0033] Resin flow control and sealing, such as Figures 6 to 8 As shown: A support frame 42 is provided at one end of the support tube 4 away from the liquid inlet, on which a blocking mechanism 5 is installed, comprising a blocking plate 51, a connecting rod 53 and a first cylinder 54: The sealing plate 51 is located at the top of the central hole 14 , and an annular first sealing ring 52 is provided on the inner surface thereof for isolating the central hole 14 from the external space of the supporting panel 1 .

[0034] A groove is formed at the connection between each branch channel 13 and the center hole 14, and a protrusion 521 corresponding to the scraper 2 at the scraping station is formed on the first sealing ring 52, which is used to be inserted into the groove to disconnect the corresponding branch channel 13 and the center hole 14 (the number of protrusions 521 is one less than the number of scrapers 2). When a scraper 2 is in the scraping station, the protrusion 521 is inserted into the groove of the non-working station to disconnect the non-working branch channel 13 from the center hole 14 to prevent resin from flowing in.

[0035] The first cylinder 54 drives the connecting rod 53 to reciprocate, driving the blocking plate 51 to move along the axis of the central hole 14 to achieve sealing and conduction switching of the slot.

[0036] Booster systems, such as Figures 6 to 8 As shown: The ring plate 6 is sleeved on the connecting rod 53 and is slidably sealed with the inner wall of the support tube 4 . A second sealing ring 61 is provided on the outer edge surface to ensure the sealing performance of the ring plate 6 when it moves.

[0037] The side wall of the ring plate 6 is connected to the sleeve 62, which penetrates the outer end surface of the support tube 4 and the support frame 42, and is connected to the displacement drive mechanism 7 (including the slide rail frame 71, the sliding seat 72, the threaded rod 73 and the driving motor 74). The driving motor 74 drives the sliding seat 72 to move along the slide rail frame 71 through the threaded rod 73, and then controls the ring plate 6 to reciprocate along the axis direction of the center hole 14, squeezes the resin in the center hole 14, cooperates with the silicone one-way valve 63 on the ring plate 6 (the opening faces the liquid outlet of the support tube 4), and flows back to the resin box through the liquid outlet and the delivery pump 3, thereby increasing the resin discharge rate.

[0038] Anti-freezing heating module, such as Figure 9 and Figure 10 As shown: The side wall of the supporting panel 1 is recessed inward to form a heating groove corresponding to the branch channel 13 . The groove body has a depth of 3-5 mm and a width matching that of the branch channel 13 .

[0039] A second cylinder 81 is installed on the UV curing machine 9, and its piston rod is connected to the mounting plate 8. A heating wire 82 (such as a nickel-chromium alloy wire with a power of 50-100W) is laid on the surface of the mounting plate 8. When the squeegee 2 switches to the working station, the second cylinder 81 drives the mounting plate 8 to be inserted into the heating groove corresponding to this station, and the heating wire 82 heats the branch channel 13, and the temperature is controlled at 60-80 °C (set according to the resin type) to prevent the resin from solidifying due to temperature drop.

[0040] Production preparation stage: According to the diameter of the fiber bundle to be processed, the support panel 1 is adjusted by rotating the drive 411 so that the squeegee 2 of the corresponding specification is aligned with the fiber bundle path; Start the heating system, and the heating wire 82 heats up the branch channel 13 corresponding to the current working squeegee 2, and maintains the temperature within the resin process requirement range (such as setting 70 °C for UV resin); Turn on the transfer pump 3 to establish a circulation loop of the resin from the branch channel 13 of the squeegee 2 to the resin tank of the impregnating device, and ensure that there is no air residue in the pipeline.

[0041] Gluing and recycling stage: The impregnated fiber bundle passes through the wire passing hole of the squeegee 2, and the elastic rubber ring 24 scrapes off the excess resin on the surface by slight extrusion, and the resin flows along the inclined flow channel 211 of the squeegee 2 into the lower branch channel 13; The resin in the branch channel 13 flows towards the central hole 14, and the displacement drive mechanism 7 controls the ring plate 6 to move towards the support tube 4, squeezing the resin in the central hole 14, and cooperating with the one-way conduction function of the silica gel one-way valve 63, quickly pressing the resin into the support tube 4, and flowing back to the resin tank through the transfer pump 3 for filtration and reuse.

[0042] Specification switching stage: When it is necessary to change the fiber bundle specification, the rotating drive 411 drives the support panel 1 to rotate, so that the target squeegee 2 is turned to the working position; At the same time, the cylinder of the blocking mechanism 5 acts, the blocking plate 51 moves, cutting off the connection between the original working squeegee 2 branch channel 13 and the central hole 14, ensuring that the resin only flows into from the branch channel 13 of the current working squeegee 2; The displacement drive mechanism 7 controls the ring plate 6 to reciprocate 2-3 times to remove the residual resin in the central hole 14, avoiding resin mixing when switching between different specification squeegees 2.

[0043] Anti-solidification maintenance stage: The temperature sensor (not shown in the figure) monitors the temperature of the branch channel 13 in real time. When it detects that the temperature is lower than the set threshold (such as 65 °C), the heating system automatically increases the power, and the cylinder drives the mounting plate 8 to closely fit the heating groove to improve the heating efficiency; After production is completed, the transfer pump 3 continues to run for 5 - 10 minutes to return all the residual resin in the pipeline back to the resin tank. The ring plate 6 moves to the extreme position to ensure that there is no resin retention in the central hole 14 and the branch channels 13, preventing solidification and blockage after shutdown.

[0044] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is exemplary only and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0045] The present 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 the present invention shall be included within the protection scope of the present invention.

Claims

1. An efficient light curing device for pultrusion, used for scraping glue on the fiber bundle before it enters the UV curing machine after passing through the dipping device, characterized in that: It comprises a support panel and at least one scraper arranged on the support panel, and the scraper is used to scrape off excess resin on the surface of the fiber bundle; The support panel is provided with a drainage channel, and the resin in the fiber bundle after being scraped off by the scraper will enter the drainage channel; The high-efficiency light-curing device also includes a delivery pump for delivering the resin in the drainage channel to flow back to the resin box of the dipping device.

2. The high-efficiency light-curing device for pultrusion molding according to claim 1, characterized in that: The scraper is provided with wire holes for scraping glue, and the diameters of the wire holes of each scraper distributed on the supporting panel are different.

3. The high-efficiency light-curing device for pultrusion molding according to claim 2, characterized in that: The support panel is surrounded by mounting grooves corresponding to the number of scrapers; The scraper comprises a frame and a panel arranged in the frame, and the panel is fixed to the frame by a fastening sheet; The wire holes are distributed on the panel, and rubber rings are correspondingly arranged in the wire holes; The frame is inserted into the installation groove through the slide groove, and a fastening plate corresponding to the installation groove is provided on the support panel. The frame is fixed in the installation groove through the fastening plate, and a rubber sheet is provided on the inner wall of the fastening plate.

4. The high-efficiency light-curing device for pultrusion molding according to claim 3, characterized in that: A support tube and a fixing seat are provided on one side of the support panel, a convex ring is formed on one side of the support panel, and the convex ring is rotatably connected to the support tube through a bearing; The support tube is fixedly mounted on a fixing seat, and a rotation driver is provided on the fixing seat; The rotary driver is drivingly connected to the convex ring and is used to control the rotation of the supporting panel.

5. The high-efficiency light-curing device for pultrusion molding according to claim 4, characterized in that: The drainage channel includes branch channels corresponding to the number of scrapers and a central hole located at the axis of the support panel, and the branch channels are connected to the central hole; The support tube has a hollow structure inside and has a liquid inlet and a liquid outlet that are vertically distributed. The liquid inlet of the support tube is connected to the central hole, and the liquid outlet of the support tube is connected to the delivery pump through a pipeline. The frame is provided with an oblique flow channel on one side facing the resin dipping device, for guiding the resin into the branch flow channel; The high-efficiency light curing device also includes a blocking mechanism, a support frame is provided at one end of the support tube away from the liquid inlet, and the blocking mechanism is provided on the support frame; The scraper position perpendicular to the support panel is the scraping station. The sealing mechanism includes a sealing plate. The sealing mechanism is used to drive the sealing plate to disconnect the branch channels corresponding to the scrapers that are not in the scraping station, so as to prevent the resin in the center hole from flowing into the branch channels corresponding to the scrapers that are not in the scraping station.

6. The high-efficiency light-curing device for pultrusion molding according to claim 5, characterized in that: The blocking mechanism also includes a connecting rod and a first cylinder, wherein the first cylinder is arranged on the support frame; The inner surface of the blocking plate is provided with a first sealing ring for isolating the central hole from the outside of the supporting panel; A groove is formed at the connection between the branch channel and the central hole, and a convex block corresponding to the scraper of the scraping station is formed on the first sealing ring, which is used to be inserted into the groove to disconnect the corresponding branch channel from the central hole; The end of the support frame close to the support tube is the left end plate, and the end away from the support tube is the right end plate. The connecting rod is slidably arranged on the right end plate. One end of the connecting rod passes through the end surface of the support tube and is connected to the inner surface of the sealing plate in sequence, and the other end of the connecting rod is connected to the piston rod of the first cylinder.

7. The high-efficiency light-curing device for pultrusion molding according to claim 6, characterized in that: The high-efficiency light curing device also includes a ring plate and a displacement driving mechanism, wherein the ring plate is sleeved on the connecting rod and is slidably and sealingly connected thereto, and a second sealing ring is provided on the outer edge surface of the ring plate; The side wall of the ring plate is provided with a sleeve, which is sleeved on the connecting rod and sequentially penetrates the outer end surface of the support tube and the left end plate of the support frame and is transmission-connected to the position driving mechanism. The displacement driving mechanism is used to control the movement of the ring plate along the axis direction of the center hole.

8. The high-efficiency light-curing device for pultrusion molding according to claim 7, characterized in that: The displacement driving mechanism comprises a slide rail frame and a sliding seat, wherein the slide rail frame is arranged on the support frame, the sliding seat is slidably arranged on the slide rail frame, and the sliding seat is connected to the end of the sleeve; A threaded rod is rotatably provided on the slide rail frame, and the threaded rod is threadedly connected to the slide seat through a nut; The slide rail frame is provided with a driving motor, and the driving motor is connected to the threaded rod.

9. The high-efficiency light-curing device for pultrusion molding according to claim 5, characterized in that: The high-efficiency light curing device also includes a frame plate and a second cylinder; The second cylinder is arranged on the UV curing machine, and the frame plate is arranged on the piston rod of the second cylinder; The surface of the frame plate is provided with a heating wire. The side wall of the support panel is recessed inward to form a heating groove corresponding to the branch channel. The second cylinder is used to drive the frame plate to embed into the heating groove of the scraping station to heat the branch channel through the heating wire.

10. The high-efficiency light-curing device for pultrusion molding according to claim 7, characterized in that: A silicone one-way valve is disposed around the ring plate, and the opening direction of the silicone one-way valve faces the outer end surface of the support tube.

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