Composite material component connecting method and equipment

Abstract

The invention discloses a composite material component connection method and equipment, which mainly fills a narrow slit connection area through glue injection, so that not only is the contact area between composite material components increased, but also the uneven narrow slit connection area is filled; the composite material components are connected in the mode of laying the fiber cloth, the sectional type connecting area can be effectively adapted, and high-strength reliable connection of the ultra-large composite material components is achieved. According to the main technical scheme, the composite material component connecting method comprises the steps that a detecting piece detects the three-dimensional shapes of a narrow seam connecting area and a step connecting area; glue is injected into the narrow seam connecting area; and slicing the three-dimensional appearance of the stepped connection area, and laying fiber cloth on the stepped connection area layer by layer in sequence. The method is mainly used for connecting composite material components.

Description

Technical Field

[0001] The present invention relates to the technical field of composite materials, and in particular to a method and equipment for connecting composite material components. Background Art

[0002] Carbon fiber composites are widely used in the aerospace field due to their excellent mechanical properties, such as low density, high strength, high rigidity, and fatigue resistance. However, oversized carbon fiber composite components, such as aircraft cabins and rocket sections, cannot be manufactured in one go and must be manufactured in parts and then connected again. Traditional connection methods include riveting or threading. To enhance the mechanical properties of the punched area, a metal interlayer needs to be added to the connection. However, this method not only increases the dead weight of the metal part of the connection structure, but also damages the carbon fiber structure in the punched area to a certain extent, affecting its mechanical properties.

[0003] Chinese invention patent CN112277337A discloses a laser welding method for segmented composite shells of solid rocket motors based on a wrapped yarn. This method uses a single-direction composite yarn wrapped around the welded area before curing. Because the yarn is wrapped in a single direction, this method is only suitable for closed, continuous joints and is less applicable to non-closed or non-continuous joints. Furthermore, the yarn is wrapped in a single direction, making it difficult to adapt to multi-directional, combined stresses.

[0004] Chinese invention patent CN108819292A discloses an automatic thermoplastic composite material placement device and method. This method indirectly controls the roller's downforce by adjusting the pressure of two cylinders, requiring complex control logic. Furthermore, the use of rigid rollers is only suitable for narrow fiber sheet placement. When placing large areas of fiber sheeting, unevenness in the fiber layout can easily cause localized overpressure or underpressure, requiring further improvement in process stability. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides a composite material component connection method and device, which are mainly used to solve the problem of reliable connection of composite material components.

[0006] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0007] In one aspect, the present application provides a composite component connection device, comprising:

[0008] A motion actuator (100), a detection member (200), a hot melt injection assembly (300), a hot pressing flexible roller (400), a temperature control assembly (500) and a feeding roller (600);

[0009] The motion actuator (100) is used to connect and move the detection member (200), the hot melt injection assembly (300), the hot pressing flexible roller (400), the temperature control assembly (500) and the feeding roller (600);

[0010] The detection member (200) is used to obtain the three-dimensional morphology of the narrow gap connection area (01) and the step connection area (02) between the composite material components (20);

[0011] The hot melt injection assembly (300) is at least used for injecting glue (30) into the narrow slit connection area (01);

[0012] The feeding roller (600) is used for connecting and supplying the fiber cloth (10) to the bottom surface of the step groove of the step connection area (02);

[0013] The temperature control component (500) is used to supply heat to the fiber cloth (10), and the force-applying roller (410) presses the fiber cloth (10) toward the narrow slit connection area (01) so that the fiber cloth (10) is bonded to the stepped connection area (02).

[0014] The step connection area (02) includes a plurality of step grooves, and the widths of different step grooves are different;

[0015] The hot pressing flexible roller (400) comprises an adjusting component and a force-applying roller (410), wherein the adjusting component is connected to the force-applying roller (410), and the adjusting component is used to adjust the width of the force-applying roller (410) so that at least a portion of the structure of the force-applying roller (410) is embedded in different step grooves of the step connection area (02);

[0016] The adjustment component is used to adjust the pressure of the force-applying roller (410).

[0017] The regulating assembly includes a piston rod (420), a hollow shaft (430), a distance regulating device (440), an extrusion plate (450) and a second pressure regulator (460);

[0018] The force roller (410) is a flexible airbag. The hollow shaft (430) is connected to the piston rod (420) and extends in the width direction of the force roller (410). An air hole (431) is provided on the hollow shaft (430). The hollow shaft (430) passes through the force roller (410), and the air hole (431) is located inside the force roller (410). The second pressure regulator (460) is communicated with the inner cavity of the hollow shaft (430) and is used to supply and exhaust air to the force roller (410) through the hollow shaft (430) according to the air pressure inside the force roller (410).

[0019] The extrusion plate (450) is connected to the force applying roller (410) on both sides in the width direction of the force applying roller (410), and the distance adjusting device (440) is connected to at least the extrusion plate (450) and is used to drive the extrusion plate (450) to push the force applying roller (410) to adjust the width of the force applying roller (410);

[0020] The regulating assembly further includes a first pressure regulator (470) and a pneumatic cylinder (480);

[0021] The first pressure regulator (470) is in communication with the inner cavity of the pneumatic cylinder (480), and the piston rod (420) is slidably connected to the pneumatic cylinder (480);

[0022] The first pressure regulator (470) is used to supply and exhaust air to the pneumatic cylinder (480) according to the air pressure in the pneumatic cylinder (480).

[0023] Wherein, the equipment further comprises: a laser roughening cleaning device (700);

[0024] The motion actuator (100) is also used to connect and move the laser roughening cleaning device (700), and the laser roughening cleaning device (700) is used to perform laser roughening on at least the surface of the step connection area (02) and to perform defocused laser cleaning on the surface of the step connection area (02);

[0025] The hot melt injection assembly (300) includes a hot melt injection device (310), a nozzle (320) and a scraping device;

[0026] The motion actuator (100) is used to connect and move the hot melt injection device (310);

[0027] The hot melt injection device (310) is connected to the nozzle (320), and the hot melt injection device (310) injects glue (30) into the narrow gap connection area (01) through the nozzle (320). The scraping device is connected to the nozzle (320), and the scraping device is used to scrape the glue (30).

[0028] In another aspect, the present invention provides a method for connecting composite components, which is used in any of the aforementioned composite component connection devices, and the method comprises:

[0029] Aligning and fixing the composite components to form narrow joint areas and stepped joint areas between the composite components;

[0030] The motion actuator is connected to the detection member and moves along the narrow gap connection area and the step connection area to scan the narrow gap connection area and the step connection area, and establishes a three-dimensional topography of the narrow gap connection area and the step connection area in the component coordinate system based on the scanning data;

[0031] According to the three-dimensional appearance of the narrow gap connection area, the volume of the narrow gap connection area is calculated, and the motion actuator drives the hot melt injection assembly to inject glue into the narrow gap connection area according to the volume of the narrow gap connection area;

[0032] Slice the three-dimensional shape of the step connection area, obtain fiber cloth according to the shape of each slice, and connect the fiber cloth to the feeding roller;

[0033] The motion actuator connects the hot-pressing flexible roller and the temperature control component, and lays the fiber cloth layer by layer in sequence toward the stepped connection area. For each layer of fiber cloth, the temperature control component is used to control the temperature of the connection between the fiber cloth and the hot-pressing flexible roller, and the hot-pressing flexible roller is used to squeeze the fiber cloth toward the narrow gap connection area.

[0034] The narrow slit connection area and the step connection area extend in the same direction.

[0035] Before the step of calculating the volume of the narrow slit connection area based on the three-dimensional shape of the narrow slit connection area, and the motion actuator driving the hot melt injection assembly to inject glue into the narrow slit connection area based on the volume of the narrow slit connection area, the method further includes:

[0036] According to the three-dimensional appearance of the step connection area, the motion actuator adjusts the distance between the laser roughening and cleaning device and the step connection area, and at least roughens and cleans the surface of the step connection area to expose the carbon fibers in the step connection area.

[0037] In the step of slicing the three-dimensional topography of the step connection area, the thickness of the slice is consistent with the height of the step groove in the step connection area, or is an integer fraction of the height of the step groove, and the thickness of the slice is consistent with the thickness of the fiber cloth;

[0038] The fiber cloth is formed by stacking multiple layers of unidirectional fiber cloth, and the number of layers of unidirectional fiber cloth included in any fiber cloth is greater than or equal to 3 layers and less than or equal to 20 layers;

[0039] The angle between the fiber directions of adjacent unidirectional fiber cloths in any fiber cloth is greater than or equal to 30 degrees and less than or equal to 90 degrees.

[0040] The step connection area includes a plurality of step grooves, and the widths of different step grooves are different;

[0041] Before the step of using a temperature control component to control the temperature of the connection between the fiber cloth and the hot-pressing flexible roller and causing the hot-pressing flexible roller to press the fiber cloth toward the narrow slit connection area, the method further includes:

[0042] The width of the force-applying roller of the hot-pressing flexible roller is adjusted according to the width of the step groove of the step connection area by the adjustment component of the hot-pressing flexible roller;

[0043] The steps of controlling the temperature of the connection between the fiber cloth and the hot pressing flexible roller by using the temperature control component include:

[0044] The temperature measuring element of the temperature control component is used to collect the temperature of the connection between the fiber cloth and the hot pressing flexible roller;

[0045] According to the temperature, the laser source of the temperature control component outputs heat to the connection between the fiber cloth and the hot pressing flexible roller.

[0046] The step of causing the hot pressing flexible roller to press the fiber cloth toward the narrow slit connection area includes:

[0047] Regulating the internal pressure of the force-applying roller of the hot-pressing flexible roller by a second pressure regulator of the hot-pressing flexible roller;

[0048] The pressure of the hot pressing flexible roller on the fiber cloth is adjusted by the first pressure regulator of the hot pressing flexible roller.

[0049] The present invention proposes a method and device for connecting composite components. By laying multiple layers of fiber cloth into stepped grooves, composite components are connected. This achieves high-strength and reliable connection of ultra-large composite components. There is no need to implant metal connectors or punch holes, thus avoiding mechanical damage caused by damage to the internal fibers of the parts to be connected. At the same time, the dead weight of the structure can be effectively reduced while ensuring structural strength. For ultra-large components, it is difficult to completely eliminate gaps and height differences between composite components when docking them. The present application uses glue injection to fill the narrow seam connection area, which not only increases the contact area between the composite components, but also fills the uneven narrow seam connection area, ensuring the smooth progress of the subsequent fiber cloth laying process. For ultra-large composite components, the connection between composite components is not a closed curve, but more of a segmented line segment. Therefore, it is difficult to connect using a winding continuous laying method. The non-continuous laying method provided by the present invention can effectively adapt to the segmented connection area and ensure reliable connection of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic structural diagram of a composite material component connecting device and a composite material component provided in an embodiment of the present invention;

[0051] Figure 2 for Figure 1 The cross-sectional structure diagram of the composite material component shown is taken from position AA before connection;

[0052] Figure 3 A schematic cross-sectional view of a composite material component after connection provided by an embodiment of the present invention;

[0053] Figure 4 A schematic structural diagram of a laser cleaning, scanning, and additive composite device in a composite component connection device provided by an embodiment of the present invention;

[0054] Figure 5 A schematic structural diagram of a multi-layer fiber cloth laying and hot pressing device in a composite material component connection device provided by an embodiment of the present invention;

[0055] Figure 6 A schematic structural diagram of a hot pressing flexible roller in a composite material component connection device provided by an embodiment of the present invention;

[0056] Figure 7 A flow chart of a first composite material component connection method provided by an embodiment of the present invention;

[0057] Figure 8 This is a flow chart of a second composite component connection method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following is a detailed description of the specific implementation method, structure, characteristics and effects of a composite component connection device proposed in accordance with the present invention, in combination with the accompanying drawings and preferred embodiments.

[0059] like Figure 1-5 As shown, an embodiment of the present invention provides a composite material component connection device, comprising:

[0060] A motion actuator (100), a detection member (200), a hot melt injection assembly (300), a hot pressing flexible roller (400), a temperature control assembly (500) and a feeding roller (600);

[0061] The motion actuator (100) is used to connect and move the detection member (200), the hot melt injection assembly (300), the hot pressing flexible roller (400), the temperature control assembly (500) and the feeding roller (600);

[0062] The detection member (200) is used to obtain the three-dimensional morphology of the narrow gap connection area (01) and the step connection area (02) between the composite material components (20);

[0063] The hot melt injection assembly (300) is at least used for injecting glue (30) into the narrow slit connection area (01);

[0064] The feeding roller (600) is used for connecting and providing the fiber cloth (10) to the stepped connection area (02);

[0065] The temperature control component (500) is used to supply heat to the fiber cloth (10), and the hot pressing flexible roller (400) presses the fiber cloth (10) in a direction close to the narrow slit connection area (01) or in a direction close to the bottom surface of the stepped groove, so that the fiber cloth (10) is bonded to the stepped connection area (02).

[0066] In the following embodiments, for convenience of description, Figure 1 As shown, the extending direction of the narrow slit connection area (01) and the step connection area (02) is the length direction, the length direction is the E direction, the width direction of the narrow slit connection area (01) and the step connection area (02), and the width direction of the force roller (410) are as shown. Figure 2 、 Figure 6 The length direction E is perpendicular to the width direction W.

[0067] The motion actuator (100) can be a variety of mechanisms for grasping and moving targets, such as a six-degree-of-freedom manipulator installed on an external translation axis of the component, which can translate along the length direction E of the composite component (20) and control the angle and position of the actuator end. The composite component connection equipment also includes a laser cleaning, scanning and additive composite device (1000) and a multi-layer fiber cloth laying and hot pressing device (2000). In addition to the aforementioned detection component (200) and hot melt injection component (300), the laser cleaning, scanning and additive composite device (1000) also includes a quick change device (110). In addition to the aforementioned hot pressing flexible roller (400), temperature control component (500) and feeding roller (600), the multi-layer fiber cloth laying and hot pressing device (2000) also includes a quick change device (110). The two quick-change devices (110) are both used to connect to the motion end of the motion actuator (100). The quick-change devices (110) are used to quickly replace the connected load, and can facilitate disassembly, assembly, maintenance, and replacement of the feed roller (600).

[0068] The stepped connection area (02) includes a plurality of stepped grooves arranged from bottom to top and gradually widening. The width of the stepped groove at the bottom, or the stepped groove connected to the narrow slit connection area (01), is greater than that of the narrow slit connection area (01). The feeding roller (600) is used to connect the fiber cloth (10) and provide the fiber cloth (10) to the bottom surface of the stepped groove of the stepped connection area (02). The hot pressing flexible roller (400) squeezes the fiber cloth (10) toward the bottom surface of the stepped groove, and cooperates with the heat supply of the temperature control component (500) to make the fiber cloth (10) fit layer by layer, thereby realizing the connection of the composite material component (20).

[0069] The present invention proposes a composite component connection device that connects composite components by laying multiple layers of fiber cloth into different stepped grooves, thereby achieving high-strength and reliable connection of ultra-large composite components. It does not require the implantation of metal connectors or drilling, thus avoiding damage to the mechanical properties caused by damage to the internal fibers of the parts to be connected. At the same time, it can effectively reduce the dead weight of the structure while ensuring the structural strength. For ultra-large components, it is difficult to completely eliminate gaps and height differences between composite components when docking them. The present application uses glue injection to fill the narrow seam connection area, which not only increases the contact area between the composite components, but also fills the uneven narrow seam connection area, ensuring the smooth progress of the subsequent fiber cloth laying process. For ultra-large composite components, the connection between composite components is not a closed curve, but more of a segmented line segment. Therefore, it is difficult to connect using a winding continuous laying method. The non-continuous laying method provided by the present invention can effectively adapt to the segmented connection area and ensure the reliable connection of the components.

[0070] In one embodiment, the hot pressing flexible roller (400) includes an adjustment component and a force-applying roller (410), wherein the adjustment component is connected to the force-applying roller (410), and the adjustment component is used to adjust the width of the force-applying roller (410) so that at least a portion of the structure of the force-applying roller (410) is embedded in different step grooves of the step connection area (02). The adjustment component is also used to adjust the pressure of the force-applying roller (410).

[0071] The adjustment assembly can adjust the width of the force-applying roller (410), so that the force-applying roller (410) becomes wider or narrower to adapt to stepped grooves of different widths. In other words, the force-applying roller (410) can be embedded in stepped grooves of different widths, and the force-applying roller (410) can cover as much of the bottom surface of the stepped groove as possible to play a role in compacting the fiber cloth (10).

[0072] The width adjustment method of the force roller (410) in the hot pressing flexible roller (400) can be various. In addition, the present application also provides an implementation scheme for adjusting the uniform pressure of the force roller (410) on the fiber cloth (10). Specifically, Figure 6As shown, the adjustment assembly of the hot pressing flexible roller (400) includes a piston rod (420), a hollow shaft (430), a distance adjustment device (440), an extrusion plate (450) and a second pressure regulator (460). The force roller (410) is an elastic flexible airbag. The hollow shaft (430) is connected to the piston rod (420) and extends in the width direction of the force roller (410). An air hole (431) is provided on the hollow shaft (430). The hollow shaft (430) passes through the force roller (410), and the air hole (431) is located in the force roller (410). The second pressure regulator (460) is connected to the inner cavity of the hollow shaft (430) and is used to supply air to the force roller (410) through the hollow shaft (430) according to the air pressure in the force roller (410). The extrusion plate (450) is connected to the force roller (410) on both sides of the width direction of the force roller (410), and the distance adjustment device (440) is connected to at least the extrusion plate (450) and is used to drive the extrusion plate (450) to push the force roller (410) to adjust the width of the force roller (410). The adjustment component also includes a first pressure regulator (470) and a pneumatic cylinder (480). The first pressure regulator (470) is connected to the inner cavity of the pneumatic cylinder (480), and the piston rod (420) is slidably connected to the pneumatic cylinder (480). The first pressure regulator (470) is used to supply air to the pneumatic cylinder (480) according to the air pressure in the pneumatic cylinder (480).

[0073] The flexible airbag can be a bladder-like member made of a variety of flexible materials, such as a rubber bladder. The flexible airbag is generally cylindrical and extends axially in the width direction W. The width of the flexible airbag can be adjusted according to the width of the stepped groove to accommodate stepped grooves of varying widths. The width of the flexible airbag can be adjusted from 8 mm to 400 mm.

[0074] The piston rod (420) can be a Y-shaped bifurcated structure, including a rod body and two connecting grips connected to the rod body, the connecting grips are spaced apart at one end away from the rod body, and the hollow shaft (430) extends in the width direction W, and the two ends are respectively connected to the end of the connecting grip away from the rod body. The two extrusion plates (450) are located on both sides of the axial direction of the flexible airbag and are slidably connected to the hollow shaft (430). The distance adjustment device (440) can be a variety of structures that can push the extrusion plates (450) to move in the width direction W, such as a cylinder that drives the extrusion plates (450) to move in the width direction W through the action of the cylinder piston; or, it can be a telescopic motor, etc. By bringing the two extrusion plates (450) closer to each other, the width of the flexible airbag can be reduced to adapt to a narrower step groove. And by moving the two extrusion plates (450) away from each other, the width of the flexible airbag can be increased to adapt to a wider step groove.

[0075] The second pressure regulator (460) can control the compressed air entering the flexible airbag. After the extrusion plate (450) completes the width adjustment, the second pressure regulator (460) can pass compressed air into the flexible airbag and adjust the gas in the flexible airbag to the working pressure. When the two extrusion plates (450) move away from each other, the air pressure inside the flexible airbag will decrease. At this time, the second pressure regulator (460) can be used to supply air to the hollow shaft (430). The gas will enter the flexible airbag through the air hole (431) of the hollow shaft (430), and then the flexible airbag will be inflated and the air pressure will increase until the preset air pressure is reached. During the laying of the fiber cloth (10), the inflation or exhaust is dynamically adjusted according to the air pressure inside the flexible airbag to obtain a consistent pressure effect. The second pressure regulator (460) can adjust the gas pressure between 0.2MPa and 1MPa and ensure that the outlet pressure of the second pressure regulator (460) is stable.

[0076] The first pressure regulator (470) can adjust the air pressure in the pneumatic cylinder (480) according to the reaction force of the flexible airbag squeezing the fiber cloth (10), ensuring that the hot pressing flexible roller (400) applies a consistent pressure to the fiber cloth (10). At the same time, it avoids overpressure or underpressure caused by the end position error of the motion actuator (100) or the local unevenness of the stepped connection area (02). If the bottom surface of the stepped connection area (02) has a protrusion, when the flexible airbag passes through the protrusion, it will apply a greater reaction force to the gas in the pneumatic cylinder (480) through the piston rod (420), thereby causing the air pressure in the pneumatic cylinder (480) to increase, and the pressure of the flexible airbag on the fiber cloth (10) will also increase. At this time, part of the gas in the pneumatic cylinder (480) can be discharged through the first pressure regulator (470) to reduce the air pressure in the pneumatic cylinder (480), thereby ensuring that the pressure of the flexible airbag on the fiber cloth (10) is consistent. When the flexible airbag passes over the protrusion, the air pressure in the pneumatic cylinder (480) decreases. At this time, the first pressure regulator (470) inflates the pneumatic cylinder (480). The above process can be dynamically adjusted according to the air pressure in the pneumatic cylinder (480). The first pressure regulator (470) can adjust the gas pressure between 0.2MPa and 5MPa, and ensure that the outlet pressure of the first pressure regulator (470) is stable.

[0077] In some other embodiments, the force roller (410) may not be a flexible airbag, but a flexible part that can be squeezed and deformed, such as a solid rubber block or a flexible block made of other materials. When the extrusion plates (450) approach each other, the width decreases, and when the extrusion plates (450) move away from each other, the shape is restored and the width increases.

[0078] It is worth noting that the flexible airbag is elastic. When the extrusion plates (450) are brought closer together, the air in the flexible airbag is released, thereby reducing the pressure inside the flexible airbag. As the flexible airbag recovers its shape, the position of the radial edge of the flexible airbag relative to the extrusion plates (450) will not change significantly. In other words, the outer diameter of the flexible airbag is relatively stable.

[0079] The present invention provides a constant-force airbag-type flexible pressure wheel with variable width. The airbag-type pressure wheel can be deformed when there is a local concave-convex change in the step connection area (02), which can ensure the uniform application of pressure and avoid local overpressure and underpressure. In addition, due to the limited accuracy of the motion trajectory of the multi-degree-of-freedom manipulator, if there is no constant-force execution pressure wheel, it is difficult to achieve reliable compression of the fiber cloth (10). The hot pressing flexible roller (400) proposed by the present invention has a pneumatic constant pressure function, which can achieve reliable compression of the fiber cloth (10) under the poor accuracy of the manipulator motion trajectory. At the same time, the application provides a force roller (410) with variable width. The force roller (410) can adapt to the step grooves of the step connection area (02) of different widths, and deform when there is a local concave-convex change in the step connection area (02), so as to achieve reliable contact between the fiber cloth (10) and the step connection area.

[0080] On the other hand, the present invention also provides a method for connecting composite components, which can be implemented using the aforementioned composite component connection equipment. For the convenience of explanation, the following will combine the method to give examples and detailed descriptions of the equipment and the steps of using the equipment to connect composite components.

[0081] like Figure 7 As shown, the present application provides a method comprising:

[0082] S1-1. Align and fix the composite material components (20), forming a narrow gap connection area (01) and a stepped connection area (02) between the composite material components (20).

[0083] After the two composite material components (20) to be connected are spatially aligned, they are fixed using a fixture available in the prior art. In one embodiment, Figure 2 As shown, the composite material component (20) is a composite material component (20) prefabricated with a stepped connection groove, that is, two composite material components (20) are made with stepped connection grooves on opposite sides, and the two sides are symmetrical. Then, after the stepped connection grooves of the two composite material components (20) are relatively arranged, a narrow gap connection area (01) located at the bottom and a stepped connection area (02) located above the narrow gap connection area (01) are formed. The stepped connection area (02) includes a plurality of stepped grooves from bottom to top, and the width of each stepped groove is different, and the width of the stepped groove widens from bottom to top.

[0084] The narrow slit connection area (01) and the step connection area (02) extend in the same direction, ensuring that the step connection area (02) has sufficient length, which can increase the contact area between the fiber cloth (10) and the composite material component (20). The width of any step groove is greater than or equal to 10 mm and less than or equal to 200 mm, ensuring a better laying effect of the fiber cloth (10). The height of any step groove is greater than or equal to 0.3 mm and less than or equal to 5 mm, so as to match the thickness of the fiber cloth (10) and avoid excessive or insufficient laying of the fiber cloth (10). The width s of the narrow slit connection area (01) is less than 5 mm to avoid poor stability caused by an excessively large glue (30) area. The height difference of the opening edges on both sides of the narrow slit connection area (01) in the width direction is less than 2 mm, avoiding difficulty in laying the fiber cloth (10) and ensuring the connection strength and stability of the fiber cloth (10). The widths of the multiple step grooves can differ by 30 mm, 60 mm, etc.

[0085] In the first embodiment, the height H or the wall thickness of the composite material component (20) is 6 mm, and the width s of the narrow seam connection area (01) is 0.3 mm. Figure 1-3 As shown, the height of the narrow slit connection area (01) is 2 mm, and the stepped connection area (02) includes two stepped grooves from bottom to top, the height h of each stepped groove is 2 mm, the width d1 of the stepped groove at the bottom is 60 mm, and the width d2 of the stepped groove at the top is 120 mm.

[0086] In a second embodiment, the height or wall thickness of the composite material component (20) may be 7 mm, the width of the narrow seam connection area (01) may be 0.3 mm, the height of the narrow seam connection area (01) may be 2 mm, and the step connection area (02) may include five step grooves from bottom to top, each step groove has a height of 1 mm, and the widths of the five step grooves from bottom to top are 60 mm, 120 mm, 180 mm, 240 mm and 300 mm respectively.

[0087] In a third embodiment, the height or wall thickness of the composite material component (20) may be 4 mm, the width of the narrow seam connection area (01) may be 0.3 mm, the height of the narrow seam connection area (01) may be 1.5 mm, and the step connection area (02) may include five step grooves from bottom to top, each step groove has a height of 0.5 mm, and the widths of the five step grooves from bottom to top are 60 mm, 120 mm, 180 mm, 240 mm and 300 mm, respectively.

[0088] S1-2, the motion actuator (100) is connected to the detection member (200), and moves along the narrow slit connection area (01) and the step connection area (02), scans the narrow slit connection area (01) and the step connection area (02), and establishes the three-dimensional morphology of the narrow slit connection area (01) and the step connection area (02) in the component coordinate system based on the scanning data.

[0089] The detection member (200) may be a line laser scanner. The motion actuator (100) grabs the line laser scanner to scan the surface of the narrow slit connection area (01) and the stepped connection area (02) to establish a surface model. The scanning speed of the line laser scanner is not less than 5 mm / s. For example, the line laser scanner may be moved at a speed of 10 mm / s and scan the connection area using the line laser scanner.

[0090] S1-3. Based on the three-dimensional appearance of the narrow slit connection area (01), the volume of the narrow slit connection area (01) is calculated, and the motion actuator (100) drives the hot melt injection assembly (300) to inject glue (30) into the narrow slit connection area (01) based on the volume of the narrow slit connection area (01).

[0091] The hot melt injection assembly (300) includes a hot melt injection device (310), a nozzle (320) and a scraping device. The volume of the narrow slit connection area (01) is calculated based on the three-dimensional morphology of the narrow slit connection area (01), and the volume of the narrow slit connection area (01) along the extension direction of the narrow slit connection area (01) is calculated. The motion actuator (100) is used to connect and move the hot melt injection device (310) along the extension direction of the narrow slit connection area (01). The hot melt injection device (310) is connected to the nozzle (320), and the nozzle (320) is opposite to the narrow slit connection area (01). The hot melt injection device (310) injects glue (30) into the narrow slit connection area (01) through the nozzle (320) and controls the injection amount according to the volume. The scraping device is connected to the nozzle (320) and is located behind the nozzle (320) in the moving direction. The scraping device is used to scrape the top surface of the glue (30) to smooth the short fiber resin material near the slit.

[0092] The hot melt injection assembly (300) injects glue (30) into the narrow slit connection area (01) according to the volume of the narrow slit connection area (01), including injecting short fiber resin, the short fiber resin is at least one of carbon fiber, aramid fiber, polyimide fiber, glass fiber, polyamide fiber and silicon carbide fiber, and the fiber length is greater than or equal to 0.1 mm and less than or equal to 5 mm. For example, the short fiber used can be carbon fiber with a fiber length of 0.5 mm.

[0093] The hot melt injection assembly (300) injects glue (30) into the narrow slit connection area (01) according to the volume of the narrow slit connection area (01), including injecting hot melt resin, and the hot melt resin is at least one of polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), polyetherketoneetherketoneketone (PEKEKK), polyphenylene sulfide (PPS), polyetherimide (PEI), polyethersulfone (PES), polyamide (PA) and modified polyaryletherketone (modified PAEK). For example, the resin used is polyetheretherketone (PEEK).

[0094] When the short fiber resin is injected, the movement speed of the motion actuator (100) can be 5 mm / s.

[0095] S1-4, slicing the three-dimensional shape of the stepped connection area (02), obtaining a fiber cloth (10) according to the shape of each slice, and connecting the fiber cloth (10) to the feeding roller (600).

[0096] The thickness of the slice is consistent with the height of the step groove in the step connection area (02), or is an integer fraction of the height of the step groove. Figure 3 As shown, the step connection area (02) includes two step grooves from bottom to top, each step groove has a height h of 2 mm, a width d1 of the lower step groove is 60 mm, and a width d2 of the upper step groove is 120 mm. When slicing, each step groove can be sliced into 4 slices, that is, the thickness of the slice is one-quarter of the step groove.

[0097] In the aforementioned second embodiment, the step connection area (02) includes five step grooves from bottom to top, each step groove has a height of 1 mm, and the widths of the five step grooves from bottom to top are 60 mm, 120 mm, 180 mm, 240 mm, and 300 mm, respectively. When slicing, each step groove can be sliced into two slices, that is, the thickness of the slice is half the thickness of the step groove.

[0098] In the aforementioned third embodiment, the step connection area (02) includes five step grooves from bottom to top, each step groove has a height of 0.5 mm, and the widths of the five step grooves from bottom to top are 60 mm, 120 mm, 180 mm, 240 mm, and 300 mm, respectively. When slicing, each step groove can be sliced into one slice, that is, the thickness of the slice is the thickness of the step groove.

[0099] The fiber cloth (10) is a multi-layer pre-impregnated fiber cloth, and the fiber cloth (10) is formed by stacking multiple layers of unidirectional fiber cloth. The number of layers of unidirectional fiber cloth included in any fiber cloth (10) is greater than or equal to 3 layers and less than or equal to 20 layers. The angle between the fiber directions of adjacent unidirectional fiber cloths in any fiber cloth (10) is greater than or equal to 30 degrees and less than or equal to 90 degrees. The fibers of the fiber cloth (10) are at least one of carbon fiber, aramid fiber, polyimide fiber, glass fiber, polyamide fiber and silicon carbide fiber. The matrix of the fiber cloth (10) is one of polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), polyetherketoneetherketoneketone (PEKEKK), polyphenylene sulfide (PPS), polyetherimide (PEI), polyethersulfone (PES), polyamide (PA) and modified polyaryletherketone (modified PAEK).

[0100] The slice thickness is the thickness of the fiber cloth (10). In the above two embodiments, the slice thickness is 0.5 mm. The multi-layer prepreg fiber cloth used is composed of 5 layers of unidirectional fiber cloth stacked together. The thickness of a single layer of unidirectional fiber cloth is 0.1 mm. The fiber directions of each layer of unidirectional fiber cloth are arranged at 0°, 45°, 90°, -45°, and 0°. The resin used in the multi-layer prepreg fiber cloth is polyetheretherketone (PEEK).

[0101] The multi-layer pre-impregnated fiber cloth used in the present invention can adjust the fiber direction between each layer according to the stress requirements of the composite material component (20). Compared with unidirectional fiber tape, it can effectively improve the mechanical properties of the connection area and ensure the safe and reliable use of the composite material component (20).

[0102] After slicing, the fiber cloth (10) is cut according to the outline or width of the slice, for example, a water-guided laser or an ultrafast laser can be used to cut the fiber cloth (10). For example, a water-guided laser processing device is used to cut multiple layers of pre-impregnated fiber cloth according to the shape of each slice, and the pre-impregnated fiber cloth is stored in a feeding drum (600).

[0103] S1-5, the motion actuator (100) is connected to the hot pressing flexible roller (400) and the temperature control component (500), and the fiber cloth (10) is laid layer by layer in sequence toward the stepped connection area (02). For each layer of fiber cloth (10), the temperature control component (500) is used to control the temperature of the connection point of the fiber cloth (10) corresponding to the hot pressing flexible roller (400), and the hot pressing flexible roller (400) is made to squeeze the fiber cloth (10) toward the bottom surface of the stepped groove close to the stepped connection area (02), or in other words, toward the narrow slit connection area (01).

[0104] The fiber cloth (10) may be wound on the feeding roller (600), as shown in FIG. Figure 5 As shown, the fiber cloth (10) passes around the force-applying roller (410) from the front end in the moving direction of the force-applying roller (410) and is fixed to one side of the stepped connection area (02) of the composite material component (20). When the force-applying roller (410) moves along the stepped connection area (02), it pushes and presses the fiber cloth (10) from front to back and from top to bottom, so that the fiber cloth (10) is closely attached to the bottom surface of the stepped groove and / or the fiber cloth (10) already laid on the previous layer.

[0105] Since the stepped connection area (02) includes a plurality of stepped grooves, the widths of different stepped grooves are different. In order to enable the hot pressing flexible roller (400) to be embedded in different stepped grooves, before the step of using a temperature control component (500) to control the temperature of the connection between the fiber cloth (10) and the hot pressing flexible roller (400), and causing the hot pressing flexible roller (400) to extrude the fiber cloth (01) in a direction close to the narrow slit connection area (01), the method further includes: adjusting the width of the force roller (410) of the hot pressing flexible roller (400) according to the width of the stepped groove of the stepped connection area (02) by using the adjustment component of the hot pressing flexible roller (400); when each layer of fiber cloth (10) needs to be laid, the force roller (410) is adjusted successively according to the laid stepped groove, so that the width of the force roller (410) is increased to match the stepped groove, so that a part of the structure of the force roller (410) is embedded in the stepped groove of the stepped connection area (02), and the force roller (410) can be almost covered with the bottom surface of the entire stepped groove through flexible deformation to extrude the fiber cloth (10).

[0106] The laying speed of the fiber cloth (10) is not less than 20 mm / s, and the pre-tightening force is greater than or equal to 10 N and less than or equal to 150 N.

[0107] The temperature measuring element (510) of the temperature control component (500) is used to collect the temperature of the connection between the fiber cloth (10) and the hot pressing flexible roller (400), and according to the temperature, the laser source (520) of the temperature control component (500) is used to output heat to the connection between the fiber cloth (10) and the hot pressing flexible roller (400). The temperature of the connection between the fiber cloth (10) and the hot pressing flexible roller (400) is lower than the melting temperature of the fiber cloth (10) matrix by 20°C-65°C and higher than the glass transition temperature of the fiber cloth (10) matrix.

[0108] In the embodiment in which the adjustment component of the aforementioned hot pressing flexible roller (400) includes a piston rod (420), a hollow shaft (430), a distance adjustment device (440), an extrusion plate (450), a second pressure regulator (460), a first pressure regulator (470) and a pneumatic cylinder (480), the step of the hot pressing flexible roller (400) extruding the fiber cloth (10) in a direction close to the narrow gap connection area (01) specifically includes: adjusting the internal pressure of the force roller (410) of the hot pressing flexible roller (400) by the second pressure regulator (460). Adjusting the pressure of the hot pressing flexible roller (400) on the fiber cloth by the first pressure regulator (470). The specific adjustment method and principle are as described above and will not be repeated here. The pressure of the hot pressing flexible roller (400) on the fiber cloth (10) is greater than or equal to 0.2MPa and less than or equal to 5MPa.

[0109] For example, in the aforementioned third embodiment, the step connection area (02) includes five step grooves from bottom to top, each step groove has a height of 0.5 mm, and the widths of the five step grooves from bottom to top are 60 mm, 120 mm, 180 mm, 240 mm, and 300 mm, respectively. When slicing, each step groove can be sliced into one piece, that is, the thickness of the slice is the thickness of the step groove, that is, a layer of fiber cloth (10) is laid in each step groove.

[0110] The motion actuator (100) grabs the multi-layer fiber cloth laying and hot pressing device (2000) and lays the multi-layer pre-impregnated fiber cloth in sequence.

[0111] The first layer of fiber cloth (10) has a width of 60 mm, a laying speed of 30 mm / s, and a preload force of 15 N. The width of the force roller (410) is adjusted to 60 mm, and the internal pressure of the flexible airbag is adjusted to 0.3 MPa. The internal pressure of the pneumatic cylinder (480) is adjusted to 0.3 MPa. The motion actuator (100) lays the fiber cloth (10). During the laying process, a laser source (520) is used to control the temperature of the laying area to be 25° lower than the melting temperature of the PEEK resin. The force roller (410) compacts the laid fiber cloth (10).

[0112] The width of the second layer of fiber cloth (10) is 120 mm, the preload force is set to 20 N, the width of the force roller (410) is adjusted to 120 mm, and the internal pressure of the pneumatic cylinder (480) is adjusted to 0.6 MPa. The other parameters remain unchanged.

[0113] The width of the third layer of fiber cloth (10) is 180 mm, the preload force is set to 25 N, the width of the force roller (410) is adjusted to 180 mm, and the internal pressure of the pneumatic cylinder (480) is adjusted to 0.9 MPa. The other parameters remain unchanged.

[0114] The fourth layer of fiber cloth (10) has a width of 240 mm, the preload force is set to 30 N, the width of the force roller (410) is adjusted to 240 mm, and the internal pressure of the pneumatic cylinder (480) is adjusted to 1.2 MPa. The other parameters remain unchanged.

[0115] The fifth layer of fiber cloth (10) has a width of 300 mm, the preload force is set to 35 N, the width of the force roller (410) is adjusted to 300 mm, and the internal pressure of the pneumatic cylinder (480) is adjusted to 1.5 MPa. The other parameters remain unchanged.

[0116] like Figure 8 As shown, the present application also provides another method, comprising:

[0117] S2-1. Aligning and fixing the composite material components (20), forming a narrow gap connection area (01) and a stepped connection area (02) between the composite material components (20).

[0118] S2-2, the motion actuator (100) is connected to the detection member (200), and moves along the narrow slit connection area (01) and the step connection area (02), scans the narrow slit connection area (01) and the step connection area (02), and establishes the three-dimensional morphology of the narrow slit connection area (01) and the step connection area (02) in the component coordinate system based on the scanning data.

[0119] Please refer to the first implementation method, which will not be described here in detail.

[0120] S2-3. According to the three-dimensional appearance of the step connection area (02), the motion actuator (100) adjusts the distance between the laser roughening and cleaning device (700) and the step connection area (02), roughening and cleaning at least the surface of the step connection area (02) so that the carbon fibers in the step connection area (02) are exposed.

[0121] The device also includes a laser roughening cleaning device (700), or the laser cleaning scanning and additive composite device (1000) includes a laser roughening cleaning device (700). The motion actuator (100) is used to connect and move the laser roughening cleaning device (700), such as the laser roughening cleaning device (700) can be connected through a quick-change device (110). The laser roughening cleaning device (700) is used to perform laser roughening on the surface of the step connection area (02), and the motion actuator (100) moves the laser roughening cleaning device (700) to the surface of the step connection area (02) for defocused laser cleaning, thereby achieving one laser roughening and one defocused laser cleaning of the step connection area (02). The laser roughening process can remove the resin on the surface of the area to be connected, expose the carbon fiber, and enhance the contact area and connection ability with the fiber cloth (10). The laser cleaning process adopts a positive defocus method to remove the resin debris generated after roughening.

[0122] The laser wavelength of the laser texturing cleaning device (700) includes 1064 nm, 532 nm or 266 nm, and the laser pulse width is less than 10 microseconds. The laser texturing cleaning device (700) uses a positive defocus method to perform defocused laser cleaning, and the defocus amount is less than 1 mm. For example, the light source used for laser texturing can be a picosecond laser with a wavelength of 1064 nm, a pulse width of 100 ps, a frequency of 25 MHz, and a scanning speed of 6 m / s. The light source used for laser cleaning can be a picosecond laser with a wavelength of 1064 nm, a pulse width of 100 ps, a frequency of 25 MHz, a scanning speed of 10 m / s, and a defocus amount of 50 μm.

[0123] In addition, in some embodiments, the narrow slit connection area (01) can be subjected to a laser roughening and a defocused laser cleaning at the same time to increase the connection strength of the glue (30).

[0124] S2-4. Based on the three-dimensional appearance of the narrow slit connection area (01), the volume of the narrow slit connection area (01) is calculated, and the motion actuator (100) drives the hot melt injection assembly (300) to inject glue (30) into the narrow slit connection area (01) based on the volume of the narrow slit connection area (01).

[0125] S2-5, slicing the three-dimensional shape of the stepped connection area (02), obtaining a fiber cloth (10) according to the shape of each slice, and connecting the fiber cloth (10) to the feeding roller (600).

[0126] S2-6, the motion actuator (100) is connected to the hot pressing flexible roller (400) and the temperature control component (500), and the fiber cloth (10) is laid layer by layer in the step connection area (02) in sequence. For each layer of fiber cloth (10), the width of the force roller (410) of the hot pressing flexible roller (400) is adjusted according to the width of the step groove of the step connection area (02) by the adjustment component of the hot pressing flexible roller (400), and the temperature measuring component (510) of the temperature control component (500) is used to collect the temperature of the connection between the fiber cloth (10) and the hot pressing flexible roller (400). According to the temperature, the laser source (520) of the temperature control component (500) is used to output heat to the connection between the fiber cloth (10) and the hot pressing flexible roller (400), and the hot pressing flexible roller (400) is made to squeeze the fiber cloth (10) toward the bottom surface of the step groove close to the step connection area (02).

[0127] You can refer to the first method, which will not be described here.

[0128] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A composite material component connection device, characterized in that: include: A motion actuator (100), a detection member (200), a hot melt injection assembly (300), a hot pressing flexible roller (400), a temperature control assembly (500) and a feeding roller (600); The motion actuator (100) is used to connect and move the detection member (200), the hot melt injection assembly (300), the hot pressing flexible roller (400), the temperature control assembly (500) and the feeding roller (600); The detection member (200) is used to obtain the three-dimensional topography of the narrow gap connection area (01) and the step connection area (02) between the composite material components (20); The hot melt injection assembly (300) is at least used for injecting glue (30) into the narrow slit connection area (01); The feeding roller (600) is used to connect the fiber cloth (10) and provide the fiber cloth (10) to the stepped connection area (02); The temperature control component (500) is used to supply heat to the fiber cloth (10), and the hot pressing flexible roller (400) presses the fiber cloth (10) in a direction close to the narrow slit connection area (01) so that the fiber cloth (10) is bonded to the stepped connection area (02).

2. The composite component connection device according to claim 1, characterized in that: The step connection area (02) includes a plurality of step grooves, and the widths of the step grooves are different; The hot pressing flexible roller (400) comprises an adjustment component and a force-applying roller (410), wherein the adjustment component is connected to the force-applying roller (410), and the adjustment component is used to adjust the width of the force-applying roller (410) so that at least a portion of the structure of the force-applying roller (410) is embedded in different step grooves of the step connection area (02); The adjustment component is also used to adjust the pressure of the force-applying roller (410).

3. The composite material component connection device according to claim 2, characterized in that: The regulating assembly comprises a piston rod (420), a hollow shaft (430), a distance regulating device (440), an extrusion plate (450) and a second pressure regulator (460); The force roller (410) is a flexible airbag, the hollow shaft (430) is connected to the piston rod (420) and extends in the width direction of the force roller (410), an air hole (431) is provided on the hollow shaft (430), the hollow shaft (430) passes through the force roller (410), and the air hole (431) is located in the force roller (410), and the second pressure regulator (460) is communicated with the inner cavity of the hollow shaft (430) and is used to supply and exhaust the force roller (410) through the hollow shaft (430) according to the air pressure in the force roller (410); The extrusion plate (450) is connected to the force applying roller (410) on both sides in the width direction of the force applying roller (410), and the distance adjusting device (440) is connected to at least the extrusion plate (450) and is used to drive the extrusion plate (450) to push the force applying roller (410) to adjust the width of the force applying roller (410); The regulating assembly further includes a first pressure regulator (470) and a pneumatic cylinder (480); The first pressure regulator (470) is in communication with the inner cavity of the pneumatic cylinder (480), and the piston rod (420) is slidably connected to the pneumatic cylinder (480); The first pressure regulator (470) is used to supply and exhaust air to the pneumatic cylinder (480) according to the air pressure passing through the pneumatic cylinder (480).

4. The composite component connection device according to claim 1, characterized in that: The device further comprises: Laser texturing cleaning device (700); The motion actuator (100) is further used to connect and move the laser roughening cleaning device (700), and the laser roughening cleaning device (700) is used to perform laser roughening on at least the surface of the step connection area (02) and to perform defocused laser cleaning on the surface of the step connection area (02); The hot melt injection assembly (300) comprises a hot melt injection device (310), a nozzle (320) and a scraping device; The motion execution mechanism (100) is used to connect and move the hot melt injection device (310); The hot melt injection device (310) is connected to the nozzle (320), and the hot melt injection device (310) injects glue (30) into the narrow slit connection area (01) through the nozzle (320). The scraping device is connected to the nozzle (320), and the scraping device is used to scrape the glue (30).

5. A composite component connection method, used in the composite component connection device according to any one of claims 1 to 4, characterized in that: The method comprises: Aligning and fixing the composite material components, forming narrow gap connection areas and step connection areas between the composite material components; The motion actuator is connected to the detection member and moves along the narrow slit connection area and the step connection area to scan the narrow slit connection area and the step connection area, and establishes a three-dimensional topography of the narrow slit connection area and the step connection area in a component coordinate system based on the scan data; Calculating the volume of the narrow slit connection area according to the three-dimensional shape of the narrow slit connection area, and driving the hot melt injection assembly to inject glue into the narrow slit connection area according to the volume of the narrow slit connection area by the motion actuator; Slicing the three-dimensional shape of the stepped connection area, obtaining a fiber cloth according to the shape of each slice, and connecting the fiber cloth to a feeding roller; The motion actuator is connected to the hot-pressing flexible roller and the temperature control component, and the fiber cloth is laid layer by layer in sequence toward the stepped connection area. For each layer of the fiber cloth, the temperature of the connection between the fiber cloth and the hot-pressing flexible roller is controlled by the temperature control component, and the hot-pressing flexible roller is pressed toward the narrow slit connection area.

6. The composite material component connection method according to claim 5, characterized in that: The narrow slit connection area and the step connection area extend in the same direction.

7. The method for connecting composite components according to claim 5, characterized in that: Before the step of calculating the volume of the narrow slit connection area based on the three-dimensional shape of the narrow slit connection area, and the motion actuator driving the hot melt injection assembly to inject glue into the narrow slit connection area based on the volume of the narrow slit connection area, the method further comprises: According to the three-dimensional morphology of the step connection area, the motion actuator adjusts the distance between the laser roughening and cleaning device and the step connection area, and at least roughens and cleans the surface of the step connection area so that the carbon fibers in the step connection area are exposed.

8. The composite material component connection method according to claim 5, characterized in that: In the step of slicing the three-dimensional topography of the step connection area, the thickness of the slice is consistent with the height of the step groove in the step connection area, or is an integer fraction of the height of the step groove, and the thickness of the slice is consistent with the thickness of the fiber cloth; The fiber cloth is formed by stacking multiple layers of unidirectional fiber cloth, and the number of layers of the unidirectional fiber cloth included in any of the fiber cloths is greater than or equal to 3 layers and less than or equal to 20 layers; The angle between the fiber directions of adjacent unidirectional fiber cloths in any of the fiber cloths is greater than or equal to 30 degrees and less than or equal to 90 degrees.

9. The method for connecting composite components according to claim 5, wherein: The stepped connection area includes a plurality of stepped grooves, and the widths of the stepped grooves are different; Before the step of controlling the temperature of the connection between the fiber cloth and the hot-pressing flexible roller using a temperature control component and causing the hot-pressing flexible roller to press the fiber cloth toward the narrow slit connection area, the method further includes: Adjusting the width of the force-applying roller of the hot-pressing flexible roller according to the width of the step groove of the step connection area through the adjusting component of the hot-pressing flexible roller; The step of using a temperature control component to control the temperature of the connection between the fiber cloth and the hot pressing flexible roller includes: The temperature of the connection between the fiber cloth and the hot pressing flexible roller is collected by using the temperature measuring element of the temperature control assembly; According to the temperature, the laser source of the temperature control component is used to output heat to the connection between the fiber cloth and the hot pressing flexible roller.

10. The composite material component connection method according to claim 5, characterized in that: The step of causing the hot pressing flexible roller to press the fiber cloth toward the narrow slit connection area includes: regulating the internal pressure of the force-applying roller of the hot-pressing flexible roller by a second pressure regulator of the hot-pressing flexible roller; The pressure of the hot pressing flexible roller on the fiber cloth is adjusted by a first pressure regulator of the hot pressing flexible roller.

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