Traction dipping device for 3D printing of continuous fiber reinforced composite material

Abstract

The invention belongs to the field of dipping devices, and particularly relates to a continuous fiber reinforced composite 3D printing traction dipping device which comprises a dipping tank, the left end and the right end of the dipping tank are fixedly connected with a plurality of evenly-distributed supporting rods, the outer sides of the supporting rods are fixedly connected with supports, and the inner sides of the supports are rotationally connected with guide rollers. And the top of the dipping tank is fixedly connected with a cover plate. Through the design of the guide roller, conveying of materials can be guided, under the action of the pressing roller, the conveyed materials can be pressed downwards, the height of the pressing roller is adjustable, the conveying tension force of the materials can be adjusted, the materials can be completely immersed in impregnation liquid, the situation that the materials are curled and wrinkled to affect impregnation use can be avoided, and the impregnation efficiency is improved. And clamping balls and clamping grooves are matched in an inserted mode, the static rotating shaft can be limited, then the position of the pressing roller can be limited, and the situation that the material dipping effect is affected by deviation and movement of the pressing roller is avoided.

Description

Technical Field

[0001] This invention relates to the field of impregnation apparatus technology, and more particularly to a traction impregnation apparatus for 3D printing of continuous fiber reinforced composite materials. Background Technology

[0002] Continuous fiber reinforced composite materials are mainly used in numerous high-tech fields and key industrial scenarios such as aerospace, rail transportation, new energy vehicles, high-end equipment manufacturing, and construction engineering. They provide lightweight solutions for core structural components such as fuselages and wings of aerospace vehicles to improve flight performance and range. They also help rail transportation vehicles and new energy vehicles achieve weight reduction and energy efficiency in their bodies and key components. Furthermore, they can be used to manufacture core load-bearing components for high-end equipment and large-span, high-durability components in construction engineering, meeting the high-performance application requirements of various fields under specific working conditions. In the production and processing of continuous fiber reinforced composite materials, products can be processed using 3D printing. However, the 3D printing process requires the use of an impregnation device.

[0003] 3D-printed traction impregnation devices, leveraging the customized molding advantages of 3D printing technology, primarily serve the diverse preparation needs in the field of composite materials. They provide highly adaptable traction impregnation support for small-batch R&D of continuous fiber-reinforced composite materials in the laboratory stage, and can also achieve personalized traction and impregnation process adaptation for composite material preforms with special structures and non-standard dimensions. Furthermore, in flexible manufacturing scenarios, they meet the flexible and efficient application requirements of the traction impregnation process in the production of different types of composite material products. In existing technologies, it is inconvenient to adjust the tension of the conveyed material during impregnation. If the material curls or wrinkles, it will affect the impregnation effect. Moreover, impurities inevitably mix into the impregnation solution during the impregnation process, and the difficulty in filtering the impregnation solution further affects the impregnation effect. Therefore, improvements are needed. Summary of the Invention

[0004] This invention provides a traction impregnation device for 3D printing of continuous fiber reinforced composite materials, which solves the technical problems of inconvenience in adjusting the tension of the conveyed material and inconvenience in filtering the impregnation liquid during impregnation.

[0005] To solve the above-mentioned technical problems, the present invention provides a traction impregnation device for 3D printing of continuous fiber reinforced composite materials, including an impregnation tank. Multiple evenly distributed support rods are fixedly connected to both ends of the impregnation tank. A bracket is fixedly connected to the outer side of each support rod, and a guide roller is rotatably connected to the inner side of the bracket. A cover plate is fixedly connected to the top of the impregnation tank, and a filter tank is fixedly connected to the bottom of the impregnation tank. A drain port is fixedly connected to the bottom of the filter tank. A tensioning mechanism is provided on the impregnation tank, and a filtering mechanism is provided on the filter tank.

[0006] Preferably, the tensioning mechanism includes a fixed base. The lower end of the cover plate is fixedly connected to the fixed base. Two symmetrically distributed gears are rotatably connected inside the fixed base. A screw is fixedly connected to the lower end of each gear. A threaded sleeve is threaded onto the outer side of the screw. A connecting frame is fixedly connected to the lower end of the threaded sleeve. A pressure roller is rotatably connected to the inner side of the connecting frame. A guide rod is slidably sleeved inside the connecting frame and fixedly connected to the fixed base. A gear ring meshes with the outer side of each gear and is rotatably connected to the fixed base. A rotating shaft is fixedly connected to the top of the gear ring and rotatably connected to the cover plate. A handle is fixedly connected to the top of the rotating shaft. A groove is formed on the outer surface of the rotating shaft. A retaining ball is movably sleeved inside the groove. A pressing block is movably sleeved outside the retaining ball and slidably connected to the cover plate. A fixed rod is slidably sleeved inside the pressing block and fixedly connected to the cover plate. By designing this tensioning mechanism, the tension of the material conveying can be adjusted.

[0007] Preferably, a sealing ring is rotatably fitted onto the outer side of the screw, and the sealing ring is fixedly connected to the fixed base. The sealing ring is made of rubber. By designing the sealing ring, the connection between the screw and the fixed base can be sealed.

[0008] Preferably, there are multiple slots, which are arranged in a ring and evenly distributed on the outer surface of the rotating shaft. By designing multiple slots, the ball can roll into the slots at different positions.

[0009] Preferably, a first spring is provided on the outer side of the fixing rod, one end of the first spring is fixedly connected to the abutment block, and the other end of the first spring is fixedly connected to the cover plate. By designing the first spring, the elastic force of the first spring can be applied to the abutment block.

[0010] Preferably, the filtration mechanism includes a pump body one, which is fixedly installed at the left end of the filter tank. A suction port is provided at the top of the pump body one, and the suction port is fixedly connected to the impregnation tank. A drain port is provided at the right end of the pump body one, and the drain port is fixedly connected to the filter tank. A second pump body is fixedly installed at the right end of the filter tank. An inlet port is provided at the left end of the second pump body two, and the inlet port is fixedly connected to the filter tank. A connecting plate is fixedly connected inside the filter tank, and a filter screen is provided inside the connecting plate. A protective cover is fixedly installed at the top of the inner wall of the filter tank, and a motor is fixedly installed inside the protective cover. The output end of the motor is rotatably connected to the protective cover. A rotating rod is fixedly connected to the lower end of the motor output end, and the rotating rod is rotatably connected to the filter tank. Multiple sliding rods are slidably sleeved inside the rotating rod. A top block is fixedly connected to the left end of each sliding rod, and the top block contacts the filter screen. A connecting ring is fixedly connected to the outer side of each sliding rod. By designing this filtration mechanism, the impregnation liquid can be filtered and purified.

[0011] Preferably, a return pipe is provided at the top of the pump body two, and the return pipe is fixedly connected to the impregnation tank. By designing the return pipe, the impregnation liquid can be transported into the impregnation tank.

[0012] Preferably, a second spring is provided on the outer side of the slide rod, one end of the second spring is fixedly connected to the connecting ring, and the other end of the second spring is fixedly connected to the rotating rod. By designing the second spring, the elastic force of the second spring can be applied to the connecting ring.

[0013] Compared with related technologies, the traction impregnation device for 3D printing of continuous fiber reinforced composite materials provided by the present invention has the following beneficial effects: This invention provides a traction impregnation device for 3D printing of continuous fiber reinforced composite materials. By designing guide rollers, the material conveying can be guided, while the material conveyed can be pressed down by pressure rollers. The height of the pressure rollers is adjustable, allowing adjustment of the material conveying tension. This ensures that the material is completely immersed in the impregnation liquid and avoids material curling and wrinkling from affecting the impregnation process. Furthermore, the insertion and engagement of the ball and the slot can limit the stationary rotating shaft, thereby limiting the position of the pressure rollers and preventing the pressure rollers from shifting and affecting the material impregnation effect.

[0014] This invention provides a traction impregnation device for 3D printing of continuous fiber reinforced composite materials. Through the design of a pump body, the impregnation liquid inside the impregnation tank can be extracted and then transported to the interior of a filter tank. The impregnation liquid is filtered and purified by the filter screen, preventing impurities from affecting the subsequent impregnation effect on the material. Furthermore, the filtered impregnation liquid can be returned to the impregnation tank by a second pump body, achieving circulation and improving the filtration effect. During filtration, a motor drives a rotating rod, a sliding rod, and a top block to rotate. The top block collidees with the filter screen, and due to the filter screen's elasticity, vibration can dislodge blockages, preventing clogging and ensuring smooth liquid flow. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A three-dimensional sectional view of the impregnation tank structure; Figure 3 For the present invention Figure 2 Enlarged view of point A in the image; Figure 4 For the present invention Figure 3 Enlarged view of point B in the image; Figure 5 For the present invention Figure 2 A three-dimensional sectional view of the filter tank in the middle; Figure 6 For the present invention Figure 5 Enlarged view of point C in the image.

[0016] Numbering on the map: 1. Impregnation tank; 2. Support rod; 3. Bracket; 4. Guide roller; 5. Cover plate; 6. Filter tank; 7. Drain outlet; 8. Tensioning mechanism; 9. Filtering mechanism; 81. Fixed base; 82. Gear; 83. Screw; 84. Sealing ring; 85. Screw sleeve; 86. Connecting frame; 87. Pressure roller; 88. Guide rod; 89. Gear ring; 891. Rotating shaft; 892. Handle; 893. Slot; 894. 895. Clamping block; 896. Fixing rod; 897. First spring; 91. Pump body one; 92. Suction port; 93. Drain port; 94. Pump body two; 95. Inlet port; 96. Return pipe; 97. Connecting plate; 98. Filter screen; 99. Protective cover; 991. Motor; 992. Rotating rod; 993. Slide rod; 994. Top block; 995. Connecting ring; 996. Second spring. Detailed Implementation

[0017] Please see Figure 1 , Figure 2 A traction impregnation device for 3D printing of continuous fiber reinforced composite materials includes an impregnation tank 1. Multiple evenly distributed support rods 2 are fixedly connected to both ends of the impregnation tank 1. A bracket 3 is fixedly connected to the outer side of each support rod 2, and a guide roller 4 is rotatably connected to the inner side of each bracket 3. A cover plate 5 is fixedly connected to the top of the impregnation tank 1, and a filter tank 6 is fixedly connected to the bottom of the impregnation tank 1. A drain outlet 7 is fixedly connected to the bottom of the filter tank 6. A tensioning mechanism 8 is provided on the impregnation tank 1, and a filtering mechanism 9 is provided on the filter tank 6.

[0018] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4The tensioning mechanism 8 includes a fixed base 81. The lower end of the cover plate 5 is fixedly connected to the fixed base 81. Two symmetrically distributed gears 82 are rotatably connected inside the fixed base 81. A screw 83 is fixedly connected to the lower end of each gear 82. A sealing ring 84 is rotatably sleeved on the outer side of the screw 83. The sealing ring 84 is fixedly connected to the fixed base 81. The sealing ring 84 is made of rubber. By designing the sealing ring 84, the connection between the screw 83 and the fixed base 81 can be sealed. A threaded sleeve 85 is threadedly connected to the outer side. A connecting frame 86 is fixedly connected to the lower end of the threaded sleeve 85. A pressure roller 87 is rotatably connected to the inner side of the connecting frame 86. A guide rod 88 is slidably sleeved inside the connecting frame 86. The guide rod 88 is fixedly connected to a fixed seat 81. A gear ring 89 meshes with the outer side of the gear 82. The gear ring 89 is rotatably connected to the fixed seat 81. A rotating shaft 891 is fixedly connected to the top of the gear ring 89. The rotating shaft 891 is rotatably connected to the cover plate 5. A handle 892 is fixedly connected to the top. A groove 893 is formed on the outer surface of the rotating shaft 891. A retaining ball 894 is movably fitted inside the groove 893. There are multiple grooves 893, which are evenly distributed in a ring on the outer surface of the rotating shaft 891. By designing multiple grooves 893, the retaining ball 894 can roll into different positions within the grooves 893. A retaining block 895 is movably fitted outside the retaining ball 894, and the retaining block 895 is slidably connected to the cover plate 5. The clamping block 895 has a fixed rod 896 slidably sleeved inside, and the fixed rod 896 is fixedly connected to the cover plate 5. A first spring 897 is provided on the outside of the fixed rod 896. One end of the first spring 897 is fixedly connected to the clamping block 895, and the other end of the first spring 897 is fixedly connected to the cover plate 5. By designing the first spring 897, the elastic force of the first spring 897 can act on the clamping block 895. By designing the tensioning mechanism 8, the tension of the material conveying can be adjusted.

[0019] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6The filtration mechanism 9 includes a pump body 91, which is fixedly installed at the left end of the filter tank 6. A suction port 92 is provided at the top of the pump body 91 and is fixedly connected to the impregnation tank 1. A drain port 93 is provided at the right end of the pump body 91 and is fixedly connected to the filter tank 6. A second pump body 94 is fixedly installed at the right end of the filter tank 6. An inlet 95 is provided at the left end of the second pump body 94. A return pipe 96 is provided at the top of the second pump body 94 and is fixedly connected to the impregnation tank 1. By designing the return pipe 96, the impregnation liquid can be transported into the impregnation tank 1. The inlet 95 is fixedly connected to the filter tank 6. A connecting plate 97 is fixedly connected inside the filter tank 6. A filter screen 98 is provided inside the connecting plate 97. A protective cover 99 is fixedly installed at the top of the inner wall of the filter tank 6. A motor 991 is fixedly installed inside the filter 99. The output end of the motor 991 is rotatably connected to the cover 99. A rotating rod 992 is fixedly connected to the lower end of the output end of the motor 991. The rotating rod 992 is rotatably connected to the filter tank 6. Multiple sliding rods 993 are slidably sleeved inside the rotating rod 992. A top block 994 is fixedly connected to the left end of the sliding rod 993. The top block 994 contacts the filter screen 98. A connecting ring 995 is fixedly connected to the outer side of the sliding rod 993. A second spring 996 is provided on the outer side of the sliding rod 993. One end of the second spring 996 is fixedly connected to the connecting ring 995, and the other end of the second spring 996 is fixedly connected to the rotating rod 992. By designing the second spring 996, the elastic force of the second spring 996 can act on the connecting ring 995. By designing the filter mechanism 9, the impregnation liquid can be filtered and purified.

[0020] Working principle: During use, the material is conveyed through the guide roller 4 and contacts the lower end of the pressure roller 87. The material can be impregnated by the impregnation liquid inside the impregnation tank 1. When the handle 892 is turned, the handle 892 drives the rotating shaft 891 to rotate, the rotating shaft 891 drives the gear ring 89 to rotate, the gear ring 89 drives the gear 82 to rotate, the gear 82 drives the screw 83 to rotate, causing the screw sleeve 85 to make threaded movement. The screw sleeve 85 drives the connecting frame 86 to move, and the connecting frame 86 slides along the guide rod 88. At the same time, the connecting frame 86 drives the pressure roller 87 to move down, so that the pressure roller 87 presses down on the material. The conveying tension of the material can be adjusted, so that the material can be completely immersed in the impregnation liquid and the curling and wrinkling of the material can be avoided from affecting the impregnation.

[0021] When the rotating shaft 891 rotates, the arc surface of the groove 893 on the outer surface of the rotating shaft 891 will squeeze and push the ball 894. The ball 894 will push the pressing block 895 to move horizontally. The pressing block 895 will slide along the fixed rod 896 and squeeze the first spring 897. When the rotating shaft 891 stops rotating, the elastic action of the first spring 897 will give the pressing block 895 a reverse thrust, which can push the ball 894 into the groove 893 in another position. At this time, the rotating shaft 891 can be limited, which in turn can limit the toothed ring 89, gear 82 and screw 83, and thus limit the position of the pressure roller 87, so as to avoid the offset movement of the pressure roller 87 from affecting the impregnation effect of the material.

[0022] During the impregnation process, pump body 91 operates simultaneously. Pump body 91 draws impregnation liquid from the impregnation tank 1 through suction port 92. The impregnation liquid is then fed into the filter tank 6 through drain port 93. Under the action of connecting plate 97 and filter screen 98, the impregnation liquid can be filtered and purified. After filtration, the impregnation liquid passes through filter screen 98 and is then drawn into the inlet 95 on the left side of pump body 94. Subsequently, the impregnation liquid is returned to the impregnation tank 1 through return pipe 96, which can filter and purify the impregnation liquid and prevent impurities inside the impregnation liquid from affecting the subsequent impregnation effect on the material.

[0023] While the impregnation solution is being filtered, the motor 991 operates simultaneously. The output of the motor 991 drives the rotating rod 992 to rotate, which in turn drives the sliding rod 993 to rotate. The sliding rod 993 then drives the top block 994 to rotate. The rotating top block 994 comes into contact with the filter screen 98. When the top block 994 is compressed, it causes the sliding rod 993 to slide horizontally along the rotating rod 992. The sliding rod 993 then drives the connecting ring 995 to move horizontally and compress the second spring 996. The top block 994 can collide with the filter screen 98. Since the filter screen 98 is elastic, it can vibrate, which can shake off the blockage and prevent the filter screen 98 from becoming clogged and affecting the liquid flow.

Claims

1. A traction impregnation device for 3D printing of continuous fiber reinforced composite materials, comprising an impregnation tank (1), characterized in that: Multiple evenly distributed support rods (2) are fixedly connected to both the left and right ends of the impregnation tank (1). A bracket (3) is fixedly connected to the outside of the support rod (2). A guide roller (4) is rotatably connected to the inside of the bracket (3). A cover plate (5) is fixedly connected to the top of the impregnation tank (1). A filter tank (6) is fixedly connected to the bottom of the impregnation tank (1). A drain outlet (7) is fixedly connected to the bottom of the filter tank (6). A tensioning mechanism (8) is provided on the impregnation tank (1). A filter mechanism (9) is provided on the filter tank (6).

2. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 1, characterized in that: The tensioning mechanism (8) includes a fixed seat (81). The lower end of the cover plate (5) is fixedly connected to the fixed seat (81). The fixed seat (81) is rotatably connected to two symmetrically distributed gears (82). The lower end of the gears (82) is fixedly connected to a screw (83). The outer side of the screw (83) is connected to a threaded sleeve (85). The lower end of the threaded sleeve (85) is fixedly connected to a connecting frame (86). The inner side of the connecting frame (86) is rotatably connected to a pressure roller (87). The inner side of the connecting frame (86) is slidably fitted with a guide rod (88). The guide rod (88) is fixedly connected to the fixed seat (81). The outer side of the gears (82) is meshed with a toothed ring (89). The toothed ring (89) is rotatably connected to the fixed seat (81). A rotating shaft (891) is fixedly connected to the top of the toothed ring (89). The rotating shaft (891) is rotatably connected to the cover plate (5). A handle (892) is fixedly connected to the top of the rotating shaft (891). A slot (893) is provided on the outer surface of the rotating shaft (891). A ball (894) is movably sleeved inside the slot (893). A pressing block (895) is movably sleeved outside the ball (894). The pressing block (895) is slidably connected to the cover plate (5). A fixing rod (896) is slidably sleeved inside the pressing block (895). The fixing rod (896) is fixedly connected to the cover plate (5).

3. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 2, characterized in that: A sealing ring (84) is rotatably sleeved on the outside of the screw (83), and the sealing ring (84) is fixedly connected to the fixed seat (81). The sealing ring (84) is made of rubber.

4. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 2, characterized in that: The number of the slots (893) is multiple, and the multiple slots (893) are evenly distributed in a ring on the outer surface of the rotating shaft (891).

5. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 2, characterized in that: A first spring (897) is provided on the outside of the fixing rod (896). One end of the first spring (897) is fixedly connected to the abutment block (895), and the other end of the first spring (897) is fixedly connected to the cover plate (5).

6. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 1, characterized in that: The filtration mechanism (9) includes a pump body (91), which is fixedly installed on the left end of the filter tank (6). A suction port (92) is provided on the top of the pump body (91), and the suction port (92) is fixedly connected to the impregnation tank (1). A drain port (93) is provided on the right end of the pump body (91), and the drain port (93) is fixedly connected to the filter tank (6). A second pump body (94) is fixedly installed on the right end of the filter tank (6), and an inlet port (95) is provided on the left end of the second pump body (94). The inlet port (95) is fixedly connected to the filter tank (6). A connecting plate (97) is fixedly connected inside the filter tank (6). The filter is equipped with a filter screen (98). A protective cover (99) is fixedly installed on the top of the inner wall of the filter tank (6). A motor (991) is fixedly installed inside the protective cover (99). The output end of the motor (991) is rotatably connected to the protective cover (99). A rotating rod (992) is fixedly connected to the lower end of the output end of the motor (991). The rotating rod (992) is rotatably connected to the filter tank (6). Multiple sliding rods (993) are slidably sleeved inside the rotating rod (992). A top block (994) is fixedly connected to the left end of the sliding rod (993). The top block (994) is in contact with the filter screen (98). A connecting ring (995) is fixedly connected to the outer side of the sliding rod (993).

7. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 6, characterized in that: The top of the second pump body (94) is provided with a return pipe (96), which is fixedly connected to the impregnation tank (1).

8. The traction impregnation device for 3D printing of continuous fiber reinforced composite materials according to claim 6, characterized in that: A second spring (996) is provided on the outside of the slide bar (993). One end of the second spring (996) is fixedly connected to the connecting ring (995), and the other end of the second spring (996) is fixedly connected to the rotating rod (992).

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