Constant-temperature gum dipping device for composite material pultrusion equipment

Abstract

The utility model relates to a constant-temperature gum dipping device for composite material pultrusion equipment, which comprises a gum dipping box, the gum dipping box comprises a gum dipping box bottom plate, gum dipping box side plates surrounding the top of the gum dipping box bottom plate, and gum dipping grooves formed in the gum dipping box side plates; according to the constant-temperature glue dipping device for the composite material pultrusion equipment, the liquid inlet assembly is arranged at the bottom of the glue dipping box, when the temperature of resin glue in the glue dipping tank is too high, cold fluid is introduced, and the cold fluid cools the resin glue in the glue dipping tank through the first flow channel and the second flow channel; when the temperature of resin glue in the glue dipping tank is too low, hot fluid is introduced, and the hot fluid passes through the first flow channel and the second flow channel to heat the resin glue in the glue dipping tank, so that it is ensured that the resin glue in the glue dipping tank is in a constant-temperature state, immersion and attachment of yarn are facilitated, and the performance of subsequent finished products is improved; and the condition of non-uniform quality is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pultrusion equipment, and particularly relates to a constant temperature dipping device for composite material pultrusion equipment. Background Art

[0002] The pultrusion process is a method for continuously producing composite material profiles. It is an automated production process in which the untwisted glass fiber roving and other continuous reinforcement materials, polyester surface felt, etc. on the creel are impregnated with resin, and then passed through a forming mold that maintains a certain cross-sectional shape. After curing and forming in the mold, the pultruded products are continuously ejected from the mold, thereby forming pultruded products.

[0003] The products produced by pultrusion process have higher tensile strength than ordinary steel, and the resin-rich layer on the surface gives them good corrosion resistance. Therefore, they are the best products to replace steel in projects with corrosive environments. They are widely used in transportation, electrical engineering, electrical insulation, chemical industry, mining, ocean, boats, corrosive environments and various fields of life and civil use.

[0004] like Figure 1 Figure 2 shows a schematic diagram of the pultrusion process. The pultrusion process typically consists of the following steps: glass fiber roving arrangement – impregnation – preforming – extrusion molding and curing – pulling – cutting – and final product. Impregnation is a key step in the pultrusion process. During this process, the glass fiber roving or its spun material, under external traction, first passes through an impregnation box to saturate the fibers with a resin solution. This step aims to enhance the material's mechanical properties, resulting in higher strength and greater durability. After impregnation, the reinforcing material is fully utilized to improve the product's strength. The fiber and resin combination is better able to withstand external forces, thereby enhancing the quality and performance of the final product.

[0005] In actual production applications, if the temperature of the resin compound in the dipping box is too low, the viscosity of the upper and lower layers of the compound in the dipping box is different, and after the untwisted glass fiber roving and other continuous reinforcing materials, polyester surface felt, etc. enter the dipping box, the surface adhesion of the compound will be uneven, the curing speed will be slow, the surface of the product will be rough and dull, and there will be defects such as surface grooves; if the temperature of the resin compound in the dipping box is too high, the viscosity of the resin compound will decrease, thereby affecting its impregnation effect on the fiber. In this case, defects such as dry yarn and white spots are likely to appear, which not only affects the appearance quality of the product, but may also affect its performance and service life. Utility Model Content

[0006] The utility model provides a constant temperature dipping device for composite material pultrusion equipment, which solves the defect in the prior art that the temperature of the resin material in the dipping box is too low or too high, which not only affects the appearance quality of the product, but also affects the product performance and service life.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a constant temperature impregnation device for composite material pultrusion equipment, which comprises:

[0008] A dipping box, comprising a dipping box bottom plate, a dipping box side plate arranged around the top of the dipping box bottom plate, and a dipping tank formed in the dipping box side plate;

[0009] a first flow channel, the first flow channel being opened in the bottom plate of the dipping box;

[0010] a second flow channel, the second flow channel being provided in the side panel of the dipping box and being in communication with the first flow channel;

[0011] Fluid flows through the first flow channel.

[0012] Optimally, it further includes a liquid inlet assembly connected to the first flow channel, a liquid discharge assembly connected to the liquid inlet assembly, and a wire assembly arranged on the top of the dipping box.

[0013] Optimally, the liquid inlet assembly includes a liquid inlet connected to the first flow channel, a liquid outlet connected to the second flow channel, a first liquid inlet pipe and a second liquid inlet pipe connected to the liquid inlet, a liquid outlet pipe connected to the liquid outlet, a first valve installed on the first liquid inlet pipe, a second valve installed on the second liquid inlet pipe, and a fourth valve installed on the liquid outlet pipe.

[0014] Optimally, the drainage assembly includes an inflation tube connected to the liquid outlet tube, a drainage tube connected to the liquid inlet, a liquid collector connected to the drainage tube, a third valve installed on the drainage tube, and a fifth valve installed on the inflation tube.

[0015] Optimally, the wire assembly includes a first mounting bracket slidably connected to the top of the dipping box, a first roller rotatably mounted on the first mounting bracket, a second mounting bracket liftably arranged on the top of the dipping box, and a second roller rotatably mounted on the second mounting bracket.

[0016] Optimally, the wire assembly also includes a first guide groove opened on the circumference of the first roller, a second guide groove opened on the circumference of the second roller, an avoidance portion obliquely arranged on the inner side of the dipping box side plate, and a transition portion arranged at the connection between the dipping box side plates.

[0017] Optimally, the first flow channel is in a scroll shape, and the second flow channel is in a spiral shape.

[0018] Optimally, the second roller is lower than the first roller.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a constant temperature dipping device for composite material pultrusion equipment, by arranging a liquid inlet component at the bottom of the dipping box. When the temperature of the resin material in the dipping tank is too high, a cold fluid is introduced, and the cold fluid passes through the first flow channel and the second flow channel to cool the resin material in the dipping tank; when the temperature of the resin material in the dipping tank is too low, a hot fluid is introduced, and the hot fluid passes through the first flow channel and the second flow channel to heat the resin material in the dipping tank, which is beneficial to the dipping of the yarn and the adhesion of the resin glue, thereby improving the performance of the subsequent finished product and avoiding the problem of uneven quality.

[0021] Moreover, the arrangement of the drainage component is such that when the cold fluid and the hot fluid alternate, the fluid remaining in the first flow channel and the second flow channel is discharged in advance by the drainage component, so as to avoid the cold fluid and the hot fluid from mixing and affecting the cooling or heating of the molten resin in the dipping tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the process of the existing pultrusion process;

[0023] Figure 2 It is a cross-sectional view of the utility model;

[0024] Figure 3 It is a structural diagram of the utility model;

[0025] Figure 4 This is a schematic structural diagram of the first flow channel of the utility model;

[0026] Figure 5 It is a cross-sectional view of the utility model;

[0027] Description of reference numerals:

[0028] 1. Dipping box bottom plate; 2. Dipping box side plate; 3. Dipping tank; 4. First flow channel; 5. Second flow channel; 6. Liquid inlet; 7. Liquid outlet; 8. First liquid inlet pipe; 9. Second liquid inlet pipe; 10. First valve; 11. Second valve; 12. Liquid discharge pipe; 13. Third valve; 14. Liquid collector; 15. Liquid outlet pipe; 16. Fourth valve; 17. Inflating pipe; 18. Fifth valve; 19. First mounting bracket; 20. First roller; 21. Second mounting bracket; 22. Second roller; 23. First guide groove; 24. Second guide groove; 25. Avoidance portion; 26. Transition portion. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0030] like Figure 2-5, which is a schematic diagram of a constant temperature dipping device for composite material pultrusion equipment of the present invention, including a dipping box, a first flow channel 4, a second flow channel 5, a liquid inlet component, a liquid discharge component and a wire component.

[0031] The dipping box includes a dipping box bottom plate 1, a dipping box side plate 2 and a dipping tank 3. The dipping box side plates have four parts, and an integral ring is arranged on the top of the dipping box bottom plate 1. A dipping tank 3 is formed between the dipping box bottom plate 1 and the dipping box side plates 2 for storing resin glue in a molten state.

[0032] The first flow channel 4 is opened on the inner side of the bottom plate 1 of the dipping box. The first flow channel 4 is in a spiral shape, and has an inner port located at the center and an outer port located at the outermost side. The second flow channel 5 is opened on the inner side of the dipping box side plate 2. The second flow channel 5 is in a spiral shape and is connected to the outer port of the outermost side of the first flow channel 4. Therefore, the first flow channel 4 and the second flow channel 5 are connected to form a main flow channel. The fluid flows into the inner port at the center of the first flow channel 4, flows from bottom to top, and finally flows out of the second flow channel 5, which has a cooling or heating effect on the molten resin in the dipping tank 3, preventing the resin glue temperature in the dipping tank 3 from being too high or too low, which would affect the dipping of the yarn, and improving the uniformity and consistency of the yarn after dipping.

[0033] The liquid inlet assembly includes a liquid inlet 6, a liquid outlet 7, a first liquid inlet pipe 8, a second liquid inlet pipe 9, a first valve 10, a second valve 11, a liquid outlet pipe 15 and a fourth valve 16. The liquid inlet 6 is opened on the bottom plate 1 of the dipping box and is connected to the inner port at the center of the first flow channel 4; the liquid outlet 7 is opened on the side plate 2 of the dipping box and is connected to the top outlet of the second flow channel 5. The fluid enters the first flow channel 4 and the second flow channel 5. When flowing in the first flow channel 4 and the second flow channel 5, it will fully and continuously contact the dipping box, thereby improving the uniformity and consistency of the yarn dipping.

[0034] Fluids include cold fluids (cold water, cold oil) and hot fluids (hot water, hot oil). By flowing through the first and second flow channels 4 and 5, the fluids are in full and continuous contact with the dipping box, improving the uniformity and consistency of the yarn after dipping. For cost-saving reasons, water is more suitable as the fluid.

[0035] The first liquid inlet pipe 8 is connected to the liquid inlet 6, and the first valve 10 is installed on the first liquid inlet pipe 8. The fluid enters the first liquid inlet pipe 8 and then flows into the first flow channel 4. The first valve 10 is used to control the opening and closing of the first liquid inlet pipe 8 to prevent the fluid in the first liquid inlet pipe 8 from flowing back.

[0036] The second liquid inlet pipe 9 is connected to the liquid inlet 6. The second valve 11 is installed on the second liquid inlet pipe 9. The fluid enters the second liquid inlet pipe 9 and then flows into the first flow channel 4. The second valve 11 is used to control the opening and closing of the second liquid inlet pipe 9 to prevent the fluid in the second liquid inlet pipe 9 from flowing back.

[0037] The liquid outlet pipe 15 is connected to the liquid outlet 7, and the fourth valve 16 is installed on the liquid outlet pipe 15. The fluid passes through the first flow channel 4 and the second flow channel 5 and is discharged from the liquid outlet pipe 15. The fourth valve 16 is used to control the opening and closing of the liquid outlet pipe 15 to prevent the fluid in the liquid outlet pipe 15 from flowing back.

[0038] In actual application, hot fluid (hot water or hot oil) is introduced into the first liquid inlet pipe 8. At this time, the first valve 10 is opened and the second valve 11 is closed. The hot fluid is introduced into the first liquid inlet pipe 8, and then flows into the first flow channel 4 and the second flow channel 5, and finally discharged from the liquid outlet 7 and the liquid outlet pipe 15. When the hot fluid flows in the first flow channel 4 and the second flow channel 5, the molten resin in the dipping tank 3 is heated and heated to avoid the molten resin temperature being too low, resulting in different viscosities in the upper and lower layers, which affects the adhesion of the yarn.

[0039] When the temperature of the molten resin in the dipping tank 3 is too high, it needs to be cooled. Otherwise, the viscosity of the resin will decrease, thereby affecting its wetting effect on the fiber. In this case, defects such as dry yarn and white spots are likely to appear, which not only affects the appearance quality of the product, but also its performance and service life. At this time, a cold fluid (cold water or cold oil) is introduced from the second liquid inlet pipe 9. At this time, the second valve 11 is opened and the first valve 10 is closed. The cold fluid is introduced into the second liquid inlet pipe 9 and then flows into the first flow channel 4 and the second flow channel 5. Finally, it is discharged from the liquid outlet 7 and the liquid outlet pipe 15. When the cold fluid flows in the first flow channel 4 and the second flow channel 5, it cools the molten resin in the dipping tank 3.

[0040] The drain assembly is connected to the inlet assembly. When alternating between cold and hot fluids, the drain assembly must preemptively drain any remaining fluid from the first and second flow channels 4 and 5 to prevent mixing of the cold and hot fluids, which could affect the cooling or heating of the molten resin in the dipping tank 3. The drain assembly includes a drain pipe 12, a third valve 13, a liquid collector 14, an air charging pipe 17, and a fifth valve 18. The inlet direction is opposite to the outlet direction.

[0041] The drain pipe 12 is connected to the liquid inlet 6. A liquid collector 14 is attached to the bottom of the drain pipe 12 to collect the discharged fluid for reuse and cost savings. The liquid inlet 6, the first liquid inlet pipe 8, the second liquid inlet pipe 9, and the drain pipe 12 are connected via a cross-shaped water pipe joint. A third valve 13 is installed on the drain pipe 12 to control its opening and closing.

[0042] The inflation tube 17 is connected to the liquid outlet tube 15. A fifth valve 18 is mounted on the inflation tube 17 to control its opening and closing. The inflation tube 17 is connected to an external air pump. When alternating between cold and hot fluids, the first valve 10, second valve 11, and fourth valve 16 are closed, and the third valve 13 and fifth valve 18 are opened. The air pump then vents air into the inflation tube 17, draining any fluid remaining in the second flow channel 5 and first flow channel 4 into the liquid collector 14.

[0043] The wire assembly is arranged at the top of the dipping box and is used to guide the yarn into the dipping tank 3, thereby completing the adhesion of the resin sizing material on the yarn and improving the performance of the yarn. The wire assembly includes a first mounting bracket 19, a first roller 20, a second mounting bracket 21, a second roller 22, a first guide groove 23, a second guide groove 24, an avoidance portion 25 and a transition portion 26. There are two first mounting brackets 19, each of which is slidably connected to the top of the dipping box by means of a slide rail and a slider. A cylinder connected to the first mounting bracket 19 is fixed to the top of the dipping box to push the first mounting bracket 19 to move on the top of the dipping box (the slide rail, slider and cylinder are conventional structures in the prior art and are not shown in the figure).

[0044] The moving direction of the dipping box is perpendicular to the conveying direction of the yarn. By moving the dipping box, it is ensured that the yarn passes through the first roller 20 and the second roller 22 smoothly during the yarn guiding.

[0045] The first mounting bracket 19 is shaped like a "[" (a character), with its opening facing upward. A rotating shaft is secured within the first mounting bracket 19, and a first roller 20 is rotatably mounted on the rotating shaft via a bearing. A first V-shaped guide groove 23 is defined on the outer circumference of the first roller 20. The yarn is wound around the first roller 20 and placed within the first guide groove 23. As the yarn moves forward, the first guide groove 23 prevents the yarn from slipping off the sides due to the limiting action of the yarn.

[0046] The second mounting frame 21 is set on the top of the dipping box through a lifting cylinder. The lifting cylinder drives the second mounting frame 21 to move up and down, thereby adjusting the vertical position of the second roller 22, adjusting the depth of the yarn immersed in the molten resin, and then changing the amount of resin adhesion on the yarn according to actual needs (the lifting cylinder is not shown in the figure).

[0047] The second mounting bracket 21 is shaped like a "[" (a character), with its opening facing downward. A rotating shaft is secured within the second mounting bracket 21, and a second roller 22 is rotatably mounted on the rotating shaft via a bearing. A second V-shaped guide groove 24 is defined on the outer circumference of the second roller 22. The yarn is wound around the second roller 22 and positioned within the second guide groove 24. As the yarn moves forward, the second guide groove 24 prevents the yarn from slipping off the sides due to the restraining action of the yarn.

[0048] The avoidance portion 25 is obliquely opened on the inner side of the dipping box side plate 2 to avoid the yarn immersed in the dipping tank 3, so as to prevent the yarn from contacting and wearing with the inner side of the dipping box and cutting the yarn.

[0049] The transition portion 26 is provided at the connection of the side plates 2 of the dipping box. The transition portion 26 is arc-shaped so as to avoid the second flow channel 5 in the side plates 2 of the dipping box.

[0050] The principle of the constant temperature dipping device for composite material pultrusion equipment of this utility model is as follows:

[0051] By arranging a liquid inlet component at the bottom of the dipping box, when the temperature of the resin glue in the dipping tank 3 is too high, a cold fluid is introduced, and the cold fluid passes through the first flow channel 4 and the second flow channel 5 to cool the resin glue in the dipping tank 3; when the temperature of the resin glue in the dipping tank 3 is too low, a hot fluid is introduced, and the hot fluid passes through the first flow channel 4 and the second flow channel 5 to heat the resin glue in the dipping tank 3, which is beneficial to the immersion of the yarn and the adhesion of the resin glue, improves the performance of the subsequent finished product, and avoids the occurrence of uneven quality. A temperature sensor is provided in the dipping tank 3 for real-time detection of the temperature of the internal resin glue.

[0052] Moreover, the arrangement of the drainage component is such that when the cold fluid and the hot fluid alternate, the fluid remaining in the first flow channel 4 and the second flow channel 5 is discharged in advance by the drainage component, so as to avoid the cold fluid and the hot fluid from mixing and affecting the cooling or heating of the molten resin in the dipping tank 3.

[0053] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A constant temperature impregnation device for composite material pultrusion equipment, characterized in that: It includes: A dipping box, comprising a dipping box bottom plate (1), a dipping box side plate (2) arranged around the top of the dipping box bottom plate (1), and a dipping tank (3) formed in the dipping box side plate (2); A first flow channel (4), the first flow channel (4) being opened in the bottom plate (1) of the dipping box; A second flow channel (5), the second flow channel (5) is opened in the side plate (2) of the dipping box and is connected to the first flow channel (4); Fluid flows through the first flow channel (4).

2. The constant temperature impregnation device for composite material pultrusion equipment according to claim 1, characterized in that: It also includes a liquid inlet assembly connected to the first flow channel (4), a liquid discharge assembly connected to the liquid inlet assembly, and a wire assembly arranged on the top of the dipping box.

3. The constant temperature impregnation device for composite material pultrusion equipment according to claim 2, characterized in that: The liquid inlet assembly comprises a liquid inlet (6) connected to the first flow channel (4), a liquid outlet (7) connected to the second flow channel (5), a first liquid inlet pipe (8) and a second liquid inlet pipe (9) connected to the liquid inlet (6), a liquid outlet pipe (15) connected to the liquid outlet (7), a first valve (10) installed on the first liquid inlet pipe (8), a second valve (11) installed on the second liquid inlet pipe (9), and a fourth valve (16) installed on the liquid outlet pipe (15).

4. The constant temperature impregnation device for composite material pultrusion equipment according to claim 3, characterized in that: The liquid discharge assembly comprises an air filling pipe (17) connected to a liquid outlet pipe (15), a liquid discharge pipe (12) connected to the liquid inlet (6), a liquid collector (14) connected to the liquid discharge pipe (12), a third valve (13) installed on the liquid discharge pipe (12), and a fifth valve (18) installed on the air filling pipe (17).

5. The constant temperature impregnation device for composite material pultrusion equipment according to claim 2, characterized in that: The wire assembly comprises a first mounting frame (19) slidably connected to the top of the dipping box, a first roller (20) rotatably mounted on the first mounting frame (19), a second mounting frame (21) movably arranged on the top of the dipping box, and a second roller (22) rotatably mounted on the second mounting frame (21).

6. The constant temperature impregnation device for composite material pultrusion equipment according to claim 5, characterized in that: The wire assembly further comprises a first guide groove (23) provided on the circumference of the first roller (20), a second guide groove (24) provided on the circumference of the second roller (22), a relief portion (25) obliquely arranged on the inner side of the dipping box side plate (2), and a transition portion (26) provided at the connection between the dipping box side plates (2).

7. The constant temperature impregnation device for composite material pultrusion equipment according to claim 1, characterized in that: The first flow channel (4) is in a scroll shape, and the second flow channel (5) is in a spiral shape.

8. The constant temperature impregnation device for composite material pultrusion equipment according to claim 5, characterized in that: The second roller (22) is lower than the first roller (20).

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