Thermoplastic continuous fiber preheating yarn spreading equipment

Abstract

The utility model relates to the technical field of composite materials, and discloses thermoplastic continuous fiber preheating and yarn spreading equipment which comprises a rack and a drying oven, the drying oven is installed on the rack, an adjusting roller and two yarn guide rollers are installed on the rack, the two yarn guide rollers are located on the two sides of the drying oven respectively, and the adjusting roller is installed on the rack. The adjusting roller is arranged on one side of one yarn guide roller, and a plurality of heating assemblies are installed on the inner wall of the drying oven. The heating assembly comprises a speed reducer, two heating rollers and two connecting plates. According to the thermoplastic continuous fiber preheating and yarn spreading equipment, the speed reducer, the heating rollers and the connecting plate are arranged, the output shaft of the speed reducer drives the connecting plate to rotate to a desired angle, the heating rollers are installed on the connecting plate so as to adjust the position between the heating rollers, and the positions of the heating rollers are changed; various choices are provided for the heating contact area, the preheating time and the like of the heating roller and the yarn bundle, and the yarn can be fully preheated by changing the winding mode of the yarn and the travel in the drying oven.

Description

Technical Field

[0001] The utility model relates to the technical field of composite materials, in particular to a thermoplastic continuous fiber preheating and yarn spreading device. Background Art

[0002] Continuous Fiber Reinforced Thermoplastic Composites Panels (CFRTP) are a series of products that use a unique process to produce products with high strength, high modulus, high impact resistance, fatigue resistance, good thermal stability, corrosion resistance, low warpage, and environmentally friendly recyclability.

[0003] Continuous fiber reinforced thermoplastic composites have excellent mechanical properties, strong processability and stable chemical properties, such as high tensile strength and flexural strength, excellent high and low temperature impact performance; in recent years, driven by the concepts of environmental protection and energy saving, their development and application have made great progress, and the corresponding manufacturing technology has also been continuously improved and enhanced. They are widely used in aerospace, containers, refrigerated trucks, and lightweight automotive structural parts.

[0004] In order to ensure that the fiber precursor does not fuzz or break during the production process and to improve the surface quality to meet the requirements of subsequent processing, the fiber surface is usually coated with a coupling agent and the fibers are integrated into a bundle for twisting. However, during the CFRTP process, due to poor fiber fluidity, the fibers entering the impregnation die are often uneven, which directly leads to unstable fiber content. Instead of being directly compounded with the polymer during preheating and yarn spreading, the sheet is prone to bubbling, dry yarn, and yarn leakage, which reduces the density and mechanical properties of the composite material, thereby affecting the quality of the product. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a thermoplastic continuous fiber preheating and yarn spreading device, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solution: a thermoplastic continuous fiber preheating yarn spreading device, comprising: a frame and an oven, the oven is installed on the frame, an adjusting roller and two yarn guide rollers are installed on the frame, and the two yarn guide rollers are respectively located on both sides of the oven, the adjusting roller is arranged on one side of one of the yarn guide rollers, and a plurality of heating components are installed on the inner wall of the oven;

[0007] The heating assembly includes a reducer, two heating rollers and two connecting plates, the two heating rollers are installed between the connecting plates, the two connecting plates are installed with mounting shafts on their opposite surfaces, and the mounting shafts are rotatably connected to the oven, the output shaft of the reducer is connected to one end of one of the mounting shafts, and the output shaft of the reducer is installed with a first hand wheel.

[0008] Preferably, movable grooves are symmetrically opened on the frame, and adjustment plates are installed at positions corresponding to the two movable grooves on the top of the frame, movable seats are installed on the inner walls of the two movable grooves, the inner walls of the movable seats are rotatably connected to one end of the adjusting roller, the top of the movable seat is connected to a connecting block, the inner wall of the connecting block is rotatably connected to a threaded adjusting rod, and the surface of the threaded adjusting rod is threadedly connected to the inner wall of the adjusting plate.

[0009] Preferably, a second hand wheel is installed on the top of the threaded adjustment rod.

[0010] Preferably, the oven comprises a first box body and a second box body, the second box body is connected to the inner wall of the frame, and the second box body is connected to the top of the second box body.

[0011] Preferably, a plurality of cylinders are installed on both sides of the frame, and telescopic ends of the plurality of cylinders are connected to the surface of the second box body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The thermoplastic continuous fiber preheating and yarn spreading equipment is provided with a reducer, a heating roller and a connecting plate. The output shaft of the reducer drives the connecting plate to rotate to a desired angle. The heating roller is installed on the connecting plate to adjust the position between the heating rollers. The position of the heating roller changes, so that the heating contact area between the heating roller and the yarn bundle, the preheating time, etc. provide a variety of options. By changing the winding method of the yarn and the travel in the oven, the yarn can be fully preheated.

[0014] 2. The thermoplastic continuous fiber preheating yarn spreading equipment is provided with an adjusting plate, a movable seat, a connecting block and a threaded adjusting rod. The fiber yarn bundle enters the oven through the yarn guide roller, bypasses the heating roller and is then led to the adjusting roller through the yarn guide roller. The second hand wheel with the threaded adjusting rod is rotated, and the threaded adjusting rod is threadedly connected to the adjusting plate, thereby making the threaded adjusting rod drive the connecting block and the movable seat to move, so that the adjusting roller can be moved up and down to change the tension of the yarn bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the side section structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the yarn bundle winding structure inside the oven of the utility model;

[0017] Figure 3 This is a partial enlarged structural diagram of the threaded adjustment rod of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the internal structure of the oven viewed from above.

[0019] In the figure: 1, frame; 2, oven; 201, first box; 202, second box; 3, adjusting roller; 4, yarn guide roller; 5, reducer; 6, heating roller; 7, connecting plate; 8, mounting shaft; 9, first hand wheel; 10, second hand wheel; 11, movable groove; 12, adjusting plate; 13, movable seat; 14, connecting block; 15, threaded adjusting rod; 16, cylinder; 17, output shaft. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 A thermoplastic continuous fiber preheating and yarn spreading device comprises: a frame 1 and an oven 2, the oven 2 is mounted on the frame 1, an adjusting roller 3 and two yarn guide rollers 4 are mounted on the frame 1, and the two yarn guide rollers 4 are respectively located on both sides of the oven 2, the adjusting roller 3 is arranged on one side of one of the yarn guide rollers 4, and a plurality of heating components are installed on the inner wall of the oven 2;

[0022] The heating assembly includes a reducer 5, two heating rollers 6 and two connecting plates 7. The two heating rollers 6 are installed between the connecting plates 7. The two connecting plates 7 have mounting shafts 8 installed on their facing away surfaces, and the mounting shafts 8 are rotatably connected to the oven 2. The output shaft of the reducer 5 is connected to one end of one of the mounting shafts 8, and a first hand wheel 9 is installed on the output shaft of the reducer 5.

[0023] Movable grooves 11 are symmetrically provided on the frame 1, and adjustment plates 12 are installed at positions corresponding to the two movable grooves 11 on the top of the frame 1, movable seats 13 are installed on the inner walls of the two movable grooves 11, the inner wall of the movable seat 13 is rotatably connected to one end of the adjusting roller 3, the top of the movable seat 13 is connected to a connecting block 14, the inner wall of the connecting block 14 is rotatably connected to a threaded adjusting rod 15, the surface of the threaded adjusting rod 15 is threadedly connected to the inner wall of the adjusting plate 12, a second hand wheel 10 is installed on the top of the threaded adjusting rod 15, rotating the second hand wheel drives the threaded adjusting rod 15 to rotate, the threaded adjusting rod 15 is threadedly connected to the adjusting plate 12, so that the threaded adjusting rod 15 can be raised and lowered, the threaded adjusting rod 15 drives the connecting block 14 to move, and the connecting block 14 drives the movable seat 13 to move, so that the adjusting roller can be moved up and down to change the tension of the yarn bundle.

[0024] The oven 2 includes a first box body 201 and a second box body 202. The first box body 201 is connected to the inner wall of the frame 1, and the second box body 202 is connected to the top of the first box body 201. Multiple cylinders 16 are installed on both sides of the frame 1, and the telescopic ends of the multiple cylinders 16 are connected to the surface of the second box body 202. The lifting and lowering of the cylinders 16 are controlled to achieve the opening and closing of the first box body 201 and the second box body 202 of the oven 2.

[0025] The output shaft of the reducer 5 drives the connecting plate 7 to rotate to a desired angle. The heating roller 6 is installed on the connecting plate 7 to adjust the position of the heating roller 6. The position of the heating roller 6 changes, so that the heating contact area between the heating roller 6 and the yarn bundle and the preheating time provide a variety of options. By changing the winding method of the yarn and the travel of the yarn in the oven 2, the yarn can be fully preheated.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermoplastic continuous fiber preheating and yarn spreading device, characterized in that: include: A frame (1) and an oven (2), wherein the oven (2) is mounted on the frame (1), an adjusting roller (3) and two yarn guide rollers (4) are mounted on the frame (1), and the two yarn guide rollers (4) are respectively located on both sides of the oven (2), the adjusting roller (3) is arranged on one side of one of the yarn guide rollers (4), and a plurality of heating components are mounted on the inner wall of the oven (2); The heating assembly comprises a reducer (5), two heating rollers (6) and two connecting plates (7), the two heating rollers (6) are mounted between the connecting plates (7), the two connecting plates (7) have mounting shafts (8) mounted on their opposite surfaces, and the mounting shafts (8) are rotatably connected to the oven (2), the output shaft of the reducer (5) is connected to one end of one of the mounting shafts (8), and a first hand wheel (9) is mounted on the output shaft of the reducer (5).

2. A thermoplastic continuous fiber preheating and yarn spreading device according to claim 1, characterized in that: The frame (1) is symmetrically provided with movable grooves (11), and adjustment plates (12) are installed at positions corresponding to the two movable grooves (11) on the top of the frame (1), movable seats (13) are installed on the inner walls of the two movable grooves (11), the inner wall of the movable seat (13) is rotatably connected to one end of the adjustment roller (3), the top of the movable seat (13) is connected to a connecting block (14), the inner wall of the connecting block (14) is rotatably connected to a threaded adjustment rod (15), and the surface of the threaded adjustment rod (15) is threadedly connected to the inner wall of the adjustment plate (12).

3. A thermoplastic continuous fiber preheating and yarn spreading device according to claim 2, characterized in that: A second hand wheel (10) is installed on the top of the threaded adjustment rod (15).

4. The thermoplastic continuous fiber preheating and yarn spreading device according to claim 1, characterized in that: The oven (2) comprises a first box body (201) and a second box body (202), wherein the first box body (201) is connected to the inner wall of the frame (1), and the second box body (202) is connected to the top of the first box body (201).

5. A thermoplastic continuous fiber preheating and yarn spreading device according to claim 4, characterized in that: A plurality of cylinders (16) are installed on both sides of the frame (1), and telescopic ends of the plurality of cylinders (16) are connected to the surface of the second box body (202).

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