Continuous placement molding device for thermoplastic resin composite fiber bundles

Abstract

The present invention provides a continuous placement and molding device for thermoplastic resin composite fiber bundles, belonging to the technical field of composite fiber bundle placement equipment, comprising a support frame, a reeling unit connected to the left wall of the support frame, a traction unit provided on one side of the reeling unit, a compounding unit provided on the other side of the traction unit, a pressing and molding unit provided corresponding to the compounding unit, a heating unit provided on one side of the pressing and molding unit, a flattening unit and a cooling unit provided on both sides of the heating unit, and a placement roller provided on one side of the cooling unit. The present invention adopts the above-mentioned continuous placement and molding device for thermoplastic resin composite fiber bundles, solving the problem of cumbersome operation of the prior art in which the placement equipment and high-temperature welding are performed separately. By using the structures of each part in coordination with each other, the placement and compounding are integrated, ensuring uniform fiber tension and improving placement efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of composite fiber bundle placement equipment, in particular to a thermoplastic resin composite fiber bundle continuous placement and molding device. Background Art

[0002] Composite materials based on thermoplastic resins. Commonly used thermoplastic resins include polypropylene, polycarbonate, polyamide, and polysulfone. The main reinforcing fibers are short glass fibers, carbon fibers, textile fibers, and other fillers. The fiber volume content is generally around 20% to 30%, and can reach a maximum of 40% to 55%. In most cases, the fibers and fillers are randomly arranged without direction. The main reinforcing effect of the fibers is to increase strength and wear resistance, and improve the heat resistance and creep resistance of the matrix. Thermoplastic resins reinforced with glass and carbon fibers can increase their tensile strength and flexural modulus by 2 to 6 times, but their impact strength is reduced. They are widely used in the automotive, chemical, electronics, and aviation industries.

[0003] However, when existing thermoplastic resin composite materials and fiber bundles are laid, they need to be laid through external laying equipment and then welded through high-temperature heating. This makes the operation cumbersome on the one hand and the welding time too long on the other hand, resulting in low laying efficiency. Summary of the Invention

[0004] To solve the above problems, the present invention discloses a continuous placement and molding device for thermoplastic resin composite fiber bundles, comprising a support frame, a unwinding unit connected to the left wall of the support frame, a traction unit provided on one side of the unwinding unit, a composite unit provided on the other side of the traction unit, a pressing and molding unit provided corresponding to the composite unit, a heating unit provided on one side of the pressing and molding unit, a flattening unit and a cooling unit provided on both sides of the heating unit respectively, and a placement roller provided on one side of the cooling unit.

[0005] Preferably, the unwinding unit consists of a first unwinding roller and a second unwinding roller, the first unwinding roller and the second unwinding roller are both fixedly connected to the side wall of the support frame by bolts, and the first unwinding roller is arranged above the second unwinding roller.

[0006] Preferably, a guide unit is provided between the first unwinding roller and the traction unit, and the guide unit includes a guide roller, which is provided at a lower middle position between the first unwinding roller and the traction unit, and the guide roller is fixedly connected to the side wall of the support frame by bolts.

[0007] Preferably, the traction unit includes a first traction roller and a second traction roller, the first traction roller is arranged on one side of the guide roller, and the second traction roller is arranged on one side of the second unwinding roller.

[0008] Preferably, the composite unit includes a composite roller, the composite roller is fixedly connected to the support frame by bolts, and the composite roller is arranged in the middle of the traction unit.

[0009] Preferably, the press forming unit includes a press table and a cylinder assembly, the press table is an I-shaped structure, and the press table and the cylinder assembly are both fixedly connected to the side wall of the support frame, and the press table is arranged below the cylinder assembly.

[0010] Preferably, the cylinder assembly consists of a pushing cylinder and a pressing plate, the output end of the pushing cylinder is connected to the pressing plate, and the position of the pressing plate corresponds to the position of the pressing platform.

[0011] Preferably, the leveling unit includes a leveling roller, which is fixedly connected to the side wall of the support frame by bolts. There are two leveling rollers, which are symmetrically arranged with respect to each other.

[0012] Preferably, the heating unit includes a heating box, a feed port and a discharge port are respectively provided on both sides of the middle part of the heating box, and a heating component is symmetrically arranged inside the heating box, and the heating component includes a clamping plate and a telescopic cylinder, the output end of the telescopic cylinder is fixedly connected to the clamping plate, and a plurality of heating tubes are arranged inside the clamping plate.

[0013] Preferably, the cooling unit includes two cooling rollers, and the two cooling rollers are symmetrically connected to the side walls of the support frame by bolts.

[0014] The present invention discloses the following technical effects:

[0015] (1) The present invention utilizes a push cylinder to push the pressing plate to move longitudinally. At the same time, the corresponding arrangement of the I-shaped pressing table and the pressing plate can realize the pressing and molding of the thermoplastic resin composite fiber bundle. The I-shaped pressing table is fixed on the support frame to offset the thrust brought by the push cylinder and the gravity of the pressing plate, thereby ensuring the stability of the overall structure.

[0016] (2) The present invention provides telescopic cylinders at the top and bottom of the heating box to drive the upper and lower clamping plates to move relative to each other, thereby ensuring the continuity of the thermoplastic resin composite fiber bundle. At the same time, a plurality of heating tubes are arranged inside the clamping plates to ensure that the surface of the thermoplastic resin composite fiber bundle is heated evenly. The melted thermoplastic resin composite fiber bundle is cooled and solidified by water cooling through a cooling roller, thereby ensuring the molding of the thermoplastic resin composite fiber bundle.

[0017] (3) The present invention solves the problem of cumbersome operation of the prior art in which the laying equipment and high-temperature welding are carried out step by step through the structural arrangement of the first unwinding roller, the second unwinding roller, the guide roller, the first pulling roller, the second pulling roller and the composite roller, and on the other hand ensures uniform tension between the thermoplastic resin composite material and the fiber bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure provided in Example 1 of the present invention;

[0019] Figure 2 A schematic diagram of the heating box structure provided in Example 1 of the present invention;

[0020] Description of reference numerals:

[0021] 1-support frame, 2-first unwinding roller, 3-second unwinding roller, 4-guide roller, 5-first traction roller, 6-second traction roller, 7-compounding roller, 8-pressing table, 9-pressing plate, 10-pushing cylinder, 11-leveling roller, 12-heating box, 13-cooling roller, 14-laying roller, 15-feed port, 16-telescopic cylinder, 17-clamping plate, 18-heating tube, 19-discharge port. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively. Example

[0023] like Figure 1 As shown, the present invention provides a continuous placement and molding device for thermoplastic resin composite fiber bundles, including a support frame 1, a unwinding unit is connected to the left wall of the support frame 1, a traction unit is provided on one side of the unwinding unit, a compounding unit is provided on the other side of the traction unit, a pressing and molding unit is provided corresponding to the compounding unit, a heating unit is provided on one side of the pressing and molding unit, a flattening unit and a cooling unit are provided on both sides of the heating unit respectively, and a placement roller 14 is provided on one side of the cooling unit.

[0024] Specifically, the unwinding unit consists of a first unwinding roller 2 and a second unwinding roller 3. The first unwinding roller 2 and the second unwinding roller 3 are both fixedly connected to the side wall of the support frame 1 by bolts, and the first unwinding roller 2 is arranged above the second unwinding roller 3. The first unwinding roller 2 is used to place the fiber bundle, and the second unwinding roller 3 is used to place the thermoplastic resin composite material.

[0025] Specifically, a guide unit is provided between the first unwinding roller 2 and the traction unit. The guide unit includes a guide roller 4 for ensuring uniform tension of the fiber bundle. The guide roller 4 is provided at a position below the middle of the first unwinding roller 2 and the traction unit, and the guide roller 4 is fixedly connected to the side wall of the support frame 1 by bolts.

[0026] Specifically, the traction unit includes a first traction roller 5 and a second traction roller 6. The first traction roller 5 is arranged on one side of the guide roller 4, and the second traction roller 6 is arranged on one side of the second unwinding roller 3. The first traction roller 5 is used to pull the fiber bundle onto the composite unit, and the second traction roller 6 is used to pull the thermoplastic resin composite material onto the composite unit.

[0027] Specifically, the composite unit includes a composite roller 7, which is fixedly connected to the support frame 1 by bolts, and the composite roller 7 is arranged in the middle of the traction unit for preliminarily composite the fiber bundle and the thermoplastic resin composite material.

[0028] Specifically, the press forming unit includes a press table 8 and a cylinder assembly. The press table 8 is an I-shaped structure, and both the press table 8 and the cylinder assembly are fixedly connected to the side wall of the support frame 1. The press table 8 is arranged below the cylinder assembly.

[0029] More specifically, the cylinder assembly consists of a pushing cylinder 10 and a pressing plate 9 . The output end of the pushing cylinder 10 is connected to the pressing plate 9 , and the position of the pressing plate 9 corresponds to the position of the pressing platform 8 .

[0030] Specifically, the flattening unit includes a flattening roller 11, which is fixedly connected to the side wall of the support frame 1 by bolts. There are two flattening rollers 11, which are symmetrically arranged with each other, and a gap is left between the two flattening rollers 11 for flattening the thermoplastic resin composite fiber bundle after compounding.

[0031] Specifically, the heating unit includes a heating box 12, and a feed port 15 and a discharge port 19 are respectively provided on both sides of the middle part of the heating box 12, and a heating component is symmetrically arranged inside the heating box 12. The heating component includes a clamping plate 17 and a telescopic cylinder 16. The output end of the telescopic cylinder 16 is fixedly connected to the clamping plate 17, and a plurality of heating tubes 18 are arranged inside the clamping plate 17.

[0032] Specifically, the cooling unit includes two cooling rollers 13 , which are symmetrically connected to the side wall of the support frame 1 through bolts and are used to cool the melted thermoplastic resin composite fiber bundle.

[0033] Working principle: When in use, the fiber bundle on the first unwinding roller 2 is guided by the guide roller 4 to the first traction roller 5, and at the same time, the thermoplastic resin composite material on the second unwinding roller 3 is transported to the second traction roller 6. The fiber bundle on the first traction roller 5 and the thermoplastic resin composite material on the second traction roller 6 are simultaneously pulled to the composite roller 7, preliminarily compounded on the composite roller 7, and then transported to the pressing table 8 through the composite roller 7. At this time, the pushing cylinder 10 is started to push the pressing plate 9 to the pressing table 8 for compression molding, and then enters the leveling roller 11 for leveling. The feed port 15 on the left side of the heating box 12 enters the interior of the heating component, and at the same time, the symmetrically arranged telescopic cylinders 16 are running, and the two clamping plates 17 clamp the thermoplastic resin composite fiber bundle. The external control device controls the heating tube 18 for heating and melting. After melting, it is water-cooled through the discharge port 19 to the cooling roller 13. After cooling is completed, it is laid through the laying roller 14.

[0034] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above-mentioned embodiment, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A thermoplastic resin composite fiber bundle continuous placement molding device, characterized in that: The invention comprises a support frame (1), wherein a reeling unit is connected to the left wall of the support frame (1), a traction unit is provided on one side of the reeling unit, a composite unit is provided on the other side of the traction unit, a pressing unit is provided at the composite unit, a heating unit is provided on one side of the pressing unit, a flattening unit and a cooling unit are provided on both sides of the heating unit, and a laying roller (14) is provided on one side of the cooling unit; the reeling unit is composed of a first reeling roller (2) and a second reeling roller (3), the first reeling roller (2) and the second reeling roller (3) are both fixedly connected to the side wall of the support frame (1) by bolts, and the first reeling roller (2) is provided above the second reeling roller (3); the first reeling roller (2) is used for placing the fiber bundle, and the second reeling roller (3) is used for placing the thermoplastic resin composite material; the pressing unit comprises a pressing table (8) and The cylinder assembly is an I-shaped structure, and the pressing platform (8) and the cylinder assembly are fixedly connected to the side wall of the support frame (1), and the pressing platform (8) is arranged below the cylinder assembly; the cylinder assembly is composed of a pushing cylinder (10) and a pressing plate (9), the output end of the pushing cylinder (10) is connected to the pressing plate (9), and the position of the pressing plate (9) corresponds to the position of the pressing platform (8); the heating unit includes a heating box (12), and a feed port (15) and a discharge port (19) are respectively opened on both sides of the middle of the heating box (12), and a heating assembly is symmetrically arranged inside the heating box (12), and the heating assembly includes a clamping plate (17) and a telescopic cylinder (16), the output end of the telescopic cylinder (16) is fixedly connected to the clamping plate (17), and a plurality of heating tubes (18) are arranged inside the clamping plate (17).

2. The thermoplastic resin composite fiber bundle continuous placement molding device according to claim 1, characterized in that: A guide unit is provided between the first unwinding roller (2) and the traction unit, and the guide unit comprises a guide roller (4). The guide roller (4) is provided at a position below the middle of the first unwinding roller (2) and the traction unit, and the guide roller (4) is fixedly connected to the side wall of the support frame (1) by means of bolts.

3. The thermoplastic resin composite fiber bundle continuous placement molding device according to claim 2, characterized in that: The traction unit comprises a first traction roller (5) and a second traction roller (6), wherein the first traction roller (5) is arranged on one side of the guide roller (4), and the second traction roller (6) is arranged on one side of the second unwinding roller (3).

4. The thermoplastic resin composite fiber bundle continuous placement molding device according to claim 1, characterized in that: The composite unit comprises a composite roller (7), the composite roller (7) is fixedly connected to the support frame (1) by means of bolts, and the composite roller (7) is arranged in the middle of the traction unit.

5. The thermoplastic resin composite fiber bundle continuous placement molding device according to claim 1, characterized in that: The flattening unit comprises a flattening roller (11), wherein the flattening roller (11) is fixedly connected to the side wall of the support frame (1) by means of bolts, and the number of the flattening rollers (11) is two, and the two flattening rollers (11) are symmetrically arranged above and below each other.

6. The thermoplastic resin composite fiber bundle continuous placement molding device according to claim 1, characterized in that: The cooling unit comprises two cooling rollers (13), and the two cooling rollers (13) are symmetrically connected to the side wall of the support frame (1) via bolts.

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