A kind of pva carbon fiber felt processing pre-impregnation device

Abstract

The utility model discloses a kind of pva carbon fibre felt processing is used pre-impregnation device, belong to pva carbon fibre felt processing technical field, including pre-impregnation box and the carbon fibre felt main part conveying in pre-impregnation box, the inner wall bottom end of pre-impregnation box is symmetrically rotated and is installed with down-pressing positioning roller, and the top of both ends of pre-impregnation box is separately provided with exhaust component and scraping component, wherein the central position of pre-impregnation box is rotatably installed with shaft, stirring vane is fixedly installed on the shaft in annular array, synchronous rotating mechanism is installed between down-pressing positioning roller and shaft, this pva carbon fibre felt processing is used pre-impregnation device and makes carbon fibre felt main part in the bottom of pre-impregnation box by down-pressing positioning roller fully pre-soaking, rotation occurs in the process that down-pressing positioning roller is contacted with pva carbon fibre felt surface, down-pressing positioning roller is driven stirring vane on the shaft by synchronous wheel and synchronous belt in the process of rotation, and immersion liquid is mixed and stirred, improve the soaking efficiency of pva carbon fibre felt.

Description

Technical Field

[0001] This utility model belongs to the field of PVA carbon fiber felt processing technology, specifically relating to a prepreg device for PVA carbon fiber felt processing. Background Technology

[0002] PVA carbon fiber felt is a carbon fiber nonwoven material that uses polyvinyl alcohol (PVA) as a binder. It combines the high performance of carbon fiber with the easy processing characteristics of PVA, giving it unique material advantages. PVA carbon fiber felt prepreg is a semi-finished material made by pre-impregnating and compounding polyvinyl alcohol (PVA) modified carbon fiber felt with a resin system. It combines the mechanical properties of carbon fiber with the processing characteristics of resin matrix. When carbon fiber felt is directly immersed in the soaking tank, the carbon fiber felt surface tends to come into contact with the bottom of the tank, affecting the wetting effect of the contact surface. A pressing and fixing structure is used to fix the position of carbon fiber felt in the soaking tank. However, due to compression, the pressed area cannot be fully wetted by the soaking liquid.

[0003] Patent application number 202221172006.3 discloses a prepreg device for processing PVA carbon fiber felt, comprising: an immersion tank, wherein fixed columns are fixed to both inner walls of the immersion tank, and a lower fixed frame is connected to the other end of the fixed columns; an upper cover frame is mounted on the upper end of the lower fixed frame; a mesh is laid on the inner sides of both the lower fixed frame and the upper cover frame; a locking post is fixed to the lower surface of the upper cover frame; and a locking groove is provided at the connection between the lower fixed frame and the locking post; and a motor, which is bolted to one outer wall of the immersion tank, and the output shaft of the motor is connected to a rotating shaft.

[0004] The aforementioned pre-impregnation device for processing PVA carbon fiber felt uses a fixed frame to clamp and fix the PVA carbon fiber felt before placing it into an impregnation tank for pre-impregnation. Firstly, the PVA carbon fiber felt needs to be fixed and disassembled each time it is impregnated. Secondly, the fixed frame cannot impregnate the rolled PVA carbon fiber felt raw material, resulting in low impregnation efficiency of the PVA carbon fiber felt. Utility Model Content

[0005] (1) Technical problems to be solved To address the shortcomings of existing technologies, the purpose of this utility model is to provide a pre-impregnation device for PVA carbon fiber felt processing. This pre-impregnation device aims to solve the problems of the existing technology, which requires fixing and disassembling the PVA carbon fiber felt during each impregnation process. Furthermore, the fixing frame cannot impregnate the rolled PVA carbon fiber felt raw material, resulting in low impregnation efficiency of the PVA carbon fiber felt.

[0006] (2) Technical solution To solve the above-mentioned technical problems, this utility model provides a prepreg device for processing PVA carbon fiber felt, including a prepreg tank and a carbon fiber felt body conveyed in the prepreg tank. The bottom of the inner wall of the prepreg tank is symmetrically and rotatably mounted with a pressure positioning roller, and the top of both ends of the prepreg tank are respectively provided with an exhaust assembly and a scraping assembly. A rotating shaft is rotatably mounted at the center of the prepreg tank, and stirring blades are fixedly mounted in a ring array on the rotating shaft. A synchronous rotation mechanism is installed between the pressure positioning roller and the rotating shaft.

[0007] When using this technical solution, a downward positioning roller is rotatably installed at the bottom of the inner wall of the prepreg tank. The downward positioning roller ensures that the carbon fiber felt body is fully pre-soaked at the bottom of the prepreg tank. At the same time, the downward positioning roller rotates during contact with the surface of the PVA carbon fiber felt. During the rotation, the downward positioning roller drives the stirring blades on the rotating shaft through the synchronous wheel and synchronous belt to mix and stir the soaking liquid, thereby improving the soaking efficiency of the PVA carbon fiber felt. By setting an exhaust component and a scraping component at both ends of the prepreg tank, two extrusion rollers expel air from the carbon fiber felt body, reducing the air residue inside the carbon fiber felt body. At the same time, the elastic plates in the mounting grooves on the side walls of the two scrapers push the protrusions to contact the side walls of the carbon fiber felt body, scraping off the excess soaking liquid from the side walls of the carbon fiber felt body, thereby reducing the liquid residue after soaking the carbon fiber felt body.

[0008] Preferably, both ends of the pressing positioning roller are glued and fixed with baffles, and both ends of the pressing positioning roller and the rotating shaft are rotatably inserted into the prepreg tank through sealed bearings.

[0009] Furthermore, the exhaust assembly includes two extrusion rollers symmetrically rotatably inserted into the prepreg chamber, with the two extrusion rollers respectively abutting against both sides of the outer wall of the carbon fiber felt body.

[0010] Furthermore, the scraping assembly includes scrapers symmetrically welded and fixed to the inner wall of the prepreg tank, with a scraping groove between the two scrapers for accommodating the carbon fiber felt body.

[0011] Furthermore, each of the two scrapers has a mounting groove at its proximal end, and a protrusion that contacts the outer wall of the carbon fiber felt body is slidably inserted into the mounting groove.

[0012] Furthermore, an elastic piece is embedded in the mounting groove, and the two ends of the elastic piece abut against the mounting groove and the protrusion, respectively.

[0013] Furthermore, the synchronous rotation mechanism includes a synchronous wheel fixedly sleeved on the rotating shaft and the lower positioning roller, and a synchronous belt meshing between the two synchronous wheels.

[0014] (3) Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a downward positioning roller rotatably mounted on the bottom of the inner wall of the prepreg tank. The downward positioning roller ensures that the carbon fiber felt body is fully pre-soaked at the bottom of the prepreg tank. At the same time, the downward positioning roller rotates during contact with the surface of the PVA carbon fiber felt. During the rotation, the downward positioning roller drives the stirring blades on the rotating shaft through the synchronous wheel and synchronous belt to mix and stir the soaking liquid, thereby improving the soaking efficiency of the PVA carbon fiber felt. By setting an exhaust assembly and a scraping assembly at both ends of the prepreg tank, two extrusion rollers expel air from the carbon fiber felt body, reducing the amount of residual air inside the carbon fiber felt body. At the same time, the elastic plates in the mounting grooves on the side walls of the two scrapers push the protrusions to contact the side walls of the carbon fiber felt body, scraping off the excess soaking liquid from the side walls of the carbon fiber felt body, thus reducing the amount of liquid residue after soaking the carbon fiber felt body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A; Figure 3 This is a cross-sectional view of the prepreg tank in this utility model; Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0017] The markings in the attached diagram are as follows: 1. Prepreg tank; 2. Pressing positioning roller; 3. Carbon fiber felt body; 4. Extrusion roller; 5. Baffle; 6. Stirring blade; 7. Scraper; 8. Rotating shaft; 9. Synchronous belt; 10. Synchronous pulley; 11. Mounting groove; 12. Scraping groove; 13. Protrusion; 14. Elastic sheet. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This specific embodiment is a prepreg device for processing PVA carbon fiber felt, and its structural schematic diagram is shown below. Figures 1 to 4 As shown, the assembly includes a prepreg tank 1 and a carbon fiber felt body 3 conveyed in the prepreg tank 1. A downward positioning roller 2 is symmetrically and rotatably installed on the bottom of the inner wall of the prepreg tank 1, and an exhaust assembly and a scraping assembly are respectively provided at the top of both ends of the prepreg tank 1. A rotating shaft 8 is rotatably installed at the center of the prepreg tank 1, and stirring blades 6 are fixedly installed in a ring array on the rotating shaft 8. A synchronous rotation mechanism is installed between the downward positioning roller 2 and the rotating shaft 8. The resin concentration of the soaking solution is controlled at 25-40wt%, and the impregnation speed is 0.5-2m / min. The impregnated PVA carbon fiber felt is conveyed to a heat treatment equipment for post-processing. The heat treatment equipment of the PVA carbon fiber felt processing line is existing technology and will not be described in detail here.

[0020] Both ends of the pressure positioning roller 2 are glued and fixed with baffles 5, and both ends of the pressure positioning roller 2 and the rotating shaft 8 are rotatably inserted into the prepreg tank 1 through sealed bearings. The carbon fiber felt body 3 passes through the exhaust assembly, the pressure positioning roller 2 and the scraper 7 in sequence. The pressure positioning roller 2 makes the carbon fiber felt body 3 fully pre-soaked at the bottom of the prepreg tank 1. At the same time, the pressure positioning roller 2 rotates during the contact with the surface of the PVA carbon fiber felt. During the rotation, the pressure positioning roller 2 drives the stirring blade 6 on the rotating shaft 8 through the synchronous wheel 10 and the synchronous belt 9 to mix and stir the soaking liquid, thereby improving the soaking efficiency of the PVA carbon fiber felt.

[0021] The exhaust assembly includes two symmetrically rotating extrusion rollers 4 inserted into the prepreg tank 1. The two extrusion rollers 4 abut against the outer sides of the carbon fiber felt body 3. The scraping assembly includes scrapers 7 symmetrically welded and fixed to the inner wall of the prepreg tank 1. A scraping groove 12 for accommodating the carbon fiber felt body 3 is provided between the two scrapers 7. An installation groove 11 is provided at the proximal end of each of the two scrapers 7. A protrusion 13 that contacts the outer wall of the carbon fiber felt body 3 is slidably inserted into the installation groove 11. An elastic piece 14 is embedded in the installation groove 11. The two ends of the elastic piece 14 abut against the installation groove 11 and the protrusion 13, respectively. The synchronous rotation mechanism includes a synchronous wheel 10 fixedly sleeved on the rotating shaft 8 and the pressing positioning roller 2, and a synchronous belt 9 meshing between the two synchronous wheels. The synchronous rotation mechanism has two sets at both ends of the rotating shaft 8, so that the two pressing positioning rollers 2 drive the rotating shaft 8 to rotate synchronously and in the same direction during the rotation process. Working principle: When using the device of this technical solution, the carbon fiber felt body 3 passes through the exhaust assembly, the pressure positioning roller 2 and the scraper 7 in sequence. The pressure positioning roller 2 makes the carbon fiber felt body 3 fully pre-soaked at the bottom of the prepreg tank 1. At the same time, the pressure positioning roller 2 rotates during the contact with the surface of the PVA carbon fiber felt. During the rotation, the pressure positioning roller 2 drives the stirring blade 6 on the rotating shaft 8 through the synchronous wheel 10 and the synchronous belt 9 to mix and stir the soaking liquid. The two extrusion rollers 4 extrude the carbon fiber felt body 3, reducing the air residue inside the fibers of the carbon fiber felt body 3. At the same time, the elastic piece 14 in the mounting groove 11 on the side wall of the two scrapers 7 pushes the protrusion 13 to contact the side wall of the carbon fiber felt body 3, scraping off the excess soaking liquid on the side wall of the carbon fiber felt body 3, reducing the liquid residue after soaking the carbon fiber felt body 3.

[0022] All technical features in this embodiment can be freely combined according to actual needs.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prepreg apparatus for processing PVA carbon fiber felt, characterized in that, The device includes a prepreg tank (1) and a carbon fiber felt body (3) conveyed in the prepreg tank (1). The bottom of the inner wall of the prepreg tank (1) is symmetrically and rotatably equipped with a pressure positioning roller (2). The top of both ends of the prepreg tank (1) are respectively provided with an exhaust assembly and a scraping assembly. A rotating shaft (8) is rotatably installed at the center of the prepreg tank (1). A stirring blade (6) is fixedly installed in a ring array on the rotating shaft (8). A synchronous rotation mechanism is installed between the pressure positioning roller (2) and the rotating shaft (8).

2. The prepreg device for processing PVA carbon fiber felt according to claim 1, characterized in that, Both ends of the pressing positioning roller (2) are glued and fixed with baffles (5), and both ends of the pressing positioning roller (2) and the rotating shaft (8) are rotatably inserted into the prepreg tank (1) through sealed bearings.

3. The prepreg device for processing PVA carbon fiber felt according to claim 1, characterized in that, The exhaust assembly includes two extrusion rollers (4) that are symmetrically rotated and inserted into the prepreg tank (1), and the two extrusion rollers (4) respectively abut against the outer walls of the carbon fiber felt body (3).

4. The prepreg device for processing PVA carbon fiber felt according to claim 1, characterized in that, The scraping assembly includes scrapers (7) symmetrically welded and fixed to the inner wall of the prepreg tank (1), and a scraping groove (12) for accommodating the carbon fiber felt body (3) is provided between the two scrapers (7).

5. The prepreg device for processing PVA carbon fiber felt according to claim 4, characterized in that, Both scrapers (7) have mounting grooves (11) at their proximal ends, and protrusions (13) that contact the outer wall of the carbon fiber felt body (3) are slidably inserted into the mounting grooves (11).

6. The prepreg apparatus for processing PVA carbon fiber felt according to claim 5, characterized in that, An elastic piece (14) is embedded in the mounting groove (11), and the two ends of the elastic piece (14) abut against the mounting groove (11) and the protrusion (13) respectively.

7. The prepreg device for processing PVA carbon fiber felt according to claim 1, characterized in that, The synchronous rotation mechanism includes a synchronous wheel (10) fixedly sleeved on the rotating shaft (8) and the pressing positioning roller (2) and a synchronous belt (9) meshing between the two synchronous wheels.

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