A roller impregnation device and method for a fabric

Abstract

An embodiment of the present application provides a roll pressing and impregnating device and a roll pressing and impregnating method for a fabric. The roll pressing and impregnating device includes: a frame; an impregnating tank disposed inside the frame; a fixed pressing roll spaced above the inner bottom of the impregnating tank, and the space between the fixed pressing roll and the inner bottom of the impregnating tank is used to press a 2.5D fabric into the impregnating tank; a moving pressing roll disposed above the inner bottom of the impregnating tank, the moving pressing roll can move up and down to press on the 2.5D fabric and can reciprocally roll to reciprocally roll press the 2.5D fabric. The embodiment of the present application solves the technical problem of the relatively long impregnation time of the traditional vacuum pressure impregnation.

Description

Technical Field

[0001] This application relates to the technical field of roll impregnation of 2.5D fabrics. Specifically, it relates to a roll impregnation device and a roll impregnation method for fabrics. Background Art

[0002] The fabric used in the 2.5D fabric / phenolic composite reinforcement is a single-layer cross-linked 2.5D braided structure, which belongs to a type of three-dimensional interlocked fabric. Although the 2.5D fabric has good integrity, due to the relatively large linear density of the yarns and the relatively tight braiding, the permeability to barium phenolic resin is poor, and it is easy to have the phenomenon that the monofilaments between the yarns cannot be impregnated.

[0003] Currently, 2.5D fabric / phenolic prepregs are prepared by vacuum pressure impregnation. The vacuum pressure impregnation / heat treatment process takes about 6 hours in total. Vacuum pressure impregnation is divided into two steps: vacuum pumping and pressurization. By pumping vacuum, the bubbles in the resin are removed to avoid the resin bringing bubbles into the fabric during impregnation. By pressurization, the wettability of the fabric is increased. The impregnation time during the vacuum pressure impregnation process is crucial for whether the impregnation is complete. If the impregnation time is too short, the fabric cannot be completely impregnated, which affects the molding of the composite material. Therefore, generally, the vacuum pressure impregnation time is relatively long. In addition, during vacuum pressure impregnation, the fabric is curled and then placed in an impregnation tooling for impregnation. After impregnation, the resin content, thickness of the fabric are uneven and the flatness is poor.

[0004] The above information disclosed in the background art is only used to enhance the understanding of the background of this application. Therefore, it may contain information on prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0005] Embodiments of this application provide a roll impregnation device and a roll impregnation method for fabrics to solve the technical problem of the relatively long impregnation time of traditional vacuum pressure impregnation.

[0006] According to the first aspect of the embodiments of this application, a roll impregnation device for fabrics is provided, including:

[0007] A frame;

[0008] An impregnation tank, arranged inside the frame;

[0009] A fixed pressure roller, arranged above the inner bottom of the impregnation tank at intervals. The interval between the fixed pressure roller and the inner bottom of the impregnation tank is used to press the 2.5D fabric into the impregnation tank;

[0010] A moving pressure roller, arranged above the inner bottom of the impregnation tank. The moving pressure roller can move up and down to press on the 2.5D fabric and can reciprocate to roll the 2.5D fabric back and forth.

[0011] According to the second aspect of the embodiments of the present application, a roll pressing and impregnating method for 2.5D fabric is provided, including the following steps:

[0012] Inject the impregnating glue into the impregnating tank and preheat the impregnating glue;

[0013] The 2.5D fabric enters from under the fixed pressure roller to the inner bottom of the impregnating tank;

[0014] The moving pressure roller moves downward and presses on the 2.5D fabric in the impregnating tank;

[0015] The moving pressure roller reciprocates to roll press the 2.5D fabric;

[0016] The impregnated 2.5D fabric moves through between two limiting pressure rollers and is pressed by the two limiting pressure rollers to remove the floating glue.

[0017] Due to the above technical solutions adopted in the embodiments of the present application, the following technical effects are achieved:

[0018] The 2.5D fabric moves through the gap between the fixed pressure roller and the inner bottom of the impregnating tank, so that the 2.5D fabric is pressed against the inner bottom of the impregnating tank by the fixed pressure roller and completely enters the impregnating glue in the impregnating tank; then, the moving pressure roller moves downward and presses on the 2.5D fabric and reciprocates to roll press the 2.5D fabric, and impregnation and defoaming are achieved by rolling the 2.5D fabric. That is, roll pressing and impregnating of the 2.5D fabric is realized through the fixed pressure roller and the moving pressure roller. During the roll pressing and impregnating process of the 2.5D fabric, by controlling the pressure and reciprocating times of the moving pressure roller, the impregnating effect of the fabric can be adjusted to achieve the effect of complete penetration of the impregnating glue; at the same time, the operation time of the roll pressing and impregnating process of the 2.5D fabric is short, and the glue content and thickness uniformity of the 2.5D fabric after roll pressing are good. Compared with the traditional vacuum pressure impregnation method, the roll pressing and impregnating equipment for 2.5D fabric in the embodiments of the present application has a shorter impregnating time, can also achieve defoaming and penetration; the overall impregnation uniformity is good. Description of the Drawings

[0019] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0020] Figure 1 is a schematic diagram of the roll pressing and impregnating equipment for 2.5D fabric in the embodiments of the present application;

[0021] Figure 2 is Figure 1 a partial schematic diagram of the roll pressing and impregnating equipment shown;

[0022] Figure 3 is Figure 1Schematic diagram of the conveying device of the roll pressing and impregnating equipment shown;

[0023] Figure 4 is Figure 1 Schematic diagram of the fixed pressing roller, movable pressing roller and limiting pressing roller of the roll pressing and impregnating equipment shown;

[0024] Figure 5 is Figure 1 Schematic diagram of the impregnating tank, pitching rotating shaft and pitching cylinder of the roll pressing and impregnating equipment shown;

[0025] Figure 6 is Figure 1 Schematic diagram of the impregnating tank, scraper, slide rail and slider of the roll pressing and impregnating equipment shown.

[0026] Reference numerals:

[0027] Frame 1, impregnating tank 21, plastic grid 22, scraper 23, slide rail 24, fixed pressing roller 31, movable pressing roller 32, limiting pressing roller 33, pitching rotating shaft 41, pitching cylinder 42, initial platform 5, conveying device 6, injection device 71, collection device 72, 8 2.5 fabric. Detailed implementation manners

[0028] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further details the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0029] Embodiment 1

[0030] As Figures 1 to 6 shown, a roll pressing and impregnating equipment for a 2.5D fabric in an embodiment of the present application includes:

[0031] Frame 1;

[0032] Impregnating tank 21, arranged inside the frame 1; wherein, the impregnating tank 21 is used to hold the impregnating glue;

[0033] Fixed pressing roller 31, arranged at an interval above the inner bottom of the impregnating tank 21, and the interval between the fixed pressing roller 31 and the inner bottom of the impregnating tank 21 is used to press the 2.5D fabric into the impregnating glue in the impregnating tank;

[0034] Movable pressing roller 32, arranged above the inner bottom of the impregnating tank, and the movable pressing roller can move up and down to press on the 2.5D fabric and can reciprocally roll to reciprocally roll press the 2.5D fabric.

[0035] The roll pressing and impregnating equipment for 2.5D fabric in the embodiments of the present application. The 2.5D fabric moves through the interval between the fixed pressure roller and the inner bottom of the impregnating tank, so as to press the 2.5D fabric against the inner bottom of the impregnating tank through the fixed pressure roller and completely enter into the impregnating glue in the impregnating tank. After that, the moving pressure roller moves downward and presses on the 2.5D fabric and reciprocates to roll press the 2.5D fabric, and impregnation and defoaming are achieved through rolling the 2.5D fabric. That is, through the fixed pressure roller and the moving pressure roller, roll pressing and impregnating of the 2.5D fabric are realized. During the roll pressing and impregnating process of the 2.5D fabric, by controlling the pressure and reciprocating times of the moving pressure roller, the impregnation effect of the fabric can be adjusted to achieve the effect of the impregnating glue being thoroughly penetrated. At the same time, the operation time of the roll pressing and impregnating process of the 2.5D fabric is short, and the glue content and thickness uniformity of the 2.5D fabric after rolling are good. Compared with the traditional vacuum pressure impregnation method, the roll pressing and impregnating equipment for 2.5D fabric in the embodiments of the present application has a shorter impregnation time, can also achieve defoaming and thorough penetration, and has good overall impregnation uniformity.

[0036] Specifically, the impregnating glue is resin.

[0037] Specifically, the pressure of the moving pressure roller is adjustable within the range of greater than or equal to 2N and less than or equal to 50N; the rolling cycle times of the moving pressure roller are set through a program.

[0038] During implementation, as Figure 1 and Figure 4 shown, there are two fixed pressure rollers 31;

[0039] The two fixed pressure rollers 31 are arranged at both ends of the impregnating tank 21 at intervals along the length direction of the impregnating tank 21, and the moving pressure roller 32 is arranged between the two fixed pressure rollers 31 and can reciprocate between the two fixed pressure rollers 31.

[0040] In this way, the 2.5D fabric impregnated once by the roll pressing and impregnating equipment is the distance between the two fixed pressure rollers, which is suitable for continuous automated production.

[0041] During implementation, as Figure 4 shown, the roll pressing and impregnating equipment further includes:

[0042] Two limit pressure rollers 33 arranged at intervals up and down, and the gap between the two limit pressure rollers 33 can be adjusted;

[0043] Wherein, the two limit pressure rollers 33 are used to squeeze the impregnated 2.5D fabric passing through between them to remove the floating glue, and the adjustment range of the gap between the two limit pressure rollers 33 is greater than or equal to 2 mm and less than or equal to 20 mm.

[0044] The two limit pressure rollers are used to squeeze the impregnated 2.5D fabric to remove the floating glue on the surface of the pre-impregnated material of the impregnated 2.5D fabric.

[0045] Specifically, the fixed pressure roller, the movable pressure roller, the limiting pressure roller and the conveyor belt together form a pressure roller device.

[0046] Specifically, the adjustment range of the gap between the two limiting pressure rollers is greater than or equal to 4 mm and less than or equal to 8 mm; or the adjustment range of the gap between the two limiting pressure rollers is greater than or equal to 4.8 mm and less than or equal to 7.6 mm.

[0047] During implementation, as Figure 2 shown, the roll pressing and impregnating equipment further includes:

[0048] A plastic mesh 22, laid on the inner bottom of the impregnation tank 21, so as to form a gap between the lower part of the 2.5D fabric and the inner bottom of the impregnation tank 21, so that the impregnating glue in the impregnation tank can impregnate the lower surface of the 2.5D fabric;

[0049] Among them, the plastic mesh 22 covers the inner bottom of the impregnation tank 21, and the value range of the side length of a single grid of the plastic mesh 22 is greater than or equal to 0.5 mm and less than or equal to 5 mm, and the value range of the thickness of the plastic mesh 22 is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0050] By laying a plastic mesh under the 2.5D fabric to form a gap between the lower part of the 2.5D fabric and the inner bottom surface of the impregnation tank, the problem that the lower surface of the 2.5D fabric is isolated from the impregnating glue and cannot be soaked is solved, realizing the non-turning-over impregnation of the 2.5D fabric, and greatly simplifying the structure of the fabric impregnation equipment.

[0051] Specifically, the plastic mesh is made of PP or PET material and can withstand temperatures exceeding 100 °C.

[0052] Specifically, the size of the plastic mesh is the same as the size of the inner bottom of the impregnation tank, and the plastic mesh covers the inner bottom of the impregnation tank.

[0053] During implementation, the roll pressing and impregnating equipment further includes:

[0054] A heating plate, arranged in the impregnation tank to preheat the impregnating glue in the impregnation tank, and the value range of the preheating temperature is greater than or equal to 25 °C and less than or equal to 80 °C.

[0055] The heating plate can be heated in zones and is covered with a plastic mesh. The presence of the heating plate can preheat the impregnating glue in the impregnation tank. The preheated impregnating glue can impregnate the 2.5D fabric faster.

[0056] During implementation, as Figure 1 and Figure 6 shown, the roll pressing and impregnating equipment further includes:

[0057] A scraper 23, movably arranged on the inner bottom of the impregnation tank 21;

[0058] A slide rail 24 and a slider in sliding fit, the slide rail 24 being arranged along the length direction of the impregnation tank 21, and the slider being fixed to the squeegee 23, so that the squeegee 23 can reciprocate along the length direction of the impregnation tank 21 to scrape off the impregnation glue on the inner bottom of the impregnation tank 21 after impregnation is completed.

[0059] During implementation, as Figure 1 and Figure 5 shown, the roll pressing and impregnation equipment further includes:

[0060] A pitching rotating shaft 41, fixed to the outer bottom of the impregnation tank 21;

[0061] A pitching air cylinder 42, the pitching rotating shaft 41 and the pitching air cylinder 42 being arranged at intervals along the length direction of the impregnation tank 21 on the outer bottom of the impregnation tank 21, so that the impregnation tank 21 can be tilted and reset.

[0062] The pitching rotating shaft and the pitching air cylinder cooperate to enable the impregnation tank to rotate about the pitching rotating shaft as the central axis, thereby realizing the tilting of the impregnation tank. Then, in cooperation with the squeegee, the slide rail and the slider, after impregnation is completed, the squeegee can scrape away the remaining impregnation glue in the impregnation tank from the inner bottom of the impregnation tank.

[0063] During implementation, as Figure 1 shown, the roll pressing and impregnation equipment further includes:

[0064] An initial platform 5, arranged inside the frame 1 and located above the impregnation tank 21; wherein, the initial platform 5 is used for placing 2.5D fabric;

[0065] A clamping mechanism and a conveying device 6, the clamping mechanism being used to connect the two ends of the 2.5D fabric to the conveying device, and the conveying device being used to convey the 2.5D fabric into the impregnation tank and for the impregnated 2.5D fabric.

[0066] Specifically, the conveying device is used to transfer the 2.5D fabric prepreg to above the impregnation tank; the conveying device is composed of a clamping device, a conveying chain, a conveying gear, a conveying idler wheel, a motor and a speed reducer that cooperate with each other. The initial platform, the clamping structure and the conveying device realize the convenient conveyance of the 2.5D fabric and provide conditions for subsequent impregnation.

[0067] During implementation, as Figure 1 shown, the roll pressing and impregnation equipment further includes a glue storage device, an injection device 71 and a collection device 72;

[0068] Among them, the glue storage device is used to store the impregnation glue, the injection device is used to inject the impregnation glue in the glue storage device into the impregnation tank, and the collection device is used to hold the impregnation glue scraped off by the squeegee.

[0069] Through a conveying device, an injection device, a collection device, an impregnation tank and a scraper, the full process of impregnating 2.5D fabric is automated, improving the impregnation efficiency and reducing manual operation. It is applicable to continuous automated production, contributing to the improvement of production efficiency and quality stability.

[0070] The impregnating glue in the glue storage device is injected into the impregnation tank through the injection device, and the injection volume is controlled by a flow pump.

[0071] Example Two

[0072] A roll pressing impregnation method for 2.5D fabric according to an embodiment of the present application includes the following steps:

[0073] Inject the impregnating glue into the impregnation tank and preheat the impregnating glue;

[0074] The 2.5D fabric enters the inner bottom of the impregnation tank from under the fixed pressing roller;

[0075] The movable pressing roller moves downward and presses on the 2.5D fabric in the impregnation tank;

[0076] The movable pressing roller rolls back and forth to roll press the 2.5D fabric;

[0077] The impregnated 2.5D fabric moves through between two limiting pressing rollers and is pressed by the two limiting pressing rollers to remove the floating glue.

[0078] In the roll pressing impregnation method for 2.5D fabric according to an embodiment of the present application, the 2.5D fabric moves through the gap between the fixed pressing roller and the inner bottom of the impregnation tank, so that the 2.5D fabric is pressed against the inner bottom of the impregnation tank by the fixed pressing roller and completely enters the impregnating glue in the impregnation tank; then, the movable pressing roller moves downward and presses on the 2.5D fabric, and the movable pressing roller rolls back and forth to roll press the 2.5D fabric; the impregnated 2.5D fabric moves through between two limiting pressing rollers and is pressed by the two limiting pressing rollers to remove the floating glue. That is, through the fixed pressing roller and the movable pressing roller, roll pressing impregnation of the 2.5D fabric is achieved. During the roll pressing impregnation process of the 2.5D fabric, by controlling the pressure and reciprocating times of the movable pressing roller, the impregnation effect of the fabric can be adjusted to achieve the effect of the impregnating glue being fully penetrated; at the same time, the operation time of the roll pressing impregnation process of the 2.5D fabric is short, and the glue content and thickness uniformity of the 2.5D fabric after roll pressing are good. Compared with the traditional vacuum pressure impregnation method, the roll pressing impregnation method for 2.5D fabric according to an embodiment of the present application has a shorter impregnation time, can also achieve defoaming and full penetration; the overall impregnation uniformity is good.

[0079] In implementation, injecting the impregnating glue into the impregnation tank specifically includes the following steps:

[0080] Inject the impregnating adhesive with a weight of not less than 20 kg and not more than 50 kg into the impregnating tank through a flow pump. Calculate the weight of the impregnating adhesive used according to the thickness of the 2.5D fabric. The range of the depth of the impregnating adhesive above the 2.5D fabric is greater than or equal to 5 mm and less than or equal to 10 mm.

[0081] During implementation, before the step of moving the impregnated 2.5D fabric through between two limiting pressure rollers and being pressed by the two limiting pressure rollers to remove the floating adhesive, it further includes:

[0082] Lift the roll-pressed 2.5D fabric prepreg, transfer it to the initial platform, and adjust the gap between the two limiting pressure rollers during the transfer process through the two limiting pressure rollers;

[0083] After the step of moving the impregnated 2.5D fabric through between two limiting pressure rollers and being pressed by the two limiting pressure rollers to remove the floating adhesive, it further includes:

[0084] Remove the impregnated 2.5D fabric prepreg on the initial platform and put it into an oven for heat treatment;

[0085] Cut the 2.5D fabric prepreg to complete the roll pressing and impregnation of the 2.5D fabric prepreg.

[0086] During implementation, the impregnating adhesive is a thermosetting phenolic resin;

[0087] The 2.5D fabric is a non-continuous fabric. The range of the width is greater than or equal to 500 mm and less than or equal to 800 mm. The range of the length is greater than 2.0 m and less than or equal to 5.0 m. The range of the thickness is greater than 2 mm and less than or equal to 20 mm.

[0088] During implementation, the range of the heat treatment temperature is greater than or equal to 80 °C and less than or equal to 120 °C. The range of the time is greater than or equal to 20 min and less than or equal to 50 min.

[0089] Specifically, the range of the heat treatment temperature is 100 °C. The range of the time is greater than or equal to 28 min and less than or equal to 50 min.

[0090] The roll pressing and impregnation method of the 2.5D fabric in the embodiment of the present application can also achieve the effect of the impregnating adhesive being soaked by the way of immersing the 2.5D fabric in the impregnating adhesive and roll pressing. The operation time of the roll pressing process of this method is short, and the overall uniformity after roll pressing is good. It is suitable for continuous automated production. Compared with vacuum pressure impregnation, the impregnation time of a single fabric is shortened from 6 h to 0.5 h, which has important application value.

[0091] The roll impregnation method for 2.5D fabric is specifically the roll impregnation of 2.5D high-silica fiber fabric. When preparing the 2.5D high-silica fabric / phenolic prepreg, the specific steps are as follows:

[0092] (1) Place the 2.5D high-silica fiber fabric on the initial platform. The fabric length × width is 2.5 m × 0.7 m, and the thickness is 5 mm. The plastic mesh covers the inside of the impregnation tank. The size of the plastic mesh is 0.5 mm, and the thickness of the plastic mesh is 2 mm;

[0093] (2) Load barium phenolic resin into the glue storage device, that is, the impregnating glue is barium phenolic resin;

[0094] (3) Inject 30 kg of barium phenolic resin into the impregnation tank through a flow pump. Calculate the weight of the barium phenolic resin used according to the fabric thickness. The depth of the barium phenolic resin is 5 mm higher than the fabric;

[0095] (4) Turn on the heating plate of the impregnation tank to preheat the barium phenolic resin in the impregnation tank. The preheating temperature is 30 °C;

[0096] (5) Transfer the 2.5D fabric to above the impregnation tank through the conveying device;

[0097] (6) Press down the 2.5D fabric through the fixed pressure roller so that the lower surface of the 2.5D fabric adheres to the inside of the impregnation tank;

[0098] (7) Roll the 2.5D fabric back and forth 4 times through the moving pressure roller. The rolling pressure is 10 N;

[0099] (8) Lift the roll-impregnated 2.5D fabric and transfer it to the initial platform. During the transfer process, adjust the gap between the two limit pressure rollers to 4.8 mm through the two limit pressure rollers.

[0100] (9) Remove the impregnated 2.5D fabric prepreg on the initial platform and put it into the oven for heat treatment. The heat treatment temperature is 100 °C, and the heat treatment time is 28 min.

[0101] Cut the fabric prepreg for composite material molding.

[0102] Table 1. Properties of prepreg and composite material

[0103]

[0104] The roll impregnation method for 2.5D fabric is specifically the roll impregnation of 2.5D quartz fiber fabric. When preparing the 2.5D quartz fabric / phenolic prepreg, the specific steps are as follows:

[0105] (1) Place the 2.5D quartz fiber fabric on the initial platform. The length × width of the fabric is 3.5 m × 0.6 m, and the thickness is 8 mm. The plastic mesh covers the inside of the impregnation tank. The mesh size is 1.5 mm, and the mesh thickness is 3 mm;

[0106] (2) Load barium phenolic resin into the resin storage device;

[0107] (3) Inject 50 kg of barium phenolic resin into the impregnation tank through a flow pump. Calculate the weight of the barium phenolic resin used according to the fabric thickness. The depth of the barium phenolic resin is 10 mm higher than the fabric:

[0108] (4) Turn on the heating plate of the impregnation tank to preheat the barium phenolic resin in the impregnation tank. The preheating temperature is 40 °C;

[0109] (5) Transfer the 2.5D fabric to above the impregnation tank through the conveying device;

[0110] (6) Press down the 2.5D fabric through the fixed pressure roller so that the lower surface of the 2.5D fabric adheres to the inside of the impregnation tank;

[0111] (7) Roll the fabric back and forth 6 times through the moving pressure roller. The rolling pressure is 30 N;

[0112] (8) Lift the rolled 2.5D fabric and transfer it to the initial platform. During the transfer process, adjust the gap between the two limit pressure rollers to 7.6 mm through the two limit pressure rollers.

[0113] (9) Remove the impregnated 2.5D fabric prepreg on the initial platform and put it into the oven for heat treatment. The heat treatment temperature is 100 °C, and the heat treatment time is 50 min.

[0114] (10) Cut the fabric prepreg for composite material molding.

[0115] Table 2. Properties of Prepreg and Composite Material

[0116]

[0117] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0118] In this application and its embodiments, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0119] In this application and its embodiments, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0120] The above disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described above. Of course, they are only examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0121] Although the preferred embodiments of this application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0122] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. A roll pressing and impregnating device for fabrics, characterized in that, Comprising: Frame; Impregnation tank, arranged inside the frame; wherein, the impregnation tank is used to hold impregnating glue; Fixed pressure roller, arranged at intervals above the inner bottom of the impregnation tank, and the interval between the fixed pressure roller and the inner bottom of the impregnation tank is used to press the 2.5D fabric into the impregnating glue in the impregnation tank; Moving pressure roller, arranged above the inner bottom of the impregnation tank, and the moving pressure roller can move up and down to press on the 2.5D fabric and can reciprocally roll to reciprocally roll-press the 2.5D fabric; There are two fixed pressure rollers; The two fixed pressure rollers are arranged at intervals at both ends of the impregnation tank along the length direction of the impregnation tank, and the moving pressure roller is arranged between the two fixed pressure rollers and can reciprocally move between the two fixed pressure rollers; The roll-pressing impregnation equipment further comprises: Two limit pressure rollers arranged at intervals up and down, and the gap between the two limit pressure rollers can be adjusted; Wherein, the two limit pressure rollers are used to extrude the impregnated 2.5D fabric passing through between them to remove the floating glue, and the adjustment range of the gap between the two limit pressure rollers is greater than or equal to 2 mm and less than or equal to 20 mm; The roll-pressing impregnation equipment further comprises: Plastic grid, laid on the inner bottom of the impregnation tank, so as to form a gap between the lower surface of the 2.5D fabric and the inner bottom of the impregnation tank, so that the impregnating glue in the impregnation tank can impregnate the lower surface of the 2.5D fabric; Wherein, the plastic grid covers the inner bottom of the impregnation tank, and the side length of a single grid of the plastic grid ranges from 0.5 mm to 5 mm, and the thickness of the plastic grid ranges from 0.5 mm to 2 mm; The roll-pressing impregnation equipment further comprises: Heating plate, arranged in the impregnation tank to preheat the impregnating glue in the impregnation tank, and the preheating temperature ranges from 25°C to 80°C; The roll-pressing impregnation equipment further comprises: Scraper, movably arranged on the inner bottom of the impregnation tank; Sliding rail and slider in sliding fit, the sliding rail is arranged along the length direction of the impregnation tank, and the slider is fixed to the scraper, so that the scraper can reciprocally move along the length direction of the impregnation tank to scrape the impregnating glue on the inner bottom of the impregnation tank after impregnation; The roll-pressing impregnation equipment further comprises: Pitch rotating shaft, fixed to the outer bottom of the impregnation tank; Pitch cylinder, the pitch rotating shaft and the pitch cylinder are arranged at intervals along the length direction of the impregnation tank on the outer bottom of the impregnation tank, so that the impregnation tank can tilt and reset.

2. The roll press impregnation equipment according to claim 1, wherein Further comprising: Initial platform, arranged inside the frame and above the impregnation tank; wherein, the initial platform is used to place the 2.5D fabric; Clamping mechanism and conveying device, the clamping mechanism is used to connect the two ends of the 2.5D fabric with the conveying device, and the conveying device is used to convey the 2.5D fabric into the impregnation tank and is used to convey the impregnated 2.5D fabric.

3. The roll pressing and impregnating device according to claim 2, characterized in that, Further comprising a glue storage device, an injection device and a collection device; Wherein, the glue storage device is used to store the impregnating glue, the injection device is used to inject the impregnating glue in the glue storage device into the impregnation tank, and the collection device is used to hold the impregnating glue scraped off by the scraper.

4. A roll pressing and impregnating method for 2.5D fabric, characterized in that, It includes the following steps: Inject the impregnating glue into the impregnating tank and preheat the impregnating glue; The 2.5D fabric enters the inner bottom of the impregnating tank from under the fixed pressing roller; The moving pressing roller moves downward and presses on the 2.5D fabric in the impregnating tank; The moving pressing roller reciprocates to roll and press the 2.5D fabric reciprocally; The impregnated 2.5D fabric moves through between two limiting pressing rollers and is pressed by the two limiting pressing rollers to remove the floating glue; In the step of the moving pressing roller reciprocating to roll and press the 2.5D fabric reciprocally, the number of rolling presses of the moving pressing roller ranges from greater than or equal to 4 times to less than or equal to 6 times, and the rolling pressure of the moving pressing roller ranges from greater than or equal to 10 N to less than or equal to 30 N; Injecting the impregnating glue into the impregnating tank specifically includes the following steps: Inject the impregnating glue of greater than or equal to 20 kg and less than or equal to 50 kg into the impregnating tank through a flow pump, calculate the weight of the impregnating glue used according to the thickness of the 2.5D fabric, and the value range of the depth of the impregnating glue above the distance of the 2.5D fabric is greater than or equal to 5 mm and less than or equal to 10 mm; Before the step that the impregnated 2.5D fabric moves through between two limiting pressing rollers and is pressed by the two limiting pressing rollers to remove the floating glue, it further includes: Lift the 2.5D fabric prepreg after rolling and pressing, transfer it to the initial platform, and adjust the gap between the two limiting pressing rollers through the two limiting pressing rollers during the transfer process; After the step that the impregnated 2.5D fabric moves through between two limiting pressing rollers and is pressed by the two limiting pressing rollers to remove the floating glue, it further includes: Take down the 2.5D fabric prepreg impregnated on the initial platform and put it into an oven for heat treatment; Cut the 2.5D fabric prepreg to complete the rolling and impregnation of the 2.5D fabric prepreg; The value range of the heat treatment temperature is greater than or equal to 80 °C and less than or equal to 120 °C, and the value range of the time is greater than or equal to 20 min and less than or equal to 50 minutes.

Images