Production equipment and method for continuous fiber reinforced thermoplastic composite material plate

Abstract

The present invention provides a production device and method for continuous fiber reinforced thermoplastic composite material plates, wherein the production device for continuous fiber reinforced thermoplastic composite material plates includes: a conveying device, an unwinding device, a heating and pressurizing device, a cooling and pressurizing device, a heating and pressurizing thickness setting device, a cooling and pressurizing thickness setting device and a cutting device; the unwinding device and the cutting device are respectively arranged at both ends of the conveying device; in the direction from the unwinding device to the cutting device, the heating and pressurizing device, the cooling and pressurizing device, the heating and pressurizing thickness setting device and the cooling and pressurizing thickness setting device are sequentially arranged inside the conveying device. The production equipment of the present invention reduces the difficulty of demolding and transferring the impregnated material by integrating the impregnation and puffing of the material into one production line, and simplifies the production process of the continuous fiber reinforced thermoplastic composite material plates, saves production resources, reduces energy consumption, and makes the produced plates have excellent mechanical properties and broad application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material forming, and in particular to a production device and method for a continuous fiber reinforced thermoplastic composite material plate. Background Art

[0002] At present, continuous fiber reinforced thermoplastic composite sheets have excellent tensile strength and impact strength due to the use of continuous fibers as reinforcement materials. Moreover, after some special design of the continuous fiber structure of the composite sheet, it can be expanded. The composite sheet obtained after expansion has the functions of sound absorption, heat insulation, shock absorption and energy absorption, and has a very broad application prospect.

[0003] In order to ensure that the continuous fiber reinforced thermoplastic composite sheet produced has good performance, impregnation and puffing are essential process steps in the production process of continuous fiber reinforced thermoplastic composite sheet. However, the current method is to use two production lines to separate impregnation and puffing. That is, the material after impregnation on the impregnation line needs to be transferred to the puffing line for puffing. On the one hand, this increases the difficulty of demolding and transferring the impregnated material and makes the production process complicated. On the other hand, it increases the cost of production equipment and production energy consumption. Summary of the Invention

[0004] The problem solved by the present invention is how to simplify the production process of continuous fiber reinforced thermoplastic composite material plates and reduce the difficulty of demoulding and transferring the impregnated materials.

[0005] To solve the above problems, the present invention provides a production equipment for continuous fiber reinforced thermoplastic composite material plates, comprising: a conveying device, an unwinding device, a heating and pressurizing device, a cooling and pressurizing device, a heating and pressurizing thickness setting device, a cooling and pressurizing thickness setting device and a cutting device; the unwinding device and the cutting device are respectively arranged at both ends of the conveying device; in the direction from the unwinding device to the cutting device, the heating and pressurizing device, the cooling and pressurizing device, the heating and pressurizing thickness setting device and the cooling and pressurizing thickness setting device are sequentially arranged inside the conveying device.

[0006] Therefore, after starting the production equipment of continuous fiber reinforced thermoplastic composite material plates, various materials are unwound by the unwinding device and stacked on the conveying device, and the various materials are conveyed from the unwinding device to the cutting device under the traction of the conveying device. The materials are first fully impregnated by the pressurized heating treatment of the heating and pressurizing device, and then solidified by the cooling and pressurizing treatment of the cooling and pressurizing device, and then expanded by the heating and pressurizing thickness setting device, and then shaped by the cooling and pressurizing thickness setting device, and finally cut and collected; among them, the impregnation process can make the material have higher toughness, and the expansion process increases the thickness of the material and reduces the density. The solidification of the material between the impregnation process and the expansion process reduces the difficulty of demolding the material after impregnation, so as to facilitate the demolding of the material; further, the expansion process conditions can be changed to obtain continuous fiber reinforced thermoplastic composite material sheets with different densities; in this way, the production equipment of continuous fiber reinforced thermoplastic composite material sheets can realize the production of high-impact continuous fiber reinforced thermoplastic composite material sheets with adjustable density on a single production line. Compared with setting up multiple production lines for production, this eliminates the step of transferring the impregnated material on the impregnation production line over a long distance to the expansion production line, reduces the difficulty of demolding and transferring the impregnated material, and simplifies the production process.

[0007] Optionally, the conveying device includes a first conveying mechanism and a second conveying mechanism, and in the direction from the unwinding device to the cutting device, the first conveying mechanism is arranged adjacent to the second conveying mechanism; the heating and pressurizing device and the cooling and pressurizing device are both arranged inside the first conveying mechanism, and the heating and pressurizing thickness fixing device and the cooling and pressurizing thickness fixing device are both arranged inside the second conveying mechanism.

[0008] Optionally, the first conveying mechanism includes a first supporting belt and a first synchronous belt arranged opposite to each other, and the second conveying mechanism includes a second supporting belt and a second synchronous belt arranged opposite to each other; the first synchronous belt is located above the first supporting belt, and the second synchronous belt is located above the second supporting belt, and the size of the first supporting belt in the direction from the unwinding device to the cutting device is larger than the size of the first synchronous belt in the direction from the unwinding device to the cutting device.

[0009] Optionally, the first supporting belt, the first synchronous belt, the second supporting belt and the second synchronous belt are all ring-shaped; the heating and pressurizing device and the cooling and pressurizing device are both provided in the area enclosed by the first supporting belt and the area enclosed by the first synchronous belt; the heating and pressurizing and thickness-fixing device and the cooling and pressurizing and thickness-fixing device are both provided in the area enclosed by the second supporting belt and the area enclosed by the second synchronous belt.

[0010] Optionally, the pressure applied to the material by the cooling and pressurizing device is greater than the pressure applied to the material by the heating and pressurizing device, and the pressure applied to the material by the cooling and pressurizing device is greater than the pressure applied to the material by the heating and pressurizing device.

[0011] Optionally, the heating and pressurizing thickness setting device includes a first pressing mechanism and a first spacing adjustment mechanism, and the first spacing adjustment mechanism is suitable for adjusting the pressing spacing of the first pressing mechanism; the cooling and pressurizing thickness setting device includes a second pressing mechanism and a second spacing adjustment mechanism, and the second spacing adjustment mechanism is suitable for adjusting the pressing spacing of the second pressing mechanism; when the first pressing mechanism and the second pressing mechanism are both pressed into place, the pressing spacing of the first pressing mechanism is greater than the pressing spacing of the second pressing mechanism.

[0012] Optionally, the heating, pressurizing and thickness-fixing device further includes an air blowing mechanism, and mesh holes are provided on the second supporting belt and the second synchronous belt, and the hot air blown out by the air blowing mechanism contacts the material through the mesh holes.

[0013] Optionally, a first material channel is formed by a side of the first supporting belt facing the first synchronous belt and a side of the first synchronous belt facing the first supporting belt, and a second material channel is formed by a side of the second supporting belt facing the second synchronous belt and a side of the second synchronous belt facing the second supporting belt; the first material channel is connected to the second material channel; and in the direction from the unwinding device to the cutting device, the dimensions of the first material channel and the second material channel in the vertical direction gradually decrease.

[0014] To solve the above problems, the present invention further provides a method for producing a continuous fiber reinforced thermoplastic composite material plate, using the above-mentioned production equipment for the continuous fiber reinforced thermoplastic composite material plate, comprising:

[0015] The material is wound on the unwinding device and unwound by the unwinding device, so that the material is stacked on the conveying device and is conveyed from the unwinding device to the cutting device along with the conveying device;

[0016] The laminated materials are sequentially impregnated under a pressurized heating process in a heating and pressurizing device, and solidified under a cooling and pressurizing process in a cooling and pressurizing device;

[0017] The solidified material is expanded in a heating and pressurizing thickness setting device and then shaped in a cooling and pressurizing thickness setting device.

[0018] The shaped material enters the cutting device, and the cutting device cuts and collects the shaped material.

[0019] The production method of the continuous fiber reinforced thermoplastic composite material plate and the production equipment of the continuous fiber reinforced thermoplastic composite material plate have the same advantages over the prior art, and will not be described in detail here.

[0020] Optionally, the material includes a surface reinforcement material, a core reinforcement material, and a resin material; the surface reinforcement material is a woven continuous fiber cloth, and the core reinforcement material is a continuous fiber felt with randomly arranged fiber directions and subjected to needle punching or hydroentanglement; and the order in which the materials are stacked on the conveying device is from top to bottom: the resin material, the surface reinforcement material, the resin material, the core reinforcement material, the resin material, the surface reinforcement material, and the resin material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the production equipment of the continuous fiber reinforced thermoplastic composite material plate in an embodiment of the present invention;

[0022] Figure 2 The flowchart of the production method of the continuous fiber reinforced thermoplastic composite material plate in an embodiment of the present invention is shown.

[0023] Description of reference numerals:

[0024] 1-unwinding device; 11-unwinding machine; 2-transmitting device; 21-first conveying mechanism; 211-first supporting belt; 212-first synchronous belt; 22-second conveying mechanism; 221-second supporting belt; 222-second synchronous belt; 3-heating and pressurizing device; 4-cooling and pressurizing device; 5-heating and pressurizing thickness-setting device; 6-cooling and pressurizing thickness-setting device; 7-cutting device; 8-first material channel; 9-second material channel. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "high", "low", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and a coordinate system XZ is set herein, wherein the positive direction of the X-axis represents the right direction, the reverse direction of the X-axis represents the left direction, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom; this is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0027] Combine Figure 1As shown, an embodiment of the present invention provides a production equipment for continuous fiber reinforced thermoplastic composite material plates, including: a conveying device 2, an unwinding device 1, a heating and pressurizing device 3, a cooling and pressurizing device 4, a heating and pressurizing thickness setting device 5, a cooling and pressurizing thickness setting device 6 and a cutting device 7; the unwinding device 1 and the cutting device 7 are respectively arranged at both ends of the conveying device 2; in the direction from the unwinding device 1 to the cutting device 7, the heating and pressurizing device 3, the cooling and pressurizing device 4, the heating and pressurizing thickness setting device 5 and the cooling and pressurizing thickness setting device 6 are sequentially arranged inside the conveying device 2.

[0028] In the production equipment of continuous fiber reinforced thermoplastic composite material plates, the unwinding device 1 is used to unwind materials, and a variety of materials are wound on it; after the equipment is started, the various materials are unwound by the unwinding device 1 and stacked on the conveying device 2, and the various materials are pulled by the conveying device 2 from the unwinding device 1 to the cutting device 7 (i.e. Figure 1The material is firstly subjected to the pressurized heating treatment of the heating and pressurizing device 3 to be fully impregnated, then solidified by the cooling and pressurizing treatment of the cooling and pressurizing device 4, then expanded by the heating and pressurizing and thickness stabilizing device 5, then shaped by the cooling and pressurizing and thickness stabilizing device 6, and finally cut and Material collection; wherein, the impregnation process can make the material have higher toughness, so as to improve the tensile strength and impact resistance of the continuous fiber reinforced thermoplastic composite material sheet, and the expansion process increases the thickness of the material and reduces the density, so that the continuous fiber reinforced thermoplastic composite material sheet has a smaller density, so as to improve the thermal insulation, shock absorption, impact resistance, energy absorption and other properties of the continuous fiber reinforced thermoplastic composite material sheet; the solidification of the material between the impregnation process and the expansion process is a transition process from impregnation to expansion of the material. Through the cooling and pressurizing treatment of the cooling and pressurizing device 4, the molten material after impregnation is solidified due to the temperature reduction. , thereby reducing the difficulty of demoulding the impregnated material, making it easier to demould the material; the solidified material can directly enter the expansion process after demoulding, and the expansion process of the solidified material is relatively easy to control compared to the material in a molten state; specifically, compared to the material directly entering the expansion process after impregnation, since the impregnated material is in a molten state, it is not conducive to the expansion control of the material during the expansion process, so the cooling and pressurizing device 4 is very necessary for the solidification of the material; further, according to design requirements, by changing the expansion process conditions (such as heating temperature) to obtain continuous fiber reinforced thermoplastic composite material plates with different densities; in this way, the continuous fiber reinforced The production equipment of thermoplastic composite sheets can realize the production of high-impact, density-adjustable continuous fiber-reinforced thermoplastic composite sheets on a single production line. On this production line, the material is cooled and solidified after the impregnation process, and then enters the expansion process. Compared with setting up multiple production lines for production, this not only eliminates the operation step of transferring the impregnated material on the impregnation line from the impregnation line to the expansion line, simplifying the production process, but also reduces the difficulty of demolding and transferring the impregnated material. At the same time, it also greatly saves production resources and reduces energy consumption, thereby producing lower-cost sheets.

[0029] Optionally, combined Figure 1As shown, the conveying device 2 includes a first conveying mechanism 21 and a second conveying mechanism 22. In the direction from the unwinding device 1 to the cutting device 7, the first conveying mechanism 21 and the second conveying mechanism 22 are arranged adjacent to each other; the heating and pressurizing device 3 and the cooling and pressurizing device 4 are both arranged inside the first conveying mechanism 21, and the heating and pressurizing thickness fixing device 5 and the cooling and pressurizing thickness fixing device 6 are both arranged inside the second conveying mechanism 22.

[0030] In this embodiment, the conveying device 2 is composed of two sets of conveying mechanisms, which are a first conveying mechanism 21 and a second conveying mechanism 22 arranged adjacent to each other, and the end of the first conveying mechanism 21 away from the second conveying mechanism 22 is close to the unwinding device 1, and the end of the second conveying mechanism 22 away from the first conveying mechanism 21 is close to the cutting device 7; in the direction from the unwinding device 1 to the cutting device 7 (i.e. Figure 1 In the figure (from left to right, also in the positive direction of the X axis), the heating and pressurizing device 3 and the cooling and pressurizing device 4 are sequentially arranged inside the first conveying mechanism 21, and the heating and pressurizing thickness calibrating device 5 and the cooling and pressurizing thickness calibrating device 6 are sequentially arranged inside the second conveying mechanism 22; specifically, Figure 1 From left to right in the figure, the heating and pressurizing device 3, the cooling and pressurizing device 4, the heating and pressurizing and thickness setting device 5 and the cooling and pressurizing and thickness setting device 6 are arranged in sequence, and the heating and pressurizing device 3 is adjacent to the cooling and pressurizing device 4, and the heating and pressurizing and thickness setting device 5 is adjacent to the cooling and pressurizing and thickness setting device 6; under the traction of the first conveying mechanism 21, the material passes through the heating and pressurizing device 3 and the cooling and pressurizing device 4 in sequence, and then under the traction of the second conveying mechanism 22, passes through the heating and pressurizing and thickness setting device 5 and the cooling and pressurizing and thickness setting device 6 in sequence, and finally passes through the cutting device 7.

[0031] By splitting the conveying device 2 into two sets of conveying mechanisms, the overall production difficulty, assembly difficulty and transportation difficulty of the conveying device 2 are reduced, and it is convenient for maintenance personnel to maintain and repair the conveying device 2; and the setting of the first conveying mechanism 21 and the second conveying mechanism 22 improves the applicability of the conveying device 2, so that the first conveying mechanism 21 and the second conveying mechanism 22 can also be used for other industrial production respectively.

[0032] Optionally, combined Figure 1 As shown, the first conveying mechanism 21 includes a first supporting belt 211 and a first synchronous belt 212 arranged opposite to each other, and the second conveying mechanism 22 includes a second supporting belt 221 and a second synchronous belt 222 arranged opposite to each other; the first synchronous belt 212 is located above the first supporting belt 211 (i.e. Figure 1 The second synchronous belt 222 is located above the second supporting belt 221, and the dimension L1 of the first supporting belt 211 in the direction from the unwinding device 1 to the cutting device 7 is greater than the dimension L2 of the first synchronous belt 212 in the direction from the unwinding device 1 to the cutting device 7.

[0033] In the direction from the unwinding device 1 to the cutting device 7 (i.e. Figure 1 In the direction from left to right in the middle (also in the positive direction of the X-axis), the distance L1 between the two ends of the first supporting belt 211 (that is, the dimension of the first supporting belt 211 in the direction from the unwinding device 1 to the cutting device 7) is greater than the distance L2 between the two ends of the first synchronous belt 212 (the dimension of the first synchronous belt 212 in the direction from the unwinding device 1 to the cutting device 7); this is arranged so that after the unwinding device 1 unloads the material, the material falls on the first supporting belt 211, and the material enters between the first supporting belt 211 and the first synchronous belt 212 under the traction of the first supporting belt 211. The side of the first supporting belt 211 toward the first synchronous belt 212 and the side of the first synchronous belt 212 toward the first supporting belt 211 form a first material channel 8, and the side of the second supporting belt 221 toward the second synchronous belt 222 and the side of the second synchronous belt 222 toward the second supporting belt 221 form a second material channel 9; in the first material channel 8 and the second material channel 9, the material fits with the support belt and the synchronous belt to facilitate the various devices arranged in the conveying device 2 to pressurize, heat or cool the material.

[0034] Furthermore, the first supporting belt 211, the first synchronous belt 212, the second supporting belt 221 and the second synchronous belt 222 can be made of steel belts or Teflon belts or other conveyor belts with release and supporting functions, so as to facilitate the long-term use of the conveying device 2 and the detachment of materials from the conveying device 2.

[0035] Optionally, combined Figure 1 As shown, the first supporting belt 211, the first synchronous belt 212, the second supporting belt 221 and the second synchronous belt 222 are all ring-shaped; the area enclosed by the first supporting belt 211 and the area enclosed by the first synchronous belt 212 are both provided with a heating and pressurizing device 3 and a cooling and pressurizing device 4; the area enclosed by the second supporting belt 221 and the area enclosed by the second synchronous belt 222 are both provided with a heating and pressurizing thickness-fixing device 5 and a cooling and pressurizing thickness-fixing device 6.

[0036] The heating and pressurizing device 3, the cooling and pressurizing device 4, the heating and pressurizing thickness setting device 5 and the cooling and pressurizing thickness setting device 6 are all arranged in pairs in the upper and lower parts of the conveying device 2. Specifically, the heating and pressurizing device 3 and the cooling and pressurizing device 4 are arranged in the area surrounded by the first supporting belt 211, and the heating and pressurizing device 3 and the cooling and pressurizing device 4 are also arranged in the area surrounded by the first synchronous belt 212. The heating and pressurizing device 3 and the cooling and pressurizing device 4 arranged in the area surrounded by the first supporting belt 211 are respectively arranged in upper and lower directions relative to the heating and pressurizing device 3 and the cooling and pressurizing device 4 arranged in the area surrounded by the first synchronous belt 212; in the area surrounded by the second supporting belt 221 A heating and pressurizing thickness setting device 5 and a cooling and pressurizing thickness setting device 6 are provided. The area surrounded by the second synchronous belt 222 is also provided with a heating and pressurizing thickness setting device 5 and a cooling and pressurizing thickness setting device 6. The heating and pressurizing thickness setting device 5 and the cooling and pressurizing thickness setting device 6 arranged in the area surrounded by the second supporting belt 221 are respectively arranged relative to the heating and pressurizing thickness setting device 5 and the cooling and pressurizing thickness setting device 6 arranged in the area surrounded by the second synchronous belt 222. Such an arrangement ensures that the heating and pressurizing device 3 and the heating and pressurizing thickness setting device 5 fully heat and pressurize the material, and ensures that the cooling and pressurizing device 4 and the cooling and pressurizing thickness setting device 6 fully cool and pressurize the material.

[0037] Furthermore, the first conveying mechanism 21 and the second conveying mechanism 22 also include multiple traction rollers for pulling the support belt or the synchronous belt to move, and the axes of the multiple traction rollers are parallel to each other; in the first conveying mechanism 21, the first support belt 211 and the first synchronous belt 212 are both arranged around the traction rollers, the heating and pressurizing device 3 and the cooling and pressurizing device 4; in the second conveying mechanism 22, the second support belt 221 and the second synchronous belt 222 are both arranged around the traction rollers, the heating and pressurizing thickness setting device 5 and the cooling and pressurizing thickness setting device 6.

[0038] Optionally, the pressure applied to the material by the cooling and pressurizing device 4 is greater than the pressure applied to the material by the heating and pressurizing device 3 , and the pressure applied to the material by the cooling and pressurizing thickness setting device 6 is greater than the pressure applied to the material by the heating and pressurizing thickness setting device 5 .

[0039] Typically, when producing continuous fiber reinforced thermoplastic composite material sheets, the pressure applied to the material by the heating and pressurizing device 3 is in the range of 1-20 MPa, the pressure applied to the material by the cooling and pressurizing device 4 is in the range of 0.02-20 MPa, the pressure applied to the material by the heating and pressurizing device 5 is in the range of 0.02-3 MPa, and the pressure applied to the material by the cooling and pressurizing device 6 is in the range of 0.02-20 MPa. On this basis, the pressure applied to the material by the cooling and pressurizing device 4 is greater than the pressure applied to the material by the heating and pressurizing device 3, so that the material is cooled under a higher pressure when passing through the cooling and pressurizing device 4, thereby reducing the temperature of the material and solidifying the molten material after the heating and pressurizing treatment by the heating and pressurizing device 3, thereby facilitating the demolding and transfer of the material. The pressure applied to the material by the cooling and pressurizing device 6 is greater than the pressure applied to the material by the heating and pressurizing device 5, so as to facilitate the thickness determination of the material.

[0040] Optionally, in the direction from the unwinding device 1 to the cutting device 7 , the pressure applied to the material by the heating and pressurizing device 3 gradually increases.

[0041] When the material first enters the heating and pressurizing zone (i.e., the area between a pair of heating and pressurizing devices 3), the pressure exerted by the heating and pressurizing devices 3 on the material is relatively small. As the material gradually penetrates into the heating and pressurizing zone, the pressure exerted on the material gradually increases. Specifically, in the direction from the unwinding device 1 to the cutting device 7, the pressure exerted on the material by the heating and pressurizing devices 3 gradually increases to facilitate the initial shaping of the material. Furthermore, the heating temperature of the heating and pressurizing zone (i.e., the temperature provided to the material by the heating and pressurizing) ranges from room temperature to 400°C, for example, 270°C. When the heating temperature of the heating and pressurizing zone is higher than 400°C, since 400°C and below already meet production conditions, this can easily lead to a waste of resources. When the heating temperature of the heating and pressurizing zone is lower than room temperature, it is obviously impossible to melt the resin in the material, which does not meet production needs.

[0042] Optionally, the heating and pressurizing thickness setting device 5 includes a first pressing mechanism and a first spacing adjustment mechanism, and the first spacing adjustment mechanism is suitable for adjusting the pressing spacing of the first pressing mechanism; the cooling and pressurizing thickness setting device 6 includes a second pressing mechanism and a second spacing adjustment mechanism, and the second spacing adjustment mechanism is suitable for adjusting the pressing spacing of the second pressing mechanism; when the first pressing mechanism and the second pressing mechanism are both pressed into place, the pressing spacing of the first pressing mechanism is greater than the pressing spacing of the second pressing mechanism.

[0043] When producing continuous fiber reinforced thermoplastic composite material sheets, the first pressing mechanism is used to provide pressure to the material, and the first spacing adjustment mechanism is suitable for adjusting the pressing spacing of the first pressing mechanism. Specifically, since the heating and pressurizing thickness setting device 5 is arranged in pairs up and down, the first pressing mechanism is also arranged in pairs up and down. The two first pressing mechanisms arranged up and down act on the second synchronous belt 222 and the second support belt 221 respectively to apply pressure to the material; the pressing spacing of the first pressing mechanism is the distance between the two first pressing mechanisms arranged up and down, and its value range is 0.5mm-200mm. The pressing spacing of the first pressing mechanism is adjusted by the first spacing adjustment mechanism to adjust the pressure applied to the material by the first pressing mechanism and to set the thickness of the material (that is, the thickness of the material is fixed to a constant value). Similar to the first pressing mechanism and the first spacing adjustment mechanism, the second spacing adjustment mechanism is suitable for adjusting the pressing spacing of the second pressing mechanism, and the second pressing mechanism is also arranged in pairs up and down, and the two second pressing mechanisms arranged up and down respectively act on the second synchronous belt 222 and the second support belt 221 to apply pressure to the material; the pressing spacing of the second pressing mechanism is the distance between the two second pressing mechanisms arranged up and down, and its value range is also 0.5mm-200mm. The pressing spacing of the second pressing mechanism is adjusted by the second spacing adjustment mechanism to adjust the pressure applied to the material by the second pressing mechanism and to determine the thickness of the material.

[0044] When using a production device for continuous fiber reinforced thermoplastic composite material sheets for production, when the first pressing mechanism and the second pressing mechanism are both pressed into place, the pressing spacing of the first pressing mechanism is greater than the pressing spacing of the second pressing mechanism; wherein, the first pressing mechanism (the second pressing mechanism) is pressed into place means that the first pressing mechanism (the second pressing mechanism) is adjusted to a fixed value that meets the production needs under the action of the first spacing adjustment mechanism (the second spacing adjustment mechanism), so that the thickness of the material reaches the set thickness value under the pressing action of the first pressing mechanism (the second pressing mechanism); in this way, by setting the pressing spacing of the first pressing mechanism to be greater than the pressing spacing of the second pressing mechanism when the first pressing mechanism and the second pressing mechanism are both pressed into place, the pressure applied to the material by the cooling and pressurizing thickness setting device 6 is greater than the pressure applied to the material by the heating and pressurizing thickness setting device 5, and the material is further pressed, so that the cooling and pressurizing thickness setting device 6 can set the thickness and shape of the material, so that the material eventually becomes a continuous fiber reinforced thermoplastic composite material sheet with a tight interior.

[0045] Optionally, the heating, pressurizing and thickness-fixing device 5 further includes an air blowing mechanism, and mesh holes are provided on the second supporting belt 221 and the second synchronous belt 222 , and the hot air blown out by the air blowing mechanism passes through the mesh holes and contacts the material.

[0046] The second supporting belt 221 and the second synchronous belt 222 are provided with mesh holes to facilitate the hot air blown out by the blowing mechanism to contact the material through the mesh holes; the heating and pressurizing thickness setting area (i.e., the area between a pair of heating and pressurizing thickness setting devices 5) is designed as a semi-enclosed drying tunnel. In the heating and pressurizing thickness setting area, the hot air convects up and down and left and right in the drying tunnel, causing the material to begin to expand after heating and increase its thickness, thereby improving the sound absorption, heat insulation, shock absorption and energy absorption capabilities of the continuous fiber reinforced thermoplastic composite material plate.

[0047] Furthermore, the cooling and pressurizing thickness setting area (i.e., the area between the pair of cooling and pressurizing thickness setting devices 6) can also be designed as a semi-enclosed drying tunnel. The cooling and pressurizing thickness setting area can be connected to the outside through the drying tunnel, and the outside atmosphere can be used to cool the material, thereby saving resources. Furthermore, the cooling and pressurizing thickness setting device 6 can also include a blowing mechanism. By providing the blowing mechanism, the contact between the outside air and the material is accelerated, thereby increasing the cooling speed of the material.

[0048] Optionally, combined Figure 1 As shown, the first supporting belt 211 faces the first synchronous belt 212 on one side and the first synchronous belt 212 faces the first supporting belt 211 on one side to form a first material channel 8, and the second supporting belt 221 faces the second synchronous belt 222 on one side and the second synchronous belt 222 faces the second supporting belt 221 on one side to form a second material channel 9; the first material channel 8 is connected to the second material channel 9; and in the direction from the unwinding device 1 to the cutting device 7, the first material channel 8 and the second material channel 9 are in the vertical direction (i.e. Figure 1 The dimensions in the upper and lower directions (also the Z-axis direction) gradually decrease.

[0049] For the production equipment of continuous fiber reinforced thermoplastic composite material plates, the first material channel 8 is the area between the side of the first supporting belt 211 facing the first synchronous belt 212 and the side of the first synchronous belt 212 facing the first supporting belt 211, and the second material channel 9 is the area between the side of the second supporting belt 221 facing the second synchronous belt 222 and the side of the second synchronous belt 222 facing the second supporting belt 221; the first material channel 8 and the second material channel 9 are both used for the passage of materials. Specifically, under the traction of the conveyor 2, the materials are conveyed from left to right (i.e., along the conveyor belt 2). Figure 1 The positive direction of the X axis) passes through the first material channel 8 and the second material channel 9 in sequence. In the direction from the unwinding device 1 to the cutting device 7 (i.e. from left to right, also Figure 1In the positive direction of the X-axis), the dimensions of the first material channel 8 and the second material channel 9 in the vertical direction are gradually reduced, that is, the dimension of the first material channel 8 in the vertical direction at one end close to the unwinding device 1 is larger than the dimension of the second material channel 9 in the vertical direction at one end close to the unwinding device 1 is larger than the dimension of the second material channel 9 in the vertical direction at one end close to the cutting device 7, wherein the dimension of the first material channel 8 in the vertical direction is the dimension of the first supporting belt 211 toward the first synchronous belt 212 and the first synchronous belt 213. The distance between the side of the step belt 212 facing the first support belt 211, the size of the second material channel 9 in the vertical direction is the distance between the side of the second support belt 221 facing the second synchronous belt 222 and the side of the second synchronous belt 222 facing the second support belt 221; in this way, the first material channel 8 and the second material channel 9 are both wedge-shaped, the end of the first material channel 8 close to the unwinding device 1 is the large end of the wedge, and the end of the first material channel 8 close to the cutting device 7 is the small end of the wedge. In the direction from the large end of the wedge to the small end (i.e. Figure 1 In the positive direction of the center X-axis), the distance between the upper and lower opposite sides of the wedge gradually decreases. Since the wedge-shaped second material channel 9 is similar to the wedge-shaped first material channel 8, they are not repeated here. The wedge-shaped first material channel 8 corresponds to the situation where the pressure on the material on the first material channel 8 gradually increases, and the wedge-shaped second material channel 9 corresponds to the situation where the pressure on the material on the second material channel 9 gradually increases. Specifically, in the direction from the large end to the small end of the wedge, the pressure on the material in the first material channel 8 and the second material channel 9 gradually increases, so as to facilitate the production and molding of continuous fiber reinforced thermoplastic composite materials.

[0050] Optionally, in the production equipment of continuous fiber reinforced thermoplastic composite material plates, the heating and pressurizing device 3, the cooling and pressurizing device 4, the heating and pressurizing and thickness setting device 5, and the cooling and pressurizing and thickness setting device 6 can pressurize the material in a multi-roller pressurization, a rigid plate pressurization, or an air pressure pressurization, etc. The embodiment of the present invention does not specifically limit the pressurization method of each device in the production equipment of continuous fiber reinforced thermoplastic composite material plates; for the convenience of describing the operation mode of the present production equipment, this embodiment takes the multi-roller pressurization mode as an example. On the basis that the above-mentioned first conveying mechanism 21 and the second conveying mechanism 22 also include multiple traction rollers, the heating and pressurizing device 3, the cooling and pressurizing device 4, the heating and pressurizing and thickness setting device 5, and the cooling and pressurizing and thickness setting device 6 all include multiple pressurizing rollers, and the axes of the multiple pressurizing rollers are parallel to the axes of the traction rollers. The pressurizing rollers in the area surrounded by the first support belt 211 and the first support belt 211 are close to the first object. The belt body of the material channel 8 is in contact with the pressure roller in the area surrounded by the first synchronous belt 212, and the belt body of the first synchronous belt 212 is in contact with the belt body of the first material channel 8. The pressure roller in the area surrounded by the second support belt 221 is in contact with the belt body of the second support belt 221 close to the second material channel 9, and the pressure roller in the area surrounded by the second synchronous belt 222 is in contact with the belt body of the second synchronous belt 222 close to the second material channel 9. After starting the equipment, the pressure roller and the traction roller rotate in the same direction, driving the support belt (including the first support belt 211 and the second support belt 221) and the synchronous belt (including the first synchronous belt 212 and the second synchronous belt 222) arranged around the traction roller to rotate together, thereby pulling the material to move. When the material moves between the upper and lower pressure rollers arranged oppositely, the pressure roller applies pressure to the material by compressing the support belt and the synchronous belt. And the first material channel 8 can be adjusted in the vertical direction (i.e., the distance between the upper and lower pressure rollers arranged oppositely) by adjusting the distance between the upper and lower pressure rollers. Figure 1 Specifically, reducing the distance between the upper and lower pressure rollers arranged opposite to each other can increase the pressure applied by the pressure roller on the material, and increasing the distance between the upper and lower pressure rollers arranged opposite to each other can reduce the pressure applied by the pressure roller on the material.

[0051] Optionally, the heating temperature of the material by the heating and pressurizing device 3 and the heating and pressurizing thickness setting device 5 ranges from room temperature to 400°C, and the cooling temperature of the material by the cooling and pressurizing device 4 and the cooling and pressurizing thickness setting device 6 ranges from -20°C to room temperature.

[0052] Optionally, unlike the above-mentioned cooling and pressurizing device 4, the cooling temperature of the material ranges from -20°C to room temperature. In this embodiment, the cooling temperature of the material by the cooling and pressurizing device 4 can be set to be several tens of degrees lower than the heating temperature of the heating and pressurizing device 3, and it is only necessary to ensure that the material can be demolded and transferred after passing through the cooling and pressurizing device 4; because the material needs to be heated after passing through the heating and pressurizing thickness setting device 5 after passing through the cooling and pressurizing device 4, the temperature reduction here is as small as possible, and it is only necessary to ensure that the material can be demolded and transferred to avoid energy waste.

[0053] Optionally, on the basis of the above-mentioned heating and pressurizing thickness setting device 5 using hot air to heat the material, the cooling of the material by the cooling and pressurizing device 4 and the cooling and pressurizing thickness setting device 6 and the heating of the material by the heating and pressurizing device 3 are all transferred to the material through contact. This embodiment does not specifically limit the heating and cooling methods. For the convenience of description, the following examples are given to illustrate that heating can be hot oil transferred to the support belt and the synchronous belt through the roller of the pressure roller set in the heating and pressurizing device 3, and thus transferred to the material; it can also be heating by infrared, heating rod radiation, electromagnetic and other methods; cooling can be cold water transferred to the support belt and the synchronous belt through the roller of the pressure roller set in the cooling and pressurizing device 4 and the cooling and pressurizing thickness setting device 6, and thus transferred to the material.

[0054] Optionally, combined Figure 1 As shown, the unwinding device 1 includes a plurality of linked unwinding machines 11, and the unwinding speeds of the plurality of unwinding machines 11 are the same.

[0055] Since the continuous fiber reinforced thermoplastic composite material plate in this embodiment is composed of multiple materials, the unwinding device 1 includes multiple linked unwinders 11, and a material is wound on each unwinder 11; the unwinding speed of each unwinder 11 is the same, so that after the multiple materials are stacked together on the conveyor 2, they are transported along the conveyor 2. Figure 1 The positive direction of the X axis is transmitted from the unwinding device 1 to the cutting device 7.

[0056] Combine Figure 1 、 Figure 2 As shown, an embodiment of the present invention further provides a method for producing a continuous fiber reinforced thermoplastic composite material plate, using the above-mentioned production equipment for the continuous fiber reinforced thermoplastic composite material plate, comprising the following steps:

[0057] Step S100: Wrap the material on the unwinding device 1, unwind the material through the unwinding device 1, so that the material is stacked on the conveying device 2 and is conveyed from the unwinding device 1 to the cutting device 7 along the conveying device 2;

[0058] Step S200: the laminated materials are sequentially impregnated under the pressure and heating treatment of the heating and pressurizing device 3 and solidified under the cooling and pressurizing treatment of the cooling and pressurizing device 4;

[0059] Step S300: the solidified material is expanded by the heating and pressurizing thickness setting device 5 and is shaped by the cooling and pressurizing thickness setting device 6.

[0060] Step S400: The shaped material enters the cutting device 7, and the cutting device 7 cuts and collects the shaped material.

[0061] The present embodiment provides a method for producing a continuous fiber reinforced thermoplastic composite material sheet, which is produced by a continuous fiber reinforced thermoplastic composite material sheet production device; the material is wound on the unwinding device 1, specifically, the material includes a variety of materials, and accordingly, the unwinding device 1 includes a plurality of linked unwinders 11 with the same unwinding speed, and each material (i.e., various materials of the material) is wound on each unwinder 11 respectively; the unwinding device 1 is unwound (unloaded), and each material wound on each unwinder 11 is flattened and stacked on the conveying device 2, and is conveyed from the unwinding device 1 to the cutting device 7 along with the conveying device 2, and is conveyed during the conveying operation. During the operation, the laminated materials are first subjected to a pressurized heating treatment by the heating and pressurizing device 3 so that the materials are fully impregnated with each other; then, they are subjected to a cooling and pressurizing treatment by the cooling and pressurizing device 4 so that the temperature of the impregnated materials is reduced and finally solidified to facilitate demoulding and transfer of the materials; then, the materials are subjected to a heating and pressurizing thickness setting treatment by the heating and pressurizing thickness setting device 5 so that the heated and expanded materials are initially fixed in thickness during the pressurizing process; finally, the materials are subjected to a cooling and pressurizing thickness setting treatment by the cooling and pressurizing thickness setting device 6 so that the materials are shaped and thickened to become continuous fiber reinforced thermoplastic composite material sheets; finally, they are cut into the shape required for production by the cutting device 7 and the materials are collected and packaged.

[0062] For the production method of continuous fiber reinforced thermoplastic composite sheet, the impregnation of the material can make the material have higher toughness, so as to improve the tensile strength and impact resistance of the continuous fiber reinforced thermoplastic composite sheet, and the expansion of the material increases the thickness of the material and reduces the density, so that the continuous fiber reinforced thermoplastic composite sheet has a smaller density, so as to improve the heat insulation, shock absorption, impact resistance, energy absorption and other capabilities of the continuous fiber reinforced thermoplastic composite sheet; the solidification of the material between the impregnation process and the expansion process is a transition process from impregnation to expansion of the material. Through the cooling and pressurizing treatment of the cooling and pressurizing device 4, the molten material after impregnation is solidified due to the temperature reduction, thereby reducing the difficulty of demolding the material after impregnation, so as to facilitate the demolding of the material; the solidified material can directly enter the expansion process after demolding, and the expansion process of the solidified material is relatively easy to control compared to the molten material; specifically, compared with the material directly entering the expansion process after impregnation, due to the The material is in a molten state, which is not conducive to the expansion control of the material during the expansion process. Therefore, the cooling and pressurizing device 4 is very necessary for the solidification of the material. Furthermore, according to design requirements, by changing the expansion process conditions (such as heating temperature), continuous fiber reinforced thermoplastic composite material sheets with different densities can be obtained. In this way, using the production method of continuous fiber reinforced thermoplastic composite material sheets, the production equipment of continuous fiber reinforced thermoplastic composite material sheets can realize the production of high-impact and density-adjustable continuous fiber reinforced thermoplastic composite material sheets on a single production line. On this production line, the material is solidified after the impregnation process is completed and then directly enters the expansion process. Compared with setting up multiple production lines for production, this eliminates the step of transferring the impregnated material on the impregnation production line to the expansion production line over a long distance, reduces the difficulty of demolding and transferring the impregnated material, simplifies the production process, and greatly saves production resources and reduces energy consumption, thereby producing low-cost sheets.

[0063] Furthermore, based on the above-mentioned conveying device 2 including the first conveying mechanism 21 and the second conveying mechanism 22 , step S200 is performed in the first material channel 8 in the first conveying mechanism 21 , and step S300 is performed in the second material channel 9 in the second conveying mechanism 22 .

[0064] Furthermore, the thickness of the material entering the first material channel 8 gradually decreases during the conveying process, and the thickness of the material entering the second material channel 9 first increases and then gradually decreases. The thickness of the material is the thickness of the material in the vertical direction (i.e. Figure 1 The dimensions in the up-down direction (also the Z-axis direction).

[0065] When producing a continuous fiber reinforced thermoplastic composite material plate, during the process of step S200, the wedge-shaped first material channel 8 cooperates with the heating and pressurizing device 3 and the cooling and pressurizing device 4 to pressurize the material in the first material channel 8 so that Figure 1 In the direction from left to right in the figure, the size of the material in the first material channel 8 in the Z-axis direction gradually decreases, that is, the thickness of the material gradually becomes thinner; in the process of step S300, the material in the second material channel 9 is first expanded by the heating and pressurizing thickness setting device 5, so that the thickness of the material increases, that is, the material in the second material channel 9 is first expanded, resulting in an increase in its size in the Z-axis direction. Thereafter, with the cooperation of the wedge-shaped second material channel 9, the heating and pressurizing thickness setting device 5, and the cooling and pressurizing thickness setting device 6, the size of the material in the Z-axis direction gradually decreases. Therefore, the size of the material in the second material channel 9 in the vertical direction first increases and then gradually decreases; in this way, a plate that meets the requirements is produced.

[0066] Optionally, the pressure applied to the material by the cooling and pressurizing device 4 is greater than the pressure applied to the material by the heating and pressurizing device 3 , and the pressure applied to the material by the cooling and pressurizing thickness setting device 6 is greater than the pressure applied to the material by the heating and pressurizing thickness setting device 5 .

[0067] During the production process of continuous fiber reinforced thermoplastic composite material sheets, the pressure applied to the material by the heating and pressurizing device 3 is in the range of 1-20 MPa, the pressure applied to the material by the cooling and pressurizing device 4 is in the range of 0.02-20 MPa, the pressure applied to the material by the heating and pressurizing device 5 is in the range of 0.02-3 MPa, and the pressure applied to the material by the cooling and pressurizing device 6 is in the range of 0.02-20 MPa. On this basis, the pressure applied to the material by the cooling and pressurizing device 4 is greater than the pressure applied to the material by the heating and pressurizing device 3, so that the material is cooled under a higher pressure when passing through the cooling and pressurizing device 4, thereby reducing the temperature of the material and solidifying the molten material after the heating and pressurizing treatment by the heating and pressurizing device 3, which is convenient for demolding and transfer of the material. The pressure applied to the material by the cooling and pressurizing device 6 is greater than the pressure applied to the material by the heating and pressurizing device 5, so as to facilitate the thickness determination of the material.

[0068] Optionally, in the direction from the unwinding device 1 to the cutting device 7 , the pressure applied to the material by the heating and pressurizing device 3 gradually increases.

[0069] During the production process of continuous fiber reinforced thermoplastic composite sheets, when the material first enters the heating and pressurizing zone (i.e., the area between a pair of heating and pressurizing devices 3), the pressure exerted on the material by the heating and pressurizing device 3 is relatively small. As the material gradually penetrates into the heating and pressurizing zone, the pressure exerted on the material gradually increases. Specifically, in the direction from the unwinding device 1 to the cutting device 7, the pressure exerted on the material by the heating and pressurizing device 3 gradually increases to facilitate the initial shaping of the material.

[0070] Optionally, the material includes surface reinforcement material, core reinforcement material, and resin material; the surface reinforcement material is a woven continuous fiber cloth, and the core reinforcement material is a continuous fiber felt with randomly arranged fiber directions and subjected to needle punching or hydroentanglement; and the order in which the materials are stacked on the conveying device 2 is from top to bottom: resin material, surface reinforcement material, resin material, core reinforcement material, resin material, surface reinforcement material, and resin material.

[0071] In this embodiment, the materials on the unwinding device 1 include surface reinforcement material, core reinforcement material, and resin material, which are used to produce continuous fiber reinforced thermoplastic composite material plates.

[0072] The surface reinforcement material is a woven continuous fiber cloth, which is made of one of glass fiber, carbon fiber, basalt fiber, and aramid fiber. The fiber cloth is a composite material made of carbon fiber, which has extremely high strength, is ultra-light, and is resistant to high temperatures and high pressures. Therefore, using the woven continuous fiber cloth as one of the raw materials for making continuous fiber reinforced thermoplastic composite sheets greatly improves the performance of the continuous fiber reinforced thermoplastic composite sheets. Furthermore, since the surface material of the sheet is primarily subjected to tension when impacted, using the woven continuous fiber cloth as the surface reinforcement material greatly improves the impact resistance of the continuous fiber reinforced thermoplastic composite sheet.

[0073] The core layer reinforcement material is a continuous fiber mat that has been needle-punched or hydroentangled and has randomly arranged fibers. The continuous fiber mat is made of one of the following materials: glass fiber, carbon fiber, basalt fiber, or aramid fiber. When the board is impacted, the surface material is primarily subjected to tension, while the core material is subjected to shear. Therefore, the continuous fiber mat, which has excellent properties such as high temperature resistance, oxidation resistance, radiation resistance, thermal insulation, high shear strength, and adaptability to use in various environments, is used as the core layer reinforcement material of the continuous fiber reinforced thermoplastic composite board. This further enhances the impact resistance of the continuous fiber reinforced thermoplastic composite board. Furthermore, the needle-punched or hydroentangled continuous fiber mat can be expanded under certain conditions, maintaining sufficiently high rigidity and impact resistance while having a low density. Furthermore, the porous structure formed inside the continuous fiber mat has the functions of sound absorption, heat insulation, shock absorption, and energy absorption, further enhancing the shock absorption and energy absorption capabilities of the continuous fiber reinforced thermoplastic composite board.

[0074] The resin material includes one or more of polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyamide, polyphenylene sulfide, polyetherimide, polyoxymethylene, and polyetheretherketone. The resin material is disposed on both sides of the surface reinforcement material and on both sides of the core reinforcement material. When the laminated materials pass through the heating and pressurizing device 3, the resin material melts and penetrates between the fibers of the surface reinforcement material and the core reinforcement material, thereby improving the impact resistance of the continuous fiber reinforced thermoplastic composite material sheet. The melted resin acts as an adhesive, improving the stability of the connection between the surface reinforcement material and the core reinforcement material, thereby enhancing the stability of the continuous fiber reinforced thermoplastic composite material sheet.

[0075] When producing continuous fiber reinforced thermoplastic composite material sheets, the core layer reinforcement material is arranged between two or more layers of surface reinforcement materials, and resin materials are provided on the upper and lower sides of the surface reinforcement materials and the core layer reinforcement materials. The resin material wraps the surface reinforcement material in the middle so that the resin material can penetrate into the surface reinforcement material after melting. Similarly, the resin material wraps the core layer reinforcement material in the middle so that the resin material can penetrate into the core layer reinforcement material after melting. When producing continuous fiber reinforced thermoplastic composite material sheets using the production method of continuous fiber reinforced thermoplastic composite material sheets, during the impregnation process, the resin in the laminated material melts after heating and penetrates into the surface reinforcement material under the action of pressure. The core reinforcement material and the reinforcing fiber bundle of the core reinforcement material are wrapped with molten resin to facilitate the wrapping of each fiber bundle, and then cooled under pressure until the resin solidifies, that is, the structure of the reinforcing fiber is also locked; the subsequent expansion process is: heating the material after cooling and solidification treatment to melt the resin again. At this time, the resin loses its constraint on the reinforcing fiber bundle, and since the continuous fiber felt used as the core reinforcement material is generally manufactured by a non-woven method to obtain a felt with a three-dimensional structure mixed with reinforcing fibers and resin fibers, the reinforcing fiber bundle of the core reinforcement material begins to stretch and expand due to heat, and the density decreases, so that the continuous fiber reinforced thermoplastic composite material plate finally produced has sound absorption and heat insulation properties. , shock absorption and other properties; further, the heating of the puffing process is achieved by the convection of hot air, so that the reinforcing fiber bundles of the core layer reinforcement material are further accelerated to stretch and expand under the action of hot air; for the surface reinforcement materials located on the upper and lower sides of the core layer reinforcement material, since they are woven continuous fiber cloths, they are not affected by the puffing process, ensuring that the continuous fiber reinforced thermoplastic composite material plate finally produced has excellent impact resistance and tensile strength; after the puffing process, the material is solidified and fixed in thickness under the action of the cooling, pressurizing and thickness setting device 6, and the resin material is solidified again to lock the fiber bundles in the surface reinforcement material and the core layer reinforcement material, so that a continuous fiber reinforcement with stable performance is finally obtained. Strong thermoplastic composite material sheet; through the design of the structure of the continuous fiber reinforced thermoplastic composite material sheet, and the impregnation and puffing method in the production method of the continuous fiber reinforced thermoplastic composite material sheet, a continuous fiber reinforced thermoplastic composite material sheet with excellent impact resistance, tensile strength, sound absorption, heat insulation, shock absorption and other properties and adjustable density (for example, by changing the final fixed thickness of the sheet) is finally obtained; through the design of the structure of the continuous fiber reinforced thermoplastic composite material sheet, and combined with the production method of the continuous fiber reinforced thermoplastic composite material sheet, the continuous fiber reinforced thermoplastic composite material sheet produced has excellent mechanical properties, and thus has broad application prospects.

[0076] In order to further understand the structural design of continuous fiber reinforced thermoplastic composite materials, the following example is given to illustrate that in the vertical direction (i.e. Figure 1 In the vertical direction (also the Z-axis direction), the order of stacking materials on the conveying device 2 is from top to bottom: resin material, surface reinforcement material, resin material, core reinforcement material, resin material, surface reinforcement material, resin material; wherein the core reinforcement material is a continuous fiber felt with randomly arranged fiber directions and subjected to needle punching or spunlace, which is generally manufactured by a non-woven method to obtain a felt with a three-dimensional structure mixed with reinforcement fibers and resin fibers, and the surface reinforcement material is a woven continuous fiber cloth; combined with the production method of continuous fiber reinforced thermoplastic composite material plates, after the laminated materials are heated and pressurized by the heating and pressurizing device 3, the resin melts and gradually penetrates into the fiber bundles of the fiber cloth and the core fiber felt to complete the impregnation; when the impregnated material passes through the pressurized cooling device, the material temperature is reduced to below the melting point of the resin while maintaining a relatively high pressure, so that the heated The molten material after the heating and pressurizing treatment of the hot pressurizing device 3 is solidified, which is convenient for demoulding and transfer; when the solidified material passes through the heating and pressurizing thickness setting device 5, the material is heated again to above the melting point of the resin. Since the blowing mechanism in the heating and pressurizing thickness setting device 5 blows hot air to the material, the hot air convects up and down and left and right in the drying tunnel-type heating and pressurizing thickness setting area, so that the impregnated continuous fiber felt in the core layer of the material begins to expand and the thickness increases, while the continuous fiber cloth on the surface is not affected; the expanded material is initially thickened under the pressure applied by the heating and pressurizing thickness setting device 5. When the material after the initial thickness is cooled and pressurized, the material is clamped by the second support belt 221 and the second synchronous belt 222 with mesh holes and multiple groups of pressure rollers, so that the material is shaped and thickened while cooling, forming a continuous fiber reinforced thermoplastic composite material plate; finally, cutting and collecting the material.

[0077] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A production equipment for continuous fiber reinforced thermoplastic composite material plate, characterized in that: include: A conveying device (2), an unwinding device (1), a heating and pressurizing device (3), a cooling and pressurizing device (4), a heating and pressurizing thickness-setting device (5), a cooling and pressurizing thickness-setting device (6) and a cutting device (7); the unwinding device (1) and the cutting device (7) are respectively arranged at two ends of the conveying device (2); in the direction from the unwinding device (1) to the cutting device (7), the heating and pressurizing device (3), the cooling and pressurizing device (4), the heating and pressurizing thickness-setting device (5) and the cooling and pressurizing thickness-setting device (6) are sequentially arranged inside the conveying device (2), and the pressure applied to the material by the heating and pressurizing device (3) gradually increases.

2. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 1, characterized in that: The conveying device (2) includes a first conveying mechanism (21) and a second conveying mechanism (22). In the direction from the unwinding device (1) to the cutting device (7), the first conveying mechanism (21) and the second conveying mechanism (22) are arranged adjacent to each other; the heating and pressurizing device (3) and the cooling and pressurizing device (4) are both arranged inside the first conveying mechanism (21), and the heating and pressurizing thickness-fixing device (5) and the cooling and pressurizing thickness-fixing device (6) are both arranged inside the second conveying mechanism (22).

3. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 2, characterized in that: The first conveying mechanism (21) comprises a first supporting belt (211) and a first synchronous belt (212) which are arranged opposite to each other, and the second conveying mechanism (22) comprises a second supporting belt (221) and a second synchronous belt (222) which are arranged opposite to each other; the first synchronous belt (212) is located above the first supporting belt (211), and the second synchronous belt (222) is located above the second supporting belt (221), and the size of the first supporting belt (211) in the direction from the unwinding device (1) to the cutting device (7) is larger than the size of the first synchronous belt (212) in the direction from the unwinding device (1) to the cutting device (7).

4. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 3, characterized in that: The first supporting belt (211), the first synchronous belt (212), the second supporting belt (221) and the second synchronous belt (222) are all ring-shaped; the heating and pressurizing device (3) and the cooling and pressurizing device (4) are both provided in the area enclosed by the first supporting belt (211) and the area enclosed by the first synchronous belt (212); the heating and pressurizing thickness-fixing device (5) and the cooling and pressurizing thickness-fixing device (6) are both provided in the area enclosed by the second supporting belt (221) and the area enclosed by the second synchronous belt (222).

5. The production equipment of the continuous fiber reinforced thermoplastic composite material plate according to any one of claims 1 to 4, characterized in that: The pressure applied to the material by the cooling and pressurizing device (4) is greater than the pressure applied to the material by the heating and pressurizing device (3), and the pressure applied to the material by the cooling and pressurizing thickness setting device (6) is greater than the pressure applied to the material by the heating and pressurizing thickness setting device (5).

6. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 3 or 4, characterized in that: The heating and pressurizing thickness setting device (5) includes a first pressing mechanism and a first spacing adjustment mechanism, and the first spacing adjustment mechanism is suitable for adjusting the pressing spacing of the first pressing mechanism; the cooling and pressurizing thickness setting device (6) includes a second pressing mechanism and a second spacing adjustment mechanism, and the second spacing adjustment mechanism is suitable for adjusting the pressing spacing of the second pressing mechanism; when the first pressing mechanism and the second pressing mechanism are both pressed in place, the pressing spacing of the first pressing mechanism is greater than the pressing spacing of the second pressing mechanism.

7. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 6, characterized in that: The heating, pressurizing and thickness-fixing device (5) further comprises an air blowing mechanism, and mesh holes are provided on both the second supporting belt (221) and the second synchronous belt (222), and the hot air blown out by the air blowing mechanism contacts the material through the mesh holes.

8. The production equipment of continuous fiber reinforced thermoplastic composite material plate according to claim 3 or 4, characterized in that: A first material channel (8) is formed on one side of the first supporting belt (211) facing the first synchronous belt (212) and on one side of the first synchronous belt (212) facing the first supporting belt (211); a second material channel (9) is formed on one side of the second supporting belt (221) facing the second synchronous belt (222) and on one side of the second synchronous belt (222) facing the second supporting belt (221); the first material channel (8) is communicated with the second material channel (9); and in the direction from the unwinding device (1) to the cutting device (7), the dimensions of the first material channel (8) and the second material channel (9) in the vertical direction gradually decrease.

9. A method for producing a continuous fiber reinforced thermoplastic composite material plate, using the production equipment for a continuous fiber reinforced thermoplastic composite material plate according to any one of claims 1 to 8, characterized in that: include: The material is wound on an unwinding device (1) and unwound through the unwinding device (1), so that the material is stacked on a conveying device (2) and conveyed from the unwinding device (1) to a cutting device (7) along the conveying device (2); The laminated materials are sequentially impregnated under a pressurized heating process in a heating and pressurizing device (3) and solidified under a cooling and pressurizing process in a cooling and pressurizing device (4); The solidified material is expanded in a heating and pressurizing thickness setting process of a heating and pressurizing thickness setting device (5) and is shaped in a cooling and pressurizing thickness setting process of a cooling and pressurizing thickness setting device (6). The shaped material enters the cutting device (7), and the cutting device (7) cuts and collects the shaped material.

10. The method for producing a continuous fiber reinforced thermoplastic composite material plate according to claim 9, wherein: The materials include surface reinforcement material, core reinforcement material, and resin material; the surface reinforcement material is a woven continuous fiber cloth, and the core reinforcement material is a continuous fiber felt with randomly arranged fiber directions and subjected to needle punching or hydroentanglement; and the order in which the materials are stacked on the conveying device (2) from top to bottom is: the resin material, the surface reinforcement material, the resin material, the core reinforcement material, the resin material, the surface reinforcement material, and the resin material.

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