Manufacturing process and production line of a laminated continuous composite fiber pultruded grid

Abstract

The present invention discloses a manufacturing process for a laminated continuous composite fiber pultruded grid, which solves the problems existing in the prior production process of first weaving and then curing, such as the inability to guarantee the fiber-resin bonding rate and the inability to fix the fiber volume of the product, resulting in a large discreteness in the performance of the product. The invention creatively uses a laminated cured fiber output unit that can output multiple layers of cured fibers in parallel. By using the laminated cured fiber output unit, multiple layers of cured fibers can be output simultaneously. A warp cured fiber output unit and a weft cured fiber output unit that are vertically distributed along the discharging direction of the cured fibers are adopted. After the warp cured fibers output by the warp cured fiber output unit are inserted into the weft cured fibers output by the weft cured fiber output unit, the warp cured fibers inserted into the weft cured fiber layer are truncated at a certain distance, and after initial bonding, an initial fiber grid can be formed.

Description

Technical Field

[0001] The present invention relates to the field of fiber pultruded grids, and particularly to a manufacturing process and production line for laminated continuous composite fiber pultruded grids. Background Art

[0002] The pultruded process grid is based on the pultrusion process and has all the performance characteristics of traditional pultruded products. At the same time, a large number of fibers in the warp and weft directions are enhanced, enabling the product to have excellent performance in terms of force bearing.

[0003] For example, in the patent application with the application number: CN201410285340.3 and the application name: A High-Strength Continuous Composite Fiber Grid, Production Method and Production Line; and another example with the application number: CN201911296602.5 and the application name: An Integrated Carbon Fiber Composite Grid Structure and Manufacturing Method, etc., the manufacturing methods of existing grids are disclosed, which are first woven and then cured.

[0004] However, the production process of first weaving and then curing may lead to problems such as the inability to guarantee the fiber-resin bonding rate, the inability to fix the fiber volume of the product, and large discreteness in the product performance.

[0005] If the fibers are cured first, there will be problems with weaving. Since the cured fiber bundles are no longer as soft as the uncured fibers, they cannot be machine-woven, and automated production cannot be achieved by relying on machines. Instead, it can only rely on manual placement, resulting in high labor intensity for workers and low productivity.

[0006] At the same time, manual production inevitably has drawbacks such as waste of raw materials, large consumption of labor, and strong environmental odors during the production process. Summary of the Invention

[0007] The technical problem to be solved by the present invention: The purpose of the present invention is to solve the deficiencies in the prior art and provide a manufacturing process for pultruded grids that can achieve fiber curing first and then weaving, realize automated production of pultruded grids, and achieve high production efficiency and stable quality.

[0008] The technical solution of the present invention: The manufacturing process of a laminated continuous composite fiber pultruded grid according to the present invention includes the following steps;

[0009] A. Divide two laminated curing fiber output units that can output multiple layers of cured fibers on the same horizontal plane into a warp curing fiber output unit and a weft curing fiber output unit; wherein the warp curing fiber output unit and the weft curing fiber output unit are vertically distributed along the discharging direction of the cured fibers; such that multiple layers of warp cured fibers output by the warp curing fiber output unit are interspersed between multiple layers of weft cured fibers output by the weft curing fiber output unit;

[0010] B. Cut the warp cured fibers inserted into the weft cured fiber layer at a certain distance. The cut warp cured fibers fall on the continuous weft cured fiber layer, and the weft cured fiber layer drives the cut warp cured fibers to move forward, ensuring that the cut warp cured fibers are relatively perpendicular to the continuous weft cured fibers.

[0011] C. Bond and cure the relatively perpendicular cut warp cured fibers and continuous weft cured fibers to form a shape.

[0012] Furthermore, step C also includes the following steps:

[0013] a) Initially bond the continuous weft cured fibers and the cut warp cured fibers placed relatively perpendicular to ensure that when the continuous weft cured fibers and the cut warp cured fibers come into contact, there is sufficient resin to bond the two, but not completely fix them, so that the cut warp cured fibers have a certain displacement ability compared to the continuous weft cured fibers, forming an initial fiber grid;

[0014] b) Conduct an initial interlayer composite of multiple layers of the initial fiber grid, changing from the original multiple separated monomers to a single integrated entity in contact and connection with each other, forming a pre-cured fiber grid; shape the pre-cured fiber grid by heating, and eliminate the first internal stress of the product through the angle combination and temperature control of multiple groups of hot pressing rollers;

[0015] c) Immerse the pre-cured fiber grid as a whole in a glue tank so that the resin fully wraps the interlayer joints and the peripheries of the joints of the multiple layers of the initial fiber grid in the pre-cured fiber grid, as well as the joints and the peripheries of the joints between the warp cured fibers and the weft cured fibers;

[0016] d) Conduct a heating and baking treatment on the pre-cured fiber grid that has been immersed as a whole, causing the resin to be heated and enter the gel state. At this time, the resin will go through a process of changing from thick to thin and then back to thick;

[0017] e) The pre-cured fiber grid enters a curing oven to completely cure the resin on the pre-cured fiber grid, obtaining a cured fiber grid. After curing, cut the continuous multi-layer weft cured fibers at the corresponding position to obtain the finished cured fiber grid.

[0018] Furthermore, in step A, the specific process of the laminated cured fiber output unit outputting multiple layers of cured fibers specifically includes: drawing out fibers from a fiber yarn rack, infiltrating the fibers with resin through an impregnating tank, and the infiltrated fibers respectively enter a laminated curing mold with a heating function through a fiber splitting mechanism. When the fibers with resin pass through the laminated curing mold, the resin undergoes a curing reaction, and under the action of a traction device, the cured product is pulled out of the mold to form cured fibers with each layer being relatively parallel.

[0019] Furthermore, in the step d, the resin overflowing from the initially cured fiber grid is processed and collected.

[0020] Furthermore, in the step e, before the initially cured fiber mesh enters the curing oven, it also includes cooperating with a robot to perform fixed-point resin filling on the initially cured fiber mesh to ensure resin filling between the longitudinal fiber layers and the latitudinal fiber layers in the initially cured fiber mesh.

[0021] Furthermore, the warp curing fiber output unit can output the first warp curing fiber layer, the second warp curing fiber layer and the third warp curing fiber layer in parallel;

[0022] The weft-direction curing fiber output unit can output the first weft-direction curing fiber layer and the second weft-direction curing fiber layer in parallel;

[0023] A first weft direction curing fiber layer is disposed between the first warp direction curing fiber layer and the second warp direction curing fiber layer; and a second weft direction curing fiber layer is disposed between the second warp direction curing fiber layer and the third warp direction curing fiber layer.

[0024] The present application also includes a stacked continuous composite fiber bidirectional pultrusion grid production line, including a warp curing fiber output unit, a weft curing fiber output unit, a multi-layer curing fiber assembly unit, a multi-layer curing fiber composite unit, a multi-layer curing fiber injection unit, a multi-layer curing fiber curing unit, a traction unit and a cutting and winding unit;

[0025] The warp curing fiber output unit and the weft curing fiber output unit are vertically distributed along the curing fiber output direction; the warp curing fiber output unit and the weft curing fiber output unit are both composed of multiple layers of curing fiber output units;

[0026] The multi-layer curing fiber output unit comprises a creel, a tension roller, a dipping tank and a layered curing mold;

[0027] The multi-layer curing fiber composite unit, the multi-layer curing fiber injection unit, the multi-layer curing fiber curing unit, the traction unit and the cutting and winding unit are arranged in sequence along a straight line;

[0028] The warp layered curing mold of the warp curing fiber output unit is provided with a plurality of warp curing outlet layers distributed in parallel;

[0029] The weft-direction layered curing mold of the weft-direction curing fiber output unit is provided with a plurality of parallelly distributed weft-direction curing outlet layers;

[0030] In the height direction, the warp direction solidification outlet layer is located in the middle of two adjacent weft direction solidification outlet layers.

[0031] Furthermore, a warp cutting machine is provided at the outlet of the warp layered curing mould of the warp curing fiber output unit.

[0032] Furthermore, the multi-layer curing fiber assembly unit includes a guiding device composed of a roller assembly, a straightening device and a glue dispensing device matched to ensure that the warp curing fibers and the weft curing fibers are relatively vertical.

[0033] Furthermore, the dispensing device mainly consists of a glue storage tank, a PLC control system, a peristaltic pump, a mechanical arm and a dispensing nozzle. The multi-layer cured fiber composite unit includes multiple groups of hot pressing rollers and a multi-level guiding mechanism; a finishing and fixing unit is also provided between the multi-layer cured fiber composite unit and the multi-layer cured fiber injection unit; the finishing and fixing unit includes a mechanical arm and a heating gel unit.

[0034] The beneficial effects of the present invention compared with the prior art are as follows:

[0035] Compared with the prior art, the present application creatively uses a stacked curing fiber output unit that can output multiple layers of curing fibers in parallel. The stacked curing fiber output unit can output multiple layers of curing fibers at the same time, and adopts a warp curing fiber output unit and a weft curing fiber output unit that are vertically distributed along the curing fiber output direction. After the warp curing fibers output by the warp curing fiber output unit are inserted into the weft curing fibers output by the weft curing fiber output unit, the warp curing fibers inserted into the weft curing fiber layer are cut off at a certain distance, and after initial bonding, an initial fiber grid can be formed, which solves a series of problems caused by the existing production process of weaving first and then curing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the production process of the weft-direction solidified fiber of the present invention;

[0038] Figure 3 It is a schematic diagram of the height of the meridional solidification outlet layer and the meridional solidification outlet layer in the present invention;

[0039] Figure 4 It is a schematic structural diagram of the pultruded grid manufactured according to the present invention. DETAILED DESCRIPTION

[0040] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0041] like Figures 1-4The manufacturing equipment for the manufacturing process of a laminated continuous composite fiber pultruded grid according to the present invention is shown, including a warp-direction cured fiber output unit 1, a weft-direction cured fiber output unit 2, a multi-layer cured fiber assembly unit 3, a multi-layer cured fiber composite unit 4, a finishing and fixing unit 45, a multi-layer cured fiber injection unit 5, a multi-layer cured fiber curing unit 6, a traction unit 7, and a cutting and winding unit 8; the multi-layer cured fiber composite unit 4, the multi-layer cured fiber injection unit 5, the multi-layer cured fiber curing unit 6, the traction unit 7, and the cutting and winding unit 8 are arranged in a straight line in sequence;

[0042] The warp-direction cured fiber output unit 1 and the weft-direction cured fiber output unit 2 are vertically distributed along the discharging direction of the cured fiber; both the warp-direction cured fiber output unit and the weft-direction cured fiber output unit are composed of multi-layer cured fiber output units;

[0043] The multi-layer cured fiber output unit includes a fiber yarn rack 11, a tension roller 12, an impregnating tank 13, and a stratified curing die;

[0044] As shown in FIG. 3, a plurality of parallelly distributed warp-direction cured outlet layers 1141 are provided on the warp-direction stratified curing die 114 of the warp-direction cured fiber output unit 1;

[0045] A plurality of parallelly distributed weft-direction cured outlet layers 2141 are provided on the weft-direction stratified curing die 214 of the weft-direction cured fiber output unit 2;

[0046] In the height direction, the warp-direction cured outlet layer 1141 is in the middle position between two adjacent weft-direction cured outlet layers 2141, so that the multi-layer warp-direction cured fibers 10 output by the warp-direction cured fiber output unit 1 can directly penetrate into the layers between the multi-layer weft-direction cured fibers 20 output by the weft-direction cured fiber output unit 2, completing the preliminary crossing of the warp-direction fibers and the weft-direction fibers.

[0047] A warp-direction cutting machine is provided at the outlet position of the radial stratified curing die 114 of the warp-direction cured fiber output unit 1.

[0048] The multi-layer cured fiber assembly unit 3 includes a guiding device composed of a roller assembly, an aligning device for ensuring the relative perpendicularity of the warp-direction cured fiber and the weft-direction cured fiber, and a dispensing device. Among them, the dispensing device mainly consists of a glue storage tank, a PLC control system, a peristaltic pump, a robotic arm, and a dispensing nozzle.

[0049] The multi-layer cured fiber composite unit 4 includes multiple groups of hot pressing rollers and multiple-stage guiding mechanisms.

[0050] The finishing and fixing unit 45 includes a robotic arm and a heating gel unit.

[0051] The specific operation method of the present invention is as follows:

[0052] 1. Fibers are drawn from the fiber yarn rack 11, passed through the impregnation tank 13 for resin impregnation, and the impregnated fibers enter the layered curing mold respectively through the fiber yarn splitting mechanism. The layered curing mold has a heating function, and when the fibers with resin pass through the layered curing mold, the resin undergoes a curing reaction. Under the action of the traction device, the cured product is pulled out of the layered curing mold to form the latitudinal direction material. At the same time, in the longitudinal direction, the longitudinally cured fiber output unit 1 produces longitudinally cured fibers in the same way;

[0053] 2. Through the cutting mechanism, the longitudinally cured fibers inserted into the latitudinal cured fiber layer are cut off at a certain distance from the longitudinally cured outlet layer 1141. A number of parallelly distributed latitudinal cured outlet layers 2141 are provided on the latitudinal layered curing mold 214 of the latitudinal cured fiber output unit 2. This arrangement can first ensure the accuracy of the product in the latitudinal direction on the vertical plane, and secondly create a large enough gap between layers to facilitate the entry of the longitudinal direction tooling and products.

[0054] 3. After the longitudinally cured product leaves the traction and clamping, it enters the multi-layer cured fiber assembly unit 3 to form the initial fiber grid. The multi-layer cured fiber assembly unit 3 includes the following processes:

[0055] 1. Through the guiding mechanism, the cut longitudinally cured fibers are guided by the guiding mechanism to ensure the relative perpendicularity between the longitudinally cured fibers and the continuous latitudinal fibers. The guiding mechanism consists of multiple groups of roller sets. First, multiple groups of roller sets form a channel within a certain range to ensure the accuracy in the longitudinal direction. Second, multiple groups of rollers are driven by a servo motor to ensure that the longitudinally cured product can travel along a specific path to avoid blockage and deviation.

[0056] 2. Through the placement mechanism, the cut longitudinally cured fibers are placed by the placement mechanism so that the longitudinally cured fibers are speed-linked with the continuous latitudinal fibers. When the continuous latitudinal fibers move forward at a certain speed, while ensuring a certain spacing between the longitudinally cured fibers, through PLC calculation, the longitudinally cured fibers are placed regularly and quantitatively.

[0057] Among them, the placement mechanism and the guiding mechanism are combined mechanisms. When the longitudinally cured fibers are guided to the specified position by the guiding mechanism, the placement mechanism places the longitudinally cured fibers at a fixed point by loosening and grasping according to the PLC signal.

[0058] 3. Through the dispensing device, glue is sprayed on the connection points of the truncated warp-cured fibers and the continuous warp-cured fibers. The dispensing device mainly consists of a glue storage tank, a PLC controller, a peristaltic pump, a robotic arm, and a dispensing nozzle. When the PLC controller receives the dispensing signal, it controls the operation of the robotic arm to transport the dispensing nozzle connected to the robotic arm to the specified position. At this time, the peristaltic pump starts to work, extracts the resin from the glue storage tank, and discharges the glue from the dispensing nozzle through the pipeline. The glue discharge volume is controlled by the PLC controller to control the output of the peristaltic pump to achieve precision control.

[0059] When the truncated warp-cured fibers and the continuous warp-cured fibers come into contact, bonding control needs to be carried out on them. The dispensing lead, resin dosage, dispensing position, etc. are comprehensively calculated and judged by the PLC controller based on the feedback information of sensors such as the comprehensive equipment speed, weft position, warp position, ambient temperature, and ambient humidity, to ensure that when the truncated warp-cured fibers and the continuous warp-cured fibers come into contact, there is sufficient resin for bonding, but they cannot be completely bonded. The latitude and longitude products must have a certain displacement change ability, and it is ensured that there is no secondary curing reaction between the bonding resin and the later filling resin, resulting in weak point peeling of the products. At this time, the resin is in a heat-activated state, still having a certain fluidity, but it will not start a high-speed reaction and cure.

[0060] IV. After the initial fiber grid leaves the multi-layer cured fiber integrated unit 3, it enters the multi-layer cured fiber composite unit 4 to form a preliminarily cured fiber grid.

[0061] The multi-layer cured fiber composite unit 4 mainly consists of multiple groups of hot pressing rollers and multi-stage guiding mechanisms. The main functional characteristics of this unit are:

[0062] 1. Through multiple groups of hot pressing rollers, the multi-layer latitude and longitude products composed of broken warp-cured fibers and continuous warp-cured fibers are initially compounded, changing from the original multi-layer separated monomers to a whole that is in contact and connected with each other, forming a preliminarily cured fiber grid.

[0063] 2. The multi-layer latitude and longitude combined products are shaped by heating.

[0064] 3. Through the angle combination and temperature of multiple groups of hot pressing rollers, the initial internal stress of the fiber grid is eliminated for the first time. The internal stress of the truncated warp-cured fibers and the continuous warp-cured fibers in the initial fiber grid can be reduced by 80%, reducing the deformation of the product caused by stress.

[0065] 4. While the initial fiber grid passes through multiple groups of hot pressing rollers, the multi-stage guiding mechanism starts to play a role. During the forward movement of the initial fiber grid, the shape of the product is incrementally sorted.

[0066] Incremental sorting, that is, through a multi-level incremental precision guiding controller, the products are sorted and constrained, so as to standardize the dimensional errors of the products. It mainly targets to control the straightness in the vertical direction of the truncated warp cured fibers. Ensure that the error in the outermost straight line direction of the final product is less than 2 mm, and the error in the vertical drop is less than 1 mm.

[0067] V. After the initial fiber grid forms the initially cured fiber grid through the multi-layer cured fiber composite unit 4, it enters the sorting and fixing unit 45. The main functional characteristics of this unit are as follows:

[0068] 1. Sort the relative perpendicularity and spacing of the initially cured fiber grid. Multiple groups of manipulators can be used to fix multiple layers of the initially cured fiber grid simultaneously and run synchronously with the traction direction. Ensure the stability of the form structure of the initially cured fiber grid during the traveling process.

[0069] 2. Heat and shape the initially cured fiber grid in combination with the actual ambient temperature. Ensure that the relative displacement and deformation of the multi-layer longitude and latitude combined products in the subsequent process are less than 1 mm. At the same time, reheat the previous adhesive resin to make the resin in a reactive state and start to slowly gel. At this time, the resin has greater viscosity and reduced fluidity, but has not cured, avoiding secondary curing in the later stage and resulting in product performance problems.

[0070] VI. After the initially cured fiber grid leaves the sorting and fixing unit 45, it enters the multi-layer cured fiber injection unit 5 to form a re-impregnated fiber grid. The main functional characteristics of this unit are as follows:

[0071] 1. Conduct the first immersion-type overall infiltration on the initially cured fiber grid. Make the resin penetrate into the contact gaps between the truncated warp cured fibers and the continuous warp cured fibers between the layers in the initially cured fiber grid, so that the resin fully fills and wraps the contact parts between the warp cured fibers.

[0072] 2. Conduct heat baking treatment on the initially cured fiber grid filled with resin, so that the resin is heated a lot, starts to react at a high speed, and quickly enters the gel state. At this time, the resin will experience a process of changing from thick to thin and then thick again. During this change process, a large amount of excess resin will overflow from the multi-layer longitude and latitude combined products.

[0073] 3. Process and collect the resin overflowing from the initially cured fiber grid.

[0074] 4. Conduct fixed-point spray gun spraying and filling on the gaps between the warp cured fibers and the continuous warp cured fibers in the initially cured fiber grid. After the spraying is completed, repeat the processes 2, 3, and 4 twice.

[0075] 5. Using shadow contrast technology, conduct multi-faceted comparisons on the product, such as: grid spacing, lamination error, droplet quantity, cavity quantity, etc. Utilize the feedback information and cooperate with the manipulator to perform final fixed-point resin filling on the initially cured fiber grid to ensure the resin filling rate between layers of the product and form a re-impregnated fiber grid.

[0076] VII. The re-impregnated fiber grid enters the multi-layer curing fiber curing unit 6 to completely cure the product resin and obtain the cured fiber grid 9.

[0077] Among them, the multi-layer curing fiber integrated unit 3 can be installed in a multi-layer distribution at the gaps between layers of the continuously longitudinally cured fibers according to the actual needs of the product. The multi-layer curing fiber integrated unit 3 can be installed in a decentralized manner according to the actual conditions such as length and product gap. Finally, through the feedback data of the sensor and the calculation using the PLC, multi-layer synchronous operation is achieved. The multi-layer curing fiber integrated unit 3 is composed of multiple groups of functional components. Since the product requires that there must be longitudinally oriented fibers between each layer latitude, there is a situation where multiple groups of equipment cannot be installed in the same plane. At this time, the multi-layer distribution installation method needs to be used, that is, corresponding to the height of the latitudinal curing outlet layer 2141, a guiding mechanism, a placement mechanism, and a dispensing mechanism are provided on each layer to solve this problem.

[0078] The present invention is based on the pultrusion process and is a new pultruded grid manufacturing process generated by performing multi-directional, multi-layer, and linkage on the single-directional pultrusion of the traditional pultrusion process. It has the characteristics of being able to realize the curing of fibers first and then weaving, achieving automated production of pultruded grids, high production efficiency, and stable quality. The present invention creatively uses a laminated curing fiber output unit that can output multiple layers of cured fibers in parallel. Using the laminated curing fiber output unit, multiple layers of cured fibers can be output simultaneously. A longitudinally cured fiber output unit and a latitudinally cured fiber output unit that are vertically distributed along the discharging direction of the cured fibers are adopted. After the longitudinally cured fibers output by the longitudinally cured fiber output unit are inserted into the latitudinally cured fibers output by the latitudinally cured fiber output unit, at a certain distance, the longitudinally cured fibers inserted into the latitudinal cured fiber layer are cut off. After initial bonding, an initial fiber grid can be formed.

[0079] Secondly, since the present invention solves the technical problem of curing the fibers first and then weaving them, it enables on-line adjustment of the raw materials according to the actual environmental conditions. It realizes fixed-point and quantitative glue injection. It realizes real-time change and deployment that cannot be carried out manually, and will not cause resin waste. Especially when the temperature difference between day and night is large, this advantage is more obvious. Because when the ratio of resin to curing agent is fixed under certain environmental temperature and humidity conditions, it can be quantitatively proportioned according to the actual required time. When the environmental temperature rises, the addition amount of the curing agent and accelerator added to the resin needs to be appropriately reduced to avoid too fast resin reaction and prevent premature curing of the resin. The advantage of mechanical glue mixing is on-line glue mixing on demand, mixing as much as needed, without pre-mixing of resin with a fixed formula. Mechanical glue mixing can adjust the formula in real time according to the environmental temperature and humidity, effectively control the resin reaction time, and ensure the unity of product performance.

[0080] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above specific embodiments, and the above specific embodiments and the description in the specification are only for further explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the claims and their equivalents.

Claims

1. A laminated continuous composite fiber pultrusion grid production line, characterized in that: It includes a warp-direction cured fiber output unit (1), a weft-direction cured fiber output unit (2), a multi-layer cured fiber assembly unit (3), a multi-layer cured fiber composite unit (4), a multi-layer cured fiber injection unit (5), a multi-layer cured fiber curing unit (6), a traction unit (7), and a cutting and winding unit (8); The warp-direction cured fiber output unit (1) and the weft-direction cured fiber output unit (2) are on the same horizontal plane and are vertically distributed along the discharging direction of the cured fiber, and can output multiple layers of cured fibers in parallel; both the warp-direction cured fiber output unit and the weft-direction cured fiber output unit are composed of multi-layer cured fiber output units; The multi-layer cured fiber output unit includes a yarn rack (11), a tension roller (12), an impregnating tank (13), and a layered curing mold; The multi-layer cured fiber composite unit (4), the multi-layer cured fiber injection unit (5), the multi-layer cured fiber curing unit (6), the traction unit (7), and the cutting and winding unit (8) are arranged in a straight line in sequence; On the warp-direction layered curing mold (114) of the warp-direction cured fiber output unit (1), there are a number of warp-direction curing outlet layers (1141) distributed in parallel; On the weft-direction layered curing mold (214) of the weft-direction cured fiber output unit (2), there are a number of weft-direction curing outlet layers (2141) distributed in parallel; In the height direction, the warp-direction curing outlet layer (1141) is in the middle position between two adjacent weft-direction curing outlet layers (2141).

2. The laminated continuous composite fiber pultrusion grid production line according to claim 1, characterized in that: At the outlet position of the warp-direction layered curing mold (114) of the warp-direction cured fiber output unit (1), there is a warp-direction cutting machine.

3. A laminated continuous composite fiber pultrusion grid production line according to claim 1, characterized in that: The multi-layer cured fiber assembly unit (3) includes a guiding device composed of a roller assembly, an aligning device for ensuring the relative perpendicularity of the warp-direction cured fiber and the weft-direction cured fiber, and a dispensing device.

4. A laminated continuous composite fiber pultrusion grid production line according to claim 3, characterized in that: The dispensing device mainly consists of a glue storage tank, a PLC control system, a peristaltic pump, a robotic arm, and a dispensing nozzle; the multi-layer cured fiber composite unit (4) includes multiple groups of hot pressing rollers and multi-stage guiding mechanisms; between the multi-layer cured fiber composite unit (4) and the multi-layer cured fiber injection unit (5), there is also an arrangement and fixing unit (45); the arrangement and fixing unit (45) includes a robotic arm and a heating gel unit.

5. A manufacturing process of a laminated continuous composite fiber pultruded grid, characterized in that: Based on the laminated continuous composite fiber pultrusion grid production line described in any one of claims 1-4, it includes the following steps; A. Divide the two laminated cured fiber output units on the same horizontal plane that can output multiple layers of cured fibers in parallel into a warp-direction cured fiber output unit and a weft-direction cured fiber output unit; wherein the warp-direction cured fiber output unit and the weft-direction cured fiber output unit are vertically distributed along the discharging direction of the cured fiber; so that multiple layers of warp-direction cured fibers output by the warp-direction cured fiber output unit are interspersed between multiple layers of weft-direction cured fibers output by the weft-direction cured fiber output unit; B. At a certain distance, cut off the warp-direction cured fibers inserted into the weft-direction cured fiber layer, and the cut-off warp-direction cured fibers fall on the continuous weft-direction cured fiber layer, and the weft-direction cured fiber layer drives the cut-off warp-direction cured fibers to move forward, ensuring that the cut-off warp-direction cured fibers are relatively perpendicular to the continuous weft-direction cured fibers; C. Bond and cure the relatively vertical truncated meridional cured fibers and continuous zonal cured fibers to form a molded product.

6. The manufacturing process of a laminated continuous composite fiber pultruded grid according to claim 5, characterized in that: Step C further includes the following steps: a) Initially bond the continuously arranged zonal cured fibers and truncated meridional cured fibers that are relatively vertically placed to ensure that when the continuously arranged zonal cured fibers and truncated meridional cured fibers come into contact, there is sufficient resin to bond the two, but not completely fix them, so that the truncated meridional cured fibers have a certain displacement ability compared to the continuously arranged zonal cured fibers, forming an initial fiber grid; b) Conduct primary interlayer lamination on multiple layers of the initial fiber grid, concentrating the original multiple separated monomers into an integral whole that is in contact and connected with each other to form a preliminarily cured fiber grid; Shape the preliminarily cured fiber grid by heating, and eliminate the internal stress of the product for the first time through the angle combination and temperature control of multiple groups of hot pressing rollers; c) Immerse the preliminarily cured fiber grid as a whole in a glue tank so that the resin fully wraps the interlayer joints and the periphery of the joints of the multiple layers of the initial fiber grid layers in the preliminarily cured fiber grid, as well as the joints and the periphery of the joints between the meridional cured fibers and the zonal cured fibers; d) Conduct a heating and baking treatment on the preliminarily cured fiber grid that has been immersed as a whole, causing the resin to be heated and enter the gel state. At this time, the resin will go through a process of becoming thinner from thick, and then becoming thick again; e) The preliminarily cured fiber grid enters a curing oven to completely cure the resin on the preliminarily cured fiber grid, obtaining a cured fiber grid. After curing, cut the continuously arranged multiple layers of zonal cured fibers at corresponding positions to obtain a finished cured fiber grid.

7. The manufacturing process of a laminated continuous composite fiber pultruded grid according to claim 5, characterized in that: In step A, the specific process of the laminated cured fiber output unit outputting multiple layers of cured fibers is as follows: The fibers are led out from a fiber yarn rack, passed through an impregnating tank to infiltrate the resin into the fibers, and the infiltrated fibers respectively enter a laminated curing mold with a heating function through a fiber splitting mechanism. When the fibers with resin pass through the laminated curing mold, the resin undergoes a curing reaction, and under the action of a traction device, the cured product is pulled out of the mold to form cured fibers with each layer being relatively parallel.

8. The manufacturing process of a laminated continuous composite fiber pultruded grid according to claim 6, characterized in that: In step d, it also includes treating and collecting the resin overflowing from the preliminarily cured fiber grid.

9. The manufacturing process of a laminated continuous composite fiber pultruded grid according to claim 6, characterized in that: In step e, before the preliminarily cured fiber grid enters the curing oven, it also includes filling the resin at fixed points in cooperation with a manipulator for the preliminarily cured fiber grid to ensure the resin filling between the fiber layers in the longitude direction and the fiber layers in the latitude direction within the preliminarily cured fiber grid.

10. The manufacturing process of a laminated continuous composite fiber pultruded grid according to claim 5, characterized in that: The meridional cured fiber output unit can output the first meridional cured fiber layer, the second meridional cured fiber layer, and the third meridional cured fiber layer in parallel; The zonal cured fiber output unit can output the first zonal cured fiber layer and the second zonal cured fiber layer in parallel; A first zonal cured fiber layer is provided between the first meridional cured fiber layer and the second meridional cured fiber layer; a second zonal cured fiber layer is provided between the second meridional cured fiber layer and the third meridional cured fiber layer.

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