阅读说明：本技术 一种层叠连续复合纤维拉挤网格的制造工艺及生产线 (Manufacturing process and production line for laminated continuous composite fiber pultrusion grids ) 是由 程正珲 程逸建 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种层叠连续复合纤维拉挤网格的制造工艺,解决现有先编织后固化的生产工艺,会导致纤维与树脂结合率无法保证、制品纤维体积无法固定,导致制品性能离散性较大等问题,发明创造性使用可平行输出多层固化纤维的层叠固化纤维输出单元,利用层叠固化纤维输出单元可同时输出多层固化纤维,采用沿固化纤维出料方向垂直分布的经向固化纤维输出单元和纬向固化纤维输出单元,在经向固化纤维输出单元输出的经向固化纤维插入纬向固化纤维输出单元输出的纬向固化纤维后,按一定距离,截断插入纬向固化纤维层内的经向固化纤维,进行初始粘接后,即可形成初始纤维网格。(The invention discloses a manufacturing process of laminated continuous composite fiber pultrusion grids, which solves the problems that the bonding rate of fiber and resin can not be ensured, the fiber volume of a product can not be fixed, the product performance discreteness is larger and the like in the existing production process of weaving and curing firstly, inventively uses a laminated curing fiber output unit capable of outputting multi-layer curing fibers in parallel, can simultaneously output multi-layer curing fibers by using the laminated curing fiber output unit, adopts a warp-direction curing fiber output unit and a weft-direction curing fiber output unit which are vertically distributed along the discharging direction of the curing fibers, after the warp-wise cured fibers output by the warp-wise cured fiber output unit are inserted into the weft-wise cured fibers output by the weft-wise cured fiber output unit, and cutting off the warp-wise cured fibers inserted into the weft-wise cured fiber layers according to a certain distance, and performing initial bonding to form an initial fiber grid.)

1. A manufacturing process of laminated continuous composite fiber pultrusion grids is characterized in that: comprises the following steps;

A. dividing two laminated curing fiber output units which are positioned on the same horizontal plane and can output a plurality of layers of curing fibers in parallel into a warp-direction curing fiber output unit and a weft-direction curing fiber output unit; the warp-wise cured fiber output unit and the weft-wise cured fiber output unit are vertically distributed along the cured fiber discharging direction; a plurality of layers of warp-direction curing fibers output by the warp-direction curing fiber output unit are interpenetrated among the plurality of layers of weft-direction curing fibers output by the weft-direction curing fiber output unit;

B. according to the certain distance, cut and insert warp direction curing fiber in the latitudinal direction curing fiber layer, the warp direction curing fiber who cuts falls on continuous latitudinal direction curing fiber layer, and latitudinal direction curing fiber layer drives the warp direction curing fiber who cuts moves forward ensures that the warp direction curing fiber who cuts is perpendicular relatively with continuous latitudinal direction curing fiber.

C. And (3) bonding, curing and molding the relatively vertical truncated warp-direction curing fibers and the continuous weft-direction curing fibers.

2. A process for the manufacture of a laminated continuous composite fibre pultruded mesh according to claim 1, wherein: the step C also comprises the following steps:

a) the method comprises the following steps of initially bonding continuous weft-direction curing fibers and cut warp-direction curing fibers which are vertically arranged relatively to each other, so that when the continuous weft-direction curing fibers and the cut warp-direction curing fibers are in contact, sufficient resin can be bonded with the continuous weft-direction curing fibers and the cut warp-direction curing fibers, but the continuous weft-direction curing fibers and the cut warp-direction curing fibers are not completely fixed, and the cut warp-direction curing fibers have certain displacement capacity compared with the continuous weft-direction curing fibers to form;

b) carrying out interlayer primary compounding on multiple layers of initial fiber grids, and concentrating the original multiple layers of separated monomers into a whole which is in contact and connected with each other to form a primary cured fiber grid; shaping the primary cured fiber grids in a heating mode, and performing primary internal stress elimination on the product through angle combination and temperature control of a plurality of groups of hot press rollers;

c) integrally soaking the primary cured fiber grids in a glue groove, and fully wrapping resin on the joints and the peripheries of the joints between the multiple layers of the primary fiber grids and the joints of the warp-direction cured fibers and the weft-direction cured fibers and the peripheries of the joints in the primary cured fiber grids;

d) heating and baking the initially cured fiber mesh subjected to integral infiltration to heat the resin to enter a gel state, wherein the resin undergoes a process of thickening from thickening to thinning and then thickening;

e) and (3) feeding the primary cured fiber grids into a curing oven to completely cure the resin on the primary cured fiber grids to obtain cured fiber grids, and cutting the continuous weft-wise multi-layer cured fibers at corresponding positions after curing to obtain finished cured fiber grids.

3. A process for the manufacture of a laminated continuous composite fibre pultruded mesh according to claim 1, wherein: in the step a, the forming process of the laminated cured fiber output unit outputting the multilayer cured fiber specifically includes: and leading out fibers from a fiber creel, carrying out resin infiltration on the fibers in an infiltration groove, respectively and correspondingly entering the infiltrated fibers into a laminated curing mold with a heating function through a fiber yarn dividing mechanism, carrying out a curing reaction on the resin when the fibers with the resin pass through the laminated curing mold, and drawing the cured product out of the mold under the action of a drawing device to form cured fibers of each layer which are relatively parallel.

4. A process for the manufacture of a laminated continuous composite fibre pultruded mesh according to claim 2, wherein: and d, treating and collecting the resin overflowing from the primary cured fiber mesh.

5. A process for the manufacture of a laminated continuous composite fibre pultruded mesh according to claim 2, wherein: and e, before the primary cured fiber grids enter the curing oven, performing fixed-point resin filling on the primary cured fiber grids by matching with a manipulator to ensure that the resin filling between the longitudinal fiber layers and the latitudinal fiber layers in the primary cured fiber grids is ensured.

6. A process for the manufacture of a laminated continuous composite fibre pultruded mesh according to claim 1, wherein: the warp-cured fiber output unit may output the first warp-cured fiber layer, the second warp-cured fiber layer, and the third warp-cured fiber layer in parallel;

the weft-wise cured fiber output unit can output the first weft-wise cured fiber layer and the second weft-wise cured fiber layer in parallel;

a first weft-direction cured fiber layer is arranged between the first warp-direction cured fiber layer and the second warp-direction cured fiber layer; and a second weft-wise cured fiber layer is arranged between the second warp-wise cured fiber layer and the third warp-wise cured fiber layer.

7. The utility model provides a two-way pultrusion grid production line of continuous composite fiber of range upon range of which characterized in that: the device comprises a warp-wise cured composite fiber output unit (1), a weft-wise cured composite fiber output unit (2), a multilayer cured composite fiber integrated unit (3), a multilayer cured composite fiber composite unit (4), a multilayer cured composite fiber injection unit (5), a multilayer cured composite fiber curing unit (6), a traction unit (7) and a cutting and winding unit (8);

the warp-wise cured composite fiber output unit (1) and the weft-wise cured composite fiber output unit (2) are vertically distributed along the discharging direction of the cured composite fibers; the warp-wise cured composite fiber output unit and the weft-wise cured composite fiber output unit are both formed by multilayer cured composite fiber output units;

the multi-layer solidified composite fiber output unit comprises a creel (11), a tension roller (12), a soaking groove (13) and a layered solidification mold (14);

the multi-layer cured composite fiber composite unit (4), the multi-layer cured composite fiber injection unit (5), the multi-layer cured composite fiber composite curing unit (6), the traction unit (7) and the cutting and winding unit (8) are sequentially arranged along a straight line;

a plurality of warp-wise cured outlet layers (1141) which are distributed in parallel are arranged on a warp-wise layered curing mould (114) of the warp-wise cured fiber output unit (1);

a plurality of weft-wise curing outlet layers (2141) which are distributed in parallel are arranged on a weft-wise layered curing mold (214) of the weft-wise curing composite fiber output unit (2);

in the height direction, the warp direction solidified outlet layer (1141) is positioned in the middle position of two adjacent weft direction solidified outlet layers (2141).

8. The laminated continuous composite fiber pultrusion grid production line as claimed in claim 1, wherein: and a warp cutting machine (101) is arranged at the outlet position of the layered curing mould (114) of the warp curing composite fiber output unit (1).

9. The laminated continuous composite fiber pultrusion grid production line as claimed in claim 1, wherein: the multilayer cured composite fiber integrally-assembling unit (3) comprises a guiding device formed by a roller assembly, a straightening device matched with the aligning device for ensuring that the warp-direction cured composite fibers and the weft-direction cured composite fibers are relatively vertical, and a glue dispensing device.

10. The laminated continuous composite fiber pultrusion grid production line as claimed in claim 1, wherein: the glue dispensing device mainly comprises a glue storage tank, a PLC control system, a peristaltic pump, a mechanical arm and a spitting nozzle. The multilayer curing composite fiber unit (4) comprises a plurality of groups of hot-pressing rollers and a multistage guide mechanism; a finishing and fixing unit (45) is also arranged between the multilayer curing composite fiber unit (4) and the multilayer curing fiber injection unit (5); the tidying and fixing unit (45) includes a robot arm (451) and a heating gel unit (452).

Technical Field

The invention relates to the field of fiber pultrusion grids, in particular to a manufacturing process and a production line for laminated continuous composite fiber pultrusion grids.

Background

The pultrusion process grid is based on a pultrusion process and has all the performance characteristics of the traditional pultrusion product. And simultaneously, the fibers in the warp and weft directions are greatly enhanced, so that the product has excellent performance in the aspect of stress.

If the application number is: the application name of CN201410285340.3 is: a high-strength continuous composite material fiber grid, a production method and a production line; if the application number is as follows: CN201911296602.5, application name: an integrated carbon fiber composite material grid structure and a manufacturing method thereof and other related patent applications disclose a manufacturing method of the existing grid, wherein the grid is woven and then cured.

However, the production process of weaving and curing firstly can cause the problems that the bonding rate of the fiber and the resin can not be ensured, the fiber volume of the product can not be fixed, the performance discreteness of the product is larger, and the like.

If the fiber is cured firstly, the problem that the fiber cannot be woven exists, and the cured fiber bundle is not as soft as the uncured fiber, so that the fiber bundle cannot be woven by a machine, automatic production cannot be completed by the machine, and only manual placement can be realized, so that the labor intensity of workers is high, and the production rate is low.

Meanwhile, the manual production inevitably has the defects of raw material waste, large labor consumption, large environmental odor and the like in the production process.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the invention aims to solve the defects in the prior art, and provides a manufacturing process of pultrusion grids, which can realize the solidification and then weaving of fibers, realize the automatic production of pultrusion grids and achieve high production efficiency and stable quality.

The technical scheme of the invention is as follows: the invention relates to a manufacturing process for laminated continuous composite fiber pultrusion grids, which comprises the following steps of;

A. dividing two laminated curing fiber output units which are positioned on the same horizontal plane and can output a plurality of layers of curing fibers in parallel into a warp-direction curing fiber output unit and a weft-direction curing fiber output unit; the warp-wise cured fiber output unit and the weft-wise cured fiber output unit are vertically distributed along the cured fiber discharging direction; a plurality of layers of warp-direction curing fibers output by the warp-direction curing fiber output unit are interpenetrated among the plurality of layers of weft-direction curing fibers output by the weft-direction curing fiber output unit;

B. according to the certain distance, cut and insert warp direction curing fiber in the latitudinal direction curing fiber layer, the warp direction curing fiber who cuts falls on continuous latitudinal direction curing fiber layer, and latitudinal direction curing fiber layer drives the warp direction curing fiber who cuts moves forward ensures that the warp direction curing fiber who cuts is perpendicular relatively with continuous latitudinal direction curing fiber.

C. And (3) bonding, curing and molding the relatively vertical truncated warp-direction curing fibers and the continuous weft-direction curing fibers.

Further, the step C further includes the steps of:

a) the method comprises the following steps of initially bonding continuous weft-direction curing fibers and cut warp-direction curing fibers which are vertically arranged relatively to each other, so that when the continuous weft-direction curing fibers and the cut warp-direction curing fibers are in contact, sufficient resin can be bonded with the continuous weft-direction curing fibers and the cut warp-direction curing fibers, but the continuous weft-direction curing fibers and the cut warp-direction curing fibers are not completely fixed, and the cut warp-direction curing fibers have certain displacement capacity compared with the continuous weft-direction curing fibers to form;

b) carrying out interlayer primary compounding on multiple layers of initial fiber grids, and concentrating the original multiple layers of separated monomers into a whole which is in contact and connected with each other to form a primary cured fiber grid; shaping the primary cured fiber grids in a heating mode, and performing primary internal stress elimination on the product through angle combination and temperature control of a plurality of groups of hot press rollers;

c) integrally soaking the primary cured fiber grids in a glue groove, and fully wrapping resin on the joints and the peripheries of the joints between the multiple layers of the primary fiber grids and the joints of the warp-direction cured fibers and the weft-direction cured fibers and the peripheries of the joints in the primary cured fiber grids;

d) heating and baking the initially cured fiber mesh subjected to integral infiltration to heat the resin to enter a gel state, wherein the resin undergoes a process of thickening from thickening to thinning and then thickening;

e) and (3) feeding the primary cured fiber grids into a curing oven to completely cure the resin on the primary cured fiber grids to obtain cured fiber grids, and cutting the continuous weft-wise multi-layer cured fibers at corresponding positions after curing to obtain finished cured fiber grids.

Further, in the step a, the forming process of outputting the multiple layers of the cured fibers by the stacked cured fiber output unit specifically includes: and leading out fibers from a fiber creel, carrying out resin infiltration on the fibers in an infiltration groove, respectively and correspondingly entering the infiltrated fibers into a laminated curing mold with a heating function through a fiber yarn dividing mechanism, carrying out a curing reaction on the resin when the fibers with the resin pass through the laminated curing mold, and drawing the cured product out of the mold under the action of a drawing device to form cured fibers of each layer which are relatively parallel.

Further, in the step d, the resin overflowing from the primary cured fiber mesh is treated and collected.

Further, in the step e, before the primary cured fiber mesh enters the curing oven, the step of performing fixed-point resin filling on the primary cured fiber mesh by matching with a manipulator to ensure that the resin filling between the longitudinal fiber layer and the latitudinal fiber layer is performed in the primary cured fiber mesh.

Further, the warp-cured fiber output unit may output the first warp-cured fiber layer, the second warp-cured fiber layer, and the third warp-cured fiber layer in parallel;

the weft-wise cured fiber output unit can output the first weft-wise cured fiber layer and the second weft-wise cured fiber layer in parallel;

a first weft-direction cured fiber layer is arranged between the first warp-direction cured fiber layer and the second warp-direction cured fiber layer; and a second weft-wise cured fiber layer is arranged between the second warp-wise cured fiber layer and the third warp-wise cured fiber layer.

The production line comprises a warp-direction cured composite fiber output unit, a weft-direction cured composite fiber output unit, a multi-layer cured composite fiber integrated unit, a multi-layer cured composite fiber composite unit, a multi-layer cured composite fiber injection unit, a multi-layer cured composite fiber curing unit, a traction unit and a cutting and winding unit;

the warp-wise cured composite fiber output unit and the weft-wise cured composite fiber output unit are vertically distributed along the discharging direction of the cured composite fibers; the warp-wise cured composite fiber output unit and the weft-wise cured composite fiber output unit are both formed by multilayer cured composite fiber output units;

the multilayer solidified composite fiber output unit comprises a creel, a tension roller, a soaking groove and a layered solidification mold;

the multilayer curing composite fiber composite unit, the multilayer curing composite fiber injection unit, the multilayer curing fiber composite curing unit, the traction unit and the cutting and winding unit are sequentially arranged along a straight line;

a plurality of warp-direction curing outlet layers which are distributed in parallel are arranged on the warp-direction layered curing mould of the warp-direction curing fiber output unit;

a plurality of weft-wise curing outlet layers which are distributed in parallel are arranged on a weft-wise layered curing mold of the weft-wise curing composite fiber output unit;

in the height direction, the warp-wise cured outlet layer is positioned in the middle of two adjacent weft-wise cured outlet layers.

Furthermore, a warp cutting machine is arranged at the outlet of the layered curing mould of the warp curing composite fiber output unit.

Furthermore, the multilayer cured composite fiber integrally-assembling unit comprises a guiding device formed by a roller assembly, a straightening device matched with the roller assembly and used for ensuring that the warp-direction cured composite fibers and the weft-direction cured composite fibers are relatively vertical, and a glue dispensing device.

Furthermore, the glue dispensing device mainly comprises a glue storage tank, a PLC control system, a peristaltic pump, a mechanical arm and a spitting nozzle. The multi-layer curing composite fiber unit comprises a plurality of groups of hot-pressing rollers and a multi-stage guide mechanism; a finishing and fixing unit is also arranged between the multilayer curing composite fiber unit and the multilayer curing fiber injection unit; the arrangement fixing unit comprises a mechanical arm and a heating gel unit.

Compared with the prior art, the invention has the beneficial effects that:

compared with the prior art, the laminated curing fiber output unit capable of outputting the plurality of layers of curing fibers in parallel is creatively used, the laminated curing fiber output unit can be used for outputting the plurality of layers of curing fibers simultaneously, the warp-direction curing fiber output unit and the weft-direction curing fiber output unit which are vertically distributed along the discharging direction of the curing fibers are adopted, after the warp-direction curing fibers output by the warp-direction curing fiber output unit are inserted into the weft-direction curing fibers output by the weft-direction curing fiber output unit, the warp-direction curing fibers inserted into the weft-direction curing fiber layer are cut off at a certain distance, and after initial bonding is carried out, an initial fiber grid can be formed, so that series problems caused by the existing production process of weaving first and then curing are.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic production flow diagram of a weft-direction consolidated fiber of the present invention;

FIG. 3 is a schematic high-level view of a warp cure exit layer and a warp cure exit layer in accordance with the present invention;

FIG. 4 is a schematic structural view of a fabricated pultruded mesh according to the present invention.

Detailed Description

For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, the manufacturing equipment for the manufacturing process of the laminated continuous composite fiber pultrusion grid of the invention comprises a warp-wise cured fiber output unit 1, a weft-wise cured fiber output unit 2, a multi-layer cured fiber packaging 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 multilayer solidified fiber composite unit 4, the multilayer solidified fiber injection unit 5, the multilayer solidified fiber solidifying unit 6, the traction unit 7 and the cutting and winding unit 8 are sequentially arranged along a straight line;

the warp-wise cured fiber output unit 1 and the weft-wise cured fiber output unit 2 are vertically distributed along the cured fiber discharging direction; the warp-wise cured fiber output unit and the weft-wise cured fiber output unit are both formed by a plurality of layers of cured fiber output units;

the multi-layer solidified fiber output unit comprises a fiber creel 11, a tension roller 12, a soaking groove 13 and a layered solidified die 14;

as shown in fig. 3, a plurality of warp-wise cured outlet layers 1141 distributed in parallel are arranged on the warp-wise layered curing mold 114 of the warp-wise cured fiber output unit 1;

a plurality of weft-wise solidification outlet layers 2141 which are distributed in parallel are arranged on the weft-wise layered solidification mold 214 of the weft-wise solidification fiber output unit 2;

in the height direction, the warp-wise cured outlet layer 1141 is located in the middle of the two adjacent weft-wise cured outlet layers 2141, so that the plurality of layers of warp-wise cured fibers 10 output by the warp-wise cured fiber output unit 1 can be directly inserted between the plurality of layers of weft-wise cured fibers 20 output by the weft-wise cured fiber output unit 2, and preliminary crossing of the warp fibers and the weft fibers is completed.

The outlet position of the layering curing mould 114 of the warp-direction cured fiber output unit 1 is provided with a warp-direction cutter 101.

The multilayer cured fiber integrally-assembling unit 3 comprises a guiding device consisting of roller assemblies, a straightening device and a gluing device which are matched to ensure that the warp-wise cured fibers and the weft-wise cured fibers are relatively vertical. The glue dispensing device mainly comprises a glue storage tank, a PLC control system, a peristaltic pump, a mechanical arm and a spitting nozzle.

The multi-layer solidified fiber composite unit 4 comprises a plurality of groups of hot-pressing rollers and a multi-stage guide mechanism.

The finishing fixing unit 45 includes a robot arm 451 and a heated gel unit 452.

The specific operation method of the invention is as follows:

firstly, leading out fibers from a fiber creel 11, carrying out resin infiltration on the fibers through an infiltration trough 13, and enabling the infiltrated fibers to correspondingly enter a layered curing mould 14 through a fiber yarn dividing mechanism respectively. The layered curing mold 14 has a heating function, and a curing reaction of the resin occurs when the fiber with the resin passes through the layered curing mold 14. The cured article is drawn out of the layered curing mold 14 by the drawing apparatus to form a latitudinal material. Meanwhile, the warp direction curing fiber output unit 1 outputs warp direction curing fibers in the same way in the longitudinal direction;

cutting off the warp-direction curing fibers inserted into the weft-direction curing fiber layer from the warp-direction curing outlet layer 1141 by a cutting mechanism according to a certain distance; the weft layered curing mold 214 of the weft cured fiber output unit 2 is provided with a plurality of weft cured outlet layers 2141 distributed in parallel, and the placing mode can firstly ensure the accuracy of products in the latitude direction on the vertical plane, and secondly can generate a large enough gap between layers, so that the longitudinal tool and the products can conveniently enter.

And thirdly, after leaving the traction clamping, the longitudinal product enters a multilayer solidified fiber self-assembly unit 3 to form an initial fiber grid. The multilayer cured fiber package unit 3 includes the following steps:

1. and the guide mechanism guides the cut warp-wise cured fibers to ensure that the warp-wise cured fibers are relatively vertical to the continuous weft-wise fibers. The guide mechanism is composed of a plurality of groups of roller groups. Firstly, a plurality of groups of roller groups form a channel in a certain range, and the accuracy of the longitude direction is ensured. And secondly, a plurality of groups of rollers are driven by servo motors, so that the longitudinal products can travel according to a specific path, and blockage and deviation are avoided.

And 2, placing the cut warp-wise cured fibers by the placing mechanism through the placing mechanism, so that the warp-wise cured fibers are linked with the continuous weft-wise fibers at a speed, and the continuous weft-wise cured fibers advance at a certain speed, and are placed at regular time and quantity through PLC calculation under the condition of ensuring that the distance between the warp-wise cured fibers is certain.

The placing mechanism and the guide mechanism are combined mechanisms, and after the warp-wise cured fibers are guided to the designated positions by the guide mechanism, the placing mechanism performs fixed-point loose grabbing placement on the warp-wise cured fibers according to PLC signals.

3. Glue is sprayed to the connection points of the cut warp-wise curing fibers and the continuous warp-wise curing fibers through a glue dispensing device, and the glue dispensing device mainly comprises a glue storage tank, a PLC (programmable logic controller), a peristaltic pump, a mechanical arm and a glue dispensing nozzle. And after the PLC receives the dispensing signal, the PLC controls the mechanical arm to operate, and the dispensing nozzle connected with the mechanical arm is transported to a specified position. At the moment, the peristaltic pump starts to work, resin is pumped out of the glue storage tank, glue is discharged from the glue dispensing nozzle through the pipeline, the output of the peristaltic pump is controlled by the PLC controller, and precision control is achieved.

The chopped warp-cured fibers and continuous warp-cured fibers require bond control when in contact. The glue dispensing lead, the resin dosage, the glue dispensing position and the like are comprehensively calculated and judged by the PLC to the feedback information of sensors such as the speed of comprehensive equipment, the weft position, the warp position, the ambient temperature, the ambient humidity and the like, so that when the truncated warp-wise curing fibers are contacted with the continuous warp-wise curing fibers, sufficient resin can be used for bonding the fibers, but the fibers cannot be completely bonded, a warp and weft product must have certain displacement change capability, and the bonding resin and later-stage filling resin cannot have secondary curing reaction, so that the product has weak points and is stripped. At the moment, the resin is in a heat activated state and still has certain fluidity, but the resin does not start high-speed reaction and is solidified.

And fourthly, after leaving the multilayer cured fiber integrated unit 3, the initial fiber grid enters the multilayer cured fiber composite unit 4 to form an initial cured fiber grid.

The multi-layer solidified fiber composite unit 4 mainly comprises a plurality of groups of hot-pressing rollers and a multi-stage guide mechanism. The main functional features of this unit are:

1. the multi-layer longitude and latitude product composed of broken warp-wise cured fibers and continuous warp-wise cured fibers is primarily compounded through a plurality of groups of hot-pressing rollers, and the original multi-layer separated monomers are integrated into a whole which is contacted and connected with each other to form a primary cured fiber grid.

2. And shaping the multilayer longitude and latitude combined product in a heating mode.

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

4. The multi-stage guide mechanism starts to play a role when the initial fiber grids pass through the plurality of groups of hot pressing rollers, and the appearance of the product is progressively arranged in the advancing process of the initial fiber grids.

The incremental sorting is that the products are sorted and restricted by a multistage incremental precision guide controller, so that the size error of the products is standardized. The vertical alignment of the cut warp-cured fibers is mainly and specifically controlled. The error of the outermost straight line direction of the final product is ensured to be less than 2mm, and the error of vertical putting down is ensured to be less than 1 mm.

Fifthly, the initial fiber grids enter the finishing and fixing unit 45 after the initial fiber grids are formed by the multi-layer solidified fiber composite unit 4. The main functional characteristics of the unit are as follows:

1. and (4) finishing the relative verticality and spacing of the primary cured fiber grids. The multiple layers of the primary cured fiber grids can be fixed simultaneously by a plurality of groups of mechanical arms and run synchronously with the traction direction. Ensuring the stability of the formal structure of the primary cured fiber mesh during the running process.

2. And heating and shaping the primary cured fiber mesh by combining with the actual environment temperature. Ensuring that the relative displacement and deformation of the multi-layer longitude and latitude combined product in the subsequent process are less than 1 mm. At the same time, the previous adhesive resin was heated again to bring the resin into a reaction state, and slow gelation began to occur. At the moment, the resin has larger viscosity, the fluidity is reduced, but the resin is not cured, so that the problem of product performance caused by secondary curing in the later period is avoided.

Sixthly, the primary cured fiber grids leave the finishing and fixing unit 45 and then enter the multilayer cured fiber injection unit 5 to form re-impregnated fiber grids. The main functional characteristics of the unit are as follows:

1. and carrying out primary soaking type integral soaking on the primary cured fiber grids. And in the primary cured fiber grid, resin is infiltrated into contact gaps of the truncated warp-direction cured fibers and the continuous warp-direction cured fibers between layers, so that the contact parts of the warp-direction cured fibers and the warp-direction cured fibers are fully filled and wrapped by the resin.

2. The primary curing fiber mesh filled with the resin is heated and baked, so that the resin is heated in a large amount, the resin starts to react at a high speed and quickly enters a gel state, the resin can undergo the process of thickening and thinning, and a large amount of redundant resin can overflow from the multi-layer longitude and latitude combined product in the changing process.

3. And (4) treating and collecting the resin overflowing from the primary cured fiber grids.

4. And spraying and filling a gap between the warp-wise curing fiber and the continuous warp-wise curing fiber in the primary curing fiber grid by using a fixed-point spray gun. And repeating the processes 2, 3 and 4 twice after the spraying is finished.

5. By utilizing a photographic contrast technology, the product is contrasted in various aspects, such as: grid spacing, stacking error, number of droplets, number of cavities, etc. And finally performing fixed-point resin filling on the primary cured fiber grids by utilizing feedback information and matching with a manipulator, so as to ensure the resin filling rate between product layers and form re-impregnated fiber grids.

And seventhly, the impregnated fiber grids enter a multi-layer cured fiber curing unit 6, and the product resin is completely cured to obtain cured fiber grids 9.

The multilayer cured fiber package unit 3 can be installed in a multilayer distribution manner in the gaps among the layers of the continuous warp cured fibers according to the actual needs of products. The multilayer curing fiber self-contained unit 3 can be installed in a distributed mode according to actual conditions such as length and product gaps, and the multilayer synchronous work is achieved through feedback data of the sensors and calculation of a PLC. The multilayer solidified fiber self-contained unit 3 is formed by combining a plurality of groups of functional components, and the product requires that longitudinal fibers are required to be contained between every two layers of latitudes, so that a plurality of groups of equipment cannot be installed in the same plane. At this time, a multi-layer distribution installation method is needed, namely, a guide mechanism, a placing mechanism and a glue dispensing mechanism are arranged on each layer corresponding to the height of the latitudinal solidification outlet layer 2141, so that the problem is solved.

The invention is a new pultrusion grid manufacturing process which is based on a pultrusion process and generates multidirectional, multilayer and linkage by carrying out unidirectional pultrusion in the traditional pultrusion process. The method has the characteristics of capability of realizing solidification and weaving of the fiber, realization of automatic production of pultrusion grids, high production efficiency and stable quality. The invention creatively uses a laminated curing fiber output unit which can output a plurality of layers of curing fibers in parallel, the laminated curing fiber output unit can simultaneously output a plurality of layers of curing fibers, a warp-direction curing fiber output unit and a weft-direction curing fiber output unit which are vertically distributed along the discharging direction of the curing fibers are adopted, after the warp-direction curing fibers output by the warp-direction curing fiber output unit are inserted into the weft-direction curing fibers output by the weft-direction curing fiber output unit, the warp-direction curing fibers inserted into the weft-direction curing fiber layer are cut off at a certain distance, and after initial bonding, an initial fiber grid can be formed.

Secondly, the invention solves the technical problem that the fiber is solidified and then woven, so that the raw material can be adjusted on line according to the actual environment condition. Realize fixed-point and quantitative glue injection. The real-time change and allocation which can not be carried out by manual mode can be realized, and resin waste can not be caused. The advantage is more obvious especially when the temperature difference between day and night environment is larger. Because the proportion of the resin and the curing agent is constant at the ambient temperature and the ambient humidity, the resin and the curing agent can be quantitatively proportioned according to the actual required time, and when the ambient temperature rises, the addition amounts of the curing agent and the accelerator added into the resin need to be reduced in a proper amount, so that the resin is prevented from reacting too fast, and the resin is prevented from being cured in advance. The mechanical glue preparation has the advantages that the glue is prepared on line according to the needs, the amount of the glue is used, and the resin premix with a fixed formula does not exist. The formula of the mechanical glue preparation can be adjusted in real time according to the environmental temperature and humidity, so that the reaction time of the resin is effectively controlled, and the uniformity of the product performance is ensured.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is also intended to be covered by the appended claims. The scope of the invention is defined by the claims and their equivalents.