CN112590262A

CN112590262A - Pultrusion system for producing fiber reinforced polymer rods

Info

Publication number: CN112590262A
Application number: CN202011497494.0A
Authority: CN
Inventors: 高丹盈; 张雨; 房栋; 温方正; 庞育阳; 汤寄予
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-04-02

Abstract

The invention belongs to the technical field of composite material processing, and particularly relates to a pultrusion system for preparing a fiber reinforced polymer rod, which comprises a yarn group placing frame, a gum dipping device, a preforming device, a secondary forming and winding device, a traction device and a high-temperature treatment device which are sequentially connected, wherein the high-temperature treatment device comprises a matrix resin heating device, a front preheating device, a rear preheating device, a high-temperature gel device, a high-temperature curing and forming device and a cooling device; the invention has simple structure and convenient operation, can change the fluidity of the resin among the fibers for a plurality of times, redistribute the resin among the fibers for a plurality of times, greatly increase the wettability of the resin on the surface of the fibers and the uniform distribution among the fibers, thereby ensuring the full play of the mechanical performance of the FRP rod and greatly reducing the discreteness of the mechanical performance of the FRP rod.

Description

Pultrusion system for producing fiber reinforced polymer rods

Technical Field

The invention belongs to the technical field of composite material processing, and particularly relates to a pultrusion system for preparing a fiber reinforced polymer rod.

Background

The normal service state of the structure or the component is seriously influenced by the corrosion of the steel bars, the steel anchor rods and the steel strands in the service environment, and huge manpower and financial resources are consumed for maintaining and repairing the structure or the component with degraded performance in the later period; meanwhile, in the face of increasingly exhausted natural resources, a new material is urgently needed to replace reinforcing steel bars, steel anchor rods and steel strands to solve the problems of the existing structures or members.

The Fiber Reinforced Polymer (FRP) rod (bar/anchor rod/stranded wire) has the essential characteristics of high specific strength, high specific stiffness, corrosion resistance, non-magnetization, fatigue resistance, strong designability and the like, and obviously becomes an ideal replaceable material for reinforcing steel bars, steel anchor rods and steel stranded wires. The FRP rod is a novel material formed by continuous fiber reinforced matrix resin serving as a reinforcing phase through preparation processes such as pultrusion and high-temperature curing.

After high temperature treatment, the cured matrix resin bonds tens of thousands of fiber filaments together to form FRP rods, and their mechanical properties are affected not only by the properties of the component materials themselves, but also by the high temperature treatment process of the preformed FRP rods. However, the high-temperature treatment link of the existing production equipment for FRP rods in the process of preparing the FRP rods is too simple, so that the mechanical properties of the FRP rods are reduced and the FRP rods are greatly discrete due to a series of adverse factors such as uneven distribution of resin among fibers, inconsistent heating of the preformed FRP rods in the high-temperature maintenance process, excessive curing or insufficient curing degree of the resin, microcracks caused by sudden drop of the ambient temperature of the high-temperature FRP rods after the high-temperature FRP rods are driven out of the high-temperature area and shrinkage of the cured resin.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a pultrusion system for preparing a fiber reinforced polymer rod, which has the advantages of simple structure, reasonable design and convenient operation, can change the fluidity of resin among fibers for many times, realizes the repeated redistribution of the resin in the rod material, ensures the full play of the mechanical property of the FRP rod, and greatly reduces the discreteness of the mechanical property of the FRP rod.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a pultrusion system for preparing a fiber reinforced polymer rod, which comprises a yarn ball placing frame, a gum dipping device, a preforming device, a secondary forming and winding device, a traction device and a high-temperature treatment device which are sequentially connected, wherein the high-temperature treatment device comprises a matrix resin heating device, a front preheating device, a rear preheating device, a high-temperature gelling device, a high-temperature curing and forming device and a cooling device;

the matrix resin heating device is arranged right below the gum dipping device and is used for heating the matrix resin;

the inlet of the pre-preheating device is connected with the preforming device through a glue scraping device, and the outlet of the pre-preheating device is connected with the secondary forming and winding device through a glue scraping device and is used for performing pre-heating treatment on the fiber reinforced polymer rod extruded and formed by the preforming device;

the inlet of the post-preheating device is connected with the secondary forming and winding device through a glue scraping device, and the outlet of the post-preheating device is connected with the high-temperature gel device through a glue scraping device and is used for preheating the fiber reinforced polymer rod which is subjected to secondary extrusion forming and rib winding;

the inlet of the high-temperature gel device is connected with the post-preheating device through the glue scraping device, and the outlet of the high-temperature gel device is connected with the high-temperature curing and forming device through the glue scraping device and used for carrying out gel reaction on the ribbed fiber reinforced polymer rod treated by the post-preheating device, so that the resin is changed into a rubber state from a liquid state;

the inlet of the high-temperature curing forming device is connected with the high-temperature gel device through the glue scraping device, and the outlet of the high-temperature curing forming device is connected with the cooling device through the glue scraping device and is used for carrying out high-temperature treatment on the preformed fiber reinforced polymer rod subjected to the gel reaction, so that the resin is subjected to the curing reaction and is changed from a rubber state to a solid state;

and a cooling device for passing the fiber reinforced polymer rod completely solidified in a high temperature state through a temperature gradient lower than the set temperature of the high temperature solidification forming device and higher than the ambient temperature.

Furthermore, the impregnation device comprises an impregnation chamber, a first yarn collecting plate is arranged at an inlet of the impregnation chamber, a second yarn collecting plate is arranged at an outlet of the impregnation chamber, and array round holes with consistent number and positions are formed in the first yarn collecting plate and the second yarn collecting plate; the bottom of the gum dipping chamber is provided with a gum dipping pool, and a pressure lever rotating shaft is arranged in the gum dipping pool.

Further, the matrix resin heating device comprises a high-temperature chamber, the heating device is arranged at the lower part of the high-temperature chamber, and air inlet holes are formed in the periphery of the high-temperature chamber.

Further, the front preheating device, the rear preheating device, the high-temperature gel device, the high-temperature curing and forming device and the cooling device are the same in structure and respectively comprise a high-temperature chamber and a pipeline chamber located below the high-temperature chamber, a display screen is arranged on the front face of the high-temperature chamber, a plurality of heating devices are arranged at the top of the high-temperature chamber, and a waste glue collecting container is placed at the bottom of the high-temperature chamber.

Further, the heating device comprises a heat dissipation fan and a heater, the heater is used for providing heat for the high-temperature chamber, and the heat dissipation fan is used for uniformly diffusing the heat generated by the heater into the high-temperature chamber.

Furthermore, a normal temperature observation port is additionally arranged on the post-preheating device and the high-temperature gel device.

Further, the frictioning device includes the block, scrapes film and connecting piece, the block includes drill way, fixing bolt and frictioning piece fixed slot, scrape the film and place in the frictioning piece fixed slot, fixing bolt fixes the block on the connecting piece, the tip of connecting piece will scrape the film top in the frictioning piece fixed slot.

Furthermore, two annular clamping grooves are formed in the outer portion of the connecting piece, the spring clamps are locked in the clamping grooves, and the two spring clamps are clamped inside the two adjacent devices and used for connecting the two adjacent devices.

Compared with the prior art, the invention has the following advantages:

the high-temperature treatment device of the pultrusion system for preparing the fiber reinforced polymer rod comprises a matrix resin heating device, a front preheating device, a rear preheating device, a high-temperature gelling device, a high-temperature curing and forming device and a cooling device, wherein the high-temperature treatment device has universality on preparing a target FRP rod with thermosetting resin or thermoplastic resin as a matrix phase. In the high-temperature treatment process, a plurality of temperature gradient heating processes are set, so that adverse effects on the FRP rod caused by sudden temperature rise and sudden temperature drop of the resin are prevented, and the discreteness of the mechanical performance of the FRP rod is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a pultrusion system for producing fiber-reinforced polymer rods in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the external configuration of a dipping apparatus and a matrix resin heating apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of a dipping apparatus and a matrix resin heating apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of the internal structure of a pre-heating device according to an embodiment of the present invention;

FIG. 5 is a schematic connection diagram of a post-preheating device, a high-temperature gelling device, a high-temperature curing and forming device and a cooling device according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a heating apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a glue scraping device according to an embodiment of the invention;

FIG. 8 is a schematic structural view of a cap of an embodiment of the present invention;

FIG. 9 is a schematic structural view of a scratch sheet of an embodiment of the present invention;

FIG. 10 is a schematic view of a spring clip and card slot connection of an embodiment of the present invention;

fig. 11 is an external structural view of the connector.

The reference numbers in the figures denote:

1. the yarn ball forming machine comprises a yarn ball placing frame, 2 parts of a gum dipping device, 201 parts of a gum dipping chamber, 202 parts of a yarn collecting plate I, 203 parts of a yarn collecting plate II, 204 parts of a circular hole, 205 parts of a gum dipping pool, 206 parts of a pressure rod rotating shaft, 3 parts of a matrix resin heating device, 301 parts of a high-temperature chamber, 302 parts of a heating device, 3021 parts of a heat driving fan, 3022 parts of a heater, 303 parts of an air inlet hole, 4 parts of a preforming device, 5 parts of a front preheating device, 501 parts of a pipeline chamber, 502 parts of a display screen, 503 parts of a waste gum collecting container, 504 parts of a normal-temperature observation hole, 6 parts of a secondary forming and winding device, 7 parts of a rear preheating device, 8 parts of a high-temperature gelling device, 9 parts of a high-temperature curing forming device, 10 parts of a cooling device, 11 parts of a traction device, 12 parts of a gum scraping device, 120 parts of a cap, 121 parts of a gum scraping sheet, 122 parts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the field of composites, FRP rods are composed of matrix phase resins and reinforcing phase fibers, the matrix phase resins often being divided into two main categories: thermosetting resin and thermoplastic resin, thermosetting resin means resin which is liquid at normal temperature and is polymerized to form solid at high temperature, and thermoplastic resin is opposite to thermosetting resin in performance. The mechanical properties of the FRP rod are determined by the properties of the component materials, and are also related to the process of curing reaction of the resin at different temperatures, and if the wettability of the resin on the fiber surface is poor or the resin is unevenly distributed among the fibers, the mechanical properties of the FRP rod after the resin is cured are greatly reduced or have great discreteness.

As shown in fig. 1, the present embodiment provides a pultrusion system for manufacturing a fiber reinforced polymer rod, which includes a yarn package placing frame 1, a dipping device 2, a preforming device 4, a secondary forming and winding device 6, and a traction device 11 connected in sequence; the yarn ball placing frame 1 is used for placing fiber yarn balls, the gum dipping device 2 is used for dipping fiber bundles in resin, the preforming device 4 is used for preliminarily extruding the fiber bundles which are dipped in the resin and distributed in an array mode to form preformed fiber rods, the secondary forming device is used for secondarily extruding the preheated preformed fiber rods to further increase the uniform distribution of the resin among fibers, the winding device is used for binding the fiber reinforced polymer rods and generating winding ribs on the surfaces of the fiber reinforced polymer rods, and the traction device 11 is used for providing traction force. The yarn ball placing frame 1, the gum dipping device 2, the preforming device 4, the secondary forming device and the traction device 11 all adopt the prior art. The improvement of the invention is that the system also comprises a high-temperature treatment device, as shown in figure 5, the high-temperature treatment device comprises a matrix resin heating device 3, a front preheating device 5, a rear preheating device 7, a high-temperature gel device 8, a high-temperature solidification forming device 9 and a cooling device 10.

The impregnation device 2 has universality for both thermosetting resin and thermoplastic resin, as shown in fig. 2 and fig. 3, the impregnation device 2 comprises an impregnation chamber 201, a first yarn collecting plate 202 is arranged at an inlet of the impregnation chamber 201, a second yarn collecting plate 203 is arranged at an outlet of the impregnation chamber 201, a plurality of rows of round holes 204 are arrayed on the first yarn collecting plate 202 and the second yarn collecting plate 203 for inputting and outputting continuous fibers into the impregnation chamber 201, the number and the positions of the round holes 204 on the first yarn collecting plate 202 and the second yarn collecting plate 203 are consistent, and the positions are in one-to-one correspondence so as to prevent the winding condition caused by excessive number of fiber bundles; a gumming tank 205 is arranged at the bottom of the gumming chamber 201, and a pressure rod rotating shaft 206 is arranged in the gumming tank 205; continuous fibers enter from a circular hole 204 on the first yarn collecting plate 202, pass through the lower part of a pressure rod rotating shaft 206 in a gum dipping pool 205 containing resin, and are led out from a circular hole 204 on the second yarn collecting plate 203.

As shown in fig. 2 and 3, the matrix resin heating device 3 is installed right below the impregnation device 2, the matrix resin heating device 3 and the impregnation device 2 are connected with the preforming device 4 through an external box structure, and the matrix resin heating device 3 is used for heating matrix resin, supplying heat to the impregnation device 2 to increase resin fluidity, facilitating the coating of the resin on the fiber surface, promoting the wettability of the resin on the fiber surface, and solving the problem that the viscosity of the resin changes under different working environment temperatures. The matrix resin heating device 3 comprises a high-temperature chamber 301, a heating device 302 is arranged at the lower part of the high-temperature chamber 301, air inlet holes 303 are arranged on the periphery of the high-temperature chamber 301, and as shown in fig. 6, the heating device 302 comprises a heat-driving fan 3021 and a heater 3022; the heater 3022 heats air by using a thermocouple wire, so that the temperature in the high temperature chamber 301 can reach several hundred degrees centigrade, and the dipping device 2 can be used for both thermosetting resin and thermoplastic resin, which cannot be realized by a water bath heating dipping device. The heater 3022 supplies heat to the high temperature chamber 301 and the heat generated by the heater 3022 is transferred to the high temperature chamber 301 by the heat dissipation fan 3021, and the air inside the high temperature chamber 301 is disturbed by the heat dissipation fan 3021 in a dynamic process to achieve uniform distribution of the temperature inside the high temperature chamber 301. Air inlets 303 are formed around the high temperature chamber 301 to continuously supply air to the heating device 302.

As shown in fig. 4, the inlet of the pre-preheating device 5 is connected with the pre-forming device 4 through the glue scraping device 12, and the outlet is connected with the post-forming and winding device 6 through the glue scraping device 12, so as to preheat the fiber reinforced polymer rod extruded by the pre-forming device 4, increase the fluidity of the resin inside the pre-forming FRP rod, help the resin inside the pre-forming FRP rod to redistribute when the rod is subjected to the secondary extrusion, and simultaneously, form a weak solidified layer on the surface of the pre-forming FRP rod after preheating, so as to prevent the resin inside the rod from overflowing when the rod is subsequently subjected to the secondary extrusion and winding constraint. Preceding preheating device 5 includes high temperature room 301 and is located the pipeline room 501 of high temperature room 301 below, the adoption thermal insulation material keeps warm around high temperature room 301, pipeline room 501 is used for placing controlgear's electrical components, arrange circuit and waste gas collection pipeline, the front of high temperature room 301 sets up the display screen 502 that shows high temperature room 301 temperature in real time, set up a plurality of heating device 302 at the top of high temperature room 301, the structure of this heating device 302 is the same with heating device 302's in the matrix resin heating device 3 structure, place useless glue collecting container 503 in the bottom of high temperature room 301, useless glue collecting container 503 is used for collecting the resin that drops from the FRP pole that preheats.

As shown in fig. 7 and 9, the frictioning device 12 includes a cap 120, a frictioning blade 121 and a connecting member 122, as shown in fig. 8, the cap 120 includes an opening 123 with an inverted passivation slope, a fixing bolt 124 and a frictioning blade fixing slot 125, the opening 123 with the inverted passivation slope is used to prevent the fiber from breaking due to friction with the edge of the opening 123, and the scraped resin flows into a waste rubber collecting container 503 below the frictioning device 12 along the inverted slope, and simultaneously prevents the scraped resin from gathering at the opening 123 and infiltrating into the inside of the frictioning device 12. The scraping sheet 121 is firstly placed in the scraping sheet fixing groove 125, then the cap 120 with the scraping sheet 121 is firmly fixed on the connecting piece 122 through the fixing bolt 124, the end part of the connecting piece 122 tightly pushes the scraping sheet 121 in the scraping sheet fixing groove 125, and the scraping is prevented from being imperfect due to the fact that the scraping sheet 121 shakes up and down and left and right in the working process. Preferably, the material of the rubber blade 121 is made of wear-resistant rubber. As shown in fig. 10 and 11, the connecting member 122 is made by drilling a solid cylinder with a relatively high rigidity at the center, two annular clamping grooves 126 are formed outside the connecting member 122, the spring clips 127 are locked in the clamping grooves 126, so that the spring clips 127 are always located at original positions, one of the spring clips 127 is clamped inside one side of the box body of the preforming device 4 or inside one side of the box body of the secondary forming device, the other spring clip 127 is clamped inside the front preheating device 5, the spring clip 127 prevents the connecting member 122 from relatively large displacement in the fiber advancing direction, and the preforming device 4, the front preheating device 5 and the secondary forming device connected by the connecting member 122 are stably connected together.

The entry of back preheating device 7 is connected with post forming and wind device 6 through frictioning device 12, the export is connected with high temperature gel device 8 through frictioning device 12, be used for carrying out preheating treatment with the fiber reinforcement polymer pole after secondary extrusion and winding become the rib, on the one hand, increase the mobility of the inside resin of pole material once more, make the inside resin redistribution of ribbed FRP pole, on the other hand, after preventing ribbed FRP pole to get into the higher environment of temperature suddenly, the matrix resin sharply heaies up, the polyreaction takes place rapidly, cause latent resin curing defect, the temperature that sets up of back preheating device 7 is less than the temperature that sets up of high temperature gel device 8, and form certain temperature gradient with high temperature gel device 8 setting temperature. The structure of the rear preheating device 7 is basically the same as that of the front preheating device 5, but a normal temperature observation port 504 is additionally arranged, so that the rear preheating device 7 is very high in internal temperature and can not be opened randomly due to the fact that the internal temperature is prevented from being disordered in the operation process of the equipment, the device parameters can be adjusted timely according to the state in order to control the state of the FRP rod inside the rear preheating device 7, and the normal temperature observation port 504 is connected with the rear preheating device 7 into a whole through a box body structure.

The inlet of the high-temperature gel device 8 is connected with the post-preheating device 7 through a glue scraping device 12, and the outlet of the high-temperature gel device is connected with the high-temperature curing and forming device 9 through the glue scraping device 12, so that the ribbed fiber reinforced polymer rod treated by the post-preheating device 7 is subjected to gel reaction, and the resin is changed into a rubber state from a liquid state; the high temperature gelling device 8 has the same construction as the post-preheating device 7.

The inlet of the high-temperature curing forming device 9 is connected with the high-temperature gel device 8 through a glue scraping device 12, the outlet of the high-temperature curing forming device is connected with the cooling device 10 through the glue scraping device 12, the high-temperature curing forming device is used for carrying out high-temperature treatment on the preformed fiber reinforced polymer rod which is subjected to the gel reaction, and the resin is subjected to the curing reaction and is changed from a rubber state to a solid state; the high-temperature curing molding device 9 has the same configuration as the pre-heating device 5.

The cooling device 10 is used for exposing the completely solidified FRP rod in the high temperature state to the ambient temperature, and firstly, the cooling treatment process of the temperature gradient lower than the setting temperature of the high temperature solidification forming device 9 and higher than the ambient temperature is used for preventing the ambient temperature of the FRP rod in the high temperature state from suddenly dropping, and microcracks appear in the FRP rod caused by thermal expansion and cold contraction. The cooling device 10 and the pre-heating device 5 are also constructed in the same manner.

The invention has simple structure and convenient operation, can change the fluidity of the resin among the fibers for a plurality of times, redistribute the resin among the fibers for a plurality of times, greatly increase the wettability of the resin on the surface of the fibers and the uniform distribution among the fibers, thereby ensuring the full play of the mechanical performance of the FRP rod and greatly reducing the discreteness of the mechanical performance of the FRP rod.

The process for preparing a fiber reinforced polymer rod using the pultrusion system described above comprises the steps of:

and step S21, pulling out the target fiber bundle required by the FRP rod preparation from the yarn group placing frame 1, and sequentially passing through the gum dipping device 2, the preforming device 4, the front preheating device 5, the secondary forming and winding device 6, the rear preheating device 7, the high-temperature gelling device 8, the high-temperature curing and forming device 9 and the cooling device 10 until reaching between the upper crawler and the lower crawler of the traction device 11.

In step S22, the rotating shaft 206 of the pressing rod is lifted, and the target fiber bundle passing through the dipping apparatus 2 is pressed into the dipping tank 205 containing the bisphenol a epoxy vinyl resin.

Step S23, determining temperature parameters to be set by the matrix resin heating device 3, the front preheating device 5, the rear preheating device 7, the high-temperature gel device 8, the high-temperature curing and forming device 9 and the cooling device 10 according to the dynamic thermodynamic characteristics of the thermosetting bisphenol A epoxy ethylene resin; the viscosity test and the exothermic peak curve test of the resin determine that the bisphenol A epoxy ethylene resin has the best fluidity at 40 ℃ and is most suitable for the polymerization reaction at 125 ℃, so when the matrix phase is thermosetting bisphenol A epoxy ethylene resin, the setting temperature of the matrix resin heating device 3 is 40 ℃, the setting temperature of the high-temperature gel device 8 is 125 ℃, the setting temperature of the preheating device 7 is generally 20-30 ℃ lower than that of the high-temperature gel device 8, and the setting temperature of the high-temperature curing forming device 9 is generally consistent with that of the high-temperature gel device 8, therefore, the setting temperature of the preheating device 7 is 100 ℃ after determination, the setting temperature of the high-temperature curing forming device 9 is 125 ℃, and finally, according to the design purpose of the cooling device 10, the micro-cracks caused by the sudden reduction of the environmental temperature of the high-temperature formed FRP rod are prevented from occurring, since a temperature gradient is required to be decreased to a certain temperature from the temperature of the high-temperature curing molding device 9, the temperature of the cooling device 10 is 60 ℃, and the temperature of the front preheating device 5 is increased to a certain temperature from the temperature of the base resin heating device 3, the temperature of the front preheating device 5 is 50 ℃.

Step S24, the determined temperature parameters are sequentially input into a computer control terminal, the computer control terminal sends heating signals to each section of high-temperature device, each section of high-temperature device starts to heat according to the preset temperature parameters until the temperature reaches the set parameters, and the constant temperature state is started to be kept; the dynamic temperature rise of each section of the high temperature device can be observed through the display screen 502.

And step S25, after the internal temperature of the high-temperature chamber of all the devices reaches the preset temperature, displaying a ready prompt on the computer control terminal, clicking an operation button on the desktop of the computer control terminal, receiving an operation instruction by the traction device 11, closing the upper and lower crawler belts to drive the target fiber bundle to slowly move forward, and forming a finished FRP rod, namely a target product, after the resin-impregnated target fiber bundle sequentially passes through all the high-temperature devices of the equipment.

The pultrusion system of the present invention can also prepare a fiber reinforced polymer rod using thermoplastic cyclic butylene terephthalate (CBT 100) as a matrix phase, as in the above-mentioned steps S21 to S25, except that the temperature parameters for each high-temperature device are different, the set temperature of the matrix resin heating device 3 is 190 ℃, the set temperature of the front preheating device 5 is 160 ℃, the set temperature of the rear preheating device 7 is 120 ℃, the set temperature of the high-temperature gelling device 8 is 80 ℃, the set temperature of the high-temperature curing molding device 9 is 40 ℃, and the set temperature of the cooling device 10 is room temperature.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "a" or "an," and the like, do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention, and the scope of the present invention is defined by the appended claims.

Claims

1. A pultrusion system for preparing a fiber reinforced polymer rod comprises a yarn group placing frame, a gum dipping device, a preforming device, a secondary forming and winding device and a traction device which are sequentially connected, and is characterized by further comprising a high-temperature treatment device, wherein the high-temperature treatment device comprises a matrix resin heating device, a front preheating device, a rear preheating device, a high-temperature gel device, a high-temperature curing and forming device and a cooling device;

2. The pultrusion system for preparing the fiber reinforced polymer rod as claimed in claim 1, wherein the dipping device comprises a dipping chamber, a first yarn collecting plate is arranged at an inlet of the dipping chamber, a second yarn collecting plate is arranged at an outlet of the dipping chamber, and array circular holes with consistent number and positions are formed in the first yarn collecting plate and the second yarn collecting plate; the bottom of the gum dipping chamber is provided with a gum dipping pool, and a pressure lever rotating shaft is arranged in the gum dipping pool.

3. The pultrusion system for manufacturing the fiber reinforced polymer rod according to claim 1, wherein the matrix resin heating means includes a high temperature chamber, the heating means is provided at a lower portion of the high temperature chamber, and air intake holes are opened at a periphery of the high temperature chamber.

4. The pultrusion system for manufacturing fiber reinforced polymer rods according to claim 3, wherein the front preheating device, the rear preheating device, the high temperature gelling device, the high temperature curing and forming device and the cooling device are of the same construction and each includes a high temperature chamber and a pipeline chamber located below the high temperature chamber, a display screen is provided on the front surface of the high temperature chamber, a plurality of heating devices are provided on the top of the high temperature chamber, and a waste glue collecting container is placed on the bottom of the high temperature chamber.

5. The pultrusion system for producing the fiber-reinforced polymer rod according to claim 4, wherein the heating device includes a heat-driving fan and a heater, the heater is used for supplying heat to the high-temperature chamber, and the heat-driving fan is used for uniformly diffusing the heat generated by the heater into the high-temperature chamber.

6. The pultrusion system for manufacturing fiber reinforced polymer rods according to claim 4, wherein the post-preheating device and the high-temperature gelling device are added with a normal-temperature viewing port.

7. The pultrusion system for producing the fiber reinforced polymer rod as claimed in claim 1, wherein the frictioning device includes a cap, a frictioning sheet, and a connector, the cap includes an orifice, a fixing bolt, and a frictioning sheet fixing slot, the frictioning sheet is placed in the frictioning sheet fixing slot, the fixing bolt fixes the cap on the connector, and an end of the connector pushes the frictioning sheet against the frictioning sheet fixing slot.

8. The pultrusion system for manufacturing fiber reinforced polymer rods according to claim 7, wherein two annular clamping grooves are formed in the outer portion of the connecting piece, spring clamps are locked in the clamping grooves, and the two spring clamps are clamped in the inner portions of two adjacent devices for connecting the two adjacent devices.