KR102331489B1 - Non-combustible FRP multilayer sheet continuous manufacturing device for concrete repair and reinforcement that enables collection and recycling of non-combustible resins - Google Patents

Abstract

The present invention relates to an apparatus for continuously manufacturing a non-combustible FRP multilayer sheet for repairing and reinforcing concrete, in which each fiberglass is uniformly impregnated with a non-combustible resin solution for impregnation while preventing precipitation of the non-combustible resin solution for impregnation and processes, such as drying, pressing and bonding, thermal curing, and the like, are continuously performed, thereby increasing production efficiency and stably manufacturing high-quality products without warping or deformation. According to the present invention, the apparatus comprises: a plurality of supply rolls simultaneously supplying sheet-form fiber glass; an impregnation tank installed to allow each fiber glass transferred from the plurality of supply rolls to pass through the inside to guide a non-combustible resin stored therein to be impregnated into the fiber glass; a resin removing member installed at the outlet side of the impregnation tank to separate and remove the non-combustible resin remaining unimpregnated on the surface of each fiber glass while passing through each of the fiber glasses drawn out from the impregnation tank; a process chamber in which drying, pressing, bonding, and thermal curing processes are sequentially performed while passing each fiber glass through a heater installed therein; a plurality of transfer rollers transferring the fiber glass; and a recovery roll winding and recovering the cooled laminated fiber glass after being withdrawn from the process chamber.

Description

Non-combustible FRP multilayer sheet continuous manufacturing device for concrete repair and reinforcement that enables collection and recycling of non-combustible resins

The present invention relates to an FRP multi-layer sheet manufacturing apparatus for manufacturing a high-strength FRP multi-layer sheet used for repair and reinforcement of concrete. Continuous manufacturing of non-flammable FRP multi-layer sheets for concrete repair and reinforcement, which increases production efficiency and stably manufactures high-quality products without bending or deformation by continuously performing processes such as drying, pressing and cementing, and thermal curing after being impregnated It's about the device.

Recently, the development of non-combustible resins is being actively conducted in a situation in which the non-combustible performance of internal reinforcements in concrete structures such as tunnels is being emphasized day by day.

However, it is true that most of the non-combustible resins being developed to date are water-based types using melamine or phenolic resins, and there are many problems in pultrusion molding due to the inorganic filler added thereto to enhance the non-flammable effect.

Accordingly, non-combustible FRP sheets for concrete reinforcement are being manufactured. In the manufacturing of non-flammable FRP sheets, fiberglass is impregnated with non-combustible resin, and after lamination, it is pressurized and heat-cured using a hot plate press. It was done by a complicated process of separate pressurization and drying processes for the discharge of basic water vapor and gas.

The conventional manufacturing of FRP sheets for repair and reinforcement resulted in fatal results in that the cost increased and the market competitiveness was weakened due to the decrease in productivity and the increase in the defect rate of the product.

Korean Patent Publication No. 1625390 (2016.05.24.)

Accordingly, the present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to prevent the precipitation of the non-combustible resin solution for impregnation while uniformly impregnating each fiberglass with the non-combustible resin solution for impregnation. To provide a continuous manufacturing device for non-combustible FRP multi-layer sheet for concrete repair and reinforcement that continuously processes drying, pressurizing, cementing, and thermal curing processes to increase production efficiency and stably manufacture high-quality products without warping or deformation. there is

In order to achieve the above object, an apparatus for continuous manufacturing of non-combustible FRP multi-layer sheets for concrete repair and reinforcement according to the technical idea of the present invention includes: a plurality of supply rolls for simultaneously supplying sheet-form fiberglass; an impregnation tank installed so that each of the fiber glasses transferred from the plurality of supply rolls passes through the inside to induce the non-combustible resin stored therein to be impregnated into the fiber glass; a resin removing member installed at the outlet side of the impregnation tank to separate and remove the non-combustible resin remaining unimpregnated on the surface of each of the fiber glasses while passing through each of the fiber glasses drawn out from the impregnation tank; a process chamber in which drying, pressing, bonding, and thermal curing processes are sequentially performed while passing each of the fiber glasses through a heater installed inside;

a plurality of conveying rollers for conveying the fiberglass; and a recovery roll for winding and recovering the cooled fiberglass in the form of cementation after being drawn out from the process chamber.

Here, the process chamber includes a preheating drying chamber for preheating and drying the fiberglass impregnated with a non-combustible resin, and a thermosetting chamber for thermally curing the incombustible resin impregnated in the fiberglass by further heating the fiberglass passing through the preheating and drying chamber; The annealing chamber for annealing the fiberglass via the thermosetting chamber is sequentially arranged, and the preheat drying chamber, the thermosetting chamber, and the annealing chamber are equipped with heaters and temperature sensors that allow individual control to different temperatures. .

In addition, an air vent may be further installed on the upper side of the process chamber to smoothly discharge moisture and gas generated from the non-combustible resin.

In addition, a recovery tank for recovering the non-combustible resin that is peeled off and falling from the surface of the fiberglass by the resin removal member from the lower side, and a transport pipe for transporting the non-combustible resin recovered from the recovery tank and pumped into the impregnation tank It may be characterized in that it is provided.

In addition, a plurality of pairs of conveying rollers arranged sequentially are installed in the preheating drying room, and as they are arranged at the rear side, the distance between the conveying rollers forming a pair is narrowed. A plurality of auxiliary rollers for maintaining spacing are installed in a group to guide the fiber glass to be transported in a spaced state, and the auxiliary rollers of each group belong to a group arranged rearward corresponding to the separation distance of the paired feeding rollers. It may be characterized in that it is provided with a relatively small size to induce the separation of the fiber glasses to be gradually narrowed.

In addition, a plurality of auxiliary rollers belonging to the same group are arranged in a line between the conveying rollers forming a pair on both sides, and a plurality of slide movable bodies installed in a state of rotatably supporting the rotation shaft of each of the auxiliary rollers, and the slide movable bodies A plurality of auxiliary rollers belonging to the same group are spaced apart from each other according to the thickness of the fiber glass, further comprising: a guide rail for guiding to be slidably displaceable; and a spring installed between the slide movable bodies inside the guide rail for elastic support. It may be characterized by allowing adjustments to be made.

In addition, the resin removing member may include: a main body having a first wall and a second wall having a plurality of through holes at regular intervals to allow the fiber glass to pass therethrough; A non-combustible resin that is inserted into the through hole formed in the first wall and provided with a first through hole for penetrating the fiber glass, and the inlet of the first through hole is sharply formed toward the tip end of the fiber glass surface without being impregnated with it. a first peeling body having a first triangular protrusion for peeling; and a second through hole installed to be fitted into the through hole formed in the second wall and penetrating the fiber glass, and the inlet of the second through hole is sharply formed toward the tip end without being peeled off by the first peeling body. a second release body having a second triangular protrusion for peeling the non-combustible resin remaining on the fiberglass surface again; It may be characterized in that it is formed to have a narrow upper and lower width compared to that, so that the non-combustible resin remaining without being impregnated in the fiberglass can be gradually removed over a second period.

The continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement according to the present invention prevents the precipitation of the non-combustible resin solution for impregnation and uniformly impregnates each fiberglass with the non-combustible resin solution for impregnation, followed by drying, pressurization, cementation, and heat. Processes such as hardening can be continuously performed to increase production efficiency, and high-quality products can be stably manufactured without warping or deformation.

1 is a configuration diagram for explaining the overall configuration of a non-combustible FRP multi-layer sheet continuous manufacturing apparatus for concrete repair and reinforcement according to an embodiment of the present invention;
Figure 2 is a cross-sectional view for explaining the configuration of the resin removal member in the continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement according to an embodiment of the present invention
Figure 3 is a cross-sectional view for explaining the configuration of the auxiliary roller module in the continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement according to an embodiment of the present invention

With reference to the accompanying drawings, it will be described in detail with respect to the continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement according to embodiments of the present invention. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than actual for clarity of the present invention, or shown reduced from reality in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as commonly used dictionary definitions should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in the present application, they are not to be interpreted in an ideal or excessively formal meaning. .

<Example>

1 is a block diagram illustrating the overall configuration of a continuous manufacturing apparatus for non-combustible FRP multi-layer sheets for concrete repair and reinforcement according to an embodiment of the present invention, and FIG. 2 is a non-flammable FRP for concrete repair and reinforcement according to an embodiment of the present invention. It is a cross-sectional view for explaining the configuration of the resin removal member in the continuous multi-layer sheet manufacturing apparatus, Figure 3 is for explaining the configuration of the auxiliary roller module in the non-flammable FRP multi-layer sheet continuous manufacturing apparatus for concrete repair and reinforcement according to an embodiment of the present invention It is a cross section.

As shown, the non-flammable FRP multi-layer sheet continuous manufacturing apparatus for concrete repair and reinforcement according to an embodiment of the present invention is a process chamber 18 including a preheating drying room (R1), a thermosetting room (R2) and an annealing room (R3) The supply roll 11, the impregnation tank 13, the resin removal member 16, the transfer roller 19, the auxiliary roller 20, and the recovery roll 27 as main components are centered on the .

With these components, the continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement according to the embodiment of the present invention prevents the precipitation of the non-combustible resin 14 for impregnation in liquid form and the non-combustible resin in each fiber glass 12 After uniformly impregnating (14), processes such as drying, pressing and bonding, and heat curing are continuously performed to increase production efficiency and to stably manufacture high-quality non-flammable FRP multi-layer sheet products for concrete repair and reinforcement without warping or deformation. configured to be able to

Hereinafter, an apparatus for continuous manufacturing of non-combustible FRP multi-layer sheets for concrete repair and reinforcement according to an embodiment of the present invention will be described in detail with reference to each of the above components.

A plurality of the supply rolls 11 are installed in a line at a distance from each other so as to simultaneously supply the fiber glass 12 in the form of a sheet. Accordingly, a plurality of fiber glasses 12 having a sheet or mat form can be simultaneously supplied from the supply roll 11 .

The impregnation tank 13 is installed so that each of the fiber glasses 12 transferred from the plurality of supply rolls 11 passes through and induces the non-combustible resin 14 stored therein to be impregnated into the fiber glass 12 . To this end, the non-combustible resin 14 to be impregnated into the fiberglass 12 is temporarily stored in the impregnation tank 13 . Here, a method in which the fiberglass 12 passes through the impregnation tank 13 may be provided in various ways. That is, as shown in FIG. 1 , the fiberglass 12 may pass through the sidewall of the impregnation tank 13 , and after the fiberglass 12 is introduced through the opened upper part of the impregnation tank 13 , the opening again It can also be drawn out through the upper part. In the former case, there is an advantage that the path through which the fiberglass 12 passes through the impregnation tank 13 is simple, but a plurality of through holes through which the fiberglass 12 passes must be provided in the front and rear walls of the impregnation tank 13 . and a sealing member must be additionally installed so that the non-combustible resin 14 stored therein does not flow out through the through hole. In the latter case, an additional sealing member is not required compared to the former, but a roller for changing the direction must be additionally installed so that the fiber glass 12 drawn into the impregnation tank 13 through the open upper part is drawn out. When the impregnation tank 13 is installed in this way, the incombustible resin 14 is naturally impregnated into the fiberglass 12 while the fiberglass 12 passes through the inside of the impregnation tank 13 .

The resin removing member 16 is installed on the outlet side (rear side) of the impregnation tank 13 and individually passes each of the fiber glasses 12 drawn out from the impregnation tank 13 at the same time, while the surface of each of the fiber glasses 12 It serves to remove the remaining resin impregnated from the To this end, the resin removal member 16 includes a first wall 16A having a plurality of through-holes 161 and a first wall 16A having a plurality of through holes 161 as shown in FIG. 2 to effectively remove the residual resin impregnated in the fiberglass 12 . The first detachable body 162 and the second detachable body 163 are coupled to the second wall 16B to form one module.

The resin removal member 16 is provided with a first wall 16A and a second wall 16B having a plurality of through holes 161 spaced apart from each other so that the fiber glass can pass therethrough in a spaced apart form on the front and rear sides. It is a tubular member wider left and right than the top and bottom.

The first release body 162 is to primarily remove the non-combustible resin 14 remaining after being impregnated on the surface of the fiber glass 12 . The first release body 162 is preferably made of a Teflon material to reduce friction with the fiber glass 12, and is installed by being inserted into the through holes 161 formed in the first wall 16A, respectively. The first release body 162 is provided with a wide first through hole 162a to the left and right so as to penetrate the sheet-shaped fiber glass 12, and the entrance of the first through hole 162a is sharper toward the tip. and a first triangular protrusion 162b for peeling off the non-combustible resin 14 that is not impregnated on the surface of the fiber glass 12 and is not impregnated on the surface of the fiber glass 12 . The incombustible resin 14 peeled off from the surface of the fiberglass 12 by the first triangular protrusion 162b moves along the inclined surface of the first triangular protrusion 162b and then falls.

The second release body 163 is for secondarily removing the non-combustible resin 14 remaining after being peeled off by the first release body 162 . The second release body 163 is also preferably made of Teflon material to reduce friction with the fiber glass 12 and is installed by being inserted into the through hole 161 formed in the second wall 16B. The second release body 163 has a wide second through hole 163a on the left and right so as to penetrate the sheet-shaped fiber glass 12, and the entrance of the second through hole 163a is sharpened toward the tip. and a second triangular protrusion 163b for peeling off the remaining resin that is not impregnated on the surface of the fiberglass 12 in a state that is not peeled off by the first release body 162 . Here, the second through hole 163a of the second peeling body 163 is formed to have a narrower upper and lower width than the first through hole 162a of the first peeling body 162, so that the first peeling body 162 is formed. It allows the non-combustible resin 14 still remaining in the fiber glass 12 to be more thoroughly removed after being removed by the .

The non-combustible resin 14 peeled off from the fiberglass 12 by the above-described resin removing member 16 falls and is recovered in the recovery tank 24 installed at the lower side, and the non-combustible resin 14 thus recovered is not After being pumped by the illustrated pump and transferred along the transfer pipe 26 , it is fed back into the impregnation tank 13 through the injection nozzle 15 installed on the upper side of the impregnation tank 13 . Accordingly, it is possible to continuously recycle the non-combustible resin 14 that is not properly impregnated into the fiberglass 12 and may be discarded without wasting.

The process chamber 18 serves to sequentially perform drying, pressing and bonding, and thermal curing processes while passing each of the fiber glasses 12 inside. To this end, the process chamber 18 further heats the preheating drying chamber R1 for preheating and drying the fiberglass 12 impregnated with the incombustible resin 14 and the fiberglass 12 passing through the preheating drying room R1. and a thermosetting chamber (R2) for thermosetting the incombustible resin 14 impregnated in the fiberglass 12, and an annealing chamber (R3) for annealing the fiberglass 12 via the thermosetting chamber (R2). do. These preheat drying chamber (R1), thermosetting chamber (R2) and annealing chamber (R3) are sequentially arranged from the front side to the rear side as shown in FIG. A heater 21 and temperature sensors 22-1, 22-2-22-3 may be individually controlled to different temperatures in the preheat drying chamber R1, the thermosetting chamber R2, and the annealing chamber R3. Each of these is installed. And the moisture and gas (c) generated from the non-combustible resin 14 in the preheating drying chamber R1, the thermosetting chamber R2, and the annealing chamber R3 are air vents 23 installed above the process chamber 18. to be smoothly discharged to the outside by

Here, the heater 21 is provided to be capable of generating heat by electric current, and due to the heating of the heater 21, in the preheat drying chamber R1, the thermosetting chamber R2, and the annealing chamber R3. It is preferable that a blower (blower) to guide basic water vapor and gas generated from the incombustible resin 14 toward the air vent 23 is additionally installed.

As shown in FIG. 1 , the conveying rollers 19 are arranged in a plurality of pairs between the supply roll 11 and the recovery roll 27 to convey and press the fiber glass 12 . In the case of the fiber glass 12 that needs to be transported, the transport roller 19 must be installed in consideration of this need because a plurality of them must be individually transported and then cemented together for the impregnation of the incombustible resin 14 at first. To this end, in the case of the preheating drying chamber R1, a plurality of pairs of sequentially arranged transfer rollers 19 are installed, and the spacing between the paired transfer rollers 19 is gradually narrowed as they are arranged to the rear side. Accordingly, in the impregnation tank 13 for the impregnation of the non-combustible resin 14, the fiber glass 12, which were individually transported in large numbers, are gradually gathered and naturally coalesced.

Here, a plurality of auxiliary rollers 20 for maintaining the distance are formed between the transfer rollers 19 that are paired with each other at each point of the drying chamber R1 to guide the transfer in a state where the fiber glasses 12 are spaced apart. is installed The auxiliary rollers 20 of each group are provided with a relatively small size as those belonging to the group disposed rearward corresponding to the separation distance of the conveying rollers 19 that are paired with each other, so that the separation of the fiberglass 12 is gradually increased. It narrows down and induces them to coalesce to each other. A plurality of auxiliary rollers 20 belonging to the same group are arranged in a line between the conveying rollers 19 forming a pair on both sides as shown in FIG. 3 , and rotatably support the rotation shaft 21 of each of the auxiliary rollers 20 A plurality of slide movable bodies 192 installed in one state, a guide rail 191 guiding the slide movable bodies 192 to be slidably displaceable, and between the slide movable bodies 192 inside the guide rail 191 A spring 193 that is installed and elastically supported is further provided to form one module. Thereby, a plurality of auxiliary rollers 20 belonging to the same group are allowed to freely adjust the spacing corresponding to the thickness of the fiberglass 12 . According to this configuration, since it is possible to control the number and thickness of the fiberglass 12 to be bonded, it becomes possible to produce non-combustible FRP multi-layer sheets for concrete repair and reinforcement having various thicknesses. During this series of processes, the transfer roller 19 and the auxiliary roller 20 rotate in the b direction as shown in FIG. 1 to move the fiber glass 12 in the a direction. At this time, it is preferable to adjust the rotational speed of the conveying roller 19 from a minimum of 10 rpm to a maximum of 60 rpm depending on the product because the thermal curing temperature must be changed according to the thickness of the product to be produced and the conveying speed must also be changed. After going through a series of processes in the process chamber 18, the fiber glass 12 in the form of cementation drawn out of the process chamber 18 is naturally cooled while being transported through a transport roller 19 installed outside, and then a recovery roll rotates in the c direction. (27) is wound and stored.

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the present invention, which is defined by the limits of the following claims.

11: Feed roll 12: Fiber glass
13: impregnation tank 16: resin removal member
18: process chamber 19: transfer roller
20: auxiliary roller 21: heater
23: air vent 24: recovery tank
26: transfer pipe 27: return roll

Claims (6)

a plurality of supply rolls for simultaneously supplying sheet-form fiberglass; an impregnation tank installed so that each of the fiber glasses transferred from a plurality of supply rolls passes through the inside to induce the non-combustible resin stored therein to be impregnated into the fiber glass; a resin removing member installed at the outlet side of the impregnation tank to separate and remove the non-combustible resin remaining unimpregnated on the surface of each of the fiber glasses while passing through each of the fiber glasses drawn out from the impregnation tank; a process chamber in which drying, pressing, bonding, and thermal curing processes are sequentially performed while passing each of the fiber glasses through a heater installed; a plurality of conveying rollers for conveying the fiberglass; and a recovery roll that winds and recovers the cooled fiberglass in the form of cementation after being drawn out from the process chamber;
A recovery tank for recovering from the lower side the non-combustible resin peeled off and falling from the surface of the fiberglass by the resin removing member, and a transport pipe for transporting the non-combustible resin recovered from the recovery tank and pumped into the impregnation tank, ,
The process chamber includes a preheating drying chamber for preheating and drying the fiberglass impregnated with a non-combustible resin, a thermosetting chamber for further heating the fiberglass passing through the preheating drying room to thermoset the nonflammable resin impregnated in the fiberglass, and the thermosetting chamber Annealing chambers for annealing the fiber glass via
The preheat drying room, the thermosetting room, and the annealing room are each installed with a heater and a temperature sensor to enable individual control at different temperatures. delete According to claim 1,
Continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement, characterized in that an air vent is further installed on the upper side of the process chamber to smoothly discharge moisture and gas generated from the non-combustible resin. According to claim 1,
A plurality of pairs of sequentially arranged conveying rollers are installed in the preheating drying room, and the spacing between the paired conveying rollers is narrowed as they are arranged at the rear side,
At each point, a plurality of auxiliary rollers for maintaining spacing are installed in pairs to guide the fiber glass to be transported in a spaced state between the paired feeding rollers at each point. A continuous manufacturing apparatus for non-combustible FRP multi-layer sheets for concrete repair and reinforcement, characterized in that the ones belonging to the group arranged on the rear side corresponding to the separation distance are provided with a relatively small size to induce the separation of the fiber glasses to be gradually narrowed. According to claim 1,
A plurality of auxiliary rollers belonging to the same group are arranged in a line between the paired feed rollers on both sides,
A plurality of slide movable bodies installed in a state of rotatably supporting the rotation shaft of each of the auxiliary rollers, a guide rail guiding the slide movable bodies to be slidably displaceable, and installed between the slide movable bodies inside the guide rail A continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement, characterized in that it further includes a spring for elastically supporting it, allowing a plurality of auxiliary rollers belonging to the same group to adjust the spacing corresponding to the thickness of the fiberglass. According to claim 1,
The resin removal member,
a body having a first wall and a second wall in which a plurality of through holes are formed at regular intervals so that the fiber glass can pass therethrough;
A non-combustible resin that is inserted into the through hole formed in the first wall and provided with a first through hole for penetrating the fiber glass, and the inlet of the first through hole is sharply formed toward the tip end of the fiber glass surface without being impregnated with it. a first peeling body having a first triangular protrusion for peeling; and
It is installed by being fitted into the through hole formed in the second wall and having a second through hole penetrating the fiber glass. a second release body having a second triangular protrusion for peeling the non-combustible resin remaining on the glass surface again; Continuous manufacturing apparatus for non-combustible FRP multi-layer sheet for concrete repair and reinforcement, characterized in that it is formed to have a narrow vertical width and is capable of gradually removing non-combustible resin remaining without being impregnated in the fiber glass over a second period.

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