KR102670877B1 - Impregnation resin regulate apparatus for glass fiber reinforced plastic rebars - Google Patents

Abstract

The present invention collects resin-impregnated glass fiber yarns through a resin impregnation tank and a rib spiral winding unit into bundles for reinforcing bars using a funnel-type focusing scraper, and heats the thermosetting resin liquid penetrated into and between the glass fiber yarns. The impregnated resin control mechanism part, which twists the impregnated resin using the rotation of the funnel-shaped converging scraper to allow uniform residual and excess discharge to the outside while simultaneously cleaning the outer peripheral surface and improving the attachment strength of the reinforcing bar, and the rod body is in an up-down shape at the beginning of the front of the rib spiral winding part. The impregnating resin is wiped as a primer through the surface contact of the rod body in the state of concentrated entry of the glass fiber yarns from the resin impregnation tank, and then installed to enter the rib spiral winding part, the impregnation resin control mechanism, and the lower side of the primer resin cleaning rod. It is located on the side and consists of an excess resin liquid recovery shelf that recovers excess resin liquid that falls to the lower part of the focusing range; The impregnated resin control mechanism rotates the funnel-shaped converging scraper in a direction opposite to the rotation direction of the rib spiral winding part at a relatively slower speed than the speed of the rib spiral winding part, so that the glass fiber focusing bundle in the converging scraper tube is supported by the dense passing pressure. It is equipped with a reverse slow rotation operation unit that allows continuous firing at less than 0.1 TPI (Twist Per Inch).

Description

Impregnation resin control device for manufacturing glass fiber reinforcement {IMPREGNATION RESIN REGULATE APPARATUS FOR GLASS FIBER REINFORCED PLASTIC REBARS}

The present invention relates to the manufacture of structural pipes or substitutes for reinforcing bars used in concrete structures, and in particular to the improvement of a device for controlling the amount of resin impregnated when manufacturing glass fiber reinforcement bars that can replace reinforcing bars used in concrete structures. .

These days, concrete structures account for more than 70% of major infrastructure in Korea, and as concrete structures are deteriorating, it is urgent to prepare corresponding measures.

Typically, concrete structures are made to withstand forces applied in vertical and horizontal directions by planting multiple reinforcing bars in the concrete. However, over a long period of time, rainwater or river water seeps into the cracks of the concrete structure, rusting the steel bars inside and increasing the volume of the steel bars. Then, the rusty rebar inside pushes against the concrete, causing cracks in the concrete, and the corroded rebar inside causes damage to the rebar, which makes the concrete itself unable to withstand external forces, increasing the risk of collapse of the concrete structure. bring about

One of the ways to solve this problem of corrosion of reinforcing bars in concrete is to develop reinforcing bars that can replace reinforcing bars using non-corrosive materials.

Fiber Reinforced Plastic (hereinafter referred to as 'FRP') is a material that has high specific strength, light weight, and is particularly non-corrosive. For this reason, research is being conducted in many countries to develop reinforcing bars or tension materials that can replace reinforcing bars, and some are commercialized as products and used in actual fields.

In the production of FRP reinforcing bars for reinforcing bar substitutes, glass fiber is mainly used rather than carbon or aramid fiber for economic reasons. GFRP (Glass Fiber Reinforced Plastic) reinforcement (hereinafter referred to as 'glass fiber reinforcement') made using glass fiber has the advantages of being non-corrosive, light, and high in specific strength.

Glass fiber reinforcement is manufactured by performing an alignment process, an impregnation process, a winding process, a heating process, and a cooling process while the glass fiber yarns are moved.

Glass fiber reinforcement is made by aligning and arranging a plurality of glass fibers, then the glass fibers are wetted with an impregnated resin material, and then the glass fiber yarn for the ribs is wound into a spiral shape, and then heated to bond the focused glass fibers together. The product is completed by cooling the glass fibers as much as possible.

However, when constructing glass fiber reinforcing bars, if the amount of impregnated resin material required is greater than the glass fiber for forming the reinforcing bars, the durability of the reinforcing bars decreases and there is a disadvantage in that costs are incurred due to the use of a large amount of impregnating resin.

Therefore, there is a need to implement a device that can ensure a strong bond between the glass fiber yarns that make up the glass fiber reinforcement and reduce the amount of impregnating resin used for bonding.

Registered Patent No. 10-2156158 “Apparatus and method for manufacturing fiber-reinforced composite rebar for concrete”

Therefore, the purpose of the present invention is to provide an impregnation resin control device that ensures a strong bond between glass fiber yarns in the manufacture of glass fiber reinforcement bars, reduces the amount of impregnation resin used, and improves the adhesion strength of glass fiber reinforcement bars. It is in

The present invention according to the above object is an impregnating resin in a glass fiber reinforcement bar manufacturing process facility equipped with a resin impregnation tank for impregnating a plurality of glass fiber yarns with a thermosetting resin solution and a rib spiral winding unit for spirally winding glass fiber yarns for ribs. In the adjusting device, the resin-impregnated glass fiber yarns are collected through a resin impregnation tank and a rib spiral winding unit into bundles for reinforcing bars using a funnel-type focusing scraper, and the thermosetting resin penetrated into and between the glass fiber yarns is used. The impregnated resin control mechanism part, which twists the impregnated resin using the rotation of the funnel-shaped focusing scraper to discharge the uniform residual and excess amount of the liquid to the outside, clean the outer peripheral surface, and improve the attachment strength of the reinforcing bar, and the rod body goes up and down at the beginning of the front of the rib spiral winding part. Arranged in a form, the impregnated resin is wiped as a primer through the surface contact of the rod body in the state of concentrated entry of the glass fiber yarns from the resin impregnation tank, and then installed to enter the rib spiral winding part, the impregnation resin control mechanism, and the primer resin wipe rod. It is located on the lower side and consists of an excess resin liquid recovery shelf that recovers excess resin liquid that falls below the focusing range;

The impregnation resin control mechanism part; It is located at the rear of the rib spiral winding section and has a diameter that allows the passage of a bundle of glass fibers that matches the size specifications of the reinforcing bar, but the jig can be replaced and the bundles are moved by the pressure and pressure that the focused glass fiber yarns receive on the outer surface during passage. A funnel-shaped converging scraper is used to remove excess resin that seeps out of the outer circumferential surface, and the funnel-shaped concentrating scraper is rotated in a direction opposite to the rotation direction of the rib spiral winding part at a relatively slower speed than the speed of the rib spiral winding part to create a concentrated passing pressure. It is characterized by being composed of a reverse slow rotation operation unit that allows the glass fiber focusing bundle in the supported focusing scraper tube to be twisted at 0.1 TPI (Twist Per Inch) or less.

In addition, in the impregnated resin adjusting device for manufacturing glass fiber reinforcement of the present invention, the reverse slow rotation operation unit includes a worm wheel that detachably keys a funnel-shaped converging scraper, a worm connected to a worm wheel and a gear, and a worm that transmits a reverse rotation force to the shaft of the worm. It is characterized by being composed of a reduction motor.

The present invention adjusts the resin solution impregnated into the glass fiber yarns in manufacturing glass fiber reinforcement bars, thereby ensuring a strong bond between the glass fiber yarns constituting the glass fiber reinforcement bars, while reducing the amount of impregnating resin used, and attaching the glass fiber reinforcement bars. It has the advantage of improving strength. Additionally, it can improve the workplace environment by reducing the volatilization of components contained in thermoplastic resin liquid.

1 is a schematic configuration diagram of a process equipment for manufacturing glass fiber reinforcement according to an embodiment of the present invention;
Figure 2 is a perspective view of the configuration related to the impregnation resin control device for manufacturing glass fiber reinforcement bars among the process equipment of Figure 1;
Figure 3 is a perspective view of the bundle in the process of forming ribs on the core material for reinforcing bars by the rib spiral winding portion according to the present invention;
Figure 4 is a perspective view of the glass fiber reinforcement bar passing through the impregnated resin control mechanism according to the present invention;
Figure 5 is a photographic example of a glass fiber rebar product used as a substitute for rebar according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The glass fiber reinforcing bar of the present invention can be used as a substitute for rebar and can also be applied to other structural pipes.

Figure 1 is a schematic configuration diagram of a glass fiber reinforcement bar manufacturing process equipment according to an embodiment of the present invention.

As shown in FIG. 1, the glass fiber reinforcement bar manufacturing process equipment according to an embodiment of the present invention includes a glass fiber yarn supply unit 10, a resin impregnation unit 12, a rib spiral winding unit 13, and a funnel-shaped bundle scraper. It consists of an impregnation resin control mechanism unit 14 including (50), a curing unit 18, a cooling unit 20, a drawing transfer unit 22, and a cutting unit 24.

Starting from the glass fiber yarn supply unit 10 and passing through the resin impregnation unit 12, the glass fiber bundle 48 is divided into an impregnated resin control mechanism unit including a rib spiral winding unit 13 and a funnel-shaped focusing scraper 50. 14), a glass fiber bundle that is continuously connected to the curing unit 18, cooling unit 20, and drawing transfer unit 22, and is connected from the input point to the discharge point by the transfer drive in the drawing transfer unit 22. (48) is linked transfer.

The bundle 48 for the hardened reinforcing bar that has passed through the drawing transfer unit 22 is cut appropriately to the required length of the reinforcing bar by the cutting unit 24, thereby producing a glass fiber reinforcing bar product of the present invention as shown in the photographic example of Figure 5. 60).

The glass fiber yarn 42 wound on the multiple bobbins 40 of the glass fiber rack constituting the glass fiber yarn supply unit 10 is a glass fiber direct roving yarn. Numerous strands of glass fiber yarn 42 released from the plurality of bobbins 40 in the glass fiber yarn supply unit 10 are fed into the resin impregnation unit 12 through transfer guidance through the idle roll 28a.

The resin impregnation tank 44 of the resin impregnation unit 12 is filled with a thermosetting resin liquid 46 such as epoxy resin or vinyl ester resin, and glass fiber yarns 42 released from a plurality of bobbins 40 are idle. It is impregnated with the thermosetting resin liquid 46 in the resin impregnation tank 44 while passing through the resin impregnation tank 44 through transport guidance through idle rolls 28b and 28c.

After passing through the resin impregnation unit 12 and the rib spiral winding unit 13, each glass fiber yarn 42 is concentrated into a bundle to form one reinforcing bar body by the impregnated resin adjusting device of the present invention, thereby forming a bundle of glass fiber bundles. At the same time as it is formed as (48), a process is performed to remove excess resin solution seeping out of the bundle (48) and improve the core material bonding force and rib attachment strength of the reinforcing bar.

Figure 2 is a perspective view of the impregnated resin control device for manufacturing glass fiber reinforcement bars according to the present invention among the process equipment of Figure 1, and includes preliminary resin wiping rods 29 arranged up and down, and a funnel-shaped focusing scraper 50. and an impregnation resin control mechanism unit 14 that causes the focused scraper 50 to rotate slowly in the direction opposite to the rotation direction DW1 of the rib spiral winding unit 13 (DW2), and an excess resin liquid recovery shelf 38. Included.

In Figure 2, a rib spiral winding part 13 located at the front end of the focused scraper 50 is also shown, which is organically related to the impregnation resin control mechanism part 14 of the present invention. In addition, a frame-shaped rod diameter composition section 47 is provided on the upstream side of the rib spiral winding section 13, and the glass fiber threads 42 in the unfolded state after passing through the preliminary resin wiping rod 29 are bundled with a round diameter. It is guided to become the heartwood of the bundle (48).

The rib spiral winding part 13 is formed by spirally winding the rib glass fiber yarn 52a around the outer periphery of the bundle 48 that has passed through the rough resin cleaning rods 29 and the rod diameter composition part 47 to form the rib 52. As a means for forming, the core material 51 of the bundle 48 is tightly bound.

The fact that the impregnation resin control mechanism 14 of the present invention is organically related to the rib spiral winding part 13 means that the rib spiral winding part 13 is attached to the front end of the funnel-shaped focusing scraper 50 of the impregnation resin control mechanism 14. It is located in . In addition, the funnel-shaped focusing scraper 50 constituting the impregnating resin adjusting mechanism 14 of the present invention is formed by forming a rib 52 spirally wound around the focusing bundle 48 by the rib spiral winding unit 13. By rotating in the direction opposite to DW1 (DW2) and rotating slowly in reverse direction relative to the rotation of the rib spiral winding portion (13), the squeezed resin liquid spreads to the ribs (52) on the outer periphery of the bundle, creating an impregnation-like effect. It increases the adhesion strength between the core material 51 and the rib 54 of the glass fiber bundle 48 for reinforcing bars. In addition, by giving an additional weaving role, the thermosetting resin solution impregnated in the bundle (48) is distributed more evenly, thereby minimizing the amount of resin solution used.

Referring to Figure 2, the impregnation resin control device according to the present invention includes an impregnation resin control mechanism unit 14 including preliminary resin wiping rods 29 arranged up and down, a funnel-shaped focusing scraper 50, and excess resin It consists of a liquid recovery shelf (38).

The preliminary resin wiping rods (29) are arranged with a fixed rod in an up-down arrangement at the front entrance of the impregnation resin control mechanism (14), so that the impregnated resin liquid is only in the state of concentrating the glass fiber yarns from the resin impregnation tank (44). Due to friction with the fixed rods, it is first wiped with a primer.

The impregnation resin control mechanism unit 14 comes out of the resin impregnation tank 44 and uses the resin impregnated glass fiber yarn 42, which has passed through the preliminary resin wiping rods 29 and the rib spiral winding unit 13, into a funnel-type bundle scraper 50. By focusing the funnel-shaped focusing scraper (50) at super slow speeds, the fiberglass yarn (42) of the focusing bundle (48) and the glass fiber yarn ( 42), the thermosetting resin liquid 46 penetrated between the thermosetting resin liquid 46 is uniformly retained, the excess resin liquid is discharged to the outside, and the adhesion between the ribs 52 and the core material 51 in the reinforcing bar is improved.

The funnel-shaped converging scraper (50) constituting the impregnated resin adjusting mechanism part (14) has a diameter that allows the passage of the glass fiber converging bundle (48) that matches the size standard of the reinforcing bar, and can be replaced with a jig. Therefore, the glass fiber focusing bundle (48) passing through the pipe diameter of the funnel-type focusing scraper (50) oozes out from the outer peripheral surface of the focusing bundle due to the pressure force and pressure applied to the outer peripheral surface, so that the excess resin liquid is stored in the excess resin liquid recovery shelf (38) at the bottom. cause it to fall.

As a modified example of the funnel-type scraper 50, the diameter of the passing tube for the focusing bundle can be variably adjusted like an aperture to satisfy various dimensional specifications of various reinforcing bars.

In addition, the funnel-type focusing scraper 50 according to the present invention is configured to be rotatable in a direction (DW2) opposite to the rotation direction (DW1) of the rib spiral winding unit (13) by the reverse slow rotation operation unit (30). For example, as in the examples of FIGS. 2 and 3, if the rib spiral winding unit 13 rotates counterclockwise, the funnel-shaped focusing scraper 50 moves very slowly in the clockwise direction by the reverse slow rotation operation unit 30. Configure it to rotate.

As shown in FIG. 2, the reverse slow rotation operation unit 30 preferably includes a worm wheel 34 for detachably keying the funnel-shaped focus scraper 50, and a worm 32 geared to the worm wheel 34. It consists of a deceleration motor (36) that transmits reverse rotational force to the shaft of the worm (32).

The reverse slow rotation operation unit 30 rotates the funnel-shaped focusing scraper 50 in a rotation direction (DW2) opposite to the rotation direction (DW1) of the rib spiral winding unit 13 and simultaneously performs rib spiral winding. Rather than rotating the part 13, the glass fiber bundle 48 in the tube diameter of the focusing scraper 50, which is supported by the tight passage and compression force, is rotated at a relatively slow speed, so that the fiber bundle 48 is twisted at a rate of 0.1 TPI (Twist Per Inch) or less, as shown in Figure 4. The core material 51 of the same shape is made into a bundle 48 having a fine twisted shape.

An impregnation resin control mechanism unit ( The operation of 14) increases the bonding strength of the glass fiber yarns 42 constituting the core material 51 of the bundle 48 for reinforcing bars of the present invention and increases the adhesion strength with the ribs 52 surrounding the outer circumference of the bundle 48. It also increases the amount of thermosetting resin solution (46) used.

It is absorbed into the outer surface of the focusing bundle (48) due to the fine twisting effect of the focusing bundle (48) that is focused and densely passing through the funnel-shaped focusing scraper (50) rotating slowly in the reverse direction and the dense passing pressure force of the funnel-shaped focusing scraper (50). When the residual resin solution is removed, additional squeezing is performed to ensure that the impregnating resin remaining in the core material 51 of the focusing bundle 48 remains and is evenly distributed in the minimum amount while properly functioning as a binder. The residual resin liquid seeping out of the outer peripheral surface of ) exerts a similar impregnation effect on the ribs 52 surrounding the core material 51 passing through the focusing scraper 50.

In the present invention, the number of twists indicating the degree of twisting of the bundle 48 is 0.1 TPI (Twist Per Inch) or less. In the present invention, its critical significance lies in the fact that if the softness range exceeds 0.1 TPI, additional squeezing of the resin solution in the core material 51 becomes excessive.

Meanwhile, among the components of the impregnation resin control device in the present invention, the excess resin liquid recovery shelf 38 is located on the lower side of the funnel-shaped focusing scraper 50 and the primer resin wiping rod 29 of the impregnation resin control mechanism part 14. , the excess resin liquid flowing out from the focusing scraper 50, the initial resin wiping rod 29, or the rib spiral winding unit 13 and falling to the lower part of the focusing range is recovered. The excess resin liquid recovery shelf (38) is connected to the resin impregnation tank (44) by a passage, thereby allowing the recovered resin liquid to flow back into the resin impregnation tank (44).

The preliminary resin wiping rods (29) are located at the edge of the entrance where the glass fiber threads (42) are concentrated, and when the thermosetting resin liquid (46) used for impregnation is recovered to the excess resin liquid recovery shelf (38), it is in the air. As the exposed resin area (width of impregnated glass fiber yarn, area of resin dropped on the recovery shelf) is small, the volatilization amount of volatile components contained in the thermosetting resin liquid 46 is lowered, thereby improving the workplace environment.

In the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments, but by the claims and equivalents to the claims.

(10)-- Glass fiber yarn supply section (12)-- Resin impregnation section
(13)--Rib spiral winding part (14)--Impregnated resin control mechanism part
(18)-- Hardening section (20)-- Cooling section
(22)-- Drawing transfer unit (24)-- Cutting unit
(28a)(28b)(28c)(28d)-- Idle Roll (29)-- Primed Resin Wiping Stick
(30)-- Reverse slow rotation drive unit (32)-- Worm
(34)-- Worm wheel (36)-- Reduction motor
(38)-- Excess resin liquid recovery shelf (40)-- Bobbin
(42)-- Glass fiber yarn (44)-- Resin impregnation tank
(46)-- Thermosetting resin liquid (48)-- Bundle of bundles
(50)-- Funnel-type focus scraper (52)-- Rib
(60)-- Glass fiber reinforcement bar products

Claims (2)

In the impregnation resin control device in a glass fiber reinforcement bar manufacturing process facility equipped with a resin impregnation tank for impregnating a plurality of glass fiber yarns with a thermosetting resin solution and a rib spiral winding unit for spirally winding glass fiber yarns for ribs,
After passing through the resin impregnation tank and the rib spiral winding section, the resin-impregnated glass fiber yarns are collected into bundles for reinforcing bars using a funnel-type focusing scraper, and the thermosetting resin liquid penetrated into and between the glass fiber yarns is uniformly retained and An impregnated resin control mechanism that rotates the funnel-shaped converging scraper to allow the excess amount to be discharged to the outside, clean the outer peripheral surface, and improve the adhesion strength of the reinforcing bar, and
A rod body is placed in an up-down shape at the front entrance of the rib spiral winding section, and when the glass fiber yarns from the resin impregnation tank are concentrated and entered, the impregnated resin is wiped as a primer through the surface contact of the rod body and then entered into the rib spiral winding section. Bongwa,
It consists of an impregnation resin control mechanism and an excess resin liquid recovery shelf located on the lower side of the primer resin wipe rod and recovering excess resin liquid that falls below the focusing range;
The impregnation resin control mechanism part;
It is located at the rear of the rib spiral winding section and has a diameter that allows the passage of a glass fiber bundle that meets the dimensional specifications of the reinforcing bar. The jig can be replaced and installed, and the bundle is moved by the pressure and pressure applied to the outer surface during passage of the concentrated glass fiber yarns. A funnel-shaped concentrating scraper that removes excess resin seeping from the outer circumferential surface,
Rotate the funnel-shaped converging scraper in a direction opposite to the rotation direction of the rib spiral winding part and rotate it relatively slowly compared to the speed of the rib spiral winding part, so that the glass fiber focusing bundle in the converging scraper tube diameter supported by the tight passing pressure is 0.1 TPI (Twist). Per Inch) or less, an impregnated resin control device for manufacturing glass fiber reinforcement, characterized by consisting of a reverse slow rotation operation unit that allows twisting at or below.
The method of claim 1, wherein the reverse slow rotation operation unit,
A worm wheel that connects the funnel-type focused scraper with a key to make it removable,
A worm connected to a worm wheel and a gear,
An impregnated resin control device for manufacturing glass fiber reinforcement, characterized by consisting of a reduction motor that transmits reverse rotational force to the shaft of the worm.

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