WO2016078494A1

WO2016078494A1 - Guide pultrusion die for i-shaped glass fibre reinforced plastic sections

Info

Publication number: WO2016078494A1
Application number: PCT/CN2015/092071
Authority: WO
Inventors: 顾建
Original assignee: 南通久盛新材料科技有限公司
Priority date: 2014-11-18
Filing date: 2015-10-16
Publication date: 2016-05-26
Also published as: CN104385632A; CN104385632B

Abstract

Disclosed in the present invention is a guide pultrusion die for I-shaped glass fibre reinforced plastic sections, comprising a main body, a fixing block disposed on one end of the main body, a mounting valve disposed on one end of the fixing block, the fixing block being connected to a fixing frame of the main body by means of a plurality of support frames, a first mounting plate and a second mounting plate disposed on the upper surface of the fixing frame, a first guide plate disposed on the first mounting plate, a first through-hole disposed on the first guide plate, a second guide plate disposed on the second mounting plate, a second through-hole disposed on the second guide plate, the first guide plate and the second guide plate being disposed on a central column, the central column extending into a pultrusion system at the other end of the main body, a transverse groove and a vertical groove disposed at the point of contact of the central column and the pultrusion system, a plurality of electric heating holes disposed on the upper surface and the lower surface of the pultrusion system, and a pressurising block disposed within the pultrusion system; the present invention has the following advantages: rational structure, convenient to transport, high safety coefficients and low costs, high working efficiency, not easily damaged, and able to uniformly heat the die.

Description

I-shaped FRP profile guiding pultrusion die

Technical field

The present invention relates to a mold, and more particularly to an I-shaped FRP profile guiding pultrusion die.

Background technique

FRP is a glass fiber reinforced plastic, commonly known as FRP (Fiber Reinforced Plastics), which is a fiber reinforced composite plastic. According to the different fibers used, it is divided into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic and so on.

It is a composite material of glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as a reinforcing material and synthetic resin as a base material. The fiber reinforced composite material is composed of reinforcing fibers and a matrix. The diameter of the fiber (or whisker) is very small, generally below 10 μm, the defect is small and small, and the strain at break is about 30 parts per thousand. It is a brittle material and is easily damaged, broken and corroded. The matrix has much lower strength and modulus than the fiber, but it can withstand large strains, often has viscoelasticity and elastoplasticity, and is a ductile material.

Because of the variety of resins used, it is called polyester fiberglass, epoxy glass reinforced plastic, and phenolic glass reinforced plastic. Light and hard, non-conductive, high mechanical strength, low recycling, corrosion resistance. Machine parts and automobiles, ship casings, etc. can be manufactured instead of steel.

The Chinese patent discloses a curved profile pultrusion die comprising an upper die and a lower die. The upper die is provided with bumps on both sides thereof, and the bumps are respectively connected with a left upper die and a right upper die through the positioning pins, the upper die, the upper left die and the upper right After the mold is combined, a vertical groove is formed, and the lower mold and the upper left mold and the upper right mold are connected by a positioning pin, and the surface of the lower mold is a curved surface, and the lower mold is combined with the upper mold, the upper left mold and the upper right mold to form a curved groove, and the upper mold is formed. The lower mold is provided with heating holes; the curved profile pultrusion die of the invention has the following advantages: the structure is reasonable, the mold is heated uniformly, the transportation is convenient, the safety factor is high, the cost is low, the work efficiency is high, and the damage is not easy.

The Chinese patent discloses a mold for pultruding a hollow sheet profile, including an upper mold and a lower mold, One side of the mold is provided with a fixing frame, and a plurality of heating tubes are arranged in the fixing frame. One end of the heating tube extends into the upper mold, and a plurality of modules placed side by side are arranged in the lower mold, and heating holes are arranged in each module. The heating pipe and the module are arranged at a 90-degree staggered space; the mold for pultruding the hollow plate profile of the invention has the following advantages: the structure is reasonable, the heating of the mold is uniform, the transportation is convenient, the safety factor is high, the cost is low, the work efficiency is high, and the work is difficult. damage.

The advantages of FRP are: light weight and high strength. The relative density is between 1.5 and 2.0, only 1/4 to 1/5 of carbon steel, but the tensile strength is close to or even higher than that of carbon steel, and the specific strength can be compared with high-grade alloy steel. As a result, it has achieved excellent results in aerospace, rockets, spacecraft, high-pressure vessels, and other applications that require reduced weight. Some epoxy FRPs have tensile, bending and compressive strengths of more than 400 MPa. preservative. FRP is a good anti-corrosive material with good resistance to atmospheric, water and general concentrations of acids, bases, salts and a variety of oils and solvents. It has been applied to all aspects of chemical corrosion protection and is replacing carbon steel, stainless steel, wood, non-ferrous metals and so on. Good electrical performance. It is an excellent insulating material used to make insulators. Good dielectric properties are still protected at high frequencies. It has good microwave permeability and has been widely used in radomes. Good thermal performance. FRP has a low thermal conductivity, which is 1.25 to 1.67 kJ/(m·h·K) at room temperature, and is only 1/100 to 1/1000 of metal. It is an excellent thermal insulation material. In the case of instantaneous ultra-high temperature, it is an ideal thermal protection and ablation resistant material, which can protect the spacecraft from high-speed airflow at 2000 °C. Designable. (1) Various structural products can be flexibly designed according to needs to meet the requirements of use, and the products can be well integrated. (2) The material can be fully selected to meet the performance of the product, such as: can be designed to resist corrosion, resistant to transient high temperature, the product has a particularly high strength in a certain direction, good dielectric properties, and so on. Excellent processability. (1) The molding process can be flexibly selected according to the shape, technical requirements, use and quantity of the product. (2) The process is simple, it can be molded at one time, and the economic effect is outstanding, especially for products with a complicated shape and less forming, and the process superiority is more prominent.

The disadvantage of FRP is that the modulus of elasticity is low. The elastic modulus of FRP is twice as large as that of wood, but 10 times smaller than steel (E=2.1E5). Therefore, it is often insufficient in rigidity and easily deformed in the product structure. It can be made into a thin shell structure, a sandwich structure, or it can be compensated by high modulus fibers or reinforcing ribs. Long-term temperature resistance is poor. Generally, FRP can not be used for a long time at high temperature. The strength of general-purpose polyester FRP is obviously lower than 50 °C, and it is generally only used below 100 °C; the general-purpose epoxy FRP is above 60 °C, and the strength is obviously decreased. However, it is possible to select a high temperature resistant resin so that a long-term operating temperature of 200 to 300 ° C is possible. Aging phenomenon. Aging is a common defect of plastics, and FRP is no exception. It is easy to cause performance degradation under the influence of ultraviolet light, sand, rain, snow, chemical medium and mechanical stress. Low shear strength. The interlaminar shear strength is borne by the resin, so it is very low. The adhesion between layers can be improved by selecting a process, using a coupling agent, etc., and most importantly, avoiding shearing between layers during product design. The production methods of FRP are basically divided into two categories, namely wet contact type and dry press forming. According to the characteristics of the process, there are hand lay-up, lamination, RTM, pultrusion, compression molding, and winding molding. Hand lay-up includes hand lay-up, bag press, spray, wet paste low pressure and moldless paste.

Summary of the invention

The object of the present invention is to overcome the above limitations, thereby providing an I-shaped FRP profile guiding pultrusion die with reasonable structure, uniform heating of the mold, convenient transportation, high safety factor, low cost, high working efficiency and not easy to be damaged.

The object of the present invention is achieved by the following technical solution: an I-shaped FRP profile guiding pultrusion die, comprising a main body, one end of the main body is provided with a fixing block, and one end of the fixing block is provided with a mounting valve, and the fixing block passes through The plurality of support frames are connected to the fixing frame of the main body, the upper surface of the fixing frame is provided with a first mounting plate and a second mounting plate, and the first mounting plate is provided with a first guiding plate, the first guiding plate a first through hole is disposed on the second mounting plate, a second guiding plate is disposed on the second mounting plate, and the second guiding plate is provided with a second through hole, wherein the first guiding plate and the second guiding plate are disposed therein On the column, the middle column extends into the interior of the pultrusion system at the other end of the main body, and the contact between the center column and the pultrusion system is provided with a transverse groove and a vertical groove, and the upper surface and the lower surface of the pultrusion system are provided An electric heating hole is provided, and a pressing block is arranged inside the pultrusion system.

Preferably, a plurality of drain tanks are provided on the center pillar on both sides of the main body.

Preferably, the fixing block is provided with a plurality of bolt holes.

Preferably, the first guide plate is bolted to the first mounting plate.

Preferably, the first through holes are arranged in a line, and the second through holes are arranged in a circle.

In summary, the I-shaped FRP profile guiding pultrusion die of the invention has the following advantages: the structure is reasonable, the mold is heated uniformly, the transportation is convenient, the safety factor is high, the cost is low, the work efficiency is high, and the damage is not easy.

DRAWINGS

Figure 1 is a schematic view of the I-shaped FRP profile guiding pultrusion die of the present invention;

Numbers in the figure: 1-body, 2-fixed block, 3-mounting valve, 4-support frame, 5-fix frame, 6-first mounting plate, 7-second mounting plate, 8-first guide plate, 9 - first through hole, 10 - second guide plate, 11 - second through hole, 12 - center column, 13 - pultrusion system, 14 - transverse groove, 15 - vertical groove, 16 - electric heating hole, 17 - plus Briquetting, 18-leaf tank.

detailed description

The invention will be further described in detail with reference to the embodiments and the accompanying drawings, which are to be construed as illustrative only.

As shown in FIG. 1 , an I-shaped FRP profile guiding pultrusion die comprises a main body 1 , and one end of the main body 1 is provided with a fixing block 2 , and one end of the fixing block 2 is provided with a mounting valve 3 , and the fixing block 2 passes through a plurality of supporting frames 4 . The first mounting plate 6 and the second mounting plate 7 are disposed on the upper surface of the fixing frame 5, and the first guiding plate 8 is disposed on the first mounting plate 6. The first guiding plate 8 is disposed on the first mounting plate 8. There is a first through hole 9, a second guiding plate 10 is disposed on the second mounting plate 7, and a second through hole 11 is disposed on the second guiding plate 10. The first guiding plate 8 and the second guiding plate 10 are disposed on the center column. 12, the middle column 12 extends into the pultrusion system 13 at the other end of the main body 1, and the horizontal column 14 and the vertical groove 15 are provided at the contact of the center column 12 with the pultrusion system 13, and the upper surface and the lower surface of the pultrusion system 13 are provided. There are a plurality of electric heating holes 16, and a squeezing system 13 is provided inside the pultrusion system 13.

A plurality of drain tanks 18 are provided on the center pillar 12 on both sides of the main body 1.

The fixing block 2 is provided with a plurality of bolt holes.

The first guide plate 8 is bolted to the first mounting plate 6.

The first through holes 9 are arranged in a line shape, and the second through holes 11 are arranged in a circular shape.

The applicant further clarifies that the implementation method and the device structure of the present invention are described by the above embodiments, but the present invention is not limited to the above embodiments, and does not mean that the present invention must be implemented by relying on the above methods and structures. It is to be understood by those skilled in the art that the present invention is intended to be equivalent to the alternatives, the alternatives, and the steps of the present invention.

The present invention is not limited to the above embodiments, and all the modes in which the present invention is constructed by a similar structure and method of the present invention are within the scope of the present invention.

Claims

An I-shaped FRP profile guiding pultrusion die comprises a main body (1), characterized in that: one end of the main body (1) is provided with a fixing block (2), and one end of the fixing block (2) is provided with a mounting valve ( 3), the fixing block (2) is connected to the fixing frame (5) of the main body (1) through a plurality of supporting frames (4), and the first mounting plate (6) is disposed on the upper surface of the fixing frame (5) And a second mounting plate (7), the first mounting plate (6) is provided with a first guiding plate (8), and the first guiding plate (8) is provided with a first through hole (9), The second mounting plate (7) is provided with a second guiding plate (10), and the second guiding plate (10) is provided with a second through hole (11), the first guiding plate (8) and the The second guide plate (10) is disposed on the center pillar (12), and the middle pillar (12) extends into the inside of the pultrusion system (13) of the other end of the main body (1), the middle pillar (12) and the pultrusion system ( 13) The contact portion is provided with a lateral groove (14) and a vertical groove (15), and the upper surface and the lower surface of the pultrusion system (13) are respectively provided with a plurality of electric heating holes (16), the pultrusion system ( 13) A pressurizing block (17) is provided inside.
The I-shaped FRP profile guiding pultrusion die according to claim 1, wherein the center pillar (12) is provided with a plurality of sump (18) on both sides of the main body (1).
The I-shaped FRP profile guiding pultrusion die according to claim 1, wherein the fixing block (2) is provided with a plurality of bolt holes.
A I-beam-type FRP profile guiding pultrusion die according to claim 1, characterized in that the first guiding plate (8) is connected to the first mounting plate (6) by bolts.
The I-shaped FRP profile guiding pultrusion die according to claim 1, wherein the first through holes (9) are arranged in a line, and the second through holes (11) are arranged in a circle. .