TWM591104U - An equipment for producing fiber reinforced composite with more stable yarn spreading and resin impregnating abilities - Google Patents

Abstract

An equipment for improving the stability of fiber yarn spreading and resin impregnation, which comprises a powder impregnation tank and a thermal processing molding equipment arranged in sequence, wherein: the powder impregnation tank includes a barrel groove, which is arranged in the barrel A plurality of yarn spreading rods in the groove and a plurality of air intake holes provided at the bottom of the barrel groove; and the barrel groove is provided with a heating device and/or linked with a vibrating mechanism and/or a stirring device. The new type uses powder The body impregnation tank spreads and distributes the fiber yarn bundle. During the manufacturing process, the mechanical method of vibrating and/or stirring the barrel of the powder impregnation tank in a timely manner ensures that the resin powder can maintain a good fluidization effect, and at the same time Combined with heating means to adjust the humidity of the resin powder in the powder impregnation tank, the fluidization behavior can be continued and stabilized, and the effect of increasing the spread of the fiber yarn bundle and the coating amount of the resin powder can be stabilized and uniform.

Description

Device for improving fiber yarn bundle spreading stability and resin impregnation

A device for impregnating fiber yarn bundles with resin, especially a device that can improve the stability of the fiber yarn bundle spreading and its resin impregnation.

Fiber-reinforced resin is a compound material widely used today. Through the compound of resin and fiber, the strength and application of the resin are greatly increased. It is commonly used in various aviation, military, automotive, electronic or civilian products and supplies.

Among the fiber-reinforced composite materials, the most common type is carbon fiber or glass fiber-reinforced thermosetting resin composite materials. Because the thermosetting resin needs to be dissolved in the solvent during the manufacturing process, its fluidity is high, so the impregnation between the resin and the fiber Good performance and easy manufacturing process, it has been widely used in industry for a long time. However, with the rising awareness of environmental protection in modern society, a large number of volatile solvent hazards in the manufacturing process of thermosetting resin composite materials, unfinished products and scraps cannot be recovered, and thermosetting resins need to be frozen for storage and other problems, so thermoplastic resins have emerged Fiber-reinforced composite materials, which use thermoplastic resins to be recyclable, reprocessable and easy-to-preserve, have been partially replaced by thermosetting resin fiber-reinforced composite materials and are used in industries such as bicycles, automobiles, and sporting goods.

But on the other hand, the thermoplastic resin has poor melt flowability, so when making thermoplastic fiber reinforced composite materials, it is easy to have pores between the resin and the fiber due to poor impregnation, and these pores will become a commodity Defective material defects. In the process of unidirectional fiber prepreg (UD prepreg), the single fiber bundle is usually spread through the yarn spreading technology, so that the thermoplastic resin can be impregnated into the fiber to improve the impregnation, such as the Republic of China Patent No. I574831 and I655081 use a plurality of air inlet holes at the bottom of the impregnation tank to float and fluidize the powder, so that the powder impacts the yarn bundle and enters the fiber to generate appropriate friction, so that the yarn bundle expands, thereby allowing the resin to enter To the fiber, increase the impregnation between fiber and resin. However, the control technology of spreading stability will affect the spreading state of the fiber. If the spreading is incomplete or the spreading is stacked and overlapped, it will also lead to a decrease in the resin impregnation, and how to effectively and uniformly impregnate the thermoplastic resin The inter-fiber is also a big problem. Therefore, at this stage, it is necessary to provide a device and process that significantly improve the yarn spreading and impregnation of this fiber resin composite in the process.

In view of the current existing manufacturing technology of fiber-reinforced resin, especially for various problems such as poor impregnability and fiber spreadability, this new model provides an equipment for improving the stability of fiber bundle spreading and resin impregnation. It includes a powder impregnation tank and a hot processing molding device arranged in sequence, wherein: the powder impregnation tank includes a barrel groove, a plurality of yarn spreading rods arranged in the barrel groove and a bottom of the barrel groove Plural intake holes; the barrel tank is provided with a heating device and/or linked with a vibrating mechanism and/or with a stirring device; and the thermal processing molding device is a double steel belt hot press or a heating and pressure roller or contains at least 1. Heat the cluster die.

Wherein, the powder impregnation tank is further connected with an air extraction device, which is used to adjust the pressure inside the powder impregnation tank.

Wherein, the heated bundling die head includes a bundling die head, and the bundling die head includes at least a bundling retracting channel.

Wherein, the bundle winding channel has a tapered channel.

Wherein, a plastic molding die is further installed at the end of the bundle winding channel, and the molding die includes a smaller diameter than the bundle winding channel.

Among them, a cooling mechanism, an extraction mechanism and a cutting machine are further arranged after the heating and gathering die head.

Wherein, a heating oven is further arranged before and/or after the powder impregnation tank.

It can be seen from the above description that the present invention has the following advantages:

1. This new type uses a powder impregnation tank to spread and distribute fiber yarn bundles. During the manufacturing process, the mechanical method of vibrating and/or stirring the powder impregnation tank in a timely manner ensures that the resin powder can maintain a good fluid At the same time, it can be combined with heating means to adjust the humidity of the resin powder in the powder impregnation tank, so that its fluidization behavior can be continued and stabilized, and the effect of spreading the fiber yarn bundle and coating the resin powder can be uniform.

2. In addition to being applicable to single fiber yarn bundles, this new type is also suitable for spreading fabrics of multiple bundles of yarns, especially multiple bundles of yarns spreading at the same time, which is prone to hinder the fluidization behavior of resin powder after yarn spreading And the powder is easy to accumulate on the yarn bundle. By adjusting the tension of the yarn bundle and the appropriate spacing between the yarn bundles, and the function of heating, vibrating or stirring the new powder impregnation tank, the new type can simultaneously and stably deploy multiple bundles of yarn bundles . The volume of the powder impregnation tank equipment does not need to be too large to achieve a good effect of spreading yarn and fabric.

A preferred embodiment of a device for improving the stability of fiber yarn spreading and resin impregnation, please refer to FIG. 1, according to the requirements of the continuous process, the new type of device preferably includes a fiber creel 10 and a pre-treatment in sequence The heating oven 20, a powder impregnation tank 30, a post-processing heating oven 40, and a thermal processing molding device 50.

A fiber yarn bundle F, the fiber yarn bundle F may be a single fiber bundle or a plurality of fiber yarn bundles are first placed on the creel 10, the creel 10 is preferably provided with a plurality of adjustable guide rods ( (Not shown in the figure), the fiber yarn bundle F is placed on the adjustable guide rod to facilitate the yarn spreading processing of the subsequent device. The purpose of the creel 10 is to adjust the distance between the tension of the fiber yarn bundle F and the yarn bundle.

The fiber yarn bundle F from the creel 10 then enters the pre-treatment heating oven 20 to remove the slurry or moisture on the surface of the fiber yarn bundle F, so as to be used in the subsequent yarn spreading step, because it is generally commercially available The fiber yarn bundle, especially the surface of the carbon fiber, contains slurry. If the yarn is spread directly, it is easy to cause sticking, which makes the fiber yarn bundle F difficult to spread, which further affects the uniformity and thickness of the fiber yarn after the yarn is spread. Before spreading the cloth, remove the slurry and moisture on the surface of the fiber yarn bundle F to avoid affecting the spreading effect due to the relationship of the surface sizing agent. The pretreatment heating oven 20 may be, but not limited to, a hot air, electric hot plate, electric heating tube, or infrared lamp (IR lamp) type heating oven or desizing furnace. The pretreatment heating oven 20 of the present invention is not a necessary equipment, mainly depending on the type of the fiber yarn bundle F and the sizing agent it contains, or even the new type can adapt different brands and pulps adaptively The fiber yarn bundle F of the agent completely and partially removes the slurry and water vapor, which can affect the width of the subsequent yarn spread, and the width of the yarn spread affects the amount of resin powder in the fiber yarn bundle F, which can control different fiber yarns. The ratio of bundle F to the resin powder P.

Please refer to FIG. 2, the fiber yarn bundle F with the surface slurry and water vapor removed further enters the powder impregnation tank 30 to spread yarn and fabric. The powder impregnation tank 30 at least includes a barrel groove 31, a plurality of yarn spreading rods 33 disposed in the barrel groove 31, and a plurality of air inlet holes 35 disposed at the bottom of the barrel groove 31. Wherein, the barrel groove 31 is used to contain a resin powder P, preferably thermoplastic resin powder, and the plurality of yarn spreading rods 33 are preferably horizontally arranged on the groove side wall of the barrel groove 31, which is used to Spread the fiber bundle F into a plurality of fibers. A high-pressure gas supply source (not shown) injects a high-pressure gas G into the barrel groove 31 through the air inlet hole 35 to fluidize the resin powder P and distribute it to the fiber yarn bundle F spreading On the surface, the high-pressure gas supply source may be an air compressor. In addition, compared with the prior art that only the device provided with the tension roller (or guide rod or roller) in the powder barrel tank to achieve the effect of spreading the yarn, the present invention simply uses the tension roller (or guide rod or roller) Rod) because the resin powder in it is not flowing, it will cause a large resistance to the fiber yarn bundle, which is likely to cause serious friction between the resin powder/spreading guide rod/fiber yarn bundle, which is likely to cause fluffing and yarn breakage. And, as the resin powder is taken away by the fiber yarn bundle, the resin powder in the tank lacks powder or partially accumulates, causing uneven powder amount coated on the fiber yarn bundle. Therefore, in the present invention, the air inlet hole 35 is provided through the bottom of the powder impregnation tank 30, so that the resin powder P can be fluidized, and the resin powder P can be floated and fluidized to reduce the fiber yarn bundle F Resistance when entering the resin powder P, to avoid the yarn breakage caused by excessive friction of the fiber yarn bundle F, and the resin powder P fluidized by the high-pressure gas G will impact the fiber yarn bundle F and enter its Between the fibers, proper friction is generated to expand the fiber yarn bundle F, and when the resin powder P is taken away in the groove, the other resin powder P will immediately compensate for the lack of powder due to the fluidization relationship. The position of the fiber yarn bundle F is uniform at every place.

Further, the yarn spreading rod 33 can be preferably used to adjust the height of the fiber yarn bundle F in the groove of the barrel groove 31 according to the spreading of the fiber yarn bundle F and the cloth during the yarn spreading process. The tension of bundle F makes the effect of spreading yarn and fabric better.

The barrel groove 31 is preferably linked with a vibration mechanism 37. For example, the barrel groove 31 is arranged on a vibration platform, so that the barrel groove 31 can generate vibration when the resin powder P is filled and the high-pressure gas G is injected. To reduce the tunneling effect and accumulation phenomenon of the resin powder P, continue to maintain the fluidization effect of the resin powder P, and promote the resin powder P to be distributed on the surface of the fiber yarn bundle F. On the other hand, in addition to the aforementioned method of generating vibration through the vibration mechanism 37 to reduce the powder tunneling effect and the accumulation phenomenon, the resin powder P can also be stirred by a stirring device (not shown) to achieve the same purpose. In addition, in order to maintain the low moisture content of the resin powder P, reduce moisture absorption and moisture regain, avoid its agglomeration and affect the situation of the cloth, and the quality of the semi-finished product produced by the process, the barrel tank 31 can be heated by a heating device or The high-pressure gas G after heating is filled to maintain a low water content state. The aforementioned so-called heating device is preferably a gas heating mechanism, such as a fin-type electric heating tube. Furthermore, the present invention can further adjust the air pressure in the barrel tank 31 through an air extraction device (not shown) after the barrel tank 31 is capped, for example, to maintain the negative pressure state in the barrel tank 31, in addition to reducing In addition to the pollution of the dust of the resin powder P to the environment, the air pressure in the powder impregnation tank 30 and the direction of stable air flow can be balanced so that the resin powder P that has been coated on the fiber yarn bundle F is not affected Blowing down causes fabric failure or powder loss.

The fiber yarn bundle F coming from the powder impregnation tank 30 and spread by the spreading yarn and the cloth further enters the post-processing heating oven 40 for heating, and the resin powder distributed on the surface of the fiber yarn bundle F can be temporarily fixed temporarily Body P, so that the resin powder P will not fall due to contact or shock in subsequent equipment, affecting the effectiveness of the cloth. The post-processing heating oven 40 may be, but not limited to, a hot air, electric hot plate, electric heating tube, or infrared lamp (IR lamp) type heating oven. Similarly, the post-processing heating oven 40 of the present invention is not a necessary equipment, and the installer can set it according to the needs of the situation to increase the cloth effect of the resin powder P.

Next, the fiber yarn bundle F further enters the thermal processing and molding device 50 to be processed and molded. There are two preferred embodiments of the thermal processing and molding device 50 of the present invention. First, please refer to FIG. 3, the first preferred embodiment is that the thermal processing and molding device 50 includes a heated bundling die, which is mainly used to add the fiber yarn bundle F after the above-mentioned spreading yarn and cloth. The winding is a cylindrical wire, and the cylindrical wire is preferably a cylindrical or elliptical cylindrical solid wire. The heating bundling die may have a plurality of fiber bundles for receiving the aforementioned fiber bundle F, for example, when the fiber bundle F is a multi-bundle yarn bundle, it enters each of the heating bundle molds when it spreads the yarn and the cloth to a set degree, respectively The head is rolled up to the columnar wire. The heated bundling die of this embodiment includes a bundling die 51 and a molding die 53. The bundling die 51 includes at least a bundling retracting channel 511. The bundling retracting channel 511 preferably has a tapered shape The inner diameter channel, which gradually reduces the diameter from the entrance end to the exit end of the fiber yarn bundle F, can further improve the resin impregnation of the fiber yarn bundle F; and the molding die 53 can further have the bundle roll relative to the aforementioned The smaller diameter of the exit end of the collecting channel 511 can achieve the regulation of the diameter of the fiber yarn bundle F wound into a cylindrical wire. In addition, the bundling die 51 is preferably of a structural design that can be opened and closed, so that the bundling and winding channel 511 can be exposed and cleaned, so as to prevent the resin from remaining in the channel and affecting the appearance or quality of the columnar wire.

Further, in this preferred embodiment, after being formed into a columnar wire, the columnar wire can be cut into fiber-containing resin particles by a cutting machine after being cooled, and becomes a fiber resin master for subsequent processing into other products Grain use. Among them, the cutting step is preferably provided with a cooling mechanism (such as a cooling fan) and an extraction mechanism (such as a clamping wheel) in front of the cutting machine to achieve a feasible solution.

The second preferred embodiment of the thermal processing and molding device 50 of the present invention is a double steel belt hot press or a heating and pressure roller, which is mainly used to roll the fiber yarn bundle F after the aforementioned yarn spreading and cloth distribution Press and shape into a piece of wood. Finally, a roll-up device (not shown) is provided after the thermal processing and molding device 50 of this embodiment to roll up the sheet for subsequent transportation or processing.

The present invention corresponds to the aforementioned device for improving the stability of fiber yarn spreading and resin impregnation. The following provides a method for improving the stability of fiber yarn spreading and resin impregnation. The steps include: Step S1: Submerging the aforementioned fiber yarn bundle F into the fluidized resin powder P contained in the powder impregnation tank 30; Step S2: heating the powder impregnation tank 30 and/or shaking and/or agitating the powder impregnation tank 30 to maintain the fluidized state of the resin powder P; Step S3: the powder impregnation tank 30 spreads the fiber yarn bundle F and impregnates the resin powder P on the surface of the fiber yarn bundle F; and Step S4: The fiber bundle F after the yarn spreading is thermally formed.

Among them, the material of the fiber yarn bundle F used in the present invention preferably includes carbon fiber, glass fiber, flax fiber or nylon fiber.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the new model. Any equivalent changes or modifications made without departing from the spirit disclosed by the new model should be included in the claims of the new model. Within range.

10‧‧‧ fiber creel 20‧‧‧Pretreatment heating oven 30‧‧‧Powder impregnation tank 31‧‧‧Bucket 33‧‧‧Spreading rod 35‧‧‧Air inlet 37‧‧‧ Vibration mechanism 40‧‧‧Post-processing heating oven 50‧‧‧Hot processing molding device 51‧‧‧ Bundle Die 511‧‧‧Bundle winding channel 53‧‧‧Modeling die head F‧‧‧fiber tow P‧‧‧Resin powder G‧‧‧High pressure gas

Figure 1 is a schematic diagram of a new type of equipment for improving the stability of fiber yarn spreading and resin impregnation. FIG. 2 is a schematic diagram of a preferred embodiment of the new powder impregnation tank. FIG. 3 is a schematic view of the heating cluster die head of the first preferred embodiment of the new thermal processing molding device.

10‧‧‧ fiber creel

20‧‧‧Pretreatment heating oven

30‧‧‧Powder impregnation tank

40‧‧‧Post-processing heating oven

50‧‧‧Hot processing molding device

F‧‧‧fiber tow

Claims (7)

An equipment for improving the stability of fiber yarn bundle spreading and resin impregnation, which comprises a powder impregnation tank and a thermal processing molding device arranged in sequence, wherein: The powder impregnation tank includes a barrel groove, a plurality of yarn spreading rods arranged in the barrel groove and a plurality of air inlet holes arranged at the bottom of the barrel groove; The barrel tank is provided with a heating device and/or linked with a vibration mechanism and/or with a stirring device; and The hot-working forming device is a double steel belt hot press or a heating and pressing roller or contains at least one heating bundling die. For example, the equipment for improving the stability of fiber yarn spreading and resin impregnation in item 1 of the patent application scope, the powder impregnation tank is further connected to an air extraction device, which is used to adjust the inside of the powder impregnation tank pressure. For example, in the device for improving the fiber yarn spreading stability and resin impregnation of item 1 of the patent application scope, the heated bundling die head includes a bundling die head, and the bundling die head includes at least one bundling winding channel. For example, the equipment for improving the stability of fiber yarn spreading and resin impregnation in item 3 of the patent application scope, the bundle winding channel has a tapered channel. If the equipment for improving the stability of the fiber yarn spreading and resin impregnation in the patent application item 3 or 4 is added, a plastic die is further installed at the end of the bundle winding channel, and the plastic die includes a The diameter of the coil channel is smaller. For example, the equipment for improving the stability of fiber yarn spreading and resin impregnation in item 4 of the patent application scope is further provided with a cooling mechanism, a drawing mechanism and a cutting machine after the heating and gathering die. For example, in the application of items 1, 2, 3, 4, 5 or 6 to improve the stability of fiber yarn spreading and resin impregnation, a heating oven is further provided before and/or after the powder impregnation tank.

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