CN203821019U - Ultrasonic tow-spreading and starching mechanism - Google Patents

Abstract

The utility model provides an ultrasonic stretching and sizing mechanism, which includes an active unwinding roller, a first tensioning wheel, a second tensioning wheel and an active winding roller, and also includes a box body with an inner cavity, and the box body is provided with A plurality of auxiliary rollers that cooperate with each other to make the fiber tow meander and slide through the inner cavity of the box. Ultrasonic vibration sources are symmetrically arranged on the left and right inner walls of the box. The bottom of the box is equipped with a heating device. The side walls of the box are arranged There is a slurry replenishing nozzle that injects slurry into the cavity of the box body. After the fiber tow slides through the active feeding roller, the first tensioning pulley, the auxiliary roller, and the second tensioning pulley, it is wound up in the active winding roll. The utility model overcomes the difficulties of low effectiveness of current mechanical spreading and sizing, and relatively high reject rate, not only realizes the effective balance of spreading and sizing, but also enables the two processes of spreading and sizing to be carried out at the same time, greatly improving production efficiency .

Description

An ultrasonic spinning and sizing mechanism

technical field

The utility model relates to a mechanism for widening fiber tows and simultaneously coating the tows with slurry, which belongs to the field of tow widening and sizing .

Background technique

In the field of high-end fiber composite material manufacturing, in order to improve the interface performance between fiber material and matrix material, fiber tow widening technology is often used to make the fiber and matrix material have a larger contact area. Tow widening is mostly done by mechanical rolling. The mechanical rolling method has the advantages of simple equipment, but the width of the stretching is relatively limited, and it completely relies on the extrusion force perpendicular to the tow to spread the filaments; currently, the tow sizing is mostly the hot melt infiltration method. The powder coating method has the advantages of simple equipment, but the problem of uneven sizing effect is prominent, and it is difficult to form an ideal wetting effect for thermoplastic substrates.

To sum up, the current method of spinning and sizing makes the surface quality of the tow defective, which affects the subsequent processing and ultimately affects the quality of the product

Liang Lejia proposed ultrasonic spinning in patent CN201120183329. This method differs in the following ways:

1. The utility model integrates sizing and spreading in one process, which shortens the production process

2. The utility model introduces a slurry replenishing nozzle to control the amount of sizing

3. The utility model introduces the tension wheel [6] to control the tension of the tow, and applies pressure to the widened tow, which greatly improves the shrinkage of the tow after it comes out of the fluid.

Utility model content

In order to overcome the problem of high product waste rate caused by uneven width of tow in the process of spreading and sizing, the utility model provides a spreading and sizing mechanism based on the principle of ultrasonic vibration to achieve uniform and effective spreading and sizing. Reduce the effect of wounding silk.

In order to solve the above problems, the utility model adopts the following technical solutions:

An ultrasonic spreading and sizing mechanism, including an active wire-releasing roller, a first tension wheel, a second tension wheel and an active take-up roller, and a box body with an inner cavity, and the box body is provided with a plurality of mutually cooperating The fiber tow is meandering and sliding through the auxiliary roller of the inner cavity of the box. Ultrasonic vibration sources are arranged symmetrically on the left and right inner walls of the box. The bottom of the box is equipped with a heating device. The side walls of the box are provided with A slurry supplement nozzle injecting slurry into the cavity, the fiber tow slides through the active pay-off roller, the first tension pulley, the auxiliary roller, and the second tension pulley, and then is wound up on the active take-up roll.

Further, the rotational speeds of the active pay-off roll and the active take-up roll are adjustable.

Further, the first tensioning wheel and the second tensioning wheel both include cylinder pressure rollers and small auxiliary rollers that can be squeezed against each other.

Further, the heating device is a thermocouple heater.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model overcomes the difficulties of low effectiveness of current mechanical spreading and sizing, and relatively high reject rate, not only realizes the effective balance of spreading and sizing, but also enables the two processes of spreading and sizing to be carried out at the same time, greatly improving production efficiency .

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a three-dimensional schematic diagram of the box body and its internal mechanism of the embodiment of the utility model.

In the figure: 1-Active feeding roller; 2-First tensioning wheel; 3-Slurry replenishment nozzle; 4-Second tensioning wheel; 5-Active winding roller; 6-Box body; 7-Auxiliary roller; 8-heating device; 9-slurry; 10-ultrasonic vibration source; 11-fiber tow.

Detailed ways

The purpose of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific examples. The examples cannot be repeated here one by one, but the implementation of the utility model is not therefore limited to the following examples.

As shown in Fig. 1 and Fig. 2, an ultrasonic spreading and sizing mechanism includes an active unwinding roller 1, a first tensioning pulley 2, a second tensioning pulley 4 and an active winding take-up roller 5, and is characterized in that: it also includes There is a box body 6 with an inner cavity. The box body 6 is provided with a plurality of auxiliary rollers 7 that cooperate with each other to make the fiber tow 11 meander and slide through the inner cavity of the box body 6, so as to extend the fiber tow 11 in the slurry 9. The infiltration time is long, and it also has the function of assisting in finishing the fiber tow 11. The ultrasonic vibration source 10 is symmetrically arranged on the left and right inner walls of the box body 6, and the bottom of the box body 6 is provided with a heating device 8. In this embodiment, a thermocouple is used for heating. The device can keep the slurry at a specific temperature; the side wall of the box body 6 is provided with a slurry replenishing nozzle 3 that injects the slurry 9 into the cavity of the box body 6, and the necessary steps can be performed according to the sizing situation of the fiber tow 11. Replenish.

The fiber tow 11 slides through the active wire-releasing roller 1 , the first tensioning pulley 2 , the auxiliary roller 7 and the second tensioning pulley 4 , and is wound up on the active winding-up roller 5 .

Further, the rotational speeds of the active pay-off roll 1 and the active take-up roll 5 are adjustable to control the amount of sizing.

Further, the first tensioning wheel 2 and the second tensioning wheel 4 both include cylinder pressure rollers and small auxiliary rollers that can be squeezed each other, and can also apply pressure to the sized fiber tow 11 in addition to adjusting the tension. With a certain pressure, the slurry in the fiber tow 11 can be further evenly distributed and shrinkage caused by tension can be effectively avoided.

After the fiber tow 11 passes through the active feeding roller 1 and the first tensioning wheel 2, it enters the box body 6 with almost no tension. Under the action of the heating device 8 and the ultrasonic vibration source 10, it becomes fluid after being heated. The slurry 9 oscillates at a high frequency and produces a straight wave, so that the fiber tow 11 that has just entered the box body 6 is effectively widened by a strong vibration. After the sizing is finished, after the second tensioning wheel 4 further balances the distribution of the slurry, the fiber tow 11 is wound up by the active winding roller 5 .

This embodiment overcomes the difficulties of low effectiveness of current mechanical spinning and sizing, and relatively high reject rate. Not only the effective balance between spreading and sizing is realized, but also the two processes of spreading and sizing are carried out at the same time, which greatly improves the production efficiency.

The above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (4)

1. An ultrasonic spreading and sizing mechanism, comprising an active unwinding roller (1), a first tensioning wheel (2), a second tensioning wheel (4) and an active winding roller (5), characterized in that: It includes a box body (6) with an inner cavity, and the box body (6) is provided with a plurality of auxiliary rollers (7) that cooperate with each other to make the fiber tow (11) meander and slide through the inner cavity of the box body (6), Ultrasonic vibration sources (10) are arranged symmetrically on the left and right inner walls of the box (6), the bottom of the box (6) is provided with a heating device (8), and the side walls of the box (6) are provided with (6) The slurry replenishing nozzle (3) of the slurry (9) is injected into the cavity, and the fiber tow (11) slides through the active wire releasing roller (1), the first tensioning wheel (2), the auxiliary roller (7), after the second tensioning wheel (4), wind up on the active winding roller (5). 2. The ultrasonic spreading and sizing mechanism according to claim 1, characterized in that: the rotational speeds of the active pay-off roller (1) and the active take-up roller (5) are adjustable. 3. The ultrasonic spreading and sizing mechanism according to claim 2, characterized in that: the first tensioning wheel (2) and the second tensioning wheel (4) both include cylinder pressure rollers that can be squeezed each other, small auxiliary roller. 4. The ultrasonic spinning and sizing mechanism according to claim 2, characterized in that: the heating device (8) is a thermocouple heater.