CN104495513A - A glass fiber winding creel with tangential decompression of raw filaments - Google Patents

Abstract

The invention discloses a glass fiber winding creel, which comprises a yarn guide mechanism and more than one paying-off unit; the paying-off unit comprises a speed regulating motor and a protofilament expansion cylinder; the speed regulating motor drives the protofilament to expand a barrel to rotate and withdraw yarns, protofilaments on the protofilament expansion barrel are led out along the tangential direction of the protofilament expansion barrel and are guided to the positive direction by the yarn guide mechanism, and then the protofilaments are plied and wound on the winder head. The invention can effectively eliminate twisting phenomenon when the protofilament is axially released from the protofilament barrel, realizes protofilament untwisting and bundling, improves the uniformity and consistency of the tension of the protofilament, and improves the banding of untwisted yarn and the wetting and soaking performance of resin.

Description

A glass fiber winding creel with tangential decompression of raw filaments

technical field

The invention relates to the application field of glass fiber manufacturing technology, in particular to a device for actively rotating and retracting a glass fiber winding production raw silk cylinder along a tangential direction.

Background technique

The existing raw silk unwinding frame for glass fiber winding includes: a raw silk placement layer, a yarn guide, a tensioner, and a yarn break automatic stop. The creel has the following disadvantages in application: the raw yarn is unwound in the axial direction, and each untwisted turn produces a twist, and the yarn is twisted after plying, which affects the banding of the roving and the wetting of the resin and soaking; the range of the tensioner to adjust the tension is limited, and the phenomenon of elastic strands is easy to occur after the original silk is plied; the tensioner has more than seven sliding friction points, too many bending points, and the bending angle is too large, which will cause great damage to the original silk There are mainly two types of automatic stop for yarn breakage: mechanical and photoelectric. For these two kinds of automatic stop for yarn breakage, if there is wool in the detection channel of the original yarn, the automatic stop for yarn breakage will lose its function, resulting in missing strands.

Contents of the invention

The technical problem to be solved by the present invention is that the existing yarn creel adopts axial unwinding, and the yarn is prone to torsion after plying; the existing creel adopts a tensioner, which has a small adjustment range, prone to elastic strands, and multiple sliding frictions , There are many bending points, which are easy to cause damage to the original silk; the way of self-stopping when the yarn is broken will not be found because the wool is blocked, resulting in missing strands.

In order to solve the above-mentioned technical problems, the solution adopted in the present invention is: a glass fiber winding creel, including a yarn guide mechanism and more than one pay-off unit; The high-speed motor drives the raw yarn expansion drum to rotate and unwind the yarn. The raw yarn on the raw yarn expansion drum is drawn out along the tangential direction of the raw yarn expansion drum and guided by the yarn guide mechanism, then plied and wound onto the winder head.

The speed-regulating motor is used to make the raw yarn expansion drum actively rotate, and then the raw yarn is actively retreated along the tangential direction of the raw yarn expansion drum, so that there will be no torsion during axial unwinding, and the production of roving is fundamentally eliminated. The problem of twisting in the process and the waste of tail yarn.

Further, the yarn guiding mechanism includes a yarn releasing positioning wheel and a yarn receiving positioning wheel, and the yarn releasing positioning wheel is perpendicular to the outer common tangent of the raw silk expansion drum. By setting two positioning wheels to guide the running direction of the raw silk and provide a certain pulling force for the raw silk, the structure is simple and easy to manufacture, and because no tensioner is used, the friction points in the process of the raw silk decompression are reduced, and the raw silk is weakened. The degree of damage to the wire.

In order to realize the self-stop function of yarn breakage, the pay-off unit is also provided with a tension detection mechanism, which is arranged between the yarn-releasing positioning wheel and the yarn-receiving positioning wheel, and includes an angle sensor, a swing lever and a movable roller; One end is a positioning end, on which an angle sensor is set, the other end of the swing rod is a free end, on which a movable roller is set, the signal input end of the angle sensor detects the swing angle of the swing rod, and the signal output end is connected to the control end of the speed regulating motor And control the speed of the speed regulating motor. The movable roller is placed on the raw yarn between the yarn release positioning wheel and the yarn receiving positioning wheel. When the tension on the raw yarn is large, the movable roller is supported by a large force and will be held up, thereby driving the swing rod to rotate. When the tension on the raw silk decreases, the supporting force received by the movable roller is small, and under the influence of its own gravity, it will fall back, so that the pendulum will rotate in the direction of natural drooping. When the raw silk expands the cylinder When the retreating speed of the raw silk on the doubling reel is the same as the winding speed of the raw silk on the doubling reel, the force received by the movable roller is constant, and the pendulum will stay at an angle. Therefore, the pendulum is detected by setting the angle sensor The rotation angle of the rod, and feedback to the controller of the speed-regulating motor in time, can control the speed of the speed-regulating motor of the raw yarn drum in real time, so that the tension of the raw yarn can be kept constant; the tension detection mechanism can also have the function of yarn breakage measurement. When yarn breakage occurs in the fiber winder system, that is, the original yarn loses its tension, at this time the pendulum quickly falls back to the vertical position, and all speed-regulating motors immediately stop the whole machine, and the original yarn expansion drum continues to rotate and feed yarn without inertia Phenomenon; when the winding length reaches the fixed length, the speed regulating motor also realizes the complete machine stop.

Further, the yarn guiding mechanism also includes matching rollers, and the matching rollers, the yarn releasing positioning wheel and the yarn receiving positioning wheel are arranged in a triangle. Setting the matching roller, although the bending point of the original wire direction is increased, can provide a more stable supporting force for the movable roller, making the tension detection more accurate.

The invention has the following beneficial effects: it can effectively eliminate the phenomenon of random twisting of the raw silk when it retreats from the raw silk cylinder, realize the untwisted bundling of the raw silk, improve the uniformity and consistency of the tension of the raw silk at the same time, and improve the untwisted Yarn tape formation and resin wetting and soak-through properties.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

As shown in Fig. 1, the present invention includes a yarn guide mechanism and more than one pay-off unit; the pay-off unit includes a speed-regulating motor and a raw silk expansion drum 1; the speed-regulating motor drives the raw silk expansion drum 1 to rotate and unwind the yarn, and The raw silk on the silk expanding drum 1 is drawn along the tangential direction of the raw silk expanding drum 1 and after being guided by the yarn guide mechanism, it is plied and wound on the winder head 4 .

The yarn guiding mechanism comprises a yarn-releasing positioning wheel 3, a coordinating roller 5 and a yarn-receiving positioning wheel 8. The yarn-releasing positioning wheel 3 is perpendicular to the external common tangent of the raw silk expansion cylinder 1, and the cooperating roller 5, the yarn-releasing positioning wheel 3 and the yarn receiving The positioning wheels 8 are arranged in a triangle.

The pay-off unit is also provided with a tension detection mechanism, which is arranged between the yarn-releasing locating wheel 3 and the yarn-receiving locating wheel 8, and includes an angle sensor 2, a fork 7 and a movable roller 6; one end of the fork 7 is Positioning end, angle sensor 2 is arranged on it, and this end is also the rotation axis of fork 7, and the other end of fork 7 is a free end, and movable roller 6 is set on it, and the signal input end of described angle sensor 2 detects the fork 7 swing angle, the signal output terminal is connected to the control terminal of the speed-regulating motor and controls the speed of the speed-regulating motor.

Since the present invention uses a speed-regulating motor to make the raw silk expansion cylinder 1 do active rotational movement, and then makes the raw silk actively and positively retreat along the tangential direction of the raw silk expansion cylinder 1, and the winder head 4 is wound, and no axial retreat will occur. The torsion phenomenon during untwisting fundamentally eliminates the problem of twisting and waste of tail yarn in the production process of roving.

By setting three positioning wheels to guide the running direction of the raw silk and provide stable tension to the raw silk, the structure is simple and easy to manufacture, and since no tensioner is used, elastic strands and damage to the raw silk are avoided.

By setting the tension detection mechanism, the yarn breakage self-stop function is realized. In production, only when the retreating speed of the raw silk on the raw silk expansion drum 1 is consistent with the winding speed of the raw silk on the winder head 4, the Realize the untwisted roving that is neither loose nor tight. However, in reality, the winding-in speed of the raw silk on the head 4 of the winder is constant, but the retreating speed of the raw silk on the raw silk expansion drum 1 is constantly changing. , and suddenly big and small, therefore, in order to real-time control the rotating speed of the raw silk expansion drum 1, the present invention designs the movable roller 5 to be placed on the raw silk between the yarn releasing positioning wheel 3 and the yarn receiving positioning wheel 8, when the original yarn When the tension on the wire is high, the movable roller 5 will be held up due to the large supporting force, thereby driving the swing rod 7 to rotate at a larger angle. At this time, it is necessary to speed up the rotation speed of the original wire expansion drum 1 to speed up the wire release; When the tension on the raw silk decreases, the supporting force received by the movable roller 5 is small, and it will fall back under the influence of its own gravity, so that the swing rod 7 rotates in the direction of natural sagging. The rotating speed of the silk expanding cylinder 1 slows down the unwinding; when the retreating speed of the raw silk on the raw silk expanding cylinder 1 is consistent with the winding-in speed of the ply yarn on the winder head 4, the force received by the movable roller 5 is constant, The swing rod 7 will stay at an angle, and at this time, there is no need to adjust the rotation speed of the raw silk expansion cylinder 1; therefore, by setting the angle sensor 2 to detect the rotation angle of the swing rod 7, and feedback it to the controller of the speed-regulating motor in time, The speed of the speed-regulating motor can be controlled in real time, so that the tension of the original yarn can be kept constant; the tension detection mechanism can also have the function of measuring yarn breakage. When yarn breakage occurs in the system of the glass fiber winder, the original yarn loses tension At this time, the pendulum 7 quickly falls back to the vertical position, and all the speed-regulating motors immediately stop the whole machine, and the raw silk expansion drum 1 continues to rotate and feed the yarn without inertia; when the winding length reaches a fixed length, the speed-regulating motors also realize Machine parking.

After the installation of the system is completed, the production of twist-free doubling can begin. If any one or several broken yarns occur during the production process, the angle sensor 2 will give a zero-tension signal, and the system will stop instantly. After the winding length reaches the fixed length, the motor stops rotating immediately, and the phenomenon of continuing to rotate and feed yarn without inertia.

Claims (4)

1. A glass fiber winding creel, characterized in that: it includes a yarn guide mechanism and more than one pay-off unit; the pay-off unit includes a speed-regulating motor and a raw silk expansion drum; the speed-regulating motor drives the raw silk expansion drum The yarn is unwound by rotation, and the raw silk on the raw silk expansion drum is drawn out along the tangential direction of the raw silk expansion drum, and after being guided by the yarn guide mechanism, the yarn is plied and wound on the winder head. 2. A glass fiber winding creel according to claim 1, characterized in that: the yarn guiding mechanism includes a yarn-releasing positioning wheel and a yarn-receiving positioning wheel; vertical. 3. A glass fiber winding creel according to claim 2, characterized in that: the pay-off unit is also provided with a tension detection mechanism, which is arranged between the yarn-releasing positioning wheel and the yarn-receiving positioning wheel, It includes an angle sensor, a swing rod and a movable roller; one end of the swing rod is a positioning end, on which an angle sensor is arranged, and the other end of the swing rod is a free end, on which a movable roller is arranged, and the signal input end of the angle sensor detects the swing The swing angle of the rod is connected to the control end of the speed-regulating motor at the signal output end to control the speed of the speed-regulating motor. 4. A glass fiber winding creel according to claim 3, characterized in that: the yarn guiding mechanism also includes matching rollers, and the matching rollers, yarn releasing positioning wheels and yarn receiving positioning wheels are arranged in a triangle.