JP2014522794A - How to wind roving winder and roving yarn around bobbin - Google Patents

Abstract

  The present invention relates to a roving winder, and more particularly to a turret roving winder, the winder having at least a pair of rotating bobbins, and each bobbin is provided with a strip having teeth on its peripheral surface for holding a roving yarn. It has been. The winder further has a roving guide device arranged in the longitudinal direction with respect to the rotation axis of the bobbin. The roving guide device is positioned on the outside of the rotary platform and is adjacent to one bobbin, and another bobbin is used to rotate the full bobbin when the full bobbin is replaced with an empty bobbin. It is moved toward the roving guide device by rotation of the platform. The equipment is provided with movably mounted impulse means, and the direction of movement of the impulse means is that of the roving yarn between the full bobbin and an empty bobbin in the vicinity of the roving guide device. It intersects the direction of movement in the region of the strip having teeth on the peripheral surface provided on the empty bobbin. The impulse means is provided with a driving means.

Description

  The present invention is at least a pair of rotating bobbins, and each bobbin is provided with a strip having teeth on its peripheral surface to hold roving or roving, and the bobbins At least a pair of rotating bobbins mounted on a rotary platform rotatably mounted on a frame, and a roving guide device arranged in a longitudinal direction with respect to the rotation axis of the bobbin, the roving guide device Is positioned on the outside of the rotary platform and adjacent to one bobbin, and another bobbin is caused by rotation of the rotary platform when each full bobbin is replaced with an empty bobbin. A roving winder having a roving yarn guide device moved toward the roving yarn guide device, and more particularly to a turret roving winder

  In the present invention, the roving is wound around a bobbin rotating by the roving guide device, the full bobbin is moved away from the roving guide device after the full bobbin is formed, and the roving is filled. Bobbin, especially in a turret roving winder, which moves an empty rotating bobbin with a strip with teeth for holding rovings towards a roving guide device while it is subsequently wound on the bobbin of the tube The present invention relates to a method for winding a roving yarn.

Prior art High speed winding of rovings, an intermediate product in fiber manufacture, is difficult, especially based on the loose (loose) nature of rovings consisting of substantially parallel fibers that are not twisted. Conventional winding devices are used at low winding speeds. In the conventional winding device, when the bobbin is full, it is necessary to interrupt the manufacturing process and the roving winding, replace the full bobbin with an empty bobbin, and then restart the manufacturing and roving winding process. is there.

  For high speeds of roving production and winding, known with a roving guide device adapted to shift the roving at a high speed during winding depending on the height and / or width of the bobbin There are special types of winders. In order to maintain a high productivity level in roving production and winding, it is advantageous if the production and winding of roving is carried out in a substantially continuous manner, in other words, full bobbins and empty It is advantageous if it is carried out without any interruption for replacement with the bobbin. One solution proposed for this problem is the use of what is known as a turret winder. The turret type winder has a rotating platform (or carousel). On this rotary platform, the bobbin is mounted on a spindle that is driven to rotate. One of the plurality of bobbins is disposed adjacent to the guide device, while another bobbin is formed by rotating the rotary platform after the full bobbin is formed by winding. It is moved toward the guide device.

  Turret winders are known as an important part of the production of artificial fibers. In the turret type winder, the bobbin used has a fiber trapping device, and the fiber trapping device operates as follows. That is, after one bobbin is full, the rotary platform rotates to a predetermined position, where an empty bobbin is placed adjacent to the guide device and formed unstable. The fibers are captured by an empty bobbin capture device, and the fibers are cut between a full bobbin and an empty bobbin and then subsequently wound into an empty bobbin, in which case the roving production and There is no interruption in the winding process.

  JP 5078012 discloses a turret winder with a rotating platform with bobbins. In this turret type winder, one bobbin is adjacent to a guide device having a set of rotating blades. This facility further has a fiber manipulator. The fiber manipulator guides the fiber beyond the operating range of the guide device after one bobbin is full, after which the rotating platform rotates and the empty bobbin is positioned next to the guide device Is done. At the same time, the fibers are subsequently produced and wound up at one point in the width of the bobbin onto a full bobbin (already moved away) without interruption. This is because the fibers are not guided. As the rotary platform rotates, the fibers are directed to auxiliary guides on a spindle located on the rotary platform. The vibration of the auxiliary arm then causes the fibers to be directed to the area between the auxiliary guide and the empty bobbin and to the capture means provided on the empty bobbin. This capture means is usually a tapered holder, causing the fibers to be captured by a “wedging” action, and then the fibers are cut between an empty bobbin and a full bobbin, This causes the newly produced fiber to be wound only on the empty bobbin and the full bobbin to be removed from the facility.

  However, it has been found that when the roving is wound, the bobbin used for winding the roving does not have a device for capturing the roving. This is because the bobbin has only a strip with teeth on the circumference (such as a part with hook-and-loop fastener teeth or a unidirectional delicate brush), which strip is located on the strip. Although the roving yarn can be held, the roving yarn cannot be captured and the roving yarn simply passes through the strip. Furthermore, it has been found that the roving does not have sufficient inherent stability to be captured by the method described above in the bobbin that provides the capture device. Since the roving is not captured by the bobbin, the roving is not cut, and even when the rotary platform is rotated, the roving will remain in the original full tube rotated away from the roving guide device. It is continuously wound on the bobbin.

  An object of the present invention is to provide a reliable roving winder having a device for capturing a roving and cutting a roving into an empty bobbin when replacing a full bobbin with an empty bobbin. is there. Another subject of the present invention is a method of winding a roving yarn around a bobbin, and in this method, when the full bobbin is replaced with an empty bobbin, the roving yarn is surely cut to an empty bobbin. It is to provide a way to capture.

SUMMARY OF THE INVENTION An object of the present invention is a roving winder, particularly a turret roving winder, provided with movably mounted impulse means, and the direction of movement of the impulse means is the full bobbin, Crossing the direction of movement of the roving yarn with the empty bobbin in the vicinity of the roving yarn guide device in the region of the strip having teeth on the peripheral surface provided on the empty bobbin, and driving means for the impulse means This is achieved by the roving winder provided.

  In particular, in the method of winding a roving yarn around a bobbin of a turret roving winder, the roving yarn is moved toward a strip having teeth in order to hold the roving yarn on an empty bobbin in the vicinity of the guide device. The yarn is cut in a controlled manner in the area between the full bobbin and the empty bobbin, and at the same time the free end of the roving yarn in the empty bobbin is used to hold the roving in the empty bobbin. And the roving is captured by the strip with teeth and begins to wind on an empty bobbin without any interruption in the production and winding of the roving.

  The advantages of the present invention allow the roving to be captured on a rotating bobbin without interruption in the roving production and winding, and thus the production in roving production and winding. And process automation is improved.

  The invention is shown schematically in the drawings.

FIG. 3 is a schematic side view illustrating an exemplary embodiment of a roving winder. It is a top view which shows the installation shown in FIG. It is a figure which shows the example arrangement | positioning of an impulse means. FIG. 6 shows another exemplary arrangement of impulse means. FIG. 6 shows another exemplary arrangement of impulse means. FIG. 6 shows another exemplary arrangement of impulse means.

  A roving winder can be used to wind the roving around a rotating bobbin. In order to prevent any interruption in the production and winding of the roving, the preferred arrangement of the winder is that used in turret type winders. The turret winder has a rotating platform on which at least two driven spindles are positioned so as to be rotatable about the longitudinal axis of the platform. These spindles hold bobbins that house the rovings during the winding process. Each bobbin is provided with means for holding the roving yarn in the vicinity of one of the two ends. This means is usually a strip with teeth on the circumference. What is important is that this strip supports the portion having the hook (tooth) of the hook-and-loop fastener, or supports a fine brush or the like in one direction, and is disposed so as to surround the bobbin. It is.

  On the outside of the rotating platform, the roving guide device is positioned along the rotation axis of the bobbin. In other words, it is positioned along the length and / or width of the bobbin. The roving guide device is adjacent to one bobbin, while the other bobbin is directed toward the guide device by rotation of the rotary platform when a full bobbin is replaced with an empty bobbin. Moved. The roving guide device is designed in a suitable manner, which is not important for the practice of the present invention.

  Winding is performed such that the roving is wound on one bobbin. After the bobbin is completely wound on the bobbin, that is, after the bobbin is full, the platform rotates, and thus the full bobbin is moved away from the roving guide device. The empty bobbin approaches the roving yarn guide device. The roving is continuously guided by the roving guide device and wound on a full bobbin moved away from the roving guide device. In contrast, the roving passes through an empty bobbin. This is because the roving bobbin does not have a roving catching means, but has only a means for holding the roving.

  Next, an impulse (impulse) that not only cuts the roving between the full bobbin and the empty bobbin, but also turns the newly formed end of the roving toward the roving holding means at the same time. Is applied to the roving, a means for cutting the roving and turning the roving toward the roving holding means provided on the empty bobbin is activated. This roving yarn cutting / turning means has a form of movably mounted impulse means, and the direction of movement of the impulse means is an empty bobbin disposed in the vicinity of the roving guide device. Crossing the direction of movement of the roving between the bobbin and the bobbin. This direction of movement of the roving yarn intersects the direction of movement of the impulse means in the region of the strip having teeth on the circumferential surface provided on the empty bobbin. The impulse means is connected to a driving device that gives sufficient acceleration to the impulse means when the impulse means intersects the direction of the roving in the vicinity of the strip having teeth on the peripheral surface provided on the empty bobbin. ing.

  The impulse means are formed in the form of suitable elements, such as hooks, plates, bent plates, rods or rods with ends for roving guides, so as to be able to catch rovings etc. Yes. It is clear that the impulse means is made of metal, plastic or composite material, or made of another suitable material, the mass of the impulse means combined with the speed of movement of the impulse means Is sufficient to provide the necessary impulse for the roving yarn. The drive for the impulse means may be of the combined type known as mechanical, pneumatic, or magnetic, or hybrid.

  In order to improve the cutting of the roving yarn due to the operation of the impulse means, it is preferable to provide a portion of the impulse means designed to contact the roving yarn, for example to provide an edge at the leading edge of the plate-shaped impulse means, The edges reduce or eliminate the possibility that the roving will be missed. If the roving is missed, it causes the roving to whip around the impulse means, and the roving continues to be wound on the full bobbin. Theoretically, the impulse means may be formed in the form of a device that protrudes reciprocally, vibrates reciprocally, or linearly moves or rotates reciprocally. The particular individual design of the impulse means and its drive may be varied, for example by the individual design of the winder or the spatial arrangement of the winder.

  As mentioned above, the impulse means moves at a sufficient speed or acceleration so that cutting does not have to be performed at the impact point of the impulse means on the roving, but as a result of the impact on the roving, Cutting is performed, and the free end of the roving thread that runs from the roving guide device toward the strip having teeth on the peripheral surface provided on the empty bobbin in the vicinity of the roving guide device is turned. In this case, the diverting force acting on this end of the roving yarn substantially presses the roving yarn against the strip having teeth on the peripheral surface, and the strip is based on the ability to hold the roving yarn. Hold. In particular, in order to improve the “pressing” of the newly formed end of the roving yarn against the strip having teeth on the peripheral surface provided on the empty bobbin in the vicinity of the roving yarn guiding device, It may be arranged as follows. That is, when the impulse means passes in the vicinity of the strip having teeth on the peripheral surface provided on the empty bobbin in the vicinity of the roving guide device, and thereby the movement speed of the impulse means is sufficient, Not only is the yarn cut reliably, it is also positioned reliably in a strip having teeth on the circumferential surface provided on an empty bobbin in the vicinity of the roving guide device. In the strip, the roving is held correctly and the production of the roving and the winding of the roving onto the bobbin continues without interruption.

  When the roving is wound around a bobbin of a turret roving winder in particular, a method of winding the roving onto a rotating bobbin by a roving guide device is used. When the bobbin is full, the full bobbin is moved away from the roving guide device, and then an empty rotating bobbin fitted with a strip with teeth to hold the roving yarn is fed into the guide device. It is moved toward. During this movement, the roving is subsequently wound up on a full bobbin which has been moved away from the roving guide device. The roving guide device continues to guide the roving along the height and / or width of the bobbin. As soon as the roving is guided closer to the toothed strip to hold the roving in an empty bobbin in the vicinity of the roving guide device, the roving is controlled to fill the full bobbin. The newly formed free end of the roving cut in the area between the empty bobbin and at the same time runs out of the guide device, towards the strip with teeth to hold the roving in the empty bobbin Oriented or turned. The movement of the newly formed free end of the roving to the strip with the teeth to hold the roving on the empty bobbin is due to the high speed of the roving movement before the roving is cut, Assisted by the high speed of the free end after the yarn has been cut. This allows the roving to reach the strip with the teeth provided on the empty bobbin. Thus, the strip holds the “conveyed” roving, after which the roving begins to be wound onto an empty bobbin, and all procedures are performed without any interruption in the manufacture or winding of the roving .

  Especially for timing reasons, certain time intervals are required for the reliable execution of individual steps such as cutting of the roving and capturing of the roving into a strip with teeth provided on an empty bobbin. Before the controlled cutting of the roving, the speed of the roving production and winding is reduced, and then the roving is trapped in a strip with teeth provided on an empty bobbin in the vicinity of the guide device Later the speed can be increased beyond the normal production level in order to increase the speed to the normal production level or to take up the excess of the roving produced during the slow winding period. .

  A special embodiment of a winder in the form of a turret winder and its subordinate units is shown in FIGS. 1 to 3d.

  The winder has a rotary platform 1. The platform 1 is rotatably mounted on a frame of equipment (not shown). At least two spindles 2 that are driven and rotated are positioned on the platform 1, and a bobbin 3 is mounted on these spindles 2. The roving yarn 5 is wound around one bobbin of the two bobbins 3 by the guide device. The guide device is shown by the presser finger 4 in this embodiment. The bobbin 3 is provided with a means for holding the roving yarn near one end, here the upper end. In this case, the means for holding the roving is a strip 6 having teeth on the peripheral surface. The strip 6 is recognized in an empty bobbin 31 in the vicinity of the roving guide device 4. 1 and 2 show a state where the full bobbin 30 is arranged on the left side and the platform 1 is rotated so that the full bobbin 30 is separated from the guide device. An empty bobbin 31 is positioned in the vicinity of the guide device. The roving yarn 5 passes from the guide device through the empty bobbin 31 and enters the separated full bobbin 30, and is continuously guided and wound around the bobbin 30.

  In FIG. 1, the roving yarn 5 is in the upper position. However, as soon as the presser finger 4 of the roving guide device is moved down past the strip 6 having teeth on its peripheral surface, the impulse means 7 arranged on the outside of the platform 1 has the required speed and required Is driven forward with an acceleration, and thus intersects the direction of movement of the roving 5 between the full bobbin 30 and the empty bobbin 31 in the vicinity of the guide device in the region of the belt 6 having teeth on the peripheral surface. Will come to do. In this case, the impulse means 7 strikes the roving yarn 5 at a desired speed and a desired force. As a result, the roving yarn 5 is cut between the bobbins 30 and 31, and the roving yarn 5 that runs from the guide device is moved. The free end is turned toward the strip 6 having teeth on the peripheral surface provided on the empty bobbin 31 in the vicinity of the guide device 4, whereby the roving yarn 5 becomes the strip 6 having teeth on the peripheral surface. Pressed. The strip 6 holds the roving yarn 5 based on the function of holding the roving yarn 5.

  As shown in FIGS. 3a to 3d, the structure of the impulse means 7 may be of any suitable type including means of vibration, protrusion, reciprocation, linear motion or rotational motion. The impulse means 7 may be linear, curved or bent, and may be provided with guide means 70 at its working end as shown in FIG. 3d. FIGS. 3 a to 3 d show a pneumatic drive for the impulse means 7. However, the drive of the impulse means 7 may likewise be mechanical, magnetic, hybrid or similar types. An important requirement for this drive is that in combination with the individual design of the impulse means 7, the impulse means 7 provides sufficient speed or acceleration to the operation of the impulse means 7 at the moment the impulse means 7 strikes the roving yarn 5. is there.

Claims (10)

At least a pair of rotating bobbins, each bobbin being provided with a strip having teeth on its peripheral surface to hold the roving, the bobbin being rotatably mounted on a frame of equipment At least a pair of rotating bobbins mounted on a platform of the type;
A roving guide device arranged longitudinally with respect to the axis of rotation of the bobbin, the roving guide device being positioned outside the rotary platform and adjacent to one bobbin; The bobbin is moved toward the roving guide device by rotation of the rotary platform when each full bobbin is replaced with an empty bobbin;
A roving winder, particularly a turret roving winder,
The equipment is provided with movably mounted impulse means, and the direction of movement of the impulse means is a roving yarn between the full bobbin and the empty bobbin in the vicinity of the roving guide device. The roving winder is characterized in that the driving means is provided in the impulse means, which intersects the region of the strip having teeth on the circumferential surface provided on the empty bobbin.   The winder according to claim 1, wherein the impulse means is formed in the form of a hook, a plate, a bent plate, a rod, or a rod having a guide end.   The winder according to claim 1 or 2, wherein the impulse means is made of metal, plastic or composite material.   The winder according to any one of claims 1 to 3, wherein an edge is provided in the portion of the impulse means designed to contact the roving.   5. The impulse means according to claim 1, wherein the impulse means projects in a reciprocating manner, vibrates in a reciprocating manner, or is moved in a reciprocating linear motion or in a rotating manner. The winder of any one of Claims.   The impulse means has the strip having teeth on a peripheral surface provided on an empty bobbin in the vicinity of the coarse yarn guide device, and the impact of the impulse means on the coarse yarn cuts the coarse yarn and the free end of the coarse yarn is provided in an empty bobbin near the coarse yarn guide device The winder according to any one of claims 1 to 5, wherein the winder is adapted to be moved at such a speed as to be deflected toward the vehicle.   The impulse means passes or contacts the strip having teeth on a circumferential surface provided on an empty bobbin in the vicinity of the roving guide device during the movement of the impulse means. The winder according to any one of claims 1 to 6. The coarse yarn is wound around the rotating bobbin by the coarse yarn guide device,
Moving the full bobbin away from the roving guide device after formation of the full bobbin;
Moving the empty bobbin with a strip having teeth for holding the roving toward the roving guide while the roving is subsequently wound on the full bobbin;
In particular, in a turret roving winder, a method of winding a roving around a bobbin,
In order to retain the roving yarn on the empty bobbin in the vicinity of the guide device, after moving the roving yarn toward the strip having teeth, the roving yarn is moved between the full bobbin and the empty bobbin. Cutting while controlling in the area between,
At the same time, the free end of the roving yarn on the empty bobbin is directed towards the strip with teeth to hold the roving on the empty bobbin and the roving is captured by the strip with teeth And start winding on the empty bobbin without any interruption in the production and winding of the roving,
A method of winding roving on a bobbin.   At least the speed of the winding of the roving is temporarily reduced before the controlled cutting of the roving and is accelerated again when the roving is captured by the strip with the empty bobbin teeth, thereby 9. The method of claim 8, which improves the certainty of the roving cut and the certainty of the roving capture to the strip having teeth provided on the empty bobbin.   The speed is accelerated to exceed the normal production level after the roving is captured by the strip having teeth provided on the empty bobbin, thereby reducing the winding speed The method of Claim 9 which winds up the surplus part of the roving produced | generated by this.

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