JP5337225B2 - Partial warping machine for patterned warp - Google Patents

Description

  The present invention includes a warping drum connected to a winding drive unit, at least one yarn guide movable in parallel with an axis of the warping drum, and a plurality of lead rods fixed to the warping drum. The present invention relates to a partial warper for a patterned warp.

  The partial warp for pattern warp is used to produce a so-called pattern warp or short warp. For this purpose, the warping drum rotates. A yarn guide (generally provided with a plurality of yarn guides at the same time) guides the yarn around the circumference of the warping drum, where the yarn is generally fed on a conveyor belt or in the formation of a patterned warp yarn Is not necessary, the yarn is guided in front of the end face of the warping drum, where it is fed on the “core”, ie on the auxiliary conveying device.

  In the manufacture of warp yarns, that is, in the manufacture of patterned warp yarns, so-called twill or sizing divisions must generally be formed. For this purpose, a Leeds rod is provided. The yarn wound around the warping drum is guided partly radially outward and partly radially inward by means of a lead rod. As the warping drum rotates, the Reeds rod must rotate with the warping drum. For this purpose, the Reeds rod is fixed to the warping drum, or in any case is attached to the warping drum so as not to be relatively rotatable.

  There are several ways in which the thread can be positioned relative to the Reeds rod. One approach is to have a so-called “capture hook” on the end of the lead rod facing the end face to which the yarn is fed. These catch hooks are advanced when the yarn is to be guided radially outward of the Leeds rod, and are retracted otherwise. Another approach is to use a yarn guide to pass the yarn past the tip of the Leeds rod or feed it directly onto the Leeds rod when it should be fed below the Leeds rod. .

  Both approaches require that the warp drum or the warp drum be controlled in the circumferential direction so that the capture hook motion control or yarn guide motion control can be controlled with the required accuracy even when the warp drum speed increases. Knowing the relative position of the Reeds rod as accurately as possible.

  There exists a thing as described in patent document 1 as said partial warp machine for pattern warps.

JP 2008-115524 A.

  During warp manufacture (warping), if a yarn break (or another defect with a similar meaning) occurs, the warp drum must be braked relatively quickly. However, the warp already wound on the Reeds rod and warping drum has a certain mass that prevents rapid braking. That is, when the warping drum is quickly braked, the lead rod may be out of the original position and not at the originally planned angular position. Therefore, various problems may occur when the warping drum is restarted. This is because in that case the yarn is no longer correctly fed to the Leeds rod.

  An object of the present invention is to ensure a reliable warping operation of a partial warp for a pattern warp.

  The above-mentioned problem is solved by providing a sensor device for detecting the position of the lead rod around the warping drum in the type of warp partial warper of the type indicated at the beginning.

  That is, the sensor device confirms at which angular position the Reeds rod is disposed. That is, the sensor device checks whether the Reeds rods are positioned at “correct” angular positions or whether the Reeds rods have deviated from their planned angular positions. Since all the reed rods are not necessarily displaced in the same manner at the time of failure, the sensor device mainly confirms the position of each reed rod individually. Accordingly, the sensor device can determine the relative angular position with respect to the warping drum for each Leeds rod.

  In this case, preferably, the sensor device faces the end face of the warping drum. Thus, the sensor device can also “detect” the end face of the lead rod. This end face is emptied over time, that is, the end face must not be obscured by the wound yarn. This makes it easy for the sensor device to detect the Leeds rods and to leave them.

  Alternatively or additionally, the sensor device can be adapted to face the circumferential surface of the warping drum. In that case, such a sensor device detects the position of the lead rod at the place where the yarn layer is formed. Combining both positions, such a sensor device can also detect the Leeds rod “obliquely”.

  Mainly, the sensor device is fixedly arranged in the rotational direction of the warping drum. In other words, only a single sensor device is required to detect the position of all Leeds rods on the warping drum. Therefore, the cost and expenditure for signal processing can be kept low.

  Mainly, the sensor device is connected to an alarm device. In other words, when braking (or when stopping due to another failure), the sensor device can issue an alarm when the sensor device confirms that at least one of the lead rods has deviated from its target position. As such an alarm device, for example, an acoustic signal or an optical signal can be generated, and the operator can return the Leeds rod to its correct position again. For this reason, for example, a mark can be provided on the warping drum at a place where the Reeds rod should be placed.

  In an alternative or additional configuration, the control device for controlling the movement of the yarn guide and the sensor device are connected so that the yarn can be wound on the warping drum by the yarn guide. it can. In other words, the yarn guide can displace the guided yarn at a correct angular moment in consideration of the angular deviation and supply the yarn to the Leeds rod. In that case, position correction of the Leeds rod is not necessary, or excessive accuracy is not necessary. This configuration has an advantage, inter alia, even during operation, for example when a change in the angular position of the Leeds rod can occur during a quick start of the warping drum.

  Mainly, the Reeds rod has a mark that can be detected by the sensor device. That is, such a mark can be formed so as to be specially adapted to the sensor device. For example, a light emitting diode or another light source, which can be detected relatively easily by an optical receiver, can be placed on the rod. The mark may have a special reflection characteristic adjusted to a signal sent from the sensor device. In that case, the sensor device no longer needs to detect the Leeds rod itself and can be limited to the detection of the mark, so that the sensor device can be configured relatively simply.

  Primarily, the sensor device is formed as an active sensor device. That is, the sensor device includes, for example, one transmitter and one receiver. Such a transmitter delivers a signal that can be reflected by a Reeds rod or an element coupled thereto, while the receiver can detect this signal. In many cases, such an active sensor device can be formed with relatively high sensitivity, and thus the position of the lead rod can be detected with high accuracy.

  In principal, the sensor device may have a light source or an ultrasonic source. Such a light source can be formed as a laser light source, for example. With such a signal source, the position of the lead rod around the warping drum can be determined in a non-contact manner.

  Alternatively or additionally, the sensor device may comprise an image generating device. Such an image generation apparatus has, for example, a camera that generates an image of the warp drum end face portion at a specific time point. In such an image, it can be confirmed whether the Reeds rod is at the target position or not. In the latter case, the degree of deviation can also be determined.

  Mainly, the sensor device may detect the winding height of the yarn on the warping drum. In that case, such a sensor device can additionally be used to determine the structure of the yarn layer formed on the warping drum. For example, when the actual winding height can be detected, the yarn feed can be controlled so that a desired cone angle is generated at the end face of the generated yarn layer. In this way, operation similar to partial warping can be realized.

  It is also advantageous if the sensor device is connected to a drive device, with which at least one reed rod can be displaced in the radial direction with respect to the axis of the warp drum. In that case, the position of the reeds rod can be adapted to the maximum winding height relatively accurately. Thereby, on the other hand, it can be confirmed that a sufficient space is available in the lower part in the radial direction of the Leeds rod to accommodate the yarn layer itself. On the other hand, the lead rod can be positioned in a relatively close contact with the outer periphery of the yarn layer, so that less yarn material is wasted, and an excessively large free yarn row is guided through the lead rod. There is no.

  Mainly, the Reeds rod is connected to the warping drum via radial holding arms at a plurality of axial positions, and the connection between one Reeds rod and one holding arm is detachable, The holding arm should be movable away from the Reeds rod. The yarn is wound around the warping drum in the end face region. The yarn is moved away from the end face parallel to the axis of the warping drum by a conveyor belt or another movable conveyor surface. Thus, a new space for the bobbin layer is formed on the end face. This is repeated until the desired warp width is reached. The Reeds rod must be suitable for all possible warp widths and must basically be continuous over the axial length of the warping drum. Therefore, when the warping process is started, it is meaningful to have a structure in which the lead rod is held in the radial direction over the entire length of the warping drum. By the way, if the warp reaches a certain width, the connection between the lead rod and the warping drum that is closest to the end face is canceled, the holding arm moves inward in the radial direction, and the holding arm becomes an obstacle to further warp feeding. It will never be. In that case, the Reeds rod is held against the centrifugal force in the radial direction by the warp.

It is a perspective view which shows the structure of the outline of the principal part of the partial warp for pattern warps.

  Hereinafter, the present invention will be described based on preferred embodiments in conjunction with the drawings.

  As shown in FIG. 1, a pattern warp partial warping machine 1 has a warping drum 2, and the warping drum 2 is coupled to a winding drive unit 3 schematically shown in the drawing. The winding drive unit 3 can rotate the warping drum 2 in the direction of the arrow 4 shown in the drawing during winding.

  Although not shown, a large number of bobbins are arranged in the bobbin creel. In this embodiment, up to 128 bobbins can be placed in the creel.

  The yarn is pulled out from each bobbin and passed through the yarn guide hole 5 of the yarn guide 6. All the yarn guides 6 are integrated to form a yarn displacement unit 7.

  The yarn guide 6 can be moved so that the yarn guide hole 5 is guided on the warping drum 2 in the axial direction. The yarn guided by the yarn guide hole 5 is fed onto the conveyor belt 8, and the conveyor surface formed by the plurality of conveyor belts 8 moves away from the end surface in parallel to the axis of the warp drum 2, The yarn displacement unit 7 is disposed on this end face. When the yarn should not be fed around the warping drum 2, the yarn guide hole 5 is moved to the front of the end face of the warping drum 2. Yarn that is not required for the production of the handle warp is wound on a central string (not shown).

  In order to form a so-called “twill” or “sizing division”, the reed rods 9 are provided on the warping drum 2, and these reed rods 9 are arranged between the adjacent conveying belts 8. Each Leeds rod 9 has a tip 10 at its end facing the yarn displacement unit 7, and this tip 10 faces substantially radially outward. Such a tip 10 is here arranged on the Leeds rod 9 so that it cannot move.

  When the yarn is to be fed onto the lead rod 9 radially outward, the yarn guide hole 5 is moved in the axial direction so that the yarn is placed on the lead rod 9 on the tip side away from the yarn displacement unit 7. It is done. However, when the yarn is to be fed in the lower radial direction of the Leeds rod 9, the yarn guide hole 5 moves toward the end face when the Leeds rod 9 passes by the side, and the yarn is gripped by the tip 10. There is nothing. After passing the lead rod 9, the yarn guide hole 5 is returned to its original position, and the winding (warping) process can be further advanced.

  However, in order to control such movement, it is necessary for a control device (not shown in detail) that controls the movement of the yarn guide hole 5 to detect the angular position of the lead rod 9 around the warping drum 2. Only in that case, when the lead rod 9 that should not be wound passes by the side of the thread guide hole 5, the thread guide hole 5 can be accurately retracted and advanced in the axial direction.

  These positions can be communicated to the control device before the warping drum 2 is started for the first time. However, there may be a situation where the angular position of the Reeds rod 9 with respect to the warping drum 2 changes. Such a case is, for example, a sudden braking of the warping drum 2 when a yarn breakage occurs. In that case, it is desirable to stop the warping drum 2 quickly so that the damaged yarn does not get mixed into the warp.

However, during such sudden braking, there is an inertial force due to the mass of the already wound warp yarn and an inertial force due to the mass of the Reeds rod 9, so that the Reeds rod 9 is connected to the warping drum 2. There is a risk that it will shift somewhat in the circumferential direction. In that case, after the repair of the yarn (or removal of another obstacle), when the pattern warp partial warper 1 is started again, the actual angular position of the Leeds rod 9 no longer coincides with the predetermined angular position, and the yarn Movement of the guide hole 5 does not produce the desired result. The yarn is no longer fed to the Leeds rod 9 as desired, and the pattern warp is defective.
In order to eliminate this problem, in the embodiment according to the present invention, a sensor device 11 is provided. The sensor device 11 is disposed in front of the end face of the warping drum 2 and includes a leading end 10. The end face of the warping drum 2 is “detected” at the place where the rod 9 is disposed.

  Therefore, it is possible for the sensor device 11 to continuously determine the position of the Reeds rod 9 around the warping drum 2. At this time, the sensor device 11 is fixedly held. That is, the sensor device 11 is not rotated together with the warping drum 2, but is attached to the machine frame 12, for example.

  In the simplest case, the sensor device 11 may be configured to only check whether or not the angular position of the Reeds rod 9 has changed. When a change in angular position is confirmed in a single Reeds rod 9, this Reeds rod 9 can generate an alarm signal, for example an acoustic signal or an optical signal. In that case, the operator can move the lead rod 9 to the starting position again before the warping drum 2 is restarted. This starting position can be realized, for example, by marking the warp drum 2, and in this case, the operator only has to align the Leeds rod 9 with the mark (not shown) again.

  However, the sensor device 11 can be connected to a control device (not shown) of the yarn guide 6 in detail. In that case, the control device takes into account the deviation detected by the sensor device 11 between the target position and the actual position of the lead rod 9 when operating the yarn guide 6.

  In order to facilitate the detection of the Leeds rod 9, the Leeds rod 9 can be provided with a mark at the tip 10 thereof. In that case, the sensor device 11 only needs to detect the mark, and it is no longer necessary to detect the tip 10 of the lead rod 9 itself. Such a mark may for example have a particularly good reflection characteristic. Alternatively, the mark may be a light emitting diode or another form of signal generator whose signal can be detected by the sensor device 11.

The sensor device 11 may mainly be an active sensor device. In other words, the sensor device 11 has a transmitter not shown in detail, and this transmitter transmits a signal, for example, a light beam such as a laser beam or a sound wave such as an ultrasonic wave in the direction of the end face of the warping drum 2. It may be something like this.
The sensor device 11 may further include a passive receiver that receives reflected light or reflected waves. Since the tip 10 of the Leeds rod 9 has a reflection characteristic different from that of the remaining end face region of the warping drum 2, the angular position of the Leeds rod 9 around the warping drum 2 can be perfectly detected. It becomes.

  The sensor device 11 can also be used to detect the winding height of the yarn layer formed on the warping drum 2. This wrap height can be used to control the yarn feed, i.e. to control the movement of the yarn guide 6, so that a yarn layer end face with the desired cone angle is produced. Such cone angles are known per se and are therefore not described in detail here.

  The Leeds rod 9 can be fixed to the warping drum 2 so that it can be displaced in the radial direction. For this reason, a holding arm not shown in detail is provided. Each holding arm is detachably attached to the Reeds rod 9. If it is desired to produce a large length of warp warp, the wrapping height will be increased accordingly, and the outer Reeds rod will surround the warp drum 2 so that the portion of the yarn layer that passes will pass under this Reeds rod. Must be placed at a correspondingly large distance from On the other hand, when a short length warp yarn is to be wound, the outer lead rod 9 is positioned further inward in the radial direction so that the distance between the lead rod and the outer periphery of the yarn layer does not become excessively large. Is desirable.

  Each Reeds rod 9 is positioned at a predetermined length in the axial direction of the warping drum 2 and is held at a plurality of positions of the warping drum 2. Since the transported belt 9 transports the wound yarn to the side away from the end surface of the warping drum 2 adjacent to the yarn displacement unit 7, the thread layer is the first warping drum for the thread layer after a certain time. It is located in a region to be coupled with, that is, in a coupling portion adjacent to the end face. Before the thread layer reaches this joint, the coupling between the holding arm and the Leeds rod 9 is released and the retaining arm is moved radially inward, thus continuing the feed of the thread layer away from the end face. Hinder.

  In that case, the connection between the Leeds rod 9 and the warping drum 2 is not as stable as it remains. However, this is not important since the position of the Reeds rod 9 can be detected continuously by the sensor device 11.

  Naturally, the sensor device 11 is synchronized with the rotational movement of the warping drum 2 in some way, and the sensor device 11 always detects whether the Leeds rod 9 is in the right position at the “right” moment. be able to.

  Along with the above possibilities, the sensor device 11 can also be formed as an image generating device that generates an image of the end surface portion of the warping drum 2 at a specific time. In that case, the target position of the tip 10 of the Leeds rod 9 is in this image. When the tip 10 of the Leeds rod 9 is not at the target position, not only this can be detected, but also the magnitude of the deviation between the target position and the actual position can be detected.

  The pattern warp partial warper according to the present invention is used to manufacture so-called pattern warp or short warp.

DESCRIPTION OF SYMBOLS 1 ... Partial warping machine for pattern warps 2 ... Warping drum 3 ... Winding drive part 9 ... Reeds rod
11 ... Sensor device

Claims (13)

A warping drum (2) connected to the winding drive unit (3), at least one yarn guide (6) movable parallel to the axis of the warping drum (2), and the warping drum (2 In the pattern warp partial warper (1) having a plurality of lead rods (9) fixed to
A partial warp for pattern warp comprising a sensor device (11) for detecting the position of the lead rod (9) around the warping drum (2).   2. The warp partial warp for a warp according to claim 1, wherein the sensor device (11) is provided facing the end face of the warp drum (2).   3. The warp partial warp for a warp according to claim 1, wherein the sensor device (11) is provided facing the peripheral surface of the warp drum (2).   The pattern warp yarn according to any one of claims 1 to 3, wherein the sensor device (11) is fixedly arranged in a rotational direction (4) of the warping drum (2). Partial warping machine.   The partial warping machine for a handle warp according to any one of claims 1 to 4, wherein the sensor device (11) is connected to an alarm device.   The sensor device (11) is connected to a control device that controls the movement of the yarn guide (6), and the yarn guide can wind the yarn on the warping drum (2). The partial warper for the handle warp according to any one of claims 1 to 5.   The warp partial warp for a pattern warp according to any one of claims 1 to 6, wherein the lead rod (9) has a mark that can be detected by the sensor device (11).   The partial warping machine for a pattern warp according to any one of claims 1 to 7, wherein the sensor device (11) is formed as an active sensor device.   9. The partial warp for warp warps according to claim 8, wherein the sensor device (11) detects a light source or an ultrasonic source.   The partial warping machine for a pattern warp according to any one of claims 1 to 9, wherein the sensor device (11) has an image generating device.   The pattern warp yarn according to any one of claims 1 to 10, wherein the sensor device (11) detects a winding height of the yarn on the warping drum (2). Partial warping machine.   The sensor device (11) is connected to a driving device, and at least one of the lead rods (9) can be displaced in the radial direction with respect to the axis of the warping drum (2) by the driving device. The partial warping machine for a patterned warp according to claim 11,   The lead rod (9) is connected to the warping drum (2) via radial holding arms at a plurality of axial positions, and one lead rod (9) and one holding arm The warp yarn portion according to any one of claims 1 to 12, wherein the joint is detachable, and the holding arm is movable in a direction away from the lead rod (9). Warping machine.