JPS6328212Y2 - - Google Patents

Description

[Detailed explanation of the invention] Technical field This invention is a composite spun yarn (filament in the core,
The present invention relates to a guide device for a continuous yarn for a core and a covered fiber bundle for a skin when spinning a core spun yarn in which a continuous yarn such as a spun yarn is arranged and the periphery thereof is covered with short fibers.

Prior Art The important point in this type of composite spun yarn is to completely cover the continuous yarn serving as the core with the covering fibers. That is, when a continuous yarn is inserted between the front roller and apron of the draft part of a spinning frame, it is necessary to always position the continuous yarn at the center of the coated fiber bundle.

Various devices have been proposed in the past in order to always position the continuous yarn at the center of the covered fiber bundle. For example, utility model registration application Sho 42-13549, 44-
20501 and 57-18445 disclose collectors for spinning composite yarns. These collectors differ in their individual configurations, but a part that guides the continuous yarn and a part that guides the covered fiber bundle, that is, a so-called collector part, are integrally formed, and the collector part is engaged with the covered fiber bundle while continuing the process. They have a common structure of guiding the yarn. With these prior art collectors, even if the coated fiber bundle moves in the axial direction of the front roll in the free zone between it and the apron behind the front roll, It is thought that the continuous yarn also moves in accordance with the traverse, and as a result, the continuous yarn can always be arranged at the center of the coated fiber bundle.

However, there are fundamental drawbacks to using collectors in the spinning process. In other words, if a collector is used to condense the fiber bundles entering the nip point of the front roll, the yarn quality will be improved compared to not using a collector. However, in the spinning process where a large number of spindles are controlled, even when spinning normal spun yarn, the collector may remain broken or the fiber bundle may be passed under the collector.
Alternatively, the movement of the collector may not be smooth and may result in defective threads being generated at the weight. Therefore, there is a tendency in recent spinning mills to stop using collectors in the spinning process. Furthermore, when spinning composite spun yarn, which is more difficult to manage than regular spun yarn, it is virtually impossible to manage the collector to reliably guide the coated fiber bundle and continuous yarn for a large number of spindles. close. Therefore, it is practically impossible to always position the continuous yarn in the center of the coated fiber bundle using collectors such as those disclosed in the prior art.

Purpose of the invention The present invention provides a guide device for spinning a composite spun yarn that can eliminate the drawbacks of conventional collectors for spinning a composite spun yarn and can always position the continuous yarn at the center of the coated fiber bundle. The purpose is to

Structure of the invention The purpose of the invention is to provide a saddle that is repositionably attached to the pendulum arm of a top arm drafting device of a spinning machine, and continuous yarn guide elements (hereinafter referred to as yarn guide elements) for the core that are fixed to the left and right sides of the saddle, respectively. (referred to as a yarn guide element) and a covered fiber bundle guide for the skin which is fixed to the left and right sides of the saddle respectively at a position upstream from the position of the yarn guide element when viewed in the direction of flow of the fiber bundle in the drafting device. A guide device for spinning a composite spun yarn comprising a fiber bundle guide element (hereinafter referred to as a fiber bundle guide element), wherein the yarn guide element and the fiber bundle guide element each open downward, and a guide surface substantially parallel to the direction of flow of the fiber bundle in the drafting device, the fixing of both guide elements to the saddle being aligned with the center line of the guide surface of the yarn guide element and the fiber bundle; the centerline of the guide surface of the bundle guide element and each side of the saddle are arranged in the same vertical plane substantially parallel to the pendulum arm, and the distance between the vertical planes on both sides of the saddle is such that This is achieved by means of a guide device for spinning the composite yarn, which is adapted to correspond to the spindle pitch of the spinning machine.

As mentioned above, in the guide device of the present invention, the center line of the guide surface of the yarn guide element and the center line of the guide surface of the fiber bundle guide element are parallel to the pendulum arm, so each roller of the draft device Since the distance between the vertical planes is determined corresponding to the spindle pitch, the continuous yarn is always kept at the center of the covering fiber bundle over all spindles of the spinning machine. can be located in

The mounting portion of the guide device of the present invention for attaching the saddle to the pendulum arm includes an upper plate that extends parallel to the upper surface of the pendulum arm and has an elongated hole extending in the longitudinal direction in the center thereof; and side plates that hang down from both side edges of the upper plate and extend downstream when viewed from the flow direction of the fiber bundle in the drafting device, and the distance between the two side plates has a length corresponding to the width of the pendulum arm. It is preferable that the If the mounting part of the saddle is configured in this way, the guide device can be stably attached to the pendulum arm, and the draft device of the yarn guide element and the fiber bundle guide element fixed to the saddle can be stably attached. It is possible to prevent the relative positions of the parts from going out of order during operation. In addition, since a slotted hole is provided in the top plate of the saddle, when attaching the saddle to the pendulum arm using the saddle fixing screw for the middle roller of the pendulum arm, the position of the saddle in relation to the draft device, and therefore The position of the yarn guide element and the fiber bundle guide element relative to the draft device can be adjusted.

Further, it is preferable that the yarn guide element of the guide device of the present invention is a guide roll, particularly a rotatable guide roll. If the yarn guide element is configured in this way, it is possible to stably supply continuous yarn to the drafting device, that is, without applying unreasonable tension, and to ensure that the yarn guide element is continuously supplied. Damage caused by threads can be prevented.

Furthermore, it is preferable that the guide surface of the guide roll is formed by a groove having a substantially V-shaped cross-section, while the guide surface of the fiber bundle guide element is formed by a groove having a substantially U-shaped cross-section. If the guide surfaces of the yarn guide element and the fiber bundle guide element are formed in this way, the continuous yarn and the covered fiber bundle running on the guide surface will be aligned with the center line of the guide surface, making it easier to It is possible to ensure that the continuous yarn is always located at the center of the coated fiber bundle.

Embodiment Hereinafter, an embodiment of the guide device for spinning composite spun yarn of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the guide device for spinning composite spun yarn of the present invention includes a saddle 4 and guide rolls 2, 2'.
and capacitors 3 and 3'(3' is not shown). The attachment part of the saddle 4, which is attached to the pendulum arm 1 (Fig. 2) of the top arm type draft device of a spinning machine, is attached to an upper plate 4a having a width corresponding to the width of the pendulum arm, and from both side edges of the upper plate. It consists of side plates 4c, 4c' that hang down and extend to the left in FIG. An elongated hole 4b extending in the longitudinal direction of the saddle 4 is provided in the center of the upper plate 4a. The flat plates 4d and 4 extend horizontally outward on both sides from the lower end of the right side portion in FIG. 1 of the side plates 4c and 4c'.
d′ is extended. A capacitor holding shaft 5 is provided substantially perpendicularly downward from the flat plates 4d and 4d'.
5' extends, and capacitors 3 and 3'(3' is not shown) are fixed to the tips of the holding shafts 5 and 5'. On the other hand, guide roll holding shafts 6, 6' extend perpendicularly to the side plates and outward on both sides from the left side portion of the side plates 4c, 4c' in FIG. are mated.

As shown in FIGS. 3a and 3b, the guide rolls 2 and 2' that guide the continuous yarn 11 (FIG. 2) have a pulley-like shape with a V-shaped groove 22 on the outer periphery, and 23 and is fitted to the guide roll holding shafts 6, 6' via bearings 21.

The shapes of the capacitors 3, 3' that guide the fiber bundle 10 (FIG. 1) are shown in FIGS. 4a and 4b. Figure 4a is a plan view of the capacitors 3, 3' viewed from below, and Figure 4b is a line b in Figure 4a.
-b is a cross-sectional view. As is clear from FIG. 4b, a groove 31 is provided on the underside of the capacitors 3, 3' which is substantially U-shaped in cross section and narrows in the flow direction of the fiber bundle. The size of this groove 31 is preferably set to be slightly larger than the thickness of the corresponding roving.

the guide rolls 2, 2' and the condenser 3,
The relative position of 3' with respect to the saddle 4 is determined as follows. That is, in FIG. 1, a straight line passing through the center of the guide surface of the guide roll 2 and parallel to the pendulum arm 1 (indicated by a dashed line in the figure) is A.
If B is a straight line passing through the center of the guide surface of the condenser 3 and parallel to the pendulum arm 1 (indicated by a dashed line in the figure), then in the guide device of the present invention, the straight line A and the straight line B are the same. The guide roll 2 and the condenser 3 are placed in a vertical plane.
The relative position with respect to the saddle 4 is determined.
Respective straight lines A' (not shown) and straight lines corresponding to guide roll 2' and condenser 3'
The relative positions of the guide roll 2' and the condenser 3' with respect to the saddle 4 are determined so that B' (indicated by a dashed line in the figure) is similarly arranged in the same vertical plane. Further, in the guide device of the present invention, the distance between the vertical planes on both sides of the saddle 4 is determined to correspond to the spindle pitch of the spinning machine.

Next, the operation of the guide device of the present invention when it is attached to the pendulum arm 1 will be explained based on FIG. 2. The saddle 4 of the guide device has a middle roller saddle (not shown) fixing screw 14 of the pendulum arm 1 inserted into the elongated hole 4b of the saddle 4.
and is fixed to the pendulum arm 1 by its fixing screw 14. The guide device is then lowered down with the pendulum arm 1 by means of the lever 13 and placed in the drafting device. In this case, the guide rollers 2, 2' and the condensers 3, 3' must be placed at the most appropriate positions in the direction of flow of the fiber bundle. The proper positions of the guide rolls 2, 2' are the guide rolls 2, 2'.
This position is such that the continuous yarn 11 flowing from the roller 2' to the front rolls 9, 9' does not come into contact with the top apron 7, and the contact distance between the front top roller 9' and the continuous yarn 11 is the shortest. This is necessary to prevent the continuous yarn 11 from forming grooves on the surface of the front top roller 9'.
On the other hand, the proper position of the condensers 3, 3' is within the back zone of the draft device and close to the middle rollers 8, 8'. Since the saddle 4 is provided with the elongated hole 4b as described above,
By adjusting the position of the saddle 4 along the longitudinal direction of the pendulum arm 1 through the elongated hole 4b, the guide rolls 2, 2' and the condenser 3,
3' can be easily obtained. If it is necessary to determine the positions of the capacitors 3, 3' more accurately, the mounting position of the capacitors 3, 3' to the saddle 4 may be configured to be adjustable in the longitudinal direction of the saddle 4.

As mentioned above, the guide device is configured so that the guide rolls 2, 2' and the condensers 3, 3' are arranged at their proper positions, and are adjusted and attached to the pendulum arm 1. Guide rolls 2, 2' and condenser 3,
3' is made as short as possible, and as a result, even if the pendulum arm 1 is twisted from side to side, the deviation between the centers of the guide rolls 2, 2' and the centers of the middle rollers 3, 3' can be minimized. can.

The height of the capacitors 3, 3' is preferably set to such an extent that the bottom surface of the groove 31 of the capacitors 3, 3' slightly pushes down the flow of the fiber bundle. In this way, it is possible to prevent the fiber bundle from swinging laterally. In addition, since the capacitors 3 and 3' are open at the bottom, when the pendulum arm 1 is pushed down, the capacitors 3 and 3' cover the fiber bundle in the back zone of the roving 10 from above, changing the position of the fiber bundle. to be fixed. On the other hand, at the same time as the pendulum arm 1 is raised, the condensers 3 and 3' are also raised simultaneously without disturbing the fiber bundle. guide roller 2,
2' also moves up and down together with the pendulum arm 1, pushing the continuous yarn 11 from above and moving it to the proper position towards the front top roller 9'. 11 is not disturbed.

Effects of the invention By using the guide device of the invention, the continuous yarn can be reliably and always placed in the center of the coated fiber bundle, and can be used during dotting work, roving work, or when winding fibers around rollers. The removal work is facilitated, the occurrence of defective yarns due to poor core coverage is reduced, and uniform, high-quality composite yarns can be industrially produced. The effect of the guide device of the present invention is particularly remarkable when a composite spun yarn is spun using a large number of spindles.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the guide device for spinning composite spun yarn of the present invention, and Fig. 2 shows a state in which the guide device shown in Fig. 1 is attached to a pendulum arm and placed in a draft device. Side view showing 3a
The figure is a side view of the guide roll, Figure 3b is a front view of the guide roll, Figure 4a is a plan view of the capacitor seen from below, and Figure 4b is a sectional view taken along line bb in Figure 4a. 1... Pendulum arm, 2, 2'... Guide roller, 3, 3'... Condenser, 4...
Saddle, 4a...Top plate, 4b...Long hole, 4c,
4c'...Side plate, 4d...Flat plate, 5...Condenser holding shaft, 6, 6'...Guide roller holding shaft, 14...Fixing screw, 22...V-shaped groove, 31...U-shaped groove .

Claims (1)

[Claims for Utility Model Registration] 1. A saddle that is repositionably attached to the pendulum arm of a top arm drafting device of a spinning frame, and continuous yarn guide elements for a core that are fixed to the left and right sides of the saddle, respectively; skin covering fiber bundle guide elements fixed to the left and right sides of the saddle at positions upstream of the core continuous yarn guide elements when viewed in the direction of flow of the fiber bundle in the drafting device; A guide device for spinning a composite spun yarn, comprising: the continuous yarn guide element for the core and the coated fiber bundle guide element for the skin each open downward, and the guide device for the fiber bundle in the draft device having a guide surface substantially parallel to the flow direction, the center line of the guide surface of the continuous yarn guide element for the core and the center line of the guide surface of the covered fiber bundle guide element for the skin being aligned with the center line of the guide surface of the continuous yarn guide element for the core, and the center line of the guide surface of the covered fiber bundle guide element for the skin. each side of the saddle is arranged in the same vertical plane substantially parallel to the pendulum arm, and the distance between the vertical planes on both sides of the saddle is determined to correspond to the spindle pitch of the spinning machine. . A guide device for spinning a composite spun yarn, wherein the continuous yarn guide element for the core and the covered fiber bundle guide element for the skin are fixed to a saddle. 2. The attachment portion of the saddle to the pendulum arm extends parallel to the upper surface of the pendulum arm when the saddle is attached to the pendulum arm, and has a slotted hole extending in the longitudinal direction in the center thereof. It consists of an upper plate, and a side plate that hangs down from both side edges of the upper plate and extends downstream when viewed from the flow direction of the fiber bundle in the drafting device, and the distance between the two side plates is equal to the width of the pendulum arm. a core continuous yarn guide device, wherein the continuous yarn guide element fixing portion for the core of the saddle is installed horizontally outwardly on both sides from a downstream portion of the side plate. a flat plate on which the covered fiber bundle guide element fixing portion for the skin of the saddle extends horizontally outwardly on both sides from an upstream portion of the side plate; and a skin fixed at right angles to the flat plate and extending downward. a holding shaft for a covered fiber bundle guide element, and by inserting a middle roller saddle fixing screw of the pendulum arm into an elongated hole of the saddle, the saddle can be repositioned to the pendulum arm. A guide device for spinning a composite spun yarn according to claim 1, which can be attached to the utility model. 3. The utility model registration claim 2, wherein the core continuous yarn guide element is a guide roll attached such that its guide surface is perpendicular to the core continuous yarn guide element holding shaft. Guide device for spinning composite yarn. 4. The guide surface of the guide roll has a substantially V-shaped groove in cross section provided at its peripheral edge, and the guide roll is rotatably attached to the core continuous yarn guide element holding shaft. A guide device for spinning a composite spun yarn according to claim 3, which has been registered as a utility model. 5. The skin covered fiber bundle guide element has its guide surface in a groove having a substantially U-shaped cross section, and the skin covered fiber bundle guide element has an open portion at the tip of the holding shaft. The guide device for spinning a composite spun yarn according to claim 2, which is a capacitor mounted on the lower side.