JPH0663149B2 - Twisting device for yarn feeding - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for unwinding a yarn from a yarn supply package while imparting a predetermined twist to the yarn, and more particularly to accurately measuring the number of twists per unit length. The present invention relates to a twisting device suitable for use when a yarn is to be maintained.

(Prior Art) As a conventional twisting device for yarn feeding, a flyer-type up twister and a double twister are known. In both of the above-mentioned conventional devices, the additional value of untwisting twist depends on the size of the yarn feeding package Since it is different, it is difficult to keep the number of twists strictly constant, and it is also difficult to obtain an arbitrary number of twists from the untwisted state with the same device.

For example, a conventional flyer-type up-twister is one in which a yarn feeding package supported on a twisting yarn spindle is rotated to pull the yarn in the axial direction while ballooning the yarn through a flyer. Since the untwisting twist that occurs when the yarn is unwound is added and the yarn withdrawal speed is always kept constant, the number of untwisted twists per unit time is different when the diameter of the yarn supply package is large and when it is small. There is a problem such as variation in twist. Therefore, in order to overcome this problem, the present applicant supports the yarn feeding package on a spindle that is rotatably supported by a machine frame, covers the outer periphery thereof and is concentric with the spindle. A cage that is rotatably supported is installed on the spindle, and a brake that controls free rotation is applied to the spindle and the cage is positively driven at a predetermined speed by an electric motor. After the yarn is pulled out from the yarn supply package along the outer peripheral surface of the basket, the traverse vibration is gradually reduced, and the yarn is taken out from the axial front face of the spindle through the traverse fulcrum rotator and ballooned. A twisting device for yarn feeding was proposed previously so that the yarn can be pulled out while being pulled out. (See Japanese Patent Application Laid-Open No. 59-53727) (Problems to be Solved by the Invention) In the yarn twisting device for yarn feeding proposed above, the braking force acts on the spindle supporting the yarn feeding package. There is a problem in that the brake wears on the brake part due to slippage at a speed that includes the rotation of the basket and the relative rotation of the basket and the yarn feeding package due to the withdrawal of the yarn.

Further, in the above-mentioned twisting device for yarn feeding, since the member for transmitting power is not interposed between the basket and the yarn feeding package, the yarn can be relatively rotated, so that when the basket is started, the yarn feeding is performed. There is a problem in that excessive tension acts on the yarn drawn from the yarn supplying package due to the inertial action of the package.

(Means for Solving the Problems) In view of the above, the present invention has been made to overcome the problems of the yarn twisting device for yarn feeding proposed by the present applicant, and the yarn feeding package can be freely rotated on the spindle. A cylindrical basket having a plurality of rotation guide rolls which are supported on the outer periphery of the basket and have a plurality of rotation guide rolls parallel to the axis line on the periphery, and a brake for controlling relative rotation between the basket and the yarn supplying package. While positively driving and rotating by the electric motor while operating, the yarn drawn from the yarn feeding package to the outer surface of the basket and hung on the rotation guide roll to wrap the yarn along the outer circumferential surface of the basket is deflected in the axial direction. A plurality of yarn feeding yarns, characterized in that a traverse fulcrum trochanter for guiding to the front of the basket is provided, and a roller for diverting the guided yarn forward along the axis of the spindle is provided on the front of the basket. Package In order to apply the yarn drawn from the yarn to the yarn while twisting the yarn, a plurality of yarn supplying packages are supported on the spindle, and a brake that controls relative rotation is applied between each yarn supplying package and the basket. At the same time, a plurality of traverse fulcrums corresponding to each yarn feeding package are provided on the outer surface of the basket.

(Working) In the twisting device for yarn feeding according to the present invention, as shown in the drawing of the embodiment, the yarn Y drawn from the yarn feeding packages (9) and (9 ') is moved to the basket (4) as shown in FIG. ) Is wound around the outer surface of the basket (4) once along the outer surface of the guide roll (4d) arranged on the outer peripheral surface of the (4), and then is turned forward by the traverse fulcrum rotator (15) (15 '). Then, when the basket (4) is rotated at a constant speed by the pulley (13) by setting the route to the roller (20) through the guide trochanter (16), the yarn feeding package (9) (9 ')
Also, the yarn Y is pulled out through the above-mentioned path by rotating, and at this time, the holders (5) and (5 ') rotate in the same direction according to the unwinding amount of the yarn Y, and the holder (5) ( Brake pieces (11) and (22) are loaded on the 5 ') as brakes, and the yarn Y
The yarn Y to be unwound becomes gradually unsteady as it goes through the outer peripheral route of the basket (4), and the yarn swings toward the traverse fulcrum trochanters (15) (15 '). It is turned forward in the axial direction of (4), passed through the guide rotator (16) and pulled out from the roller (20) in the axial direction of the spindle (3), and then twisted and taken up.

In addition, a plurality of yarn feeding packages (9) are attached to the spindle (3).
When carrying (9 ') and pulling out the yarn, the traverse fulcrum rotator (15) (1) corresponding to each yarn feeding package (9) (9')
A plurality of yarns Y are combined from 5 ') toward the guide trochanter (16) and the roller (20), and twisting is performed at the portion pulled out from the roller (20).

(Example) An example of the present invention will be described with reference to the drawings in which two yarns are twisted together while being combined.

In the drawing, (1) is a twisting device for yarn feeding, which is axially supported by a machine frame (2), and the twisting device (1) is a spindle (rotatably mounted on a bearing (7) via a bearing (6) ( 3)
A basket (4) whose one end is supported by a flange (8) to the spindle, and holders (5) (5 ') for holding the yarn feeding packages (9) (9') attached to the spindle. Composed, the holder (5) on the flange (8)
The brake piece (11) pushed by the compression spring (10) is actuated so as to control the free rotation of (5 '), and the basket (4) is rotated at a constant speed by a pulley (13) by a motor (not shown). Driven.

As shown in FIG. 1, the cage (4) is an annular body (4a) provided concentrically with the flange (8) fixed to the spindle (3) and an annular body (4b) concentrically opposed thereto. And are integrally connected with spokes (4d) at multiple locations on the periphery to form a hollow cylindrical cage shape open on the side of the torus (4b), and further toroid (4a)
A plurality of guide rolls (4c) are rotatably arranged parallel to the spindle (3) at equal intervals in the circumferential direction between the ring and the annular body (4b), and the traverse fulcrum is supported on the spoke (4d). Trochanter (15)
(15 ') is axially attached, and at the outer end of the annular body (4b), a guide trochanter (16) is provided at the axial position of the cage (4) corresponding to the trochanters (15) and (15'). The shaft is supported, and the bracket (17) is rotatably held by the ring (4b) on the shaft (30), and the tip of the bracket (17) is aligned with the tangent line of the groove bottom to the axis line of the spindle (3). , The roller (20) was rotatably attached.

The tip of the bracket (17) has a spindle (3).
Insert the pin (18) that can be removed and inserted into the brake piece (21) fixed to the tip of the pin (18), connect it, and insert the ball (19) into the groove of this pin (18) with a spring to secure the pin (18). Stopped escape. The brake piece (21) is provided with a brake piece (22) acting by a spring to control the free rotation of the holder (5).

(23) is the case of the bearing which is fitted in the spindle.
(24) is a cone guide bolted to the bearing case (23), (25) is a cone that moves axially above it, (26) is a spring that repels the cone, and (27) is a bobbin (29). With a plate-shaped holder plate to support (28)
Is an annular spring band that clamps the plate inward with a recess in the center of the outside, and this holder is installed on two spindles.

Pull out the pin (18), release the lock, rotate the bracket (17) to open the ring (4b) side of the basket (4), and insert the packages (9) and (9 ') into the holder. Corn (25)
Moves by compressing the spring (26), the holder plate (27) moves inward, and the bobbin (29) is inserted into the holder (5).

In the above example, two yarn feeding packages (9)
The case has been described in which the yarns Y drawn from (9 ') are combined and twisted and supplied, but the twisting device for yarn feeding of the present invention naturally twists the yarns drawn from one yarn feeding package. It can also be applied when hanging.

(Effect of the invention) According to the present invention, the twisted yarn has a precisely constant number of twists, and movement of the twist, that is, rolling of the yarn does not occur even when applied with tension, so that extremely stable mechanical properties are exhibited. When it is obtained and is an intermediate step in the thread processing step, it is extremely easy to untwist the thread after processing, and if the drawing speed of the thread is always constant, twisting is performed under a certain number of rotation conditions, One twist can be given to the yarn for each rotation of the basket, and accurate twist can be given without changing the number of twists given to the yarn depending on the size of the yarn supply package, and a stable twisted yarn can be obtained. When the rotation of the basket is stopped, a non-twisted yarn can be drawn out, and the same device can draw the yarn in a non-twisted state or a predetermined number of twisted yarns.

Further, since the yarn is fed along the axis of the spindle by the rollers on the front of the basket, even if the thickened yarn is fed, the yarn is smoothly fed without causing pruning, which is extremely useful as a twisting device for yarn feeding. Has the effect of being.

In addition, in the present invention, a brake that controls relative rotation is applied between the basket and the yarn supplying package, and the yarn is pulled out from the yarn supplying package by the brake, so that appropriate tension is applied to the yarn. The minimum speed of sliding required for pulling out the basket acts to significantly reduce the wear, and when the basket is started, the rotation force of the basket is transmitted to the yarn supply package via the brake, so the yarn supply package There is an effect that a sudden tension does not act on the yarn drawn out from the yarn and the occurrence of yarn breakage can be prevented in advance.

Further, in configuring the present invention as a plied yarn device, when a brake is applied between the basket and each yarn supplying package, even if a slight difference in diameter occurs between the packages, the solution of both systems is solved. The effect of being able to carry out a stable ply-twisted yarn action in combination with the action of the roller on the front surface of the basket is exerted without causing an extreme change in the set tension balance.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a side view and FIG. 2 is a front end view. (1) ...... Twisting device (2) …… Machine frame (3) …… Spindle (4) …… Basket (4c) …… Guide roll (5) (5 ') …… Yarn supply package holder (9) ( 9 ') ...... Yarn supply package (11) (22) ...... Brake (15) (15') ...... Traverse fulcrum trochanter (20) ...... Roller

Claims (2)

[Claims] 1. A cylindrical basket having a plurality of rotation guide rolls rotatably supported on a spindle, covering the outer periphery of the spindle, and having a plurality of rotation guide rolls parallel to the axis line on the periphery, and the basket is the above-mentioned. While the brake that controls the relative rotation with the yarn supplying package is actuated, it is positively driven and rotated by an electric motor, and is pulled out from the yarn supplying package to the outer surface of the basket and wound around the rotation guide roll to form an outer circle of the basket. A traverse fulcrum trochanter that guides the yarn along the circumferential direction in the axial direction to guide it to the front surface of the basket is provided, and a roller that guides the guided yarn forward along the axis of the spindle is provided. A twisting device for yarn supply, which is provided on the front surface. 2. A plurality of yarn feeding packages are supported on a spindle, a brake for controlling relative rotation is applied between each yarn feeding package and the basket, and each yarn feeding package is provided on the outer surface of the basket. The twisting device for yarn feeding according to claim 1, wherein a plurality of traverse fulcrum rotors are provided.