CN115335308A - Wire laying device - Google Patents

Abstract

The invention relates to a wire laying device with a pivotable guide rod (1). The guide rod (1) has a guide end (2) with a thread guide (3) and a drive end (5), and the guide rod (1) is rotatably mounted on a fixed pivot (4). In order to drive the guide rod (1), the drive end (5) of the guide rod is engaged to a drive device (9). The object of the invention is to lay the wire in a defined and variable manner, which is achieved in that the drive (9) is designed in the form of a reciprocating linear drive (6), which is coupled to the Drive end (5) of guide rod (1).

Description

Wire laying device

The invention relates to a wire laying device according to the preamble of claim 1 .

When producing synthetic yarns by melt spinning or when handling yarns during texturing, the yarns are usually wound into bobbins for storage at the end of the process. For this, the thread is guided back and forth within the width of the bobbin to be wound, resulting in a cross-wound pattern to form the bobbin. For this, the yarn guide is driven in a reciprocating manner, so that the yarn can be wound into cylindrical or biconical cross-wound bobbins. In order to drive such thread guides, thread laying devices are known in the prior art, in which case the thread guide is arranged on the guide end of a guide rod and the guide rod is driven back and forth. Such a wire laying device has long been disclosed by DE1131575A1.

In known wire laying devices, the guide rod is rotatably mounted on a pivot. To drive the thread guide held on the guide end of the guide rod, the drive means engages the opposite drive end of the guide rod. Because the drive end of the guide rod moves relative to the pivot along a circular path, the drive end is driven through a sliding connection to a multi-piece mechanism that is actuated by the cam disc to produce a uniform back and forth motion. Because of the shape of the circumferential groove in the cam disc and its position, the guide end of the guide rod is moved back and forth with a constant lay width. Such a mechanical coupling is therefore completely unsuitable for guiding the wire with as variable a lay width as possible.

So far, only wire laying devices have been successful in which the guide rod is held with its drive end on the driven rod. Such a system is known, for example, from DE 19960024 A1 with an electric drive and from DE 1560360 A1 with a mechanical drive. But in these systems, it is necessary to generate the kinetic energy of the guide rod only by the torque of the drive rod. In this respect, the inertial forces of the guide rod act on the drive rod, so that a correspondingly high braking and driving energy is required, especially at the point of reversal. Furthermore, accurate angle detection and angle control are required to guide the wire with variable lay width.

It is therefore an object of the present invention to provide a wire depositing device of this type, in which the guide rod can be driven back and forth precisely and with an easily adjustable deposit width.

This object is achieved according to the invention in that the drive is in the form of a reciprocating linear drive and the linear drive is coupled to the drive end of the guide rod via a joint.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention has the particular advantage that the pivoting movement of the link can be produced only by a rectilinear linear movement. A simple joint is provided between the linear drive and the guide rod for transmission to the drive end of the guide rod which is guided along a circular path, thereby ensuring relative mobility between the guide rod and the linear drive. In this regard, the guide rod can be pivoted by the linear drive in a fast and extremely precise manner.

In order to transmit the relative mobility between the linear drive and the drive end of the guide rod which is guided in a circular guide path, the following development of the invention is preferably implemented in that the joint is formed by a push rod which is held via a swivel joint A plunger coupled to the drive end of the guide rod and linearly driven through a second swivel joint. In this way, the linear motion of the linear drive can be transmitted directly via the push rod to the drive end of the guide rod.

In order to be able to maintain the prescribed laying width for the wire laying, the linear drive is formed by a pneumatic or hydraulic or electric actuator linearly guiding the plunger back and forth within the stroke. The laying width at the guide end of the guide bar is then defined by the stroke of the linear drive.

In order to set a specific laying width, the stroke of the actuator is preferably designed and synthesized to be adjustable. This allows winding different package widths or bi-conical packages in a simple manner.

In order to obtain an arrangement as compact as possible, it is preferable to realize the following development of the invention, here, the guide end of the guide rod is formed at the end of the guide arm, the driving end of the guide rod is formed at the end of the drive arm, and the pivot is arranged between the guide arm and the end of the drive arm. In the region between the drive arms, the angle enclosed between the guide arm and the drive arm is in the range of 50° to 180°. It is therefore especially possible to use an L-shaped link for converting the stroke movement of the linear drive into a pivoting movement of the guide end.

In order to be able to produce a relatively large laying width with the smallest possible stroke, a development of the invention provides that the guide arm has a length that is several times the length of the drive arm. In this way, the law of leverage can be used to produce the largest possible laying width with relatively small strokes.

The following improvement of the invention is particularly advantageous for the reproducibility and adjustability of the laying width at the guide end. Here, the wire laying width comes from the following calculation formula according to the stroke of the linear drive and the length geometry of the guide rod: V=( L _F /L _A )×H.

Here, the laying width is denoted by V, the length of the guide arm by LF, the length of the drive arm by _{L A and} the stroke of the linear drive by H.

Thus, for each settable travel of the linear drive, the resulting laying width when laying the wire can be determined in advance. In particular, in order to realize stroke variations and asymmetrical bobbins, the lay width can be determined accordingly in advance.

The wire laying device of the present invention will be explained in more detail based on several embodiments with reference to the accompanying drawings, in which:

Figure 1 schematically shows a view of a first embodiment of a device for laying wire according to the invention,

FIG. 2 schematically shows a view of another embodiment of the device for laying wires according to the invention.

FIG. 1 schematically shows a first embodiment of the device for laying wire according to the invention. This embodiment has a guide rod 1 which is formed by a guide arm 1.1 and a drive arm 1.2. The guide rod 1 is rotatably mounted on a fixed pivot 4 . The pivot 4 is arranged on the link 1 in the region between the guide arm 1.1 and the drive arm 1.2. For this purpose, the guide rod 1 has an L-shaped configuration, so that there is an angle α between the guide arm 1.1 and the drive arm 1.2. In this case, the angle α can be formed between 50° and a maximum of 180°. The guide arm 1 . 1 of the guide rod 1 has an effective length, which is indicated by the reference symbol LF in FIG. 1 . In contrast, the drive arm 1 . 2 has an effective length which is indicated by the reference LA in FIG. 1 . In this case, the length LF of the guide arm 1.1 is several times the effective length LA of the drive arm 1.2. The effective lengths LF and LA relate to the pivot 4 as pivot point and the pivot point 8 . 1 on the drive arm 1 . 2 and also the guide end 2 .

The guide end 2 of the guide arm 1.1 has a thread guide 3. The drive arm 1.2 is coupled at the drive end 5 to the drive means. In this embodiment, the drive 9 is formed by a linear drive 6 with an actuator 6.1 and a plunger 6.2. A joint in the form of a push rod 7 is arranged between the plunger 6.2 and the drive end 5 of the drive arm 1.2. To this end, the push rod 7 is coupled to the drive end 5 of the drive arm 1.2 via a swivel joint 8.1. The push rod 7 is coupled to the plunger 6.2 of the linear drive 6 via a second swivel joint 8.2.

The control unit 10 is assigned to the actuator 6.1. The guiding speed and stroke of the actuator 6.1 can be controlled by the control unit 10. To this end, the actuator 6.1 can have pneumatic, hydraulic or electric means for driving the plunger 6.2.

In operation, the linear drive 6 is used to introduce a reciprocating drive motion at the drive end 5 of the drive arm 1 . 2 of the guide rod 1 . In this way, the drive arm 1 . 2 is guided back and forth about the pivot 4 with a swivel angle. This pivoting movement is transmitted to the guide arm 1.1. The pivoting angle of the guide arm 1.1 and thus the laying width which the guide end 2 of the guide rod 1 traverses in a reciprocating manner and which corresponds, for example, to the bobbin width is indicated in FIG. V said. In this embodiment, the cartridge is designated by reference numeral 11 . The lay width V over which the thread is guided by the thread guide 3 at the guide end 2 of the guide rod 1 depends on the respective set stroke of the linear drive 6 . In particular, the mean value and magnitude of the plunger movement H(t) can be set here. In this way, the stroke variation and the landing position along the laying width V can be set. The stroke H thus forms an adjustment mechanism for influencing and varying the lay width of the guide end 2 . Due to the geometric relationship between the drive arm 1.2 and the guide arm 1.1, the lay width V can be predetermined by means of the stroke H of the linear drive 6 . For this, the following condition applies: V=( _{L F} /LA )×H.

In this respect, the lay width V can be determined for each stroke H by means of the rod geometry of the guide rod 1 . The stroke of the linear drive 6 is set by the control unit 10 . Here, too, the lay width can be varied during the winding of the bobbin in order to obtain, for example, a path change or a specific shape of the bobbin.

In the embodiment of FIG. 1 , the linear drive device 6 generates a vertical reciprocating stroke motion to drive the guide rod 1 . Alternatively, however, the linear drive 6 can also perform a horizontal stroke movement. An exemplary embodiment is shown in connection with this in FIG. 2 . The structure of the embodiment of FIG. 2 is the same as that of the embodiment according to FIG. 1 , so only the differences are explained here, otherwise reference is made to the above description.

In the embodiment of FIG. 2 the guide rod has a guide arm 1.1 and a drive arm 1.2 forming an angle α of 180° between them. In this regard, the guide rod 1 has a straight shape and the pivot 4 is arranged between the guide arm 1.1 and the drive arm 1.2.

The drive means 9 is connected to the drive end 5 of the drive arm 1.2. In this exemplary embodiment, the drive 9 also has a linear drive 6 which is formed by an actuator 6.1 and a plunger 6.2. The plunger 6 . 2 is coupled to the drive end 5 of the guide rod 1 via a push rod 7 . The push rod 7 is thus coupled to the drive arm 1.2 by means of the swivel joint 8.1 and to the plunger 6.2 by means of the second swivel joint 8.2. The plunger 6.2 is guided back and forth within the stroke H in the horizontal direction by the actuator 6.1. To this end, the actuator 6 . 1 is controlled by the control unit 10 . In this case, the push rod 7 forms a joint allowing a relative movement between the plunger 6.2 in a linear path and the drive end 5 in a circular path. The swivel joints 8.1, 8.2 ensure a secure coupling between the linear drive 6 and the guide rod 1 in any position.

In the embodiments of FIGS. 1 and 2 a wire laying device is shown which can be used, for example, in a wire winding station. In principle, however, it is also possible to assign several guide rods 1 to the linear drive in order to be able to simultaneously wind several yarns in parallel to form bobbins. In this regard, the plunger 6.2 of the actuator 6.1 may be coupled to guide rods via joints.

Claims (7)

1. A wire placement device having a pivotable guide bar (1), the guide bar (1) having a drive end (5) and a guide end (2) with a wire guide (3) and the guide bar (1) being mounted rotatably on a stationary pivot (4), wherein the drive end (5) of the guide bar (1) is coupled to a drive (9), characterized in that the drive (9) is in the form of a reciprocating linear drive (6) and the linear drive (6) is coupled to the drive end (5) of the guide bar (1) by means of an engagement (7).

2. Device according to claim 1, characterized in that the coupling is formed by a push rod (7), which push rod (7) is coupled to the drive end (5) of the guide rod (1) by means of a swivel joint (8.1) and to a plunger (6.2) of the linear drive (6) by means of a second swivel joint (8.2).

3. Device according to claim 2, characterized in that the linear drive (6) is formed by a pneumatic or hydraulic or electric actuator (6.1) that linearly guides the plunger (6.2) back and forth within the stroke (H).

4. A device according to claim 3, characterized in that the stroke (H) of the actuator (6.1) is designed to be adjustable to set the deposit width (V) of the leading end (2).

5. Device according to any one of claims 1 to 4, characterized in that the guide end (2) of the guide rod (1) is formed on the end of a guide arm (1.1) and the drive end (5) of the guide rod (1) is formed on the end of a drive arm (1.2), the pivot (4) being arranged in the region between the guide arm (1.1) and the drive arm (1.2), and the angle (α) enclosed between the guide arm (1.1) and the drive arm (1.2) being in the range from 50 ° to 180 °.

6. Device according to claim 5, characterized in that the guide arm (1.1) has an effective length (L) _F ) Is the effective length (L) of the driving arm (1.2) _A ) Multiple times of (a).

7. The device according to claim 6, characterized in that the laying width (V) for laying the threads is derived from the following formula depending on the stroke (H) of the linear drive (6) and the length geometry of the guide rod (1): v = (L) _F /L _A )×H。

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