Wire laying device

Abstract

The invention relates to a thread laying device having 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 connected to a drive device (9). The object of the invention is to lay the thread in a defined and variable manner, which is achieved in that the drive device (9) is designed in the form of a reciprocating linear drive (6), which is connected to the drive end (5) of the guide rod (1) via a coupling (7).

Description

Technical Field

[0001] The invention relates to a wire laying device. Background Art

[0002] When melt spinning produces synthetic silk thread or when processing silk thread in deformation process, silk thread is usually wound into bobbin for storage at the end of processing. For this reason, silk thread is guided back and forth within the bobbin width to be wound, and a cross-winding pattern is obtained to form a bobbin. For this reason, the thread guide is driven in a reciprocating manner so that the silk thread can be wound into a cylindrical or biconical cross-winding bobbin. In order to drive such a thread guide, a thread laying device is known in the prior art, in which the thread guide is arranged on the guide end of the guide rod and the guide rod is driven in a reciprocating manner. Such a thread laying device has long been disclosed by DE1131575A1.

[0003] In known thread laying devices, a guide rod is rotatably mounted on a pivot. In order to drive the thread guide of the guide rod, which is held on the guide end, a drive device engages the opposite drive end of the guide rod. Since the drive end of the guide rod moves along a circular path relative to the pivot, the drive end is driven via a sliding connection with a multi-piece mechanism, which is actuated by a cam disk to produce a uniform back and forth movement. Due to the shape and position of the circumferential groove in the cam disk, the guide end of the guide rod is moved back and forth with a constant laying width. Such a mechanical engagement mechanism is therefore completely unsuitable for guiding the thread with a laying width that is as variable as possible.

[0004] Therefore, only the following wire laying devices have been successful so far, in which the guide rod is held on the driven rod with its drive end. Such systems are disclosed, for example, by DE19960024A1 with an electric drive and by DE1560360A1 with a mechanical drive. However, in all these systems, it is necessary to generate the kinetic energy of the guide rod only by the torque of the drive rod. In this regard, the inertial force of the guide rod acts on the drive rod, so correspondingly high braking and driving energy is required, especially at the reversal point. In addition, accurate angle detection and angle control are required to guide the wire with a variable laying width. Summary of the invention

[0005] It is therefore an object of the present invention to provide a thread depositing device of the generic type in which the guide rod can be driven to and fro precisely and with an easily adjustable depositing width.

[0006] According to the invention, this object is achieved in that the drive device is in the form of a reciprocating linear drive device and the linear drive device is coupled to the drive end of the guide rod via a coupling.

[0007] The invention has the particular advantage that the pivoting movement of the guide rod can be produced only by a straight 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 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.

[0008] In order to transmit the relative mobility between the linear drive and the drive end of the guide rod guided in the circular guide path, a further development of the invention is preferably implemented in which the coupling element is formed by a push rod, which is connected to the drive end of the guide rod via a swivel joint and to the plunger of the linear drive via a second swivel joint. In this way, the linear movement of the linear drive can be transmitted directly to the drive end of the guide rod via the push rod.

[0009] In order to be able to maintain the laying width specified for the thread laying, the linear drive is formed by a pneumatic or hydraulic or electric actuator that linearly guides the plunger back and forth within the stroke. The laying width at the guide end of the guide rod is then limited by the stroke of the linear drive.

[0010] In order to set a specific lay width, the stroke of the actuator is preferably designed to be adjustable. This allows winding different bobbin widths or double-conical bobbins in a simple manner.

[0011] In order to obtain a layout that is as compact as possible, it is preferred to implement the following improved solution of the present invention, in which the guide end of the guide rod is formed at the end of the guide arm, the drive end of the guide rod is formed at the end of the drive arm, the pivot is arranged in the area between the guide arm and the drive arm, and the angle between the guide arm and the drive arm is in the range of 50° to 180°. It is therefore particularly possible that an L-shaped guide rod is used to convert the stroke movement of the linear drive device into a pivoting movement of the guide end.

[0012] In order to be able to produce a relatively large laying width with the minimum possible stroke, the following improvement of the present invention is provided, the length that the guide arm has is several times the length of the drive arm. In this way, the lever law can be used to produce the maximum possible laying width with a relatively small stroke.

[0013] The following development of the invention is particularly advantageous for the reproducibility and adjustability of the deposit width at the guide end, wherein the wire deposit width is derived from the following calculation formula based on the stroke of the linear drive and the guide rod length geometry: V = (L F / L A )×H.

[0014] Here, the laying width is indicated by V and the guide arm length is indicated by L. F The length of the drive arm is indicated by L A The stroke of the linear drive device is indicated by H.

[0015] Therefore, for each adjustable stroke of the linear drive, the deposit width obtained when depositing the thread can be determined in advance. In particular, in order to realize stroke variations and asymmetrical packages, the deposit width can be determined accordingly in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The thread laying device of the present invention will be explained in more detail below based on several embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 A view schematically showing a first embodiment of the device for laying a thread according to the invention,

[0018] Figure 2 A view schematically shows another exemplary embodiment of the device for depositing a thread according to the invention. DETAILED DESCRIPTION

[0019] Figure 1 A first embodiment of the device for laying a thread according to the invention is schematically shown. This embodiment comprises 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 guide rod 1 in the area between the guide arm 1.1 and the drive arm 1.2. For this purpose, the guide rod 1 is L-shaped, 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 Figure 1 In contrast, the drive arm 1.2 has an effective length of Figure 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.

[0020] The guide end 2 of the guide arm 1.1 has a thread guide 3. The drive arm 1.2 is connected to a drive device at the drive end 5. In this embodiment, the drive device 9 is formed by a linear drive 6, which has an actuator 6.1 and a plunger 6.2. An engagement element 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. For this purpose, the push rod 7 is connected to the drive end 5 of the drive arm 1.2 via a swivel joint 8.1. The push rod 7 is connected to the plunger 6.2 of the linear drive 6 via a second swivel joint 8.2.

[0021] A control unit 10 is assigned to the actuator 6.1. The guiding speed and the stroke of the actuator 6.1 can be controlled by the control unit 10. For this purpose, the actuator 6.1 can have pneumatic, hydraulic or electric means for driving the plunger 6.2.

[0022] In operation, the linear drive 6 is used to introduce a reciprocating drive movement 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 at a rotation angle about the pivot 4. This rotational movement is transmitted to the guide arm 1.1. The pivot angle of the guide arm 1.1 and thus the lay width covered by the guide end 2 of the guide rod 1 in a reciprocating manner and corresponding to the package width, for example, is Figure 1 In the bobbin surface shown in dotted form, the reference symbol V is indicated. In this embodiment, the bobbin is designated by the reference symbol 11. The laying width V, with 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 average value and the amplitude of the plunger movement H(t) can be set here. In this way, the stroke change and the landing position along the laying width V can be set. The stroke H thus forms an adjustment mechanism for influencing and changing the laying width of the guide end 2. Due to the geometric relationship between the drive arm 1.2 and the guide arm 1.1, the laying width V can be predetermined by means of the stroke H of the linear drive 6. To this end, the following conditions apply: V=(L F / L A )×H.

[0023] In this respect, the deposit 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. The deposit width can also be varied during the winding of the package, for example to achieve a change in the stroke or a specific shape of the package.

[0024] exist Figure 1 In the embodiment of the present invention, the linear drive device 6 generates a vertical reciprocating motion to drive the guide rod 1. Alternatively, the linear drive device 6 can also perform a horizontal motion. Figure 2 An embodiment is shown in FIG. Figure 2 The structure and basis of the embodiment of Figure 1 The structures of the embodiments are the same, so only the differences are explained here, and for other aspects, refer to the above description.

[0025] exist Figure 2 In the embodiment of the invention, the guide rod has a guide arm 1.1 and a drive arm 1.2, which form an angle α of 180° between them. In this regard, the guide rod 1 is straight, and the pivot 4 is arranged between the guide arm 1.1 and the drive arm 1.2.

[0026] The drive device 9 is connected to the drive end 5 of the drive arm 1.2. In this embodiment, the drive device 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 connected to the drive end 5 of the guide rod 1 via a push rod 7. The push rod 7 is therefore connected to the drive arm 1.2 by means of a swivel joint 8.1 and to the plunger 6.2 by means of a second swivel joint 8.2. The plunger 6.2 is guided back and forth in the horizontal direction within a stroke H by the actuator 6.1. For this purpose, the actuator 6.1 is controlled by the control unit 10. In this case, the push rod 7 forms a joint to allow 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 connection between the linear drive 6 and the guide rod 1 in any position.

[0027] exist Figure 1 and Figure 2 In the embodiment of the embodiment, a thread laying device which can be used, for example, in a thread winding station is shown. However, in principle, multiple guide rods 1 can also be assigned to the linear drive so that multiple yarns can be wound in parallel to form a bobbin. In this regard, the plunger 6.2 of the actuator 6.1 can be connected to multiple guide rods via multiple couplings.

Claims

1. A thread laying device, comprising a pivotable guide rod (1), the guide rod (1) having a drive end (5) and a guide end (2) with a thread guide (3), and the guide rod (1) is rotatably mounted on a fixed pivot (4), in, The driving end (5) of the guide rod (1) is coupled to a driving device (9), wherein the driving device (9) is in the form of a reciprocating linear driving device (6), and the linear driving device (6) is coupled to the driving end (5) of the guide rod (1) via a coupling, wherein the coupling is formed by a push rod (7), wherein the push rod (7) is coupled to the driving end (5) of the guide rod (1) via a swivel joint (8.1) and is coupled to a plunger (6.2) of the linear driving device (6) via a second swivel joint (8.2), and wherein the stroke H of the actuator (6.1) is designed to be adjustable so as to set a laying width V of the guide end (2).

2. The device according to claim 1, Its characteristics are: The linear drive (6) is formed by a pneumatic, hydraulic or electric actuator (6.1) which linearly guides the plunger (6.2) back and forth within a stroke H.

3. The device according to claim 1, Its characteristics are: 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) is arranged in the area 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) is in the range of 50° to 180°.

4. The device according to claim 3, Its characteristics are: The guide arm (1.1) has an effective length L F is the effective length L of the drive arm (1.2) A multiples of.

5. The device according to claim 4, Its characteristics are: The laying width V for laying the thread is derived from the following calculation formula based 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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