TEXTILE MACHINES THAT PRODUCE TAKE-UP PACKAGES

Abstract

A textile machine that produces take-up packages with control valves 1, whereby the control valves 1 each have a valve body 2, a piston 3 and a plunger 4, whereby the plunger 4 comprises a front seal seat 5 and a rear seal seat 6 as well as seals 9, with which outlets, such as a main line 14, a pilot line 19, a connection 16 and at least one vent 15 are alternately sealable in the valve body 2, and the piston 3 has a piston seal 8 that separates two air circuits from each other. Contact surfaces 11 are designed in the valve body, at which the corresponding surfaces 12 of the front and rear seal seats 5, 6 of the plunger 4 can be brought into abutment.

Claims

1. A textile machine that produces take-up packages with control valves (1), whereby the control valves (1) each have a valve body (2), a piston (3) and a plunger (4), whereby the plunger (4) comprises a front seal seat (5) and a rear seal seat (6) as well as seals (9), with which outlets, such as a main line (14), a pilot line (19), a connection (16) and at least one vent (15) are alternately sealable in the valve body (2), and the piston (3) has a piston seal (8) that separates two air circuits from each other, characterized in that contact surfaces (11) are designed in the valve body (2), at which the corresponding surfaces (12) of the front and rear seal seats (5, 6) of the plunger (4) can be brought into abutment.

2. The textile machine that produces take-up packages according to claim 1, characterized in that the surfaces (12) corresponding to the seals (9) have a conical design.

3. The textile machine that produces take-up packages according to claim 1, characterized in that the piston (3) and the plunger (4) are designed in two pieces.

4. The textile machine that produces take-up packages according to claim 1, characterized in that a supporting element (10) is available that is positioned so that the piston (3) is secured to the plunger (4) and the piston seal (8) can be affixed to the piston (3).

5. The textile machine that produces take-up packages according to claim 1, characterized in that a connection designed as a bottleneck is integrated between the main line (14) and pilot line (19) in the plunger (4).

6. The textile machine that produces take-up packages according to claim 5, characterized in that the bottleneck in the plunger (4) is designed with a separate fixed throttle (13).

7. The textile machine that produces take-up packages according to claim 1, characterized in that the seals (9) are designed as O-rings.

8. The textile machine that produces take-up packages according to claim 1, characterized in that the supporting element (10) can be attached to the plunger (4) without destruction and unattached.

9. The textile machine that produces take-up packages according to claim 1, characterized in that the control valve (1) is designed as an individual or multiple unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Preferred embodiment examples of the invention are explained in more detail below on the basis of the enclosed drawings. The drawings show:

[0039] FIG. 1 is a schematic representation of a control valve with closed front valve seat;

[0040] FIG. 2 is a schematic representation of a control valve with closed rear valve seat;

[0041] FIG. 3 is a schematic representation of an embodiment example of a supporting element according to the invention;

[0042] FIG. 4 a schematic representation of a part of the plunger with the piston and supporting element positioned next to it.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] In FIG. 1, as an example a schematic view of the structure of a control valve 1 with closed front seal seat 5 is shown.

[0044] The control valve 1 comprises a valve body 2 as well as a piston 3 and a plunger 4. Below the piston 3 a piston seal 8 separates the two air circuits or the front chamber 17 and the rear chamber 18.

[0045] A supporting element 10 is in turn positioned below the piston seal 8. Through the supporting element 10, not only is the piston 3 secured on the plunger 4, but also the piston seal 8 is affixed to the piston 3.

[0046] Moreover, valve body 2 (divided into three in this embodiment example) has contact surfaces 11, at the corresponding surfaces 12, that are designed at the front and rear seal seats 5, 6 of the plunger 4, that can be transported to the system.

[0047] Air flows through a continuous axis bore hole with a small diameter via the main line 14 through the plunger 4 into the rear chamber 18. The axis bore hole or the small diameter is designed in such a way as regards flow technology that a throttle function is enabled. The piston 3 pushes into the front position due to the large rear effective area and seals the conical front seal seat 5 by means of a seal 9, designed in this embodiment example as an O-ring.

[0048] In this example, the corresponding surfaces 12 of the front seal seat 5 are transported to the system at the contact surfaces 11 in the valve body, so that the O-ring of the front seal seat 5 is subject to a defined maximum deformation and cannot be squeezed into the seal seat.

[0049] This means that no air can flow into the connection 16, to which, for example, a simple pneumatic cylinder is connected and the pneumatic cylinder can travel into its operating position via a vent 15.

[0050] FIG. 2 shows the control valve 1 with closed rear seal seat 6. In contrast to FIG. 1, in this embodiment example a fixed throttle 13 is attached to the plunger 4, through which air streams into the rear chamber 18.

[0051] In the case of a yarn break, for example, the control valve 1 should be switched. The pre-control line 19 is released, i.e. opened, at the control valve 1 via a (not shown) pre-control valve. The pressure in the rear chamber 18 reduces, because more air flows out than can flow in via the fixed throttle 13 into the plunger 4, which means that the piston 3 moves to the rear, the conical front seal seat 5 opens, releases the path of the main air through the front chamber 17 to the connection 16 to the pneumatic cylinder and the piston 3 moves against the (also conical) rear seal seat 6, causing the entry to the vent 15 to close.

[0052] In this example, the corresponding surfaces 12 of the rear seal seat 6 are transported to the system at the contact surfaces 11 in the valve body 2, so that the O-ring of the rear seal seat 6 is subject to a defined maximum deformation and cannot be squeezed into the seal seat.

[0053] After the yarn break has been remedied and the yarn position restarted, the front control line 19 is closed again. As described above, pressure builds up again in the rear chamber 18 and the piston 3 moves to the front operating position once again as described above.

[0054] FIG. 3 shows an example of a supporting element 10 according to the invention. The supporting element 10 is designed as a clamp here, that can be pushed into a corresponding nut 7 of the plunger 4. In this way, the piston seal 8 can be attached easily and without a tool to the piston 3. In order to ensure that the supporting element 10 can be clicked out of the nut 7 of the plunger 4 again, replacement or renewal of the piston seal 8 is possible. In addition, the piston 3 is secured to the plunger 4 through the supporting element 10.

[0055] FIG. 4 shows a schematic representation of a part of the plunger 4 with the piston 3 positioned next to it. The piston seal 8 is positioned below the piston 3. The supporting element 10 is latched onto a nut 7, that is present in the plunger 4, which ensures on the one hand the proper positioning of the piston 3 at the plunger 4, and on the other hand attaches the piston seal 8 to the piston 3.

LIST OF DRAWING REFERENCES

[0056] 1 Control valve [0057] 2 Valve body [0058] 3 Piston [0059] 4 Plunger [0060] 5 Front seal seat [0061] 6 Rear seal seat [0062] 7 Nut [0063] 8 Piston seal [0064] 9 Seal [0065] 10 Supporting element [0066] 11 Contact surface [0067] 12 Corresponding surface [0068] 13 Fixed throttle [0069] 14 Main line [0070] 15 Vent [0071] 16 Pneumatic cylinder connection [0072] 17 Front chamber [0073] 18 Rear chamber [0074] 19 Pilot line

[0075] It will therefore be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those herein described, as well as many variations, modifications and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing description thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to its preferred embodiment, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for purposes of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended or to be construed to limit the present invention or otherwise to exclude any such other embodiments, adaptations, variations, modifications and equivalent arrangements.