Device for oiling a moving yarn

Abstract

A device for oiling a moving yarn includes a controller, a housing, an oil port provided in the housing, and a dosing pump arranged in the housing. A yarn guiding device with an oil transfer element is mounted in the housing. The oil transfer element is connected to the oil port by an oil feed channel via the dosing pump. A closure element and a flow sensor are provided in the oil feed channel. The oil feed channel has a first portion from the oil port to the dosing pump, a second portion from the dosing pump to the closure element, and a third portion from the closure element to the oil transfer element. The flow sensor is provided in the second portion of the oil feed channel.

Claims

1. A device for oiling a moving yarn, comprising: a controller; a housing, and an oil port provided in the housing; a dosing pump arranged in the housing such that the housing defines an integral operational cover component of the dosing pump; a yarn guiding device configured on the housing with an oil transfer element embedded therein such that the moving yarn moves through the oil transfer element within the yarn guiding device; the oil transfer element connected to the oil port by an oil feed channel via the dosing pump; a closure element and a flow sensor provided in the oil feed channel; the oil feed channel defined by the housing and comprising a first portion from the oil port to the dosing pump, a second portion from the dosing pump to the closure element, and a third portion from the closure element to the oil transfer element; wherein the flow sensor is provided in the second portion of the oil feed channel; and the dosing pump is controlled by the controller to deliver a metered flow of oil to the oil transfer element based on yarn type and yarn speed without excess oil leakage from the yarn guiding device.

2. The device according to claim 1, wherein the dosing pump comprises a gear pump with a controlled drive motor.

3. The device according to claim 1, wherein the closure element comprises a shut-off valve with an electromagnetic drive.

4. The device according to claim 1, wherein the third portion of the oil feed channel is formed at least partially as a heating coil.

5. The device according to claim 4, wherein the heating coil comprises an input temperature measurement device and an output temperature measurement device.

6. The device according to claim 1, wherein the yarn guiding device is mounted on an outer side of the housing and is open towards a surrounding of the housing.

7. The device according to claim 1, wherein the yarn guiding device is held in the housing in a linearly displaceable manner.

8. The device according to claim 1, wherein the oil transfer element is detachably connected to the yarn guiding device.

9. The device according to claim 1, wherein a display and a keypad are provided in the housing.

10. The device according to claim 9, wherein one or more of the following are displayed by the display: an oil quantity; an oil temperature; an oil consumption; an operating state; an operating mode; an operating time; or an operating instruction.

11. A method for oiling a moving yarn with the device according to claim 1, the method comprising: the controller closing the oil feed channel by actuating the closure element when the dosing pump is at a standstill.

12. The method according to claim 11, wherein the controller regulates an oil quantity reaching the yarn guiding device via the drive motor of the dosing pump.

13. The method according to claim 11, wherein the third portion of the oil feed channel is formed at least partially as a heating coil, wherein a temperature of the oil at an output of the heating coil is controlled by the controller.

14. The method according to claim 11, wherein the controller operates the device autonomously, wherein communication with the controller is conducted via a display screen and a keypad configured with the housing.

15. The method according to claim 14, wherein the controller is in communication with a superior controller that determines an oil dosing quantity or oil temperature to be maintained by the controller.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages of the invention are described in subsequent exemplary embodiments. In the figures:

(2) FIG. 1 shows a schematic view of a first embodiment of a device according to the invention;

(3) FIG. 2 shows a schematic sectional view at the location A-A according to FIG. 1;

(4) FIG. 3 shows a schematic view of a second embodiment of a device according to the invention;

(5) FIG. 4 shows a schematic sectional view at the location B-B according to FIG. 3 and

(6) FIG. 5 shows an enlarged sectional view at location C according to FIG. 4.

DETAILED DESCRIPTION

(7) Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(8) FIG. 1 shows a schematic view of a first embodiment of a device according to the invention and FIG. 2 shows a schematic sectional view at the location A-A according to FIG. 1. A housing 2 has a yarn guiding device 6 along which a yarn 1 is guided along the housing 2. In this case, the yarn guiding device 6 is open to the surrounding, in such a manner that it is easy to insert the yarn 1 into the yarn guiding device 6. Likewise, the entire extension of the yarn 1 in the yarn guiding device 6 can be seen from the outside. An oil transfer element 7 is embedded in the yarn guiding device 6. As the yarn 1 slides past the oil transfer element 7, oil is mechanically transferred to the yarn 1. The oil is brought to the device from a reservoir (not shown) and introduced into the housing 2 via an oil port 3. From the oil port 3, the oil passes through an oil feed channel to the oil transfer element 7. In the embodiment shown, the oil feed channel is fully integrated in the housing 2. A first portion 8 of the oil feed channel connects the oil port 3 to a dosing pump 4. The dosing pump 4 is designed as a gear pump and is driven by a drive motor 5. The drive motor 4 is attached to the housing 2. In a second portion 9 of the oil feed channel, the oil is led from the dosing pump 4 to a closure element 11. The closure element 11 has an electromagnetic drive 12, in which case the closure element 11 is built into the housing 2 and the electromagnetic drive 12 is attached to the housing 2. The closure element 11 can be used to close the oil feed channel between the second portion 9 and a third portion 10 in such a manner that no oil can reach the oil transfer element 7 when the device is at a standstill. In this second portion 9, a flow sensor 13 is also provided, this serves to measure a quantity of oil flowing through the second portion 9. The third portion 10 connects the closure element 11 to the oil transfer element 7.

(9) FIG. 3 shows a schematic view of a second embodiment of a device according to the invention and FIG. 4 shows a schematic sectional view at the location B-B according to FIG. 3. The basic structure of the second embodiment corresponds to the structure of the first embodiment; in the following, only the differences will be discussed and reference will be made to FIGS. 1 and 2 for the basic description. In the embodiment shown, the oil feed channel is not fully integrated in the housing 2. In the third portion 10 of the oil feed channel, a heating coil 14 is provided between the closure element 11 and the oil transfer element 7. The heating coil 14 has an input temperature measurement 15 at the end thereof facing the closure element 11 and an output temperature measurement 16 at an opposite end. Temperature measurements 15 and 16 can be used to determine a heating energy required to achieve a predetermined initial temperature of the oil at the end of heating coil 14. The viscosity of the oil is controlled by the temperature of the oil as it flows out of the oil transfer element 7, regardless of the temperature thereof as it enters the device through the oil port 3. Further, a controller 17 is attached to the housing. The controller includes all elements necessary for the operation of the device and has a visualization 18 and a keypad 19. Visualization 18 is shown as a display by way of example. With the aid of visualization 18 and keypad 19, the device for oiling a moving yarn 1 can be operated autonomously. Alternatively, a touchscreen can be used for visualization and input of data.

(10) FIG. 5 shows an enlarged sectional view at location C according to FIG. 4. Oil reaches the oil transfer element 7 via the third portion 10 of the oil feed channel guided in the housing 2. The oil transfer element 7 is held in a recess in the housing 2 by the yarn guiding device 6. The yarn guiding device 6 is designed as a two-part element at the location of the oil transfer element 7 by way of example. The two elements of the yarn guiding device 6 are clamped in the recess of the housing 2.

(11) The present invention is not limited to the embodiments as shown and described. Modifications within the scope of the claims are possible, as well as a combination of the features, even if these are shown and described in different embodiments.

LIST OF REFERENCE SIGNS

(12) 1 Yarn 2 Housing 3 Oil port 4 Dosing pump 5 Drive motor 6 Yarn guiding device 7 Oil transfer element 8 First portion of the oil feed channel 9 Second portion of the oil feed channel 10 Third portion of the oil feed channel 11 Closure element 12 Electromagnetic drive 13 Flow sensor 14 Heating coil 15 Input temperature measurement 16 Output temperature measurement 17 Controller 18 Visualization 19 Keypad