TWI448594B - Improved oiling device for textile machines - Google Patents

Description

Oil supply device for textile machine

The invention relates to a textile machine oil supply device, in particular for a knitting machine, such as a circular knitting machine or a flat knitting machine.

Knitting machines, and also other textile machines, generally require an oil supply device to supply a lubricating film to moving parts such as knitting needles, sinkers and the like during operation. The lubricant supply must be carefully measured to avoid soiling the textile produced by the lubricant. Excessive supply of lubricant is also unacceptable, as is the case with under-supply shortages that can lead to unbalanced wear.

For example, a compressed air actuated device known from DE 30 28 125 C2 is generally used as a textile machine oil supply device. The oil supply device shown therein has an oil sump under pressure. An atomizer device is disposed in the tank to create an oil mist that is blown through the connecting line to an lubrication point of the knitting machine with an air/oil mixture. A nozzle for producing an approximately conical spray spray is provided to create an oil mist. In most embodiments, the hollow drilled journal system disposed on a crown is disposed above the nozzle and receives oil mist. In a different embodiment, the nozzle is configured to be blown down and the journal is disposed below it. The end face of the journal is small so that it only receives a small oil mist. However, oil buildup can be formed at the respective end faces of the journals or on the respective end faces and can be carried into the lines for oil and air from time to time. This can lead to excessive lubrication when the oil buildup reaches the lubrication point. This phenomenon is particularly noticeable when working with low air pressure and low downforce air volume to reduce compressed air consumption.

It is an object of the present invention to provide an improved oil supply apparatus. This object is achieved by an oil supply device according to claim 1 of the invention: the oil supply device according to the invention preferably has an atomizer device which is blown downward to generate an oil mist and an oil extraction device, It is disposed below the nebulizer device. The oil pick-up device has an outlet from which the line is routed to a lubrication point for supplying an oil/air mixture thereto.

Since the oil pick-up device is disposed below the atomizer device, the oil deposit formed in the oil pick-up device is continuously introduced into the line leading to the lubrication point. Longer accumulation of oil can be avoided and thereby avoiding the formation of larger oil buildups which are occasionally carried into the line. Use this method to ensure that the oil is evenly supplied to the lubrication point.

This applies in particular to the operation during the operation of the undulating and in particular low compressed air volume flow. Compressed air is required to operate the nebulizer device and atomize the oil. The concept according to the invention is here managed to handle a small amount of compressed air. Pressure fluctuations that may cause changes in the size of the droplets in the oil mist play a subordinate role. The resulting oil mist will impact the oil pick-up device disposed below the nebulizer device in each case. From there, any oil deposits formed on the oil mist and the pick-up device can be delivered to the lubrication point.

The oil take-up pouch has a cross-section that is preferably larger than one of the cross-sections of the connected lines in each case. The transverse section of the pouch is measured transversely to the direction of flow of the pouch. It is at least larger than the flow cross section of the connected line, but is preferably larger than the outer cross section of the line to be connected. In a preferred embodiment, the above statements are also applicable to lines for oil and air. Since it is preferably configured as a crown and in this case preferably adopts a large access cross section of the oil-receiving pocket which closes the circular torus, the oil-receiving pockets are averaged relative to time and place. The oil mist sprays a proportion of the oil mist of the cone. Variations in the irregularity and undulation of an oil mist spray cone and/or relative to the size and density of the oil droplets are averaged over the adjoining cross section of the oil mist acquisition pocket and thus result in a relative amount of oil collected Form an average. This results in a uniform, finely tunable oil flow in the discharge line. In this way, the nebulizer device can be designed for a minimum compressed air consumption. It can be operated at an operating point that not only produces very fine oil mist, but also produces a (conical or hollow conical) jet of oil droplets of different sizes. A very low compressed air flow can also be achieved and this type of operating point can also be achieved with low air pressure.

Both the atomizer device and the pick-up device are preferably disposed in an oil sump in which the oil reserve can be closed. The oil sump is preferably at a pressure higher than the environment to send the oil mist out of the oil sump to the lubrication point.

Preferably, the textile machine oil supply unit is provided with a compressed air connection member for directing compressed air into the oil sump in a path to construct a pressure buffer and to reach the atomizer unit on a different path. The action of the compressed air introduced into the oil sump occurs by an adjustment or adjustment device to ensure that the pressure in the oil sump is lower than the pressure of the compressed air present in the atomizer device. Because of the downwardly directed spray injection of the nebulizer device and the large oil extraction cross-section of the oil-receiving pouch, only a relatively low pressure is required, but it is located on the nebulizer device.

The nebulizer device preferably operates according to the principle of a jet pump to generate an oil mist. The injection pump can draw oil directly from the oil reservoir of the oil reserve, or draw oil from an intermediate stock in a different design, which is continuously filled from the oil sump to ensure a constant suction level for the operation of the injection pump. Used.

The oil extraction device preferably has an open channel that is coaxially aligned with respect to the nebulizer device and is surrounded by a crown of the oil-engaging pouch. The oil-receiving pouch has a narrow outer edge on its upper side facing the nebulizer device, on which no oil buildup adheres, in particular no oil droplets. If the oil deposited on the wall of the oil-receiving pouch does not run inward to the line leading away, it is ran away and thus returns to the oil reservoir. Because the tendency to form temporary oil buildup is reduced, the atomizer nozzle of the nebulizer device can operate with minimal air volume. There is no need to blow off any type of oil buildup as it will run away, such as down through the central opening of the oil pick-up.

Figure 1 shows an oil supply device 1 which is used, for example, to supply oil to a knitting machine or another implement, in particular a textile machine. The oil supply device 1 can simultaneously supply one or more lubrication points with oil. The oil supply device 1 is constructed to supply an oil/air mixture to the lubrication point. The oil supply device 1 has a preferably closed housing 2 for use as an oil sump or in which an oil sump 3 is disposed. An atomizer module 4 for generating an oil mist also belongs to the oil supply device 1. The atomizer module 4 is a unit that is mounted in the oil sump 3 and is preferably completely disassembled. For this purpose, the atomizer module 4 is preferably seated in an opening of the oil sump 3 and held therein by suitable fastening means such as screws. It can be released from the oil sump 3 and cleaned as needed.

The atomizer module 4 is operated with compressed air. A pressure regulator 5 or another means for reducing or regulating the pressure of the incoming compressed air is preferably connected upstream of the atomizer module 4.

A metering and dispensing device constructed to produce a constant flow of oil droplets belongs to the atomizer module 4. The metering and dispensing device can be a piston pump that delivers, for example, one droplet of oil through each of the piston strokes through one or more oil nozzles. One or more nozzles for delivering this type of oil droplets and producing a droplet of oil droplets in a relatively large cross section may be provided. An embodiment of this type seeks to handle a small amount of compressed air. The piston pump can be operated by compressed air. The oil droplet flow can impinge on an oil pick-up device 7, which in each case picks up a partial stream of droplets and dispenses them to the line.

In a preferred embodiment, the metering and dispensing device system constitutes an atomizer device 6. The oil pick-up device 7 is disposed below it. Line 8 branches from oil pick-up device 7 to individual lubrication points that are not further displayed.

Figure 2 shows an embodiment of the oil supply device 1 according to the invention in more detail. It can be seen that the oil sump 3 is closed on all sides. A cover member 9 is provided on the upper side thereof, the cover member 9 closes the oil groove 3 at the top and the atomizer module 4 protrudes from the cover member 9. Further connectors and adjustment members are also disposed on the cover member 9. The atomizer module 4 is supplied by a passage using a compressed air connection member 9a and the oil groove 3 is supplied by compressed air by another passage. Although it is preferred to supply the atomizer module 4 with compressed air directly via a line 10, the compressed air is preferably supplied to the interior of the oil sump 3 by a pressure reducing device 11 by means of an adjustment or regulating device. The pressure reducing device 11 can have a pressure regulator or be selective and only have a throttle device or another adjustment device.

In the present embodiment, an oil reservoir 12 is disposed above the actual oil reservoir 24 located in the oil sump 3, which is continuously supplied with oil by a pump device 13. The oil reservoir 12 is disposed at a given height independently of the oil level in the oil sump 3 and is used to supply the atomizer device 4.

Pump unit 13 is preferably operated by compressed air. It comprises a riser tube 14, and the compressed air is introduced into the riser tube 14 by means of a pressure reducing device 11 and a line 15. This is caused by bubbling upward from a nozzle 16 disposed at the lower end of the riser tube 14, and also transferring the oil upward in the riser tube 14 during the process. The oil system is discharged at a lateral opening 17 above the reservoir 12 and filled with the reservoir 12.

The atomizer module 4 is supplied with oil by an oil line 18. It draws oil from a metering chamber during the process, which is covered at the top and can be viewed through a transparent cover 19 or another viewing window. The interior 20 of the metering chamber is substantially closed toward the outside. It is supplied with oil by a riser 21. The riser 21 is dropped into the interior 20 in a continuous stream. In order to adjust the pressure in the interior 20, the interior 20 is connected to the interior of the oil sump 3 by a passage 22 and a throttle valve 23.

In an alternative embodiment, the reservoir 12 and the pumping device 13 are not used. In this example, line 18 or riser 21 is introduced directly into oil reservoir 24.

The nebulizer module 4 is shown separately in Figure 3. The atomizer device 6 and the oil extraction device 7 are disposed opposite each other and vertically on top of each other. A connector 25 for connecting the line 8 leading to the lubrication point and not further shown here is disposed at the atomizer device 6 disposed at the top. The connector 25 is disposed on an imaginative circle that is preferably concentrically disposed relative to a central axis 26 of the atomizer module 4.

The atomizer nozzle 27, also emerging from Figure 3a, acts as a central element and belongs to the atomizer device 6. The atomizer nozzle 27 has a central oil passage 28 that terminates in a downwardly directed nozzle opening 29. An air passage 30 encounters an oil passage 28 at an annular gap.

The atomizer nozzle 27 is held between an upper cover member 31 and a lower cover member 32. Two cover members 31, 32, preferably having an outwardly directed circular profile, are seated in a flat manner on each other in a sealed manner. The atomizer nozzle 27 is composed of an upper cover member 31, an insert member 32a and a lower cover member 32. A cylindrical extension member 34 provided on the outer side (i.e., on the outer peripheral surface thereof) and provided on the upper cover member 31 projects into the widened upper end of the oil passage 28. The covers 31, 32 are flat and are arranged in a flat and sealed manner against each other. The insert 32a is received in a chamber or pocket formed in the lower cover 32 therebetween. An atomizer nozzle 27 having a circular cross section is seated centrally and in a sealed manner in the opening of the receiver 33. The extension member 34 includes an oil passage that is coupled to a radial portion of the oil passage of the cover member 31. Oil passage by a tube 38 is fed with oil and tube 38 connects atomizer device 6 to oil extraction device 7. The tubes 36, 38 hold the upper and lower portions of the nebulizer module 4 together and carry oil and air.

The air passage 30 is electrically connected to one of the annular grooves 37 on the upper flat side of the atomizer nozzle 27, and in turn extends radially into the upper cover 31 and then branches downward to pass through the lower cover. The air passage 35 of the member 32 is electrically connected. The air passage is supplied with air by a tube 36 which connects the atomizer device 6 to the take-up device 7. Tube 36 is connected to compressed air line 10.

The receiver 33 has a centrally preferred cylindrical opening in which a lower dish extension of the lower cover member 32 is seated. A pocket that receives the two covers 31, 32 appears above the opening. An apex 39 around the pocket has a crown that is vertically open, each having a cylindrical portion at the top. A connector member 40 for connecting a line leading to a lubrication point is seated in these portions. For this application, the connector body 40 has, in each case, a cylindrical portion having at least one seal on the outer side. Portions of the respective connecting body members 40 that protrude beyond the edge 39 may be combined to form a hose connecting nozzle. The connector body 40 can also be threaded into the vertical opening.

The connector member 40 for a central aperture therethrough has a funnel opening 41 at its lower end as shown in Figure 4, adjacent to a space 42 which is again narrowed at the bottom in the edge 39. This space opens into the connection nozzle 43 for the riser 44 for oil and air at the bottom.

Each riser 44 connects the oil pick-up device 7 to a lubrication point The individual lines are used to supply the oil/air mixture. The oil/air mixture is provided by a nebulizer device 6 in a downwardly directed conical oil mist injection. In order to be received, the oil pick-up device 7 for each discharge line has an oil take-up pouch 45 in each case. The oil take-up pouches 45 are preferably of the same configuration to one another and are disposed on a circle that is concentric with the central axis 26. The oil take-up pouches 45 together form an oil take-up cross section. This is preferably greater than half of the cross-section (circular or circular ring) measured at the same height of the oil mist spray cone. The oil mist spray cone can be a solid cone or a hollow cone. It is possible that a larger proportion of the oil mist spray cone is taken up by the oil take-up pouch 45, preferably at least 5% to 30% in each case, so that local irregularities in the oil mist flow are not damaged between the individual lubrication points. Oil distribution.

The oil take-up pouch 45 can be disposed on one or more concentric crowns. The oil-receiving pockets 45 of the two crowns may have the same or different cross-sectional faces and thus different access cross-sections. The latter can be used to achieve the same amount of oil in all of the oil-receiving pockets 45 of the spray cone having a non-uniform oil density.

As described above, the oil take-up pouch 45 is disposed around a central passage 46 in a crown shape and opens toward the atomizer device 6 at the top. The oil take-up pouches 45 are separated from one another by walls 47 that are preferably oriented radially relative to the central axis 26. These walls 47 preferably extend vertically, i.e., parallel to the central axis 26. The following description of an oil-receiving pouch 45 is representatively applicable to all oil-receiving pouches.

The size of the oil-receiving pocket 45 and the diameter of the crown formed thereby The set dimension is such that the oil picks up the bag 45 in the outer zone of an oil spray injection. The latter preferably has a 30° opening angle. The oil take-up pouch 45 is preferably in the range of 10 to 30 degrees. It therefore takes between 5% and 30% of the oil mist produced.

The oil take-up pouch 45 is closed radially inwardly and radially outwardly of the upper portion 48, 49 with respect to the central opening at its upper portion. In a plan view, the radial wall 47 and the inner and outer walls 48, 49 form an approximately trapezoidal closed wall configuration in the outline and plan view in each example. The cross-section of the trapezoidal face, i.e., the oil-receiving pocket 45, is greater than the cross-section of the riser 44 or the route 8 leading away. The wall 47 is preferably higher than the radially inner wall of the oil-engaging bladder 45 or another radially outer wall. The lower wall 49 (or 48) can be used as an overflow if at least the outer wall 49 or in the manner of addition or substitution causes the radially inner wall 48 to be lower than the intermediate wall 47. If, for example, oil is not taken from an oil take-up pouch 45, and the latter is filled with oil, the oil cannot overflow into the adjacent oil-receiving pouch 45. If a low configuration of the complete wall 49 or 48 is not employed, one of the oil overflow recesses in the coherent wall or another opening having the same mode of action may be provided.

The walls 47, 48, 49 preferably terminate in a top portion of a narrow outer edge 50 that is narrowed thereto without forming oil beaches or oil droplets. The oil take-up pouch 45 also has a substantially funnel-shaped base 51 from which an oil passage 52 branches. The oil passage 52 is first directed vertically downward and then passed into a radially extending portion. From there, it is further directed upwards to a connecting piece 53 which is connected to the connecting piece 53. The oil pick-up device 7 is preferably in the form of two plates that are configured to rest on each other and rigidly connect to each other. Upper plate has oil connection Take the pouch 45. The oil passage 52 is also disposed in the upper plate 54. The lower plate 55 is adjacent to the oil passage 52 that faces the bottom.

The oil supply device 1 described so far operates as follows: In operation, compressed air is applied to the compressed air connection 9a. The compressed air is directed to the atomizer module 4 via line 10. A small portion of the compressed air exits and is directed into the pumping device 13 by, for example, the pressure reducing device 11 and the line 15. There, the rising air bubbles deliver an oil stream to the oil reservoir 12. In this case, the inside of the oil sump 3 is simultaneously supplied with compressed air. However, this is at a lower pressure than the compressed air that is directed to the nebulizer device 6.

In the atomizer device 6, an air flow is generated via the air passage 30 of the atomizer nozzle 27. The exiting compressed air is drawn from the interior 20 by the oil passage 28 and ultimately by the tube 38 and the oil line 18, which thereby remains at a reduced pressure. The reduced pressure means that the oil is constantly guided into the interior 20 by the riser 21 and is disposed there for use by the atomizer device 6.

Alternatively, tube 38 is also directed to and from the oil reservoir 24 by a suitable line.

The atomizer nozzle 27 produces a spray cone 56 of fine oil droplets. It is dripped from above on the oil-collecting bladder 45. The air pressure present in the oil sump 3 means that the oil/air mixture is further conveyed through the oil passage 52 and the riser 44 to the respective connecting member 40 or the line leading away from the location. An oil deposit on the inner surface of the walls 47, 48, 49 for limiting the oil access pocket 45 travels directly through the funnel-shaped base 51 The oil inlet passage 52 is continuously conveyed away. The oil/air mixture rising in the riser 44 therefore does not contain any large oil buildup.

The oil mist that impinges on the outside of the wall 48 and deposits there is guided downward by the central passage 46. The oil impinging on the outside of the wall 49 can also flow outward. A portion of the spray impacts on the oil take-up pouch 45 and is therefore ultimately delivered to the lubrication point. Unlike known oil supply devices, the oil supply device according to the present invention manages to have a low compressed air consumption.

The oil supply device according to the invention is particularly suitable for low air pressure operation and is suitable for applications with a very low compressed air consumption. It preferably has a nebulizer 6 that is sprayed down, and an oil extraction device 7 is disposed below the nebulizer 6. This feature is based on the large oil extraction pocket 45, which is concentrically disposed about a central passage 46. The oil take-up pouch 45 covers the face of a circular ring that is concentrically disposed with respect to the central axis 26 and the atomizer nozzle 27 and is only separated by the radial partition 47.

1‧‧‧ oil supply unit

2‧‧‧Shell

3‧‧‧ oil tank

4‧‧‧Atomizer module

5‧‧‧ Pressure Regulator

6‧‧‧Atomizer device

7‧‧‧Oil pick-up device

8‧‧‧ lines

9‧‧‧Cover

9a‧‧‧Compressed air connections

10‧‧‧ lines

11‧‧‧ Pressure reducing device

12‧‧‧ oil reservoir

13‧‧‧ pump device

14‧‧‧

15‧‧‧ lines

16‧‧‧ nozzle

17‧‧‧ openings

18‧‧‧ oil circuit

19‧‧‧ Cover

20‧‧‧Internal

21‧‧‧Ran

22‧‧‧ pathway

23‧‧‧ throttle valve

24‧‧‧ oil stocks

25‧‧‧Connecting parts

26‧‧‧Center axis

27‧‧‧Atomizer nozzle

28‧‧‧ oil passage

29‧‧‧Nozzle mouth

30‧‧‧Air access

31‧‧‧Upper cover

32‧‧‧Under cover

32a‧‧‧ inserts

33‧‧‧ Receiver

34‧‧‧Extensions

35‧‧‧Air passage

36‧‧‧ tube

37‧‧‧Round groove

38‧‧‧ tube

39‧‧‧ edge

40‧‧‧Connected body parts

41‧‧‧Funnel opening

42‧‧‧ Space

43‧‧‧Connecting nozzle

44‧‧‧Ran

45‧‧‧Oil pick-up pouch

46‧‧‧Central Channel

47‧‧‧ radial wall

48‧‧‧ inner wall

49‧‧‧ outer wall

50‧‧‧ outer edge

51‧‧‧Base

52‧‧‧ oil passage

53‧‧‧Connecting parts

54‧‧‧Upper board

55‧‧‧ Lower board

56‧‧‧Spray cone

Figure 1 is a schematic view showing a textile machine oil supply device according to a design of the present invention; Figure 2 is a simplified sectional view showing the textile machine oil supply device according to Figure 1; Figure 3 is a first vertical sectional view showing the textile machine according to Figure 2 The atomizer module of the oil device; FIG. 3a shows the atomizer module according to FIG. 3 in a cut-away detail view; Figure 4 is a second vertical sectional view showing the atomizer module of the textile machine oil supply device of Figure 2; Figure 5 is a perspective view showing the oil pick-up device of the atomizer device.

1. . . Oil supply device

2. . . case

3. . . Oil tank

4. . . Nebulizer module

5. . . Pressure regulator

6. . . Nebulizer device

7. . . Oil pick-up device

8. . . line

45. . . Oil pick-up pouch

56. . . Spray cone

Claims (15)

A textile machine oil supply device (1), in particular for a knitting machine, has a metering and dispensing device for generating an oil droplet flow, and has an oil picking device (7) configured to be located at an oil distribution device An oil collection pocket (45) is provided at intervals, and is provided with a vertical wall, wherein the oil extraction capsule (45) has an outlet, and a line (8) leading to a lubrication point can be connected to the outlets for guiding An oil/air mixture to the lubrication points. The textile machine oil supply device of claim 1, wherein the metering and dispensing device system constitutes an atomizer device (6) configured to generate a downwardly directed oil mist spray injection. The textile machine oil supply device according to claim 1, wherein an oil groove (3) that is closed outward is coupled to the metering and dispensing device, and an oil reserve (24) is disposed in the oil tank to provide a compressed air. A connector (9a) whereby compressed air is directed into the sump (3) to construct a compressed air buffer, and wherein an adjustment or adjustment device is provided to affect the compressed air feed to the sump (3). A textile machine oil supply device according to claim 2, wherein the atomizer device (6) comprises a jet pump arrangement connected to the compressed air connection (9a). The textile machine oil supply device according to claim 1, wherein the oil pick-up device (7) is connected to the connecting body member (40), and the branching device (1) is lifted upward from the textile machine The riser (44) is disposed between the oil pick-up device (7) and the connecting body members (40). The textile machine oil supply device of claim 1, wherein each of the oil-receiving pockets (45) has a cross-section that is larger than a cross-section of the line (8) leading to the respective lubrication points, such The oil take-up pouch is configured to draw at least 5% to 30% of the oil flow output by the metering device. The textile machine oil supply device of claim 1, wherein the oil picking device (7) has a central passage (46) coaxially oriented with respect to the atomizer device (6), the passage system It is surrounded by a crown of the oil-receiving pocket (45). The textile machine oil supply device of claim 6, wherein the oil extraction bag (45) is a bag that is separated from each other by a partition and opened at the top, each having a base side outlet . The textile machine oil supply device of claim 7, wherein the oil-receiving pockets (45) each have a funnel-shaped base (51). The textile machine oil supply device according to claim 1, wherein the oil picking device (7) has an upper plate (54) and a lower plate (55), wherein the upper plate (54) is not connected A single piece of plastic material injection molded part is formed with an oil take-up pouch (45) and a connector (53) for guiding the riser (44) upward and connected to the lower plate (55). The textile machine oil supply device of claim 1, wherein the atomizer module (4) is seated on an opening of the oil groove (3) and held therein. The textile machine oil supply device of claim 1, wherein the oil pick-up device (7) has an oil-receiving pocket (45) that forms a round crown. The textile machine oil supply device of claim 1, wherein the oil extraction device (7) has an oil access pocket (45) that forms at least two circular crowns that are concentric with respect to each other. The textile machine oil supply device of claim 13, wherein the oil-receiving pockets (45) have a partition between them, which is higher than the radial direction of the oil-receiving pockets (45) Wall or radial outer wall. The textile machine oil supply device of claim 1, wherein the atomizer module (4) has an atomizer device (6) The upper part and a part comprising an oil pick-up device (7) are held together by tubes (36, 38).