TW201321568A - Thread feed device for feeding a thread to a textile machine - Google Patents

Abstract

A thread feed device (1) according to the invention for feeding a thread to a textile machine is provided with a thread feed wheel (3), with a drive shaft (4), the pivot axle of which runs vertically during operation and on which the thread feed wheel (3) is arranged, and with a carrier (5) for mounting the drive shaft (4). The thread feed device (1) has at least one thread sensor (11, 12), a first and at least a second thread brake (16, 40, 17, 30, 41) in the thread course before the thread feed wheel (3) and a knot catcher (18). According to the invention, a knot catcher (18) is arranged between the two thread brakes (16, 40, 17, 30, 41).

Description

Yarn feeding device for feeding yarn to textile machine

The present invention relates to a yarn feeding device, in particular a circular knitting machine, for feeding yarn to a textile machine according to the first aspect of the patent application.

A yarn feeding device of the so-called yarn storage feed mechanism having a yarn storage drum and a shaft of the drum is known from German Patent No. DE 3 104 516. In this device, the yarn from the yarn bobbin is wound into a plurality of turns on the drum. The storage yarn is pulled out in the required manner, for example under controlled tension, in particular in a speed-independent manner, starting to be wound onto the feed mechanism. During operation, the yarn approaches the yarn feed mechanism via a guide eyelet, passes through two tensioning mechanisms and rolls onto the rotating drum. The yarn is pulled by the drum so that the textile machine receives the yarn at a constant tension.

In contrast to the yarn storage yarn feeding device, in the yarn feeding device configured as the positive yarn feeding device, the length of the feed yarn is thus dependent on the rotation speed of the yarn feeding wheel. In such a yarn feeding device, the yarn drawn by the spindle is repeatedly wound around the yarn feeding wheel and fed to the spinning machine in proportion to the rotation speed of the yarn feeding wheel (i.e., positively).

World Patent No. WO 2007/042057 A1 describes a yarn feeding device that can be operated as a positive yarn feeding device. The yarn feeding device has a yarn feeding wheel, a shaft disposed on the yarn feeding wheel by a connecting member, and a shaft A holder that is rotatably mounted thereon. The fixing on the yarn feeding side (that is, the thread course in front of the yarn feeding wheel) is provided with a yarn feeding eyelet, a thread brake, a thread running eyelet, and If necessary, the knot catcher.

A yarn feeding device that can be operated as a forward yarn feeding device is also described in the World Patent No. WO 2008/043371 A1. The yarn feeding device includes a yarn feeding wheel, a shaft extending vertically during use and disposed on the yarn feeding wheel, and a carrier having rotatably mounted upper and lower legs and a shaft thereon. The upper leg of the bracket carries the yarn feeding element configured as a guide eyelet and the yarn clearer below the yarn feeding element. Configure the yarn brake and yarn feeding sensor on the lower leg. The yarn feeding element, the yarn clearer and the yarn brake are located in the yarn path in front of the yarn feeding wheel. The yarn clearer, for example, is formed by a slotted plate, and the yarn preferably passes through its slot without biasing, and it is more desirable to not contact.

The yarn clearer is used to remove the unacceptable knot of the yarn. The yarn knots are, for example, manufacturing defects in the yarn path, nodules at the yarn joining points, and foreign particles attached to the yarn, such as fibers, yarn residues or dust particles. When the yarn knot is not allowed, the yarn stops at the yarn clearer and is broken.

The function of the yarn clearer in the yarn path in front of the yarn brake cannot always be guaranteed. Depending on the type of yarn, the yarn will be pulled out of the spindle with small or large tension fluctuations, which may cause the yarn to pass through the yarn clearer in a too loose or too tight manner. Pulling out the yarn The vibration of the wire, the yarn may touch the yarn clearer. This may result in damage to the yarn that has not been allowed to occur in a thick position.

It is an object of the invention to further develop a yarn feeding device for use in a variety of yarns.

This goal is achieved by the characteristics of item 1 of the scope of patent application.

The yarn feeding device of the present invention for feeding yarn to a textile machine (particularly, a circular knitting machine) is provided with a yarn feeding wheel and a drive shaft for the yarn feeding wheel. The pivot of the drive shaft runs vertically during operation. The yarn feeding wheel is disposed on the drive shaft and is non-rotatably coupled to the drive shaft during operation. In a specific embodiment, the yarn feeding device has a thread exit element for configuring the yarn taken by the yarn feeding wheel to be an oblique take-off. A large number of yarn feeding devices are provided on the circular knitting machine. When a forward yarn feeding device is used, the drive shafts of the yarn feeding devices are provided with a common driving member connected to the circular knitting machine. For this purpose, the drive shafts have pulleys, for example at the ends opposite the yarn feed wheels. In this case, the drive member comprises a drive belt which is operated during operation by a pulley connected to the feed wheel and driven by a drive of the circular knitting machine by means of a gearing. That is, the drive of the circular knitting machine drives the yarn feeding devices in the same manner during operation.

The yarn feeding device comprises a bracket having a fixing member for fixing the yarn feeding device to the textile machine and a bearing member for mounting The drive shaft. The yarn feeding device is provided with at least one yarn sensor. The yarn sensor is configured as a yarn feeding sensor and is arranged in the yarn path before the yarn feeding wheel, or configured as a thread exit sensor and disposed behind the yarn feeding wheel In the yarn path. In an alternative, the yarn feeding device has a yarn feeding sensor and a yarn exit sensor.

The yarn feeding device has a first yarn brake, at least a second yarn brake, and a yarn clearer. Both yarn brakes and yarn clearers are located in the yarn path in front of the yarn feed wheel, that is, in the yarn feed zone. According to the invention, the yarn clearer is disposed between the two yarn brakes.

During operation, the yarn pulled by the spindle is decelerated in the first yarn brake with a first braking force. The yarn pre-tensioned by the first yarn brake runs through the yarn clearer. The pre-tensioned yarn is further decelerated by the second brake force with the second brake force.

According to the invention, the first yarn brake is arranged in the yarn path in front of the clearer and the second yarn brake is in the yarn path after the clearer so that the yarn is likely to be pretensioned through the yarn clearer and then Feed to the yarn feed wheel in a manner that matches the yarn tension to the yarn type. The first yarn brake is used to avoid lateral vibration of the yarn path and tension fluctuations of the yarn before the yarn clearer. The yarn passes through the yarn clearer in a quiet and clear manner.

When a multifilament yarn is used, in particular, a multifilament yarn having 40 to 100 monofilaments, if necessary, has a texture, and the present invention is formulated It is particularly advantageous. When a multifilament yarn is used, there is a problem that the yarn is offset before the yarn brake when the braking force of the yarn brake is too high. If two yarn brakes are provided, the first yarn brake also causes some of the multifilament yarns to be bundled by adjusting the first yarn tension, that is, the pre-tensioning acts like a yarn. Smoothing. Therefore, the braking force of the second yarn brake can be lowered to avoid the wire being displaced and the wire is split on the yarn feeding wheel. Due to the pre-tensioning of the yarn, it is ensured that there is a reliable positioning feed on the yarn feeding wheel and that the thread is not offset.

The slot width of the yarn clearer can be adjusted to be preferred.

For example, each yarn brake is configured as a disc brake, a loop brake, or a compensation brake, such as a crocodile brake. Preferably, at least one of the two yarn brakes is configured as a disc brake having a vibrating member, hereinafter referred to as a vibration brake. European Patent No. EP 0 499 218 B1 describes a vibration brake, the contents of which are incorporated herein by reference. The vibration of the yarn brake assists in the rotation of the two brake discs of the yarn brake. The rotation of the brake discs prevents the yarn from cutting in at a particular point. It also allows the transport of dirt to leave the yarn brake. In an alternative, the first yarn brake in the yarn path is configured as a vibration brake.

In another alternative, the second yarn brake in the yarn path is configured as a vibration brake. This is a simple alternative to a concrete implementation.

It is preferred to configure one of the yarn brakes as a compensating yarn brake. The compensating yarn brake lifts a specific length of yarn at a low yarn tension to increase the yarn tension. With a high yarn tension, the length of the yarn that has been lifted is released again. In a specific embodiment, the compensating brake is configured as a crocodile brake or a gate tensioner. The compensating brake (wherein the yarn tension is increased by the deflection of the yarn) increases the area of use of the yarn feeding device with a configuration such as a disc brake in which the yarn is decelerated with surface pressure. In particular, ultra-fine yarns (where the disc brakes are individually braked in an unstable manner as needed) can be fed reliably with such a combination.

It is preferred that the two yarn brakes and the yarn clearer are disposed in the yarn path, for example substantially in a straight line, such that the yarn passes straight through the yarn clearer.

The yarn feeding device has a plurality of yarn guiding mechanisms which are preferably configured such that the yarn path can reach the first yarn brake and/or advance from the second yarn to the straight line at an acute angle. The yarn paths are adjusted by the yarn guiding mechanisms which deflect an acute angle at the first and/or second yarn brakes. For example, during deflection, the yarn is attached to the component of the corresponding yarn brake during operation. Prevent the yarn from jumping out of the yarn brake. The acute angle is, for example, 5° to 20°.

In a specific embodiment, the first yarn brake is vertically disposed above the second yarn brake during operation, and the yarn path is adjusted to pass substantially vertically through the yarn clearer.

Preferably, the yarn feeding device has at least one first yarn feeding guide for The acute angle adjusts the yarn path to the first yarn brake to a vertical line.

Preferably, the yarn feeding device has a yarn guiding mechanism for adjusting the yarn path advanced by the second yarn brake to a vertical line at an acute angle. The yarn guiding mechanism can be formed by a second yarn guiding member and/or a yarn sensor.

In a specific embodiment, the yarn feeding device includes a holder that is secured to the bracket. At least the two yarn brakes and the yarn clearer are disposed on the holder.

It is preferred to provide at least one yarn guide member (e.g., the first yarn feed guide) on the holder. It is preferred that the second yarn feeding guide is also disposed on the holder.

It is preferred to configure the yarn feeding device as a positive yarn feeding device.

The invention is further described below with reference to the embodiments shown in the drawings.

Example 1

The first embodiment of the yarn feeding device 1 of the present invention for feeding the yarn 2 to the textile machine (shown in Figure 1) (in particular, the positive yarn feeding device) is provided with a yarn feeding wheel 3 and a drive shaft 4 for driving The pivot of the shaft 4 runs vertically during operation. The yarn feeding wheel 3 is disposed on the drive shaft 4.

The yarn feeding device 1 comprises a carrier 5 which is at least partially configured as a housing. The bracket 5 has a bearing member disposed in its housing (not visible in Fig. 1) for mounting the drive shaft 4. The bracket 5 is provided with a fixing mechanism of the clamping screw 6, and the yarn feeding device 1 can be fixed to the textile machine by the clamping screw 6, in particular Yes, it is fixed to the machine ring 7 of the circular knitting machine.

The drive shaft 4 extends vertically through the bracket 5, and the yarn feeding wheel 3 is fixed to the lower end of the drive shaft 4, for example, by screws.

The yarn feeding device 1 has at least one (plurality of preferred) pulleys 8, 9 at the upper end of the drive shaft 4, and at least one coupling disc 10 or other coupling member between the pulleys 8, 9. The pulleys 8, 9 are rotatably mounted on the drive shaft 4 and, if necessary, can be coupled to the drive shaft 4 with a coupling disc 10 or other coupling member in a non-rotatable manner. The drive belts can be used to drive the corresponding pulleys 8, 9 which are operated, for example, on the pulleys of a plurality of yarn feeding devices in a circular machine.

The yarn feeding device 1 is provided with a signal member having a yarn feeding guide 11, a yarn take-up sensor 12, a circuit member, and an illumination member 13. The yarn feeding sensor 11 and the yarn take-up sensor 12 are movably (in particular, pivotally) disposed on the bracket 5. The circuit member (not visible in FIG. 1) is disposed in the housing of the bracket 5. It has a switch that can be switched by the yarn sensors 11, 12. It is connected to a lighting member, such as a small lamp or LED of the lighting member 13, and two contact pins 14, 15 connected to a line (not shown) of the machine controller that reaches the textile machine on the machine ring 7. The illumination member 13 is disposed on the bracket 5, for example, on the underside thereof.

The yarn feeding sensor is located in the yarn path before the yarn feeding wheel 3, and the yarn discharging sensor 12 is disposed in the yarn path after the yarn feeding wheel 3.

The yarn feeding device 1 has a first yarn brake 16 on the side of the carriage 5 in the yarn 2 feed zone (on the right side of Fig. 1), the second yarn brake 17 and a clearer 18 disposed between the yarn brakes 16, 17. In this embodiment, the two yarn brakes 16, 17 are configured as disc brakes.

The slot width of the clearer 18 can be adjusted. The yarn clearer includes a first small plate having a polygonal shape (for example, a hexagonal shape), and a second elongated small plate. The outer edge of the polygon of the first plate has a different distance from the vertical pivot, and the first plate can be rotated and locked about it. The second plate is disposed in front of the outer edge of one of the first plates such that the slots remain free between the outer edge and the second plate. The guiding yarn 2 passes through this slot during operation. The slot width can be adjusted wherein the edges of the first panel that are spaced apart from the pivot are rotated prior to the second panel.

Instead of a clearer, for example, there are small plates with slots of different widths. The plates of the clearer can be rotated and locked in different positions with respect to the different slot widths through which the yarn 2 passes.

As can be seen from Figure 1, the first yarn brake 16 is disposed vertically above the second yarn brake 17 during operation. In this case, in particular the guides which determine the yarn path in the yarn brakes 16, 17 which are configured as disc brakes, for example bearing pins 19, 20 around which the brake discs 21, 22 can rotate. They are arranged vertically one above the other, whereby the vertical yarn path through the clearer 18 can be adjusted.

In the yarn feeding device 1, in the yarn path before the first yarn brake 16, there is a first yarn feeding guide configured as the first yarn feeding eye 23. The feed aperture 23 is configured such that it can reach the first yarn at an acute angle The yarn path of the brake 16 is adjusted to a vertical line.

The yarn feeding device 1 has a second yarn feeding element configured to be the second yarn feeding eyelet 24. The second yarn feed aperture 24 is disposed in the yarn path directly in front of the yarn feed wheel 3. Due to the second yarn feed perforation, the feed of the yarn 2 on the yarn feed wheel 3 can be adjusted. During operation, the yarn feeding sensor 11 is located in the yarn path after the second yarn brake 17 and before the second yarn feed aperture 24. The yarn feeding sensor 11 forms a yarn guiding mechanism for adjusting the yarn path of the second yarn brake 17 at a sharp angle to a vertical line and for biasing the yarn 2 toward the yarn feeding aperture 24.

On the left side of the yarn feeding wheel 3 of Fig. 1, in the exit region of the yarn 2 (i.e., below the bracket 5), the yarn feeding device is provided with a yarn guiding guide configured as the first and second yarn exiting holes 25, 26. Pieces. The yarn taken out of the yarn feeding wheel 3 is configured to be taken obliquely by the yarn exit aperture 25 associated with the yarn feeding wheel 3. A yarn sensor 12 is disposed in the yarn path behind the second yarn exit aperture 26. In an alternative, the yarn take-up sensor 12 is positioned between the two yarn exit apertures 25, 26.

The yarn feeding device 1 is provided with a fixing frame 27 on which the first yarn supplying eye 23, the first yarn brake 16, the yarn clearer 18, the second yarn brake 17, and the second feeding are disposed one above the other. Eyelet eye 24.

The holder 27 illustrated in FIG. 2 includes a vertically extending long plate 28 that is secured to the bracket 5. The first yarn feeding eye 23 is disposed at the upper end of the plate 28, and the second yarn feeding eye 24 is disposed at the lower end. The first and second yarn brakes 16, 17 and the yarn clearer 18 are fixed to the plate 28 with screws 29a, 29b, and 29c, for example, and are fixed to the bracket 5 as needed.

In this embodiment, during operation, the upper end of the plate 28 is bent away from the bracket 5 at an obtuse angle (relative to a vertical line, for example, 160°). The first yarn feeding eyelet 23 is fitted into the opening of the upper curved portion. During operation, the lower end of the plate 28 is bent away from the bracket 5 at an acute angle (relative to a vertical line, for example, 20°). The second feeding aperture 24 fits into the opening of the lower curved portion.

The plate 28 is provided with an opening for fixing the two yarn brakes 16, 17 and the yarn clearer 18. The screws 29c and 29b pass through the openings in the fixing members of the second yarn brake 17 and the clearer 18 and through the openings of the plate 28 into the threaded holes of the bracket 5. The screw 29a passes through the opening in the fixture of the first yarn brake 16 into the threaded opening of the plate 28. The fasteners of the yarn brakes 16, 17 have latching lugs R that latch into corresponding recesses of the plate 28. The holder 27 is provided with, for example, a guide with a notch for this purpose, by which the first and second yarn brakes 16 and 17 are aligned relative to one another in a straight line. The latching lug R also prevents the yarn brakes 16, 17 from rotating or tilting.

In this embodiment, the holder 27 has another opening O for adjusting the holder 27 on the holder 5.

In an alternative, the holder 27 has other openings to which the guides (e.g., conduits) can be secured. The yarn brakes 16, 17 and the yarn clearer 18 are fixed to the holder 5 together with the holder 27 by screws 29b and 29c.

Alternatively, a snap-on or latch-up connection may be provided instead of the screw connection described above.

During operation, the yarn 2 pulled by the spindle is decelerated in the first yarn brake 16 with a first braking force. Using the first yarn brake 16 The pre-tensioned yarn 2 passes through the yarn clearer 18. The pre-tensioned yarn 2 is decelerated by the second brake force at the second yarn brake 17.

Example 2

The yarn supplying device 1 of the present invention illustrated in Fig. 3 corresponds to the first embodiment except that the second yarn brake is configured as the vibration brake 30 instead of the simple disc brake. The vibration brake 30 includes two brake discs 31, a holder 32, and a tappet 33. The brake discs 31 are rotatably mounted on the holder 32. The brake disc 31 itself, for example, is provided with a magnet, which is used to press the two brake discs 31 against each other with a specific force. The holder 32 is coupled to the mast 33, which is inserted into the housing of the bracket 5 via the opening of the plate 28 of the holder 27 and intermittently movable by the transmission of the rotary drive shaft 4.

The yarn supplying device 1 of the present invention shown in Fig. 4 corresponds to the second embodiment except that the bracket of the yarn feeding device 1 has an upper leg 5a, a lower leg 5b, and a casing 5c. In order to mount the drive shaft 4, the bracket has bearing members with a number of bearings which are arranged in the feet 5a, 5b. The two legs 5a, 5b of the bracket are connected to each other in a V shape. A fixing mechanism having a clamping screw 6 for fixing to the ring 7 is attached to the connecting side.

A lighting device 13 is arranged in the housing 5c of the bracket, the housing 5c being configured to be at least partially transparent.

In the yarn 2 feed zone on the left side of Fig. 4, the yarn feeding device 1 has a first yarn brake on the side of the holder opposite the fixing mechanism. 40. A second yarn brake 41 and a yarn clearer 42 between the yarn brakes 40, 41.

In this embodiment, the first yarn brake 40 is configured as a compensating brake, particularly as a brake, which is also known as a crocodile brake or a door tensioner.

The first yarn brake 40 is disposed above and fixed to the upper leg 5a.

The yarn feeding device 1 has a yarn guiding member configured as a yarn feeding eye 43 in the yarn path after the first yarn brake 40, which is disposed at the end of the upper leg 5a, in particular, is mounted in the opening . The yarn clearer 42 is disposed directly under the upper leg 5a. The yarn clearer 42 is also fixed to the upper leg 5a.

A second yarn brake 41 fixed to the lower leg 5b is disposed in the yarn path under the clearer 42. The second yarn brake 41 is configured as a vibration brake.

A yarn restricting hook 44 fixed to the lower leg 5b is disposed in the yarn path between the clearer 42 and the second yarn brake 41. The yarn 2 does not touch the yarn restriction hook 44 during normal operation.

An alternative to the yarn feeding device 1 does not have this yarn limiting hook 44.

The yarn feeding sensor 11 is disposed in the yarn path after the second yarn brake 41 and before the yarn feeding wheel 3, which in this embodiment is provided with a separating member. In this embodiment, the yarn feeding sensor 11 is provided with a guide configured to be a yarn eyelet 45.

The yarn path through the clearer 42 passes straight through (here substantially perpendicular) through the first yarn feed aperture 43 and the second yarn brake 41.

The yarn take-up sensor 12 disposed between the two yarn guides configured as the take-up apertures 46, 47 is located in the exit region of the yarn 2. Both the yarn take-up sensor 12 and the take-up apertures 46, 47 are disposed on a height-adjustable holding mechanism.

The first yarn brake 40 comprises a fixing member 48, a brake holder 49 having a yarn feeding eyelet 50, two brake legs 52, 53 which are movable relative to each other, and a pressing disc for the tensioning member ( Impact disc)51. The brake legs 52, 53 are configured such that each end is rotatable about two parallel pivots 54, 55 such that the other ends can be remote from each other (open position) or close to each other (closed position). The brake legs 52, 53 are acted upon by a tensioning member (e.g., spring F) with which the open position is predetermined. The tensioning member can be adjusted with a screw 56. The brake legs 52, 53 are provided with pins 57, 58 and offset pins which are used to guide the yarn back and forth between the two brake legs 52, 53 in a zigzag manner.

The brake retainer 49 is pivotable about the pivot member (not visible in the figure) for the stationary member 48. The pivots are spaced from the pivots 54, 55 of the brake legs 52, 53 by at least two-thirds of the length of the shorter brake leg 53, preferably near the length of the shorter brake leg 53.

The fixing member 48 is fixed to the upper leg 5a of the bracket, for example, with a screw.

The superfine yarn can also be reliably fed with the positive yarn feeding device 1 during operation.

1‧‧‧Feeding device

2‧‧‧Yarn

3‧‧‧feeding wheel

4‧‧‧Drive shaft

5‧‧‧ bracket

5a‧‧‧上上

5b‧‧‧foot

5c‧‧‧shell

6‧‧‧Clamping screws

7‧‧‧Act

8‧‧‧ Pulley

9‧‧‧ Pulley

10‧‧‧ Coupled disk

11‧‧‧Feed sensor

12‧‧‧Yarn sensor

13‧‧‧Lighting components

14‧‧‧Contact pin

15‧‧‧Contact pin

16‧‧‧ yarn brake

17‧‧‧Yarn brake

18‧‧ ‧ clearer

19‧‧‧ Bearing pin

20‧‧‧ bearing pin

21‧‧‧ brake disc

22‧‧‧ brake disc

23‧‧‧First feeding aperture

24‧‧‧Second feeding aperture

25‧‧‧First yarn exit

26‧‧‧Second yarn exit

27‧‧‧ Fixing frame

28‧‧‧ boards

29a‧‧‧screw

29b‧‧‧screw

29c‧‧‧screw

30‧‧‧Vibration brake

31‧‧‧ brake disc

32‧‧‧ Fixing frame

33‧‧‧ mast

40‧‧‧ yarn brake

41‧‧‧ yarn brake

42‧‧‧Clearer

43‧‧‧ feeding aperture

44‧‧‧Yarn limit hook

45‧‧‧Yarn eyelet

46‧‧‧Outlet eyelet

47‧‧‧Outlet eyelet

48‧‧‧Fixed components

49‧‧‧Brake mount

50‧‧‧ feeding aperture

51‧‧‧Crimping disc

52‧‧‧ brake foot

53‧‧‧ brake foot

54‧‧‧ pivot

55‧‧‧ pivot

56‧‧‧ screws

57‧‧‧ yarn eye

58‧‧‧ yarn eye

R‧‧‧Latch lugs

O‧‧‧Latch lugs

1 is a schematic side view of a first embodiment of a yarn feeding device of the present invention; FIG. 2 is a front perspective view and a vertical sectional view of one side of the fixing frame 5, which is the distal end of the yarn feeding device of FIG. .

Figure 3 is a schematic side elevational view of a second embodiment of a yarn feeding wheel according to the present invention; and Figure 4 is a schematic side view of a third embodiment of the yarn feeding device of the present invention and a schematic view of the feed side.

1‧‧‧Feeding device

2‧‧‧Yarn

3‧‧‧feeding wheel

4‧‧‧Drive shaft

5‧‧‧ bracket

5a‧‧‧上上

5b‧‧‧foot

5c‧‧‧shell

6‧‧‧Clamping screws

7‧‧‧Act

8‧‧‧ Pulley

9‧‧‧ Pulley

10‧‧‧ Coupled disk

11‧‧‧Feed sensor

12‧‧‧Yarn sensor

13‧‧‧Lighting components

14‧‧‧Contact pin

15‧‧‧Contact pin

16‧‧‧ yarn brake

17‧‧‧Yarn brake

18‧‧ ‧ clearer

19‧‧‧ Bearing pin

20‧‧‧ bearing pin

21‧‧‧ brake disc

22‧‧‧ brake disc

23‧‧‧First feeding aperture

24‧‧‧Second feeding aperture

25‧‧‧First yarn exit

26‧‧‧Second yarn exit

27‧‧‧ Fixing frame

28‧‧‧ boards

29c‧‧‧screw

Claims (10)

A yarn feeding device (1) for feeding a yarn to a textile machine, comprising: a yarn feeding wheel (3) having a driving shaft (4), the pivot of the driving shaft (4) being vertical during operation Running and arranging the yarn feeding wheel (3) thereon; a bracket (5) for mounting the driving shaft (4); at least one yarn sensor (11, 12); at the yarn feeding wheel (3) a first yarn brake (16, 40) in the preceding yarn path; at least one second yarn brake in the yarn path in front of the yarn feeding wheel (3) (17, 30, 41) And a yarn clearer (18, 42) disposed between the first and second yarn brakes (16, 40, 17, 30, 41). The yarn feeding device (1) of claim 1, wherein the slot width of the yarn clearer (18) can be adjusted. A yarn feeding device (1) according to claim 1 or 2, wherein at least one of the yarn brakes (16, 40, 17, 30, 41) is configured as a vibrating yarn Line brake (30). The yarn feeding device (1) according to any one of claims 1 to 3, wherein at least one of the yarn brakes (16, 40, 17, 30, 41) is grouped The state becomes a compensating yarn brake (40). A yarn feeding device (1) according to any one of claims 1 to 4, wherein the first yarn brake (16, 40) is vertically disposed in the second yarn brake during operation (17, 30, 41) Above, the yarn path is adjusted to pass through the yarn clearer (18, 42) substantially vertically. A yarn feeding device (1) according to any one of claims 1 to 5, wherein the first yarn feeder is reached at an acute angle with a first yarn guiding guide (16, 40) The yarn path is adjusted to a vertical line. The yarn feeding device (1) according to any one of claims 1 to 6, wherein the second yarn brake (17, 30, 41) is continued at an acute angle by a yarn guiding mechanism. The preceding yarn path is adjusted to a vertical line. A yarn feeding device (1) according to any one of claims 1 to 7, wherein a fixing frame (27) is fixed to the bracket (5) and at least two brakes (16, 40, 17, 30, 41) and the yarn clearer (18, 42) are thereon. The yarn feeding device (1) of claim 8, wherein the fixing frame (27) is provided with at least one yarn guiding member. For example, in any of items 1 to 9 of the patent application scope The yarn feeding device (1), wherein the yarn feeding device (1) is configured to be a positive yarn feeding device.