CN108026671B

CN108026671B - Device for depositing fibre sliver into sliver can

Info

Publication number: CN108026671B
Application number: CN201680050703.2A
Authority: CN
Inventors: 马库斯·施密茨
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Trutschler Group Europe
Priority date: 2015-09-04
Filing date: 2016-07-06
Publication date: 2020-11-03
Anticipated expiration: 2036-07-06
Also published as: BR112018004233B8; CN108026671A; EP3344807B1; DE102015114816A1; EP3344807A1; BR112018004233A2; EP3138943A1; WO2017036570A1; BR112018004233B1

Abstract

The invention relates to a device for storing a sliver in a can, comprising a can winding head (1) having drawing rollers (20,21) for transporting the sliver into the can via a rotatable carousel arranged below the can winding head (1), and comprising at least one sliver funnel (17) arranged so as to be pivotable for automatically breaking the sliver when the can is replaced. The invention is characterized in that the device comprises means by which the distance between the drawing rollers (20,21) can be increased and by which at least the sliver funnel (17) can be moved away from the drawing rollers (20, 21).

Description

Device for depositing fibre sliver into sliver can

Technical Field

The invention relates to a device for depositing a sliver into a can, comprising a can winding head having a drawing roller for transporting the sliver into the can via a rotatable carousel arranged below the can winding head and having at least one sliver funnel arranged so as to be pivotable for automatically breaking the sliver when the can is replaced.

Background

The fibre sliver provided by the spinning preparation machine in the known prior art is received by a so-called can coiler. The fiber strand is transported by the guide aid via a fiber strand funnel to a calender roll pair, which deposits the fiber strand via a rotating disk into the already erected can. If the can is full, the fiber strand is broken, wherein the full can is removed and the empty can is replenished.

DE 3807239 a1 describes a can creel head of a can changer, in which the sliver from a carding machine is guided into a sliver funnel and, by means of a calender roll, to a rotating sliver channel of a rotating disk. The fiber strips are stored in the sliver cans in a cycloid shape through the rotation motion of the rotary disc and the combination of the rotating sliver cans. In order to replace the can, the fiber strand must be torn off and introduced into a new can. For this purpose, the fiber strand is clamped inside the fiber strand funnel, while the fiber strand funnel leaves the calender roll, whereby the fiber strand is torn off. After the tearing process, the distance between the fiber web funnel and the calender roll is reduced again, so that the calender roll collects the torn fiber web end, thereby ensuring that the can changer automatically continues to operate.

The disadvantage is that the funnel must be opened manually by the operator in order to remove the blockage or for cleaning. The calender rolls are then opened separately from the lever. This is time consuming and difficult for the operator to achieve, especially for large cans, in unfavourable positions about 1.60 to 1.80 metres high.

Disclosure of Invention

The object of the invention is to improve a device for breaking fiber strands on a strand changer. The device is intended in particular to be constructed in a simple and operationally friendly manner.

This object is achieved by a device for depositing a sliver into a can, having a can winding head with a drawing roller for transporting the sliver into the can via a rotatable carousel arranged below the can winding head, and having at least one sliver funnel arranged pivotably for automatically breaking the sliver when the can is changed.

The invention comprises the technical teaching that the device has a device by means of which the distance of the draw-off rollers from each other can be increased and by means of which at least the sliver funnel can be moved away from the draw-off rollers. This simplifies the maintenance procedure, since the winding head can be opened completely by just one operation in order to perform the cleaning operation.

According to an advantageous embodiment, the automatic severing of the fiber strand is achieved by a drum which moves a fiber strand funnel away from the drawing roller, while the fiber strand is gripped by the drawing roller. The drum can be operated automatically by the control of the can coiler during the change of the can, or it can act as a rigid part which rotates the funnel with the sliver guide away from the draw-off roller.

According to a further advantageous embodiment, the device has at least one rotary joint, by means of which the drum and a drawing roller can be moved. Other mechanical parts can be mounted on the rotating hinge, and not only the traction roller but also the cylinder can be movably mounted by using the mechanical parts.

According to a further advantageous embodiment, the rotary joints are designed as separate rotary joints, which are connected to one another by an eccentrically arranged pin. This eccentrically arranged pin on the one hand makes room for the cylinder, but on the other hand also serves as a rotational point of action for the mechanical displacement of the cylinder, whereby the sliver funnel together with the preceding funnel is moved away from the drawing roller. For this purpose, the cylinder is connected to an eccentrically arranged pin.

One drawing roller is advantageously arranged in a stationary manner, while the second drawing roller is arranged in a movable manner. This movable arrangement is realized directly or indirectly rotatably on the frame.

The rotational movement of the rotary joint is transmitted to the drawing roller by means of at least one articulated connection, so that the drawing roller is moved away from the fixedly arranged drawing roller, whereby the clamping action of the drawing roller on the fiber strand can be cancelled and a space for cleaning is created between the drawing rollers.

The piston rod of the cylinder can be retracted with pressure loading, advantageously using 5/2 (two-position five-way valve) directional control valves. The cylinder thus acts as a rigid component when the lever is manually actuated, and the rotational movement of the sliver funnel can be realized by means of the eccentrically arranged pin.

The piston rod of the cylinder can advantageously be moved into a pressureless intermediate position by means of an 5/3 (three-position five-way valve) selector valve, whereby the cylinder and the piston rod together function as a telescopic support. Whereby the sliver funnel is opened manually together with the previous section of funnel.

Drawings

Other means of improving the invention will be explained in detail below using the drawings together with the description of the preferred embodiments of the invention. In the figure:

FIG. 1 shows a carding machine and a can changer;

fig. 2 shows a can end according to the invention in a ready-to-run position;

FIG. 3 shows a perspective view of a can end with a sliver funnel turned up;

fig. 4 shows a top view of the can end of fig. 2;

fig. 5 shows the can end with the draw-off rollers moved away from each other.

Detailed Description

Fig. 1 shows a carding machine a, from which a sliver B is guided via a lap top 1 into a can changer C and stored in cans D1, D2. The can changer C is in this exemplary embodiment designed as a linear can changer, wherein the winding head 1 is arranged so as to be linearly movable along a frame or a rack wall.

The can changer C can also be designed as a rotary can changer, wherein the cans D1, D2 are replaced by a rotary device below the stationarily arranged can head 1. The winding head 1 is arranged in this embodiment below a housing, which is not shown in detail, and is described in detail in the following figures.

Fig. 2 shows the can end 1 in a ready-to-run position. Mainly the previous hopper 16 with the sliver hopper 17 (see fig. 3) and the

draw rollers

20,21 arranged thereunder. The sliver is guided by guide rollers, for example from a carding machine, to the can end 1 of a can changer and is guided there by a preceding funnel 16 and a sliver funnel 17 arranged therebelow. The

drawing rollers

20,21 ensure a continuous transport of the sliver into the rotating can arranged below the can head 1. In order to store the sliver in the can in a cycloidal shape, a rotating disk, not shown, is located below the can end 1, on which a curved sliver channel is arranged in a rotatable manner. The present application makes full reference to DE 3807239. During the exchange of the can, the sliver is clamped in the region of the sliver funnel 17 and torn off by increasing the distance between the sliver funnel 17 and the drawing rollers 20,21 (fig. 3). The distance is increased by a cylinder 18 which, for example, can be pneumatically driven by its piston rod 19 to act on the actuating element 13 below the pivot point 12. The sliver funnel 17 and the preceding funnel 16 are arranged below the plate 10, which is reinforced on the bottom by one or more angle-shaped reinforcing profiles 11 and is mounted so as to be pivotable about the pivot point 12. In this exemplary embodiment, two reinforcing profiles 11 are arranged at a distance in the region of one long side of the plate 10. The connecting rod designed as a pivot point 12 passes through the two reinforcing profiles 11 and is fixed to the frame 2 of the winding head 1. Below the pivot point 12, a connecting rod or pipe is likewise formed as the active element 13, which likewise passes through the two reinforcing profiles 11. The piston rod 19 of the cylinder 18 acts on the reaction element 13 and swings the sliver funnel 17 in an arc away from the

drawing rollers

20, 21. In this movement, the fiber strand clamped in the fiber strand funnel 17 or in the preceding funnel 16 is interrupted. Above the plate 10, in front of the preceding funnel 16, a first pre-compression ring 15 and a second pre-compression ring 14 can be arranged, by means of which the fluffy fiber strands can be pre-compressed.

In the embodiment of fig. 3, the piston rod 19 of the cylinder 18 is extended and presses the action element 13 in a clockwise direction about the pivot point 12, so that the sliver funnel 17, together with the previous section funnel 16, is moved away from the

draw rollers

20,21, which are also arranged in the closed position, and the sliver is torn off.

The clamping of the fiber strand inside the fiber strand funnel 17 can be achieved by a clamping element, not shown, which can be pneumatically actuated, for example, is arranged on or in the wall of the fiber strand funnel 17 and clamps the fiber strand. Alternatively, the inner diameters of the preceding funnel 16 and of the sliver funnel 17 can be adjusted narrowly to the dimensions of the sliver to be processed such that the sudden movement of the preceding funnel 16 and of the sliver funnel 17 away from the drawing

rollers

20,21 is sufficient to tear the sliver.

In this position (fig. 3), the sliver funnel 17 can be cleaned from the previous section of funnel 16 when the sliver is broken. In the case of a fibre sliver already wound around the drawing

rollers

20,21, the drawing rollers must be moved away from one another.

The view of fig. 4 shows a top view of the can end 1, which appears with the front funnel 16 and the sliver funnel 17 open. The drum 18 with the sliver funnel 17 is here rotated upwards by means of the piston rod 19, whereby the sliver funnel 17 is moved away from the drawing

rollers

20,21 holding the sliver and thereby tears the sliver. This is automatically achieved by a controller which supplies the cylinder 18 with pressurized air. In order to move the wound fiber strand away from the drawing

rollers

20,21, the drawing rollers must be moved away from each other. The drawing

rollers

20,21 are supported in a frame 33 by means of their

drive bearings

34,35 and have

drive journals

23,24 opposite the

drawing rollers

20,21, which are driven by a motor via belts, not shown. At least one of the drawing

rollers

20 or 21 is arranged in a stationary manner via a drive bearing 34 or 35 and a

drive journal

23 or 24, wherein the

second drawing roller

20 or 21 is arranged adjustably. Adjustability for cleaning and maintenance is achieved in this embodiment in which the drawing roller 21 is arranged in a stationary manner on the frame 33 by means of the drive bearing 35 and the drive journal 24. The second adjustable drawing roller 20 is mounted pivotably in the pivot bearing 25 of the frame 33 by means of the drive bearing 34 and the drive journal 23 in such a way that the distance between the drawing

rollers

20,21 is adjustable. For this purpose, the transmission bearing 34 is connected to the rotary joint 27a,27b via a connecting rod 32 and the articulated connection 31.

For operation during maintenance or cleaning, the invention provides a lever 26 by means of which the sliver funnel 17 is manually moved upwards, while the draw-off

rollers

20,21 can be moved away from each other. The lever 26 interacts with axially spaced pivot joints 27a and 27b, which are mounted in bearings 30 arranged in a stationary manner. The pivot joint 27a,27b has a section in its length, which comprises two pivot plates 28a and 28b and a pin 29 which is arranged eccentrically with respect to the pivot joint 27a,27b and connects the pivot plates 28a,28 b. The cylinder 18 is fixed to the pin 29 and is supported on the pin by means of compressed air during automatic actuation.

During the rotation of the pivot joints 27a,27b, the eccentrically arranged pivot pin 29 pivots in a circular arc about the pivot joints 27a,27b, as a result of which the cylinder 18 acts with the piston rod 19 on the point of action 13 and as a result the sliver funnel 17 pivots away from the draw-off

rollers

20, 21.

Since the lever 26 is manually actuated in the clockwise direction, a rotation of the connecting end 31, to which the connecting rod 32 is articulated, is simultaneously effected. The connecting rod 32 moves toward the lever 26 and, via the pivot bearing 25, pivots the draw roller 20 with the drive bearing and the drive shaft 23, so that simultaneously the sliver funnel 17 pivots with the movement and the draw roller 20 is moved away from the draw roller 21.

When using the 5/2 diverter valve for the cartridge 18, the lever 26 will be manually operated during maintenance. The sliver funnel 17 is thereby pivoted away from the drawing

rollers

20, 21. The drawing

rollers

20,21 are moved away from one another or pivoted away and can be cleaned. The cylinder piston is retracted here, since it is acted upon by the 5/2 directional control valve pressure and acts as a rigid component which, via an eccentrically arranged pin, enables a pivoting movement of the sliver funnel.

When using the 5/3 diverter valve for the cartridge 18, the diverter valve is manually brought to a neutral position by an operator using a push button. The cylinder 18 is pressureless and functions like a bellows. This makes it possible to first oscillate the sliver funnel 17 and then subsequently to move the

drawing rollers

20,21 away from one another. This makes it possible to tear the fiber strand first and then to clean the fiber strand funnel 17 and the preceding funnel 16 and the

drawing rollers

20, 21. This can be achieved, for example, by a cam or a mechanical clutch offset between the rotary joint 27b and the connection end 31.

List of reference numerals

A carding machine

B fiber strip

C-shaped can changer

D1, D2 can

1-turn can end

2 frame

10 board

11 reinforced section bar

12 point of rotation

13 point of action

14 precompression ring

15 precompression ring

16 front section funnel

17 fiber strip funnel

18 barrel

19 piston rod

20 traction roller

21 draw roller

22 open pores

23 drive journal

24 drive journal

25 rotating bearing

26 Lever

27a,27b swivel hinge

28a,28b rotating plate

29 Pin shaft

30 bearing

31 connecting end

32 connecting rod

33 frame

34 drive bearing

35 drive bearing

Claims

1. Device for depositing a sliver into a can, comprising a can winding head (1) having drawing rollers (20,21) for transporting the sliver into the can via a rotatable carousel arranged below the can winding head (1), and comprising at least one pivotably arranged sliver funnel (17) for automatically breaking the sliver when the can is replaced, characterized in that the device comprises means by which the distance between the drawing rollers (20,21) is increased, and by which at least the sliver funnel (17) is moved away from the drawing rollers (20, 21).

2. An apparatus according to claim 1, characterized in that the automatic breaking of the fibre sliver is effected by a cylinder (18) which moves a sliver funnel (17) away from the draw rollers (20,21), while the fibre sliver is gripped by the draw rollers (20, 21).

3. The apparatus as claimed in claim 2, characterized in that the device has at least one rotary hinge by means of which the drum (18) and a draw roller are moved.

4. A device according to claim 3, characterised in that the swivel hinges are constructed as separate swivel hinges (27a,27b) which are connected to each other by an eccentrically arranged pin (29).

5. The apparatus as claimed in claim 4, characterised in that the cylinder (18) is connected to an eccentrically arranged pin (29).

6. Device according to claim 1, characterized in that one draw roller (20 or 21) is arranged stationary.

7. Device according to claim 1, characterized in that a draw roller (20 or 21) is arranged directly or indirectly rotatably on the frame (33).

8. A device as claimed in claim 3, characterized in that the rotational movement of the rotary joint (27a,27b) is transmitted to the rotatably mounted drawing roller (20) by means of at least one joint end arranged in an articulated manner, so that the drawing roller is moved away from the stationarily arranged drawing roller.

9. An apparatus according to claim 2, characterized in that the piston rod (19) of the cylinder (18) is pressure-free switched by means of an 5/3-reversing valve.

10. A device according to claim 3, characterised in that the swivel hinges (27a,27b) can be operated by means of levers (26).

11. Device according to any one of the preceding claims, characterized in that the increase of the mutual distance of the draw rollers (20,21) and the movement of the funnel (17) away from the draw rollers (20,21) are effected simultaneously.

12. Apparatus according to claim 9, characterized in that the sliver funnel (17) is first moved away from the draw rollers (20,21) and then the draw rollers (20,21) are moved further apart from each other.