DE102014104808B4 - Winding machine for winding slivers and method for winding slivers - Google Patents

Abstract

Winding machine for winding slivers, with a winding unit, on or in which a lap roll (15) is formed by means of a winding tube (6), the winding tube (6) being held by a receptacle on the end face which is moved along by means of at least one carriage (10). at least one guide (12) is arranged to be movable, the carriage (10) being designed to move from a winding position to a storage position in which the finished lap roll (15) can be transferred to the receptacle of a transport device (20), characterized in that that a sensor (17) is arranged on or in the winding machine (1) which detects the occupancy of the transport device (20) with cotton rolls (15').

Description

The invention relates to a winding machine for winding slivers, with a winding unit on or in which a lap roll is formed by means of a winding tube, the winding tube being held by a receptacle which is arranged to be movable along at least one guide by means of at least one carriage. Furthermore, the invention relates to a method for winding slivers.

The feeding of flat combing machines that is usual today is done by laps of cotton wool, which were previously produced in winding machines from individual slivers. For this purpose, the winding machine receives the template in strip form from at least one draw frame, with the template being temporarily stored in round or rectangular cans. The winding machine usually consists of a winding unit with at least two winding rollers, on which the lap roll is formed by means of a sleeve. The sleeve is clamped laterally by two winding discs, the winding discs being movable along a solid guide by means of at least one carriage. The movement of the winding plates or the carriage takes place via laterally arranged pneumatic cylinders, with which the winding pressure, i.e. the pressure of the core or the started winding against the winding rollers, is generated. When a predetermined length of wadding, for example 300 m to 400 m, has been wound up, the wadding is torn off, for example by the upstream calender or pressure rollers being braked. According to the prior art, the lap is then conveyed onto a transport carriage by means of a lifting table and/or subsequent tilting of the lap support surface, with which the lap is transported to the combing machine.

Alternative winding devices use an endlessly revolving belt to wind the batting. The process of ejecting the finished cotton roll is also very complex and expensive.

It is also known from the prior art to convey the lap from the gusset between the lap rollers onto a support surface by means of ejectors. The known solutions have the property that the delivery height of the winding machine and the receiving height of the subsequent combing machine must be coordinated. As soon as these heights differ, there are other devices with which the cotton rolls are transported, for example, on the transport carriage located in between.

After EP 1961685 B1 a combined lifting/pivoting device for the cotton roll is provided, with which the cotton roll can be transported on the transport trolley despite the different heights. The device is very complex and expensive mechanically and in terms of control technology, and lengthens the entire winding machine by at least one meter, which is undesirable because of the space situation in the spinning mill.

The DE 10 2010 048 414 A1 discloses a winding machine for winding fiber slivers, in which the winding tube is held clamped at the end between two plates and can be moved along a guide by means of a carriage. The carriage is designed to move the finished roll from a winding position to a storage position for transfer to a transport device.

The object of the invention is to create a winding machine which can transport the finished lap roll onto a transport vehicle with little technical effort.

Furthermore, it is the object of the invention to provide an associated method for winding slivers.

The invention solves the problem by the teaching of claim 1 and 10; further advantageous design features of the invention are characterized by the dependent claims.

According to the technical teaching according to claim 1, the winding machine for winding slivers comprises a winding unit on or in which a lap roll is formed by means of a winding tube, the winding tube being held by a receptacle on the end face which is arranged to be movable along at least one guide by means of at least one carriage is.

The carriage is designed to move from a winding position to a storage position in which the finished lap roll can be transferred to the receptacle of a transport device. A sensor is arranged on or in the winding machine, which determines whether there is a free position for the finished lap roll on the transport device. If the transport device is completely occupied with cotton rolls, the finished cotton roll remains between the winding discs. The sensor also generates a signal for the operating personnel to empty the transport device or to replace it with a new, empty transport device.

In contrast to the prior art, an additional lifting/pivoting device for transferring the lap roll to a transport vehicle is thus completely dispensed with. The machine can thus be made significantly shorter. The fact that the previous existing components can be used unchanged to the To transport lap rolls in one operation from the winding position to a storage position for transfer to a recording of a transport device, an adjustment to different heights of transport carriages or combing machines is not necessary.

The storage position is preferably located above the receptacle of the transport device, so that the lap rolls can fall into the receptacle of the transport device. The transport device can be arranged closer to the winding machine, which means that a height adjustment is no longer necessary due to the difference in height between the recording of the transport device and the storage position. It is only necessary to design the receptacle of the transport device or the support for the cotton roll over a large area so that the cotton roll is not damaged due to the height of the fall. An example of this is in DE 102012013217 A1 disclosed. Alternatively, the cotton roll can also be held by two or three rods that are spaced apart from one another and have a corresponding support surface. In a further alternative, the cotton roll can also be held by a shell, for example made of sheet metal.

Further advantageous embodiments are characterized by the dependent claims.

The storage position is advantageously located above the receptacle of the transport device, so that the lap roll can be dropped into the receptacle with a small difference in height. However, it can also be located to the side of the receptacle of the transport device, in which the cotton roll is deposited from the storage position on a ramp and rolls into the receptacle of the transport device due to its own momentum.

In an advantageous embodiment, the winding unit is formed from at least two winding rollers. With a separate drive for each winding roller, which can be controlled individually, a delay can be set during the production of the lap roll, which minimizes the formation of bubbles.

Particularly preferably, the end-side receptacle is formed by two winding disks, which hold the winding tube in a clamped manner at its end faces. The winding plates thus form a lateral boundary for the slivers to be wound up.

In a further embodiment, a winding plate can be arranged on a separate carriage, which is arranged on both sides of the machine housing. The winding machine has a separate slide with a winding plate on each side, which can be moved towards and back from each other. The winding plates can thus be moved back and forth in the direction of the cores in order to pick up the winding core at the beginning of the winding process and to move the finished roll into a storage position without intermediate units. The winding plates can be moved along the guide by means of the carriages without the lap roll having to be transferred to other units or components.

In order to minimize the difference in height between the storage position and the pickup of a transport carriage, the carriages move along the guide at a travel angle (α) which is a maximum of 60° to the floor, preferably a maximum of 45° to the floor. A low travel angle (α) of the carriage allows the height difference between the storage position and the pickup of the transport device to be reduced.

A further improvement can be achieved in that the carriage is pivotably arranged at least in the storage position. In this way, the difference in height can be further reduced and the lap roll is transferred from such a low height into the receptacle of the transport device that damage to the lap is ruled out. A structurally simple design results if the carriage is arranged such that it can be rotated or pivoted about the lower winding roller. The entire mechanism connected to the slide can thus be pivoted.

For efficient use of the winding machine, at least one carriage can have an opening for the lateral introduction of a winding tube into the winding machine, so that it can be operated automatically with a large supply of winding tubes. Furthermore, it is much safer for the operators if they no longer have to reach into the machine when feeding in the cores.

The method according to the invention for winding slivers in a winding machine has a winding unit on or in which a lap roll is formed by means of a winding tube, the winding tube being held by a receptacle which can be moved along at least one guide by means of at least one carriage, the The winding sleeve can be moved from a winding position to a storage position in order to transfer the finished lap roll into the receptacle of a transport device. At the beginning of the winding process, the winding sleeve is brought into the winding position by the receptacle, the cotton roll is produced and the finished cotton roll is transported to a storage position without the finished cotton roll having to be re-fixed or transported via other components in order to compensate for differences in height.

The carriage is moved in the winding position in the pulling direction in order to generate pressure on the lap roll.

• 1: eine schematische Darstellung einer Wickelmaschine;
• 2: eine weitere Darstellung der erfindungsgemäßen Wickelmaschine;
• 3: eine weitere Variante der erfindungsgemäßen Wickelmaschine;
• 4: eine weitere Variante der erfindungsgemäßen Wickelmaschine.

The invention is explained in more detail below using an exemplary embodiment. It shows:

• 1 : a schematic representation of a winding machine;
• 2 : a further representation of the winding machine according to the invention;
• 3 : another variant of the winding machine according to the invention;
• 4 : another variant of the winding machine according to the invention.

In 1 a winding machine 1 is shown, as is used, for example, in combing preparation in the textile industry. Several slivers 3, which can consist of natural or synthetic fibers, are fed via cans to the winding machine 1 and evened out in a drafting system (not shown). The slivers 3 are further fed via an inlet area 2 to a plurality of pressure rollers 4a-4c, which guide the slivers 3 into the feed area between two winding rollers 5a, 5b and a winding tube 6 for producing a lap roll. A pre-compressor 8 can be arranged in or on the inlet area 2, which evens out the fiber sliver 3. The table calenders arranged in the infeed area 2, the drafting system arranged in front of the table calender and the creel arranged in front of the winding machine 1 are not shown. Alternatively, the lap roll can also be produced within an endlessly circulating belt or between one or two winding rollers and a circulating belt.

In the 2 a lap roll 15' has already been deposited on a transport device 20. In preparation, the sliver 3 was torn off between the pressure rollers 4b and 4c in that the winding rollers 5a and 5b continue to rotate and, for example, the pressure rollers 4b and 4c are stopped very quickly. Alternatively, the sliver 3 can also be torn off between the pressure rollers 4c and the winding roller 5a. One of two carriages 10 can also be seen here, which can be moved obliquely along a guide 12 arranged on both sides of the machine housing. The slide or slides 10 are moved along the guide 12 by means of at least one cylinder 13, for example a pneumatic cylinder. Each carriage 10 has its own winding plate 9 which can be moved towards or away from one another and can hold the winding sleeve 6 in a clamped manner. At the beginning of the winding process, a new winding tube 6 is placed laterally through the opening 11 in the gusset between the winding rollers 5a, 5b. Alternatively, the winding sleeve 6 can also be placed in the gusset between the winding rollers 5a, 5b through another machine opening. The winding plates 9 move with the carriages 10 diagonally downwards into the working position and clamp the winding core 6 . New sliver 3 is introduced via the pressure rollers 4a, 4b, 4c into the nip between the winding rollers 5a, 5b and the winding sleeve 6, so that - after the winding sleeve 6 has been clamped by the winding plates 9, the winding process can be completed by rotating the winding rollers 5a, 5b can start, which represents the beginning of the winding position, which shifts counter to the pulling direction Z as the outer diameter of the lap roll 15 to be formed increases. During the winding process, the cylinder 13 pulls the carriage(s) 10 along the guide 12 in the pulling direction Z in order to build up a static winding pressure or a dynamic winding pressure corresponding to the winding quality to be achieved. The lap roll 15, the winding tube 6 of which is clamped by the winding plate 9, is pulled against the winding rollers 5a, 5b. Alternatively, the lap roll can also be formed exclusively by a band or a band with a roller.

After a predetermined length of 300 to 400 m, for example, the slivers 3 are torn off in the area of the pressure rollers 4a, 4b, 4c or the winding roller 5a. The lap roll 15 is further held by the winding plates 9 which clamp the winding core 6 . The carriage 10 moves with the winding discs 9 and the lap roll 15 from the nip of the winding rollers 5a, 5b along the guide 12 in the storage direction A into a storage position which is located above a receptacle of a transport device 20. In this storage position, the winding discs 9 move apart and allow the lap roll 15 to fall into a receptacle in the transport device 20 .

The next winding sleeve 6 is inserted into the gusset of the winding rollers 5a, 5b via the lateral opening 11. The carriage 10 moves back in the pulling direction and clamps the winding tube 6 between the winding plates 9 so that the next lap roll can be produced.

To minimize the fall height of the lap roll 15, a preferred embodiment provides for the travel angle α of the carriage 10 along the guide 12 to be kept as small as possible, preferably at an angle to the floor of no more than 60°, particularly preferably no more than 45°.

For this purpose, it is provided also to optimize the transport device, in which, for example, the recording as in the DE 102012013217 A1 is designed in which the front pick-up point oriented towards the winding machine is arranged lower than the rear pick-up point.

After executing the 2 the lap roll 15 is placed or dropped in the storage position A on an inclined ramp 16, so that the lap roll 15 rolls into the receptacle of the transport device 20 with little momentum. In this case, the storage position A can also be located laterally next to the receptacle of the transport device 20 . The overall length of the carriage 10, the guide 12 and the cylinder 13 can thus be further shortened, since the lap roll 15 no longer has to be raised approximately vertically above the receptacle of the transport device 20. A slight height difference is then sufficient, at which the ramp 16, on which the lap roll 15 rolls, is inclined to accommodate the transport device 20. The storage position of the lap roll 15 is then located laterally above the receptacle of the transport device 20.

In all variants, a sensor 17 is arranged on or in the winding machine 1, which determines whether there is a free position on the transport device 20 for the finished lap roll 15. Should the transport device 20 be completely occupied with lap rolls 15', the finished lap roll 15 remains between the winding discs 9. The sensor also generates a signal for the operating personnel to empty the transport device 20 or exchange it for a new, empty transport device 20.

As in this exemplary embodiment, the transport device 20 can be designed, for example, as a floor-bound transport carriage which can accommodate 4, 6 or 8 lap rolls 15 and a predetermined number of winding tubes 6 and transports them between a combing machine and the winding machine 1 . The embodiment of 2 shows the indicated deposited lap roll 15 in the receptacle of the transport device 20 and above it the carriage 10 with the winding discs 9 in the storage position. Alternatively, the transport device 20 can also be designed as a conveyor belt or storage table of an automatic conveyor device.

In the embodiment of 3 the carriage 10 with the guide 12 (not shown) and the cylinder 13 including the winding roller 5a is arranged at a flat travel angle α≈30°, as a result of which the difference in height for depositing the lap roll 15 has been significantly reduced. The entire device, including the carriage 10 with the guide 12, the winding discs 9 and the cylinders 13, including the winding roller 5a, was rotated about the center point of the winding roller 5b.

In the embodiment of 4 the carriage 10 has been further shortened since the traversing angle has been further reduced to α≈20°. The carriage 10 with the winding discs 9 and the guide 12 is arranged so as to be rotatable about the center point of the winding roller 5b. In the winding position, the carriage 10 can be arranged, for example, at a travel angle α of 45° and the lap roll can be produced. The carriage 10 can then be pivoted into a storage position at an angle α of, for example, 20°, as a result of which the difference in height for depositing the lap roll is reduced even further. The result is a short and extremely compact winding machine that allows the lap roll to be transferred to a transport vehicle without an additional lifting/pivoting device.

Reference List

1

winding machine

2

inlet area

3

sliver

4a - 4c

pressure rollers

5a, 5b

winding roller

6

winding sleeve

7

material flow direction

8th

booster

9

winding plate

10

Sleds

11

opening

12

guide

13

cylinder

15

cotton wrap

16

ramp

17

sensor

20

transport device

a

travel angle

A

drop direction

Z

pulling direction

Claims (12)

Winding machine for winding slivers, with a winding unit, on or in which a lap roll (15) is formed by means of a winding tube (6), the winding tube (6) being held by a receptacle on the end face which is moved along by means of at least one carriage (10). at least one guide (12) is arranged to be movable, wherein the carriage (10) is formed from a winding position tion to move into a deposit position in which the finished lap roll (15) can be transferred to the receptacle of a transport device (20), characterized in that a sensor (17) is arranged on or in the winding machine (1) which detects the occupancy of the Transport device (20) with cotton rolls (15 ') detects. winding machine after claim 1 , characterized in that the storage position is arranged above the receptacle of the transport device (20). winding machine after claim 1 , characterized in that the winding unit is formed from at least two winding rollers (5a, 5b). winding machine after claim 1 , characterized in that the end-side receptacle is formed by two winding discs (9) which hold the winding tube (6) in a clamped manner at its end faces. winding machine after claim 4 , characterized in that in each case one winding plate (9) is arranged on a separate carriage (10), which are arranged on both sides of the machine housing. winding machine after claim 5 , characterized in that the slides (10) move along the guide (12) at a travel angle (α) which is at most 60° to the floor, preferably at most 45° to the floor. Winding machine according to one of the preceding claims, characterized in that at least one carriage (10) has an opening (11) for the lateral introduction of a winding tube (6) into the winding machine. Winding machine according to one of the preceding claims, characterized in that the lap roll (15) can be transferred into the receptacle of the transport device (20) by means of a ramp (16). Winding machine according to one of the preceding claims, characterized in that the carriage or carriages (10) is designed to be pivotable at least in the storage position. Method for winding slivers in a winding machine with a winding unit, on or in which a lap roll (15) is formed by means of a winding tube (6), the winding tube (6) being held by a receptacle on the front which is held by at least one carriage (10 ) can be moved along at least one guide (12), the winding tube (6) being able to be moved from a winding position to a storage position in order to transfer the finished lap roll (15) to the receptacle of a transport device (20), characterized in that the carriage (10) can be moved in the winding position in the pulling direction (Z) in order to generate pressure on the lap roll (15). procedure after claim 10 , characterized in that the storage position is above the receptacle of the transport device (20). procedure after claim 10 , characterized in that the end-side receptacle is formed by two winding discs (9) which hold the winding tube (6) in a clamped manner at its end faces.

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