Carding machine
阅读说明:本技术 梳理机 (Carding machine ) 是由 博多·赫特克斯 斯文·汤姆森 于 2018-07-03 设计创作,主要内容包括:本发明涉及一种用于由纤维材料制造纤维网的梳理机,所述梳理机包括至少一个锡林(2),并且包括沿着工作方向紧接着地布置的两个道夫和压辊(8),所述压辊与所有布置在锡林(2)下游的道夫处于作用连接中,其中梳理机(1)构造用于,将至少两层散纤维(20)借助于至少两个道夫向压辊(8)递交,其中借助压辊(8)将至少两层散纤维中的每一层分别地压缩并且将其在压辊(8)上集合成为唯一一层散纤维(20)并且将该层散纤维(20)借助递交辊(9)为了进一步的处理在梳理机的出料侧处拉出。本发明的特征在于,压辊(8)具有至少为600mm的直径。(The invention relates to a carding machine for producing a fibrous web from a fibrous material, comprising at least one cylinder (2) and comprising two doffers arranged immediately downstream of the cylinder (2) in the working direction and a press roll (8) which is in operative connection with all the doffers arranged downstream of the cylinder (2), wherein the carding machine (1) is designed to transfer at least two layers of loose fibres (20) to the press roll (8) by means of the at least two doffers, wherein each of the at least two layers of loose fibres is compressed separately by means of the press roll (8) and is integrated into a single layer of loose fibres (20) on the press roll (8) and the layer of loose fibres (20) is drawn off for further processing by means of a transfer roll (9) at the discharge side of the carding machine. The invention is characterized in that the press roll (8) has a diameter of at least 600 mm.)
1. Carding machine for producing a fibrous web from a fibrous material, comprising at least one cylinder (2), and comprising two doffers (6, 7, 11) and a pressure roller (8) arranged immediately in the working direction, the press rolls are in operative connection with all doffers (6, 7, 11) arranged downstream of the cylinder (2), wherein the carding machine (1) is designed to transfer at least two layers of loose fibres (20) to the press roll (8) by means of at least two doffers (6, 7, 11), wherein each of at least two layers of loose fibres is compressed separately by means of a press roll (8) and integrated on the press roll (8) into a single layer of loose fibres (20) and the layer of loose fibres (20) is drawn off for further processing by means of a delivery roll (9) at the discharge side of the carding machine, characterized in that the press roll (8) has a diameter of at least 600 mm.
2. Carding machine according to claim 1, characterised in that the press rolls (8) have a diameter of at least 800 mm.
3. A carding machine as claimed in claim 1 or 2, characterised in that the doffers (6, 7) have a diameter of at least 350mm, preferably at least 380mm, particularly preferably at least 400 mm.
4. A carding machine as in claim 1, characterised in that the loose fibres (20) are guided from the cylinder (2) onto the doffers (6, 7, 11) by means of transfer rolls (5).
5. A carding machine as claimed in claim 4, characterised in that the transfer roller (5) is configured as a random roller.
6. A carding machine as in any of the preceding claims, characterised in that the doffers (6, 7, 11) are operated with the same peripheral speed.
7. Carding machine according to claim 4, characterised in that the upper doffer (6) has a larger diameter than the lower doffer (7).
8. A carding machine as in any of the preceding claims, characterised in that the doffers (6, 7, 11) have a lower peripheral speed than the transfer rolls (5).
9. A carding machine as in any of the preceding claims, characterised in that the doffers (6, 7, 11) have a higher peripheral speed than the press rolls (8).
10. A carding machine as in any of the preceding claims, having three to six doffers.
11. A carding machine as claimed in any preceding claim, characterised in that the press rolls (8) are configured as card clothing rolls or as pin rolls.
12. A carding machine as in any claim hereinbefore, characterized in that the press rolls (8) are internally sucked.
13. A carding machine as in any of the preceding claims, characterised in that the doffers (6, 7, 11) have a direction of rotation opposite to the pressure rollers (8) and the teeth of the clothing are obliquely directed opposite to the direction of rotation of the respective roller (6, 7, 8, 11).
Technical Field
The invention relates to a carding machine for producing a fibrous web from a fibrous material, comprising at least one cylinder and comprising two doffers arranged immediately downstream in the working direction and a press roll in operative connection with all doffers arranged downstream of the cylinder, wherein the carding machine is designed to transfer at least two layers of loose fibres to the press roll by means of the at least two doffers, wherein each of the at least two layers of loose fibres is compressed separately by means of the press roll and integrated into a single layer of loose fibres on the press roll and the layer of loose fibres is drawn off for further processing at the discharge side of the carding machine by means of the transfer roll.
Background
Conventional carding machines have a cylinder from which loose fibres are removed at one or more locations. Each layer of loose fibres is compressed individually and then stacked or simply loosely stacked on top of each other on a take-off device, such as a conveyor belt.
EP0661394B1 describes a carding machine in which overlapping and compression of the loose fibre layers is effected on a first or second press roll. The carding machine has the disadvantage that after the cylinder at least one random roll, one doffer and two successive press rolls are arranged for each layer of loose fibres, which increases the size of the carding machine.
Disclosure of Invention
The aim of the invention is to provide a short carding machine with high carding efficiency and good connection of loose fiber layers to each other.
The invention solves the proposed task by the teaching according to claim 1. Further advantageous embodiments of the invention are characterized by the dependent claims.
According to the technical teaching of claim 1, a carding machine for producing a fibrous web from a fibrous material comprises at least one cylinder with at least two doffers arranged one behind the other in the working direction. The carding machine further comprises a press roll which is in operative connection with all doffers arranged downstream of the cylinder, wherein the carding machine is designed to transfer at least two layers of loose fibers to the press roll by means of at least two doffers, wherein each of the at least two layers of loose fibers is compressed separately by means of the press roll and integrated on the press roll into a single layer of loose fibers and the layer of loose fibers is drawn off for further processing by means of the transfer roll at the discharge side of the carding machine.
The invention is characterized in that the press rolls have a diameter of at least 600 mm. Since the peripheral speed of the press rolls is also lower than the peripheral speed of the doffers below and above, it is achieved that at least two layers of loose fibres are compressed and overlapped before the extraction means inside the carding machine. The structural length of the carding machine is increased, usually by increasing the roll diameter. Surprisingly, it has been shown that a number of advantages are combined by increasing the roll diameter. On the one hand, positions are provided for the delivery of more loose fibre layers onto the press roll with more and larger doffers. At least one roll and one or two further drawing devices can then be dispensed with, which reduces the overall length of the carding machine. The bearing positions, the drive and the associated synchronization are thereby also omitted, which simplifies the operation of the carding machine, in particular with regard to control.
A further advantage is that, due to the increase of the diameter of the press rolls to at least 600mm, the peripheral speed of the press rolls and thus the centrifugal force is reduced, so that fibre fly-around can be reduced.
Further reduction of fiber fly-off may preferably be achieved by increasing the diameter of the press roll to a diameter of at least 800 mm. The dimensions described are also advantageous in view of the geometrical arrangement of the upstream doffer, since this can also be increased. The possibility of increasing the press roll to a diameter of at least 800mm is achieved by up to six doffers each compressing or elongating a stack or a layer of loose fibres individually together with the press roll and integrating and overlapping these individual stacks or layers of loose fibres on the press roll.
The diameters given here relate to the roll diameter which is not clothed. The transport path of the fibers from the feed side via the cylinder to the discharge side is considered here as the working direction.
The doffer preferably has a diameter of at least 350mm, preferably a diameter of at least 380mm, particularly preferably a diameter of at least 400 mm. Increasing the diameter of the doffer decreases the peripheral speed at which the bulk fibers are continuously transported by the peripheral speed. Reducing the peripheral speed reduces the centrifugal forces acting on the fibres. The fiber fly-away is thereby reduced, so that the productivity is increased at high carding quality.
In a preferred embodiment, the doffer is designed in such a way that it is operated at the same peripheral speed. Whereby the subsequent press rolls compress or elongate each layer of loose fibres or each stack of loose fibres in the same way.
Preferably, the loose fibres are guided from the cylinder to the doffer by means of transfer rolls. Additional lengthening or compression of the bulk fibres can be achieved by the transfer rollers, whereby the mixing of the bulk fibres can be improved.
The transfer roll can be designed as a random roll, with which the MD/CD ratio of the fibers can be optimized.
In a preferred embodiment, the upper doffer has a larger diameter than the lower doffer. This provides a free space for the structural design, so that up to six doffers with different stepped diameters can be brought into operative connection with the pressure roller.
Since the doffer has a lower peripheral speed than the transfer roll, a compression of the loose fibres is achieved, which contributes to a good mixing.
All the layers or bundles of loose fibers are compressed individually during the transfer from the doffer to the press roll by the higher peripheral speed of the doffer compared to the press roll and are subsequently collected and overlapped on the press roll.
The carding machine can preferably have up to six doffers which are simultaneously in operative connection with the press rolls. This allows a high productivity to be achieved while the carding machine has a short overall length.
The press roll can advantageously be configured as a card clothing roll or as a pin roll.
The internal suction of the press rolls improves the collection and overlapping of the individual loose-fibre layers, in particular when the loose-fibre layers or the loose-fibre bundles have a very low weight.
Drawings
The invention is further explained below on the basis of possible, schematically illustrated embodiments. Shows that:
FIG. 1 is a carding machine according to the invention with a discharge side;
FIG. 2 is another embodiment of a carding machine having an outfeed side according to the invention;
FIG. 3 is another embodiment of a carding machine having an outfeed side according to the invention.
Detailed Description
Fig. 1 shows a carding machine 1 according to the invention, which has an unillustrated infeed side for a fiber strand and an outfeed
In the carding machine 1, the fiber bundles are guided at the feed side of the device and are guided via rollers, not shown here, of the front drum, or directly to the
The invention is characterized in that the
Further reduction of fiber fly-away can be achieved by increasing the diameter of the
A further advantage of the invention is that the
Alternatively, it is also possible to run the
The
The following embodiments relate to exemplary carding machine configurations having a working width of 2.5 m. The height without clothing gives the diameter of the roll.
TABLE 1
Fig. 2 shows a further exemplary embodiment of a carding machine 1 according to the invention, which has an unillustrated infeed side for the fiber strand and an
In contrast to the exemplary embodiment of fig. 1, the
The clothing or teeth of the two
By enlarging the
A further advantage of the invention is that the
As the diameter of the
The following embodiments relate to exemplary carding machine configurations having a working width of 2.5 m. The height without clothing gives the diameter of the roll.
TABLE 2
Since the
Alternatively, it is also possible to run the
Increasing the roll diameter of the
The exemplary embodiment of fig. 3 differs from the exemplary embodiment of fig. 2 only by a third doffer 11, which is arranged between the
Alternatively, it is also possible to drive the
The
The press rolls 8 are configured as card clothing rolls or pin rolls depending on the fiber quality. Further improvements to the receiving or stacking of loose fibre layers can be achieved by the
The
List of reference numerals
1 carding machine
1b discharge side
2 Cylinder
3 stripping roller
4 working roll
5 transfer roll
6 doffer
7 doffer
8 press roll
9 delivery roll
10 conveyor belt
11 doffer
20 bulk fiber
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