CN219793228U - Guide element for a carding machine and carding machine - Google Patents
Guide element for a carding machine and carding machine Download PDFInfo
- Publication number
- CN219793228U CN219793228U CN202320288295.1U CN202320288295U CN219793228U CN 219793228 U CN219793228 U CN 219793228U CN 202320288295 U CN202320288295 U CN 202320288295U CN 219793228 U CN219793228 U CN 219793228U
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- roller
- roll
- redirecting
- carding machine
- gap
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- 238000009960 carding Methods 0.000 title claims abstract description 59
- 239000000835 fiber Substances 0.000 claims abstract description 64
- 238000010030 laminating Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 239000004753 textile Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Preliminary Treatment Of Fibers (AREA)
Abstract
The utility model relates to a guide element for a carding machine and to a carding machine, the carding machine (A) comprising a doffer roller (6) for doffing a fibre web from a main drum (4), a top calender roller (8 a), a bottom calender roller (8 b) arranged below the top calender roller (8 a), a redirecting roller (7) for redirecting fibres from the doffer roller (6) to the calender rollers (8 a, 8 b) and a brush roller (10) for stripping accumulated fibres at the surface of the redirecting roller (7). The carding machine (a) further comprises at least one guiding element placed between the redirecting roll (7) and the top calender roll (8 a) to reduce the space (17) between the redirecting roll (7) and the top calender roll (8 a), thereby providing a tighter gap with respect to the redirecting roll (7) and the top calender roll (8 a). At least one edge of the guide member prevents fibers from entering between the redirecting roll (7) and the top calender roll (8 a) in an upward direction.
Description
Technical Field
The utility model relates to a textile carding machine. In particular, the utility model relates to a guide element for fibre transfer in a carding machine.
Background
Carding is a mechanical process that opens, removes debris and neps, breaks up clumps of cotton and messy fibers, and then aligns each fiber so that they are substantially parallel to each other. Finally, the mixed fluffed form of the textile material is converted into a string in the form of a soft, untwisted sliver. The fibre mats fed to the carding machine should have a high degree of uniformity to ensure consistent opening and carding. This uniformity is achieved by a chute feed system which is aimed at delivering a uniform bulk density and a uniform linear density of the fibrous sheet to the card.
The fibers opened and cleaned by the licker-in system are transferred to the main drum by a stripping operation. The fibers stripped from the licker-in by the cylinder are transferred to a carding zone located between the main cylinder and the cover. In principle, the carding operation is completed when the wires of the two surfaces are inclined in opposite directions and the direction and speed of movement are such that one surface passes over the other surface, in a clothing-intersecting configuration. The cover plate is a wire covered rod that rotates at a very low speed against the high speed drum.
The fibers exiting the carding zone form a very thin web. The weight of the web is determined by the degree of carding, such as the setting of the cover or cylinder, the relative carding speed, and the type of cloth on the cylinder and cover. The wire is removed from the main cylinder by another cylinder called a doffer. The substantial reduction in doffer surface speed compared to the drum surface speed can cause coagulation effects. The fiber web is stripped from the doffer by a stripper roll or a redirect roll. The web then passes through a pair of squeeze rolls or nip rolls, after which it eventually builds up in the width direction to the shape of a fiber bundle. The calender rolls compress the fiber bundles to provide the material with better integrity and a stable flow rate. The fiber bundle or carded sliver travels upward over the guide pulley to enter the winding system. The system includes a trumpet guide block and another pair of calender rolls that convey the carded sliver through a rotating tube into a carded sliver can. The compressed sliver is then stored in a sliver can by a winding device.
In the above arrangement, there is always a space or gap between the stripper roll or redirect roll and a pair of laminating rolls. This is due to the difference in diameter of the redirecting roll and the top calender roll as shown in fig. 1 of the known arrangement disclosed in european patent application EP1057905 A1. In particular when a distance of 0.1 mm to 0.2 mm is provided between the redirecting roll and the laminating roll, said gap has a negative effect on the fibre web. Typically, it will cause the fibers to transfer or escape through the gap and will create a fiber transfer fly between the redirect and top nip rolls. Moreover, the fibers stuck to the outer surface of the redirecting roll cannot be completely transferred from the redirecting roll, and the fibers stuck to the outer surface of the redirecting roll become scrap when passing through the brush roll and the brush roll aspirator. Sometimes, the fibers released from the redirecting rolls are transported through the gap by a brush roll aspirator. This is an undesirable effect, which increases the loss of quality fibres, affecting the transfer efficiency of the fibre web.
Therefore, for high throughput of desirable quality, it is necessary to develop a fiber transfer between the redirect roller and the top laminating roller that will overcome the drawbacks present in existing machines.
Disclosure of Invention
The main object of the present utility model is to effectively guide the fibers into the textile carding machine between the bend and the roller pair.
Another object of the utility model is to avoid return of high quality fibre material to the brush roll in the carding machine.
It is a further object of the present utility model to reduce fiber loss and sliver breakage due to wire-mesh stacking and to improve the efficiency of the carding machine.
According to the utility model, the carding machine is provided with a chute type feeding device, a licker-in roller, a main roller, a rotary cover plate, a doffer roller, a bend roller and a pair of rolling rollers; the delivery area comprises a winding unit with a sliver storing barrel. The fibers exit the carding zone (doffer outlet) and are transferred in the form of a very thin web through a redirection roll and a pair of calender rolls. Further, the fibrous web is compressed into a sliver by passing through compression and calender roll equipment.
In order to guide the fibre web effectively, a web guide element is arranged between the redirecting roll and the top calender roll. The guide element acts as a guide for the fibre transfer and also provides a higher fibre transfer efficiency from the redirecting roll to the top calender roll. Therefore, the guide element fills the gap between the rollers, avoiding the return of high quality fibrous material to the brush roller aspirator.
According to a main aspect of the utility model, the wire guide has a uniform or reduced/increased gap from the front with respect to the redirecting roll and the top calender roll and is located below the top calender roll axis.
The bottom surface of the wire guide has a uniform gap with respect to the redirect roller lower cover.
According to another aspect of the utility model, the wire guide element has a uniform gap or a decreasing/increasing gap from the front with respect to the redirecting roll and the top calender roll and is located above the top calender roll axis.
In one aspect of the utility model, a carding machine is provided. The carding machine comprises a doffer roller for doffing a fiber screen from a main drum, a top grinding roller, a bottom grinding roller arranged below the top grinding roller, a direction-changing roller for redirecting fibers from the doffer roller to the grinding roller and a brush roller for stripping accumulated fibers on the surface of the direction-changing roller. The carding machine further includes at least one guide member disposed between the bend roller and the top nip roller to reduce the space between the bend roller and the top nip roller, thereby providing a tighter gap relative to the bend roller and the top nip roller.
According to the utility model, the guide element is placed in a position lying below between the redirecting roll and the top calender roll.
According to the utility model, the guide element is placed in an upper position between the redirecting roll and the top calender roll.
According to the utility model, the tighter gap is a uniform gap.
According to the utility model, the tighter gap is a converging gap.
According to the utility model, the tighter gap is a divergent gap.
In another aspect of the utility model, a guide element for a carding machine is provided. The guide element includes at least one long edge. The guide element further comprises at least one short edge arranged opposite the long edge. The guide element further comprises a first arcuate edge disposed adjacent the long edge and the short edge. The guide element comprises a second arcuate edge opposite the first arcuate edge and disposed adjacent the long and short edges. The guide member is disposed between the redirection roller of the carding machine and the top nip roller of the carding machine in such a manner that the first arcuate edge is disposed in the vicinity of the redirection roller and the second arcuate edge is disposed in the vicinity of the top nip roller to reduce the space between the redirection roller and the top nip roller, thereby providing a tighter gap relative to the redirection roller and the top nip roller. At least one edge of the guide member prevents fibers from entering in an upward direction between the redirect roller and the top laminating roller.
According to the utility model, the tighter gap is a uniform gap.
According to the utility model, the tighter gap is a converging gap.
According to the utility model, the tighter gap is a divergent gap.
Drawings
Fig. 1 shows a textile carding machine according to the utility model.
Fig. 2 and 2a show a conventional fibre transfer between a bend roll and a calender roll of a carding machine.
Fig. 3a and 3b show a fibre web guide element arranged between a redirection roll and a top crushing roll of a carding machine according to a preferred embodiment of the utility model.
FIG. 3c shows an upper fixed guide between a bend roll and a top nip roll of a carding machine according to another embodiment of the utility model.
Reference numerals:
a-carding machine, 1-chute feeder, 2-feeding device, 3-licker-in, 4-main cylinder, 5-revolving deck, 6-doffer roller, 7-redirecting roller, 8-pair of roller, 8 a-top roller, 8 b-bottom roller, 9-delivery zone, 10-brush roller, 11-redirecting roller lower cover or guide plate, 12-normal fiber transfer flow, 13-return material of brush roller, 14-fiber screen guide element, 15-fixed guide element, 16-brush roller aspirator, 17-space, 18-tighter gap.
Detailed Description
In fig. 1 a textile carding machine according to the utility model is shown. Carding is a subsequent process of opening and picking. The carding machine A is provided with a chute type feeder 1, a feeding device 2, a licker-in roller 3, a main roller 4, a rotary cover plate 5, a doffer roller 6, a bend roller 7 and a pair of rolling rollers 8; the delivery area 9 comprises a winding unit with a sliver depositing bucket (not shown in the figures).
The fibre clusters coming from the scutching line are fed into the carding machine a in the form of a fibre web or sheet. The chute feeder 1 maintains a continuous and uniform web supply to the card a. The fibre web coming out of the chute 1 is supplied to the carding system with the aid of a feed device 2, the feed device 2 comprising a feed roll and a feed plate device (not shown). The supplied fibre web then moves to the licker-in 3 of the carding machine. The periphery of the licker-in roller 3 is wrapped with a serrated wire cloth which can remove impurities, such as heavy trash particles and seeds, from the wire mesh. The opened and cleaned fibrous web from the licker-in 3 is then transferred to the main carding zone. At this point, these cleaned fibre webs pass between the main cylinder 4 and the revolving cover 5 of the main carding zone. Carding operations take place between these main cylinders and the revolving deck system. The direction of rotation of the revolving cover and the main drum is indicated by arrows in the figure. The fibers coming out of the carding zone enter the doffer roller 6 in the form of very thin webs or fluff for further cleaning. Then, the fiber web or raised cloth is taken up by the redirecting roller 7 and passed through a pair of laminating rollers 8. Above the redirecting roll 7, a brush roll 10 is provided for cleaning or stripping accumulated/adhered fibers from the surface of said redirecting roll 7. Further, a suction device is provided above the brush roller 10 to remove the fiber wastes deposited on the surface of the brush roller. Further, the fibrous web proceeds to the following carding elements of the web delivery zone 9, the web delivery zone 9 comprising a web compressor, a pair of calender rolls and a wrapping unit. The thin web is compressed into a sliver in a web compressor and passed through a pair of calender rolls followed by a wrapping unit. Finally, the compressed sliver is placed or stored in a sliver can for movement to other subsequent processing machines, such as a drawing frame.
Fig. 2 and 2a show a conventional fibre transfer between a bend roll and a calender roll of a carding machine. After the carding operation, the fibrous web is usually transferred from a main carding zone comprising a main cylinder 4, a revolving flat assembly 5 and doffer rollers 6. The thin web or fluff is then transferred through a redirect roller 7 and a pair of laminating rollers 8. In this operation, the wire or fluff is guided by the redirection roller lower cover or guide plate 11. The brush roller 10 is arranged above the redirecting roller 7. A suction device 16 with suction pipes above the brush roll 10 is used to remove returned waste from the laminating roll stripper and the brush roll 10. Due to the diameter difference between the redirecting roll 7 and the top laminating roll 8a, there is always a certain gap or space 17 between said redirecting roll and the top laminating roll. Therefore, the fibers stuck to the outer surface of the redirecting roll cannot be completely transferred through the pair of the laminating rolls 8a, 8b, and sometimes the fibers stuck to the outer surface of the redirecting roll become scrap 13 (shown by a broken line) and then transferred to the brush roll 10. In addition, these fibers released from the redirecting rolls are conveyed by the brush roll aspirator 16 through the gap or space 17. The solid line 12 in fig. 2a shows the normal fibre transfer between the redirecting roll 7 and the calender roll pair 8a, 8 b.
Due to the above-mentioned gap or space 17 between the redirecting roll 7 and the top calender roll 8a, some of the quality fibers are carried away by the redirecting roll 7 and subsequently transferred to the brush roll aspirator 16. The quality fibre material runs off through said gap or space 17, which affects the fibre transfer efficiency of the redirecting roll.
Figures 3a and 3b of the drawings show a fibre web guide arranged between a bend roll and a top calender roll of a carding machine, according to a preferred embodiment of the utility model. In order to avoid that the fibers return upwards through the gap or space 17 of the redirecting roll 7, a fiber web guiding element 14 is arranged between the redirecting roll 7 and the pair of crushing rolls 8a, 8 b. The wire guide element 14 also supports the wire on the upper side when the machine is running at a higher speed.
The web guide elements 14 have a curved shape on the juxtaposed surfaces of the transfer roll 7 and the juxtaposed surfaces of the top calender roll 8 a. Thus, the web guide elements 14 maintain a uniform or divergent/convergent tighter gap 18 relative to the redirecting roll 7 and the top calender roll 8 a.
According to another embodiment of the utility model, fig. 3c shows that a stationary guide element 15 is provided between the bend roll and the top calender roll of the carding machine. The fixed guide element 15 has a uniform or divergent/convergent tighter gap 18 with respect to the redirecting roll 7 and the top calender roll 8a and is located above the top calender roll 8 a. The bottom edge of the stationary guide element 15 prevents further fibre entry between the redirecting roll and the stationary guide element 15 when the returning fibre material is conveyed upwards by the redirecting roll 7. The fixed guide element 15 thus peels the fibres off the surface of said redirecting roll 7 so that the fibres fall onto the running wire 12 and are forwarded in the actual direction.
The wire guiding element 14 or the fixed guiding element 15 is a metal or metal alloy or a non-metal or composite material, the wire guiding element 14 or the fixed guiding element 15 extending over the entire width of the redirecting roll 7. The two extreme ends of the wire-mesh guide element 14 or the fixed guide element 15 are supported on the machine frame by suitable connecting means or fixtures or can be slid sideways. The wire guiding element 14 or the fixed guiding element 15 can also be easily removed for maintenance or replacement.
Since the return of the high-quality fiber material to the brush roll aspirator 16 is eliminated by using the above-described fiber web guide member 14 or the fixed guide member 15, efficient fiber transfer is achieved by the redirecting roll 7. This also reduces fibre loss and sliver breakage due to wire-mesh stacking and also improves the efficiency of the carding machine.
All changes, modifications and variations that come within the meaning and range of equivalents are to be considered within the scope and spirit of the utility model in view of the disclosure described herein. It should be understood that the above disclosed aspects and embodiments may be used in any combination with each other. Several of this aspect and embodiment may be combined together to form another embodiment of the present disclosure.
Claims (10)
1. A carding machine (a), characterized by comprising:
doffer roller (6) for doffing the fibrous web from the cylinder (4);
a top calender roll (8 a);
a bottom grinding roll (8 b) disposed below the top grinding roll (8 a);
a redirecting roller (7) which redirects the fibers from the doffer roller (6) to the laminating rollers (8 a, 8 b);
a brush roller (10) for peeling accumulated fibers at the surface of the redirecting roller (7); and
at least one guiding element interposed between the redirecting roll (7) and the top calender roll (8 a) to reduce the space (17) between the redirecting roll (7) and the top calender roll (8 a), thereby providing a tighter gap (18) relative to the redirecting roll (7) and the top calender roll (8 a).
2. Carding machine (a) according to claim 1, characterized in that the guide element is placed in a position lying down between the redirecting roll (7) and the top calender roll (8 a).
3. Carding machine (a) according to claim 1, characterized in that said guide element is placed in an upper position between said redirecting roller (7) and said top crushing roller (8 a).
4. A card (a) according to any one of the preceding claims 1 to 3, characterized in that the tighter gap (18) is a uniform gap.
5. A card (a) according to any one of the preceding claims 1 to 3, characterized in that the tighter gap (18) is a converging gap.
6. A card (a) according to any one of the preceding claims 1 to 3, characterized in that the tighter gap (18) is a divergent gap.
7. A guide element for a carding machine (a), characterized in that it comprises:
at least one long edge;
at least one short edge disposed opposite the long edge;
a first arcuate edge disposed adjacent to the long edge and the short edge;
a second arcuate edge opposite the first arcuate edge and disposed adjacent the long edge and the short edge;
the guide element is placed between the redirection roller (7) of the carding machine (a) and the top calender roller (8 a) of the carding machine (a) in such a way that the first arcuate edge is arranged in the vicinity of the redirection roller (7) of the carding machine (a) and the second arcuate edge is arranged in the vicinity of the top calender roller (8 a) of the carding machine (a) to reduce the space (17) between the redirection roller (7) and the top calender roller (8 a), thereby providing a tighter gap (18) relative to the redirection roller (7) and the top calender roller (8 a), at least one edge of the guide element preventing fibers from entering in an upward direction between the redirection roller (7) and the top calender roller (8 a).
8. Guide element for a card (a) according to claim 7, characterized in that the tighter gap (18) is a uniform gap.
9. Guide element for a card (a) according to claim 7, characterized in that the tighter gap (18) is a converging gap.
10. Guide element for a card (a) according to claim 7, characterized in that the tighter gap (18) is a divergent gap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN202241009484 | 2022-02-23 | ||
| IN202241009484 | 2022-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219793228U true CN219793228U (en) | 2023-10-03 |
Family
ID=88183084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320288295.1U Active CN219793228U (en) | 2022-02-23 | 2023-02-22 | Guide element for a carding machine and carding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219793228U (en) |
-
2023
- 2023-02-22 CN CN202320288295.1U patent/CN219793228U/en active Active
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| GR01 | Patent grant | ||
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