JPH04228624A - Apparatus for guiding textile materials - Google Patents

Abstract

PURPOSE: To increase the life for use of a rubber roller by arranging a grinding cleaning device 30 so as to make contact with a jacket 22 of the rubber roller for reducing the wear of the jacket surface. CONSTITUTION: This device for guiding a fibrous material such as a lap, sliver and cotton having a shape of a coarse thread and positioned at the roller equipped with a jacket 22 made from a rubber or a plastic material resembling the rubber for at least a short period of time, is provided by bringing a grinding cleaning device 30 in contact with the jacket 22 at a grinding cleaning surface 31. The surface 31 is a part of a grinding cleaning flap 32 centered on a shaft 33, and the flap 32 inclines towards the jacket 22 in a direction of the rotation of the roller.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention comprises a jacket made of rubber or a plastic material similar to rubber, in which a fibrous material such as cotton in the form of a wrap, sliver or roving is used for at least a short period of time. It relates to a device for guiding fiber material, placed on rollers, into a spinning device, in particular a drafting device.

0002

BACKGROUND OF THE INVENTION In various machines in textile mills, cotton is guided as wraps, slivers, bundles or threads. In this case, the cotton is guided over rollers, which often have a rubber jacket. More particularly, this guidance is carried out by drafting devices, which are used in combers, roving frames and ring spinning frames. In these drafting devices, rollers covered by a rubber jacket and spaced from one another run in conjunction with opposed cylinders, often driven and suitably shaped, for example made of steel.

The material to be spun is guided between rubber rollers and steel rollers, the following pair of cylinders running at different speeds. In this way, the fiber material is stretched between the individual roller pairs, the gripping distance between the roller pairs being greater than the fiber length of the fiber material. The different materials are then guided together and combined downstream of the drafting device. For example, fiber material for spinning machines is supplied as rovings and drafted in a drafting device. The individual fibers are oriented in the longitudinal direction and run approximately parallel to each other at the outlet downstream of the drafting device. The drafted fibers are delivered to a spinning ring.

[0004] For modern textile mill machinery, the problem lies in the rotational speed of the rolls, which is constantly increasing with further developments. For example, the delivery speed of a draft device of a spinning machine is 1000 m/min, and the delivery speed of a comb is 300 m/min. In the comber preparation machine, the speed is 100m/min to 150m/min.
It falls in the range of min. On the other hand, the delivery speed in the roving frame is approximately 40 m/min. Finally, the speed for ring spinning machines is approximately 25 m/min.

[0005]

The use of rubber jackets directly on cylinders generates static electricity and deposits a viscous layer of, for example, honeydew or wax on the surface. Also, residues of chemicals that are controlled in cotton plantations as being harmful may appear on the surface of the rubber rollers. It will be appreciated that such deposits cause non-uniformities on the roller jacket surface. Furthermore, as the fiber material passes through the jacket, wear and tear on the jacket surface progresses. This wear can be alleviated by using a movable thread guide to laterally shift the threads and the corresponding transverse displacement of the fiber bundle. This is generally inadequate, as the rubber must be polished at regular intervals, otherwise the fibrous material will become tangled and wound without joining at some points. Become. For example, the rubber roller of a ring spinning machine lasts from 12,000 hours to 24,000 hours.
It has a lifespan of 00 hours and 10 polishing operations are performed during this period. Approximately 0.2-0.3m for each polishing operation
m rubber is removed. The lifespan of the rubber rollers in the ultra-high-speed draft device of a drawing machine is only 1,500 hours to 2 hours.
, 500 hours, and the polishing period is from 150 hours to 250 hours.
It's time. The rubber roller of the draft device of the combing machine is 1
It has a lifespan of 5,000 to 20,000 hours and a polishing cycle of 1,500 to 2,000 hours. The rubber rollers in the comber preparation machine have approximately the same lifespan as the comber machine. 15,000 hours to 25 hours on the roving machine
It has a lifespan of ,000 hours. It will be readily understood that this polishing operation is very expensive considering the large number of rubber rollers used.

It is an object of the present invention to provide an apparatus that can avoid periodic polishing due to wear of the rubber cylinder.

[0007]

SUMMARY OF THE INVENTION The objects of the invention are achieved by applying an abrasive cleaning device to the jacket. The abrasive cleaning device can be placed in contact with the jacket of the rubber roller either continuously or at any time or periodically. Individual abrasive cleaning devices themselves must be provided on all rubber rollers that come into contact with the textile material. In particular, at least the rubber roller at the outlet of the drafting device must be provided. By using this abrasive cleaning device, the rubber roller is prevented from becoming slippery and its gripping ability is increased. Since the rubber roller is used until its rubber jacket is reduced to a predetermined specified thickness, repeated polishing operations are completely wasteful. After the rubber jacket is reduced to a specified thickness, the rubber roller is removed and replaced with a new rubber roller. Of course, it is also possible to install new rubber on worn rubber rollers.

[0008] In a preferred embodiment, the abrasive cleaning device has an abrasive cleaning surface placed against the jacket of the rubber roller, and this arrangement avoids excessive wear of the jacket and ensures that the surface of the jacket is uniformly abraded. state. This embodiment has proven to be superior to, for example, the case with scraped edges or the like. However, scraping edges or scraping brushes guided along the jacket surface are also to be included within the scope of the invention. On the other hand, not only mechanical abrasive cleaning devices, but also optical means, such as a laser beam guided precisely along the surface of the jacket, should also be included as cleaning means. However, the proposed mechanical abrasive cleaning device has considerable cost advantages.

[0009] The polished clean surface can be provided with a suitable contour, surface properties (for example with diamond sand) or a thermal coating, in the latter case the coating can be carried out by plasma spraying, for example with aluminum oxide. , corbit (e.g. chromium carbide with nickel chromium adhesive) mixed with metal adhesives of oxides or cermet grade materials such as titanium oxide, chromium oxide, zirconium oxide, or cobalt as metal adhesive. A tungsten corbit can be used. Metals applied by thermal lamination processes are polished, brushed, or sometimes used untreated.

However, the coating of the abrasive clean surface can be carried out, for example, with Velero, a fleece-like woolen material, material for abrasive discs, and the like. For example, diamond sand particles may be included in the fleece-like woolen material. In all cases, appropriate materials must be chosen so that the rubber surface is carefully polished, leaving a uniform, flat surface, minimizing grease and increasing gripping ability. Additionally, the polished clean surface may be coated with a tough compound. The coated surface of this hard compound has a shallow roughness, ie, shallow cracks, similar to a conventional abrasive wheel.

In a preferred embodiment, the abrasive cleaning surface is the underside of the abrasive cleaning flap, which underside has a flat, rectangular shape or is slightly curved to accommodate the surface of the rubber roller. Good too. This abrasive cleaning flap needs to be connected to the shaft,
The flap can be placed on the surface of the rubber roller by pivoting around the axis. In this example,
The contact surface is arranged to face the direction of rotation of the rubber roller. This means that the abrasive clean surface extends from the shaft in the direction of rotation of the rubber roller, covers part of the outer circumference of the rubber roller, and is placed on the surface of the rubber roller. One shaft is arranged parallel to the rubber roller so as to run parallel to the surface of the jacket at a predetermined distance from the surface of the jacket.

In this embodiment, the abrasive cleaning flap rests under its own weight on the jacket of the rubber roller. As long as the abrasive clean surface has a specific shape, specific outer properties or coating, dead weight alone may be sufficient. However, if its own weight is insufficient, a device is required to increase the contact pressure of the abrasive cleaning device. the result,
Friction is increased to facilitate abrasion of the rubber jacket.

[0013] The friction cleaning device is either fixed towards the shaft around which the rubber roller rotates, or fixed at another location, such as a support arm. However, in all cases the relationship with the rubber roller must be maintained to ensure uniform contact with the abrasive clean surface.

For these reasons, it is more preferable to fix the rubber roller on the shaft. A holding block is provided for fixing the abrasive cleaning device, which is fixed on the shaft with suitable gripping means. At this time, the aforementioned shaft is passed through the holding block, and this shaft holds the abrasive cleaning flap. As a result, a predetermined relationship between the polishing cleaning device and the rubber roller is reliably maintained.

In order to arrange a device for instantaneously increasing the contact pressure in the polishing cleaning device, a lever is formed on the other end of the holding block when viewed from the shaft, and as a device for increasing the contact pressure, the lever and the shaft are connected. A helical spring or similar energy source is placed between them. In this case, the strength of the contact pressure can be adjusted by varying the strength of the helical spring. This device is extremely simple and is therefore the preferred embodiment. However, other devices for increasing the contact pressure are conceivable within the scope of the invention.

Furthermore, holding blocks may be provided on both sides of the rubber roller. A shaft is provided between the holding blocks, on which the abrasive cleaning flap is secured. the result,
Since there is no risk of the freely suspended shaft turning over, the support of the shaft to which the abrasive cleaning flap is fixed is improved. In this embodiment, devices can be arranged to increase the contact pressure.

Other configurations of the polishing and cleaning apparatus of the present invention are shown in detail in the accompanying drawings.

Periodic polishing of the rubber cylinder is wasteful, and the considerable cost factor associated therewith is eliminated by the device according to the invention.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Further advantages, features and details of the invention will be explained in more detail below with reference to preferred embodiments illustrated in the accompanying drawings, in which: FIG.

The draft device R used in several known machines in a spinning factory is a ring spinning machine (not shown).
In this case, it has benduram arm 1. The right end of the pendulum art 1 is connected to a part of the machine via a swivel joint, and can be lifted in the direction of arrow X by this swivel joint. The pendulum arm 1 is fixed in the position of use on the spinning machine by means of a clamp lever 2.

In the spinning machine that is the object of this embodiment, only the base 3 of the draft device is shown, and the swivel joint is fixed to the right side of the base 3 at a position with a predetermined spacing. A bearing pedestal 4, 5, 6 is arranged on this base 3, on which a suitably constructed bottom roller 7, 8, 9 rotates. The detailed structure of the bearing arrangement of the bottom rollers 7, 8, 9 is not shown since it is a structure well known to those skilled in the art. The bottom rollers 7, 8, 9 are generally made of metal, more specifically of hard steel;
, 9 are made so that their outer surfaces are within a predetermined space. Although not shown in the drawing for clarity, the bottom rollers 7, 8, and 9 are rotationally driven.

Suitable top rollers 10, 11, 12 are assembled on the pendulum corresponding to the bottom rollers 7, 8, 9. That is, suitable holding plates 13, 14, 15
is held on benduram arm 1 by. This holding is performed by moving the holding plates 13, 14, 15 to the top roller 10.
, 11, 12 are formed coaxially and at least partially surrounding the top rollers 10, 11.
, 12. The shaft 18
The central portion 19 of the shaft 18 is shown in perspective view in FIG.
A holding plate 15 is used to hold and support the top roller in the central part 19 of the top roller. Said central part 19, ie the holding area 19, is made flat, thereby making it possible to ensure the correct positioning of the shaft 18 in the holding plates 13, 14, 15. As a result, the relative positioning of the abrasive cleaning device described below with respect to the individual top and bottom rollers is predetermined. In FIG. 2, the top rollers 12a, 12b are shown in the holding area 19.
The condition is indicated by being placed on the axis 18 on either side of the . The shafts 16, 17, 18 can be immediately removed from the holding plates 13, 14, 15.

All the top rollers 10, 11, 12 have ball bearings 20 (shown in perspective in FIG. 2) on which the top rollers 10, 11, 12 rotate on the shaft 18. make it possible. Each top roller 10, 11, 12 consists of a roller body 21 made of, for example, synthetic resin or metal, and a jacket 22 made of natural rubber or rubber-like synthetic resin that covers the roller body 21. This jacket 22 cooperates with the bottom rollers 7, 8, 9 in transporting the fiber bundle or sliver (not shown). A suitable fiber bundle, for example from a sliver can, is fed to the sliver guide 23 of a ring spinning frame, and then the fiber bundle is transferred between the bottom roller 7 and the top roller 10, the bottom roller 8 and the top roller 11.
, and through appropriate gaps between bottom roller 9 and top roller 12, respectively. The fiber bundle then leaves the drafting device R and is taken out by a spindle or similar member, whereby the fiber bundle advances to the discharge side of the bottom roller 9 and the top roller 12, thus producing a yarn. Become.

Note that the sliver guide 2 in this embodiment
3 is slidably arranged on the bearing stand 4 for the bottom roller 7, so that the fiber bundle is transferred to the top rollers 10, 11,
12 over a large part of the width b. The surfaces of the jackets for the bottom rollers 7, 8, 9 are provided with a shape and external properties that ensure gripping of the fibers.

In this embodiment, the bottom roller 8 and the top roller 11 are provided with an additional guide belt, ie an apron, for the fiber bundle, and the bottom apron 24 and the top apron 25 are connected to the corresponding bottom roller 8.
Or it partially goes around the top roller 11. Rollers or similar members (not shown in detail) fixed to the ends beyond the spacers 26, 27 ensure that the bottom apron 24 and the top apron 25 are placed in close proximity to each other and provide the desired tension. ensure that
This improves the guidance of the fiber bundle.

According to the invention, a polishing cleaning device 30 is associated with each top roller 10, 11, 12,
This abrasive cleaning device 30 has as its essential component a surface 3 which is to be placed on the rubber jacket 21 of the roller.
1. As shown in FIGS. 2 and 3, it is the technical concept of the present invention that a large surface of the rubber jacket is surrounded by the surface 31, but pressing in a narrow range, that is, linear contact pressure is also within the scope of the present invention. It is within. With each revolution of the top roller 10, 11, 12 rotating in the direction of arrow Z by means of the abrasive clean surface 31, a slight wear of the jacket 22 takes place. In addition, it should be noted that the cleaning action that occurs due to the smoothing of the inherent planar irregularity of the polishing cleaning surface 31 is caused only by the own weight of the polishing cleaning flap 32. During long operating times at high speeds, the top rollers 10, 11, 12 and the cleaning flap 32
may cooperate, but this cooperation may lead only to wear of the jacket 22. However, it is also within the scope of the present invention to recoat the abrasive clean surface 31 of the abrasive clean flap 32, thereby imparting a predetermined shape and surface performance to the abrasive clean surface 31. For example, a plasma coating with a certain degree of roughness or a Velero, a woolen belt with a fleece-like surface, can also be provided on the abrasive cleaning surface 31, which acts on the surface of the jacket 22.

It is important that the abrasive cleaning surface 31 of the abrasive cleaning flap 32 is located over the entire width b of the jacket 22. Uniform wear of the jacket 22 is achieved only in this way. In addition, the shaft 33 passing through the holding block 34 according to the invention also serves this purpose. This retaining block 34 is fitted onto the shafts 16, 17, 18, and has suitable slots 35 in order to be able to slide on the shafts 16, 17, 18. This slot 35 is moved into the working position by loosening the threaded bolt, and then the retaining block 34 is gripped onto the shafts 16, 17, 18 by tightening the threaded bolt. By rotating the retaining block 34, the abrasive cleaning flap 32 can be adjusted to the appropriate position.

In one embodiment of the invention, on the other side of the holding block 34, the shaft 33 has a lever 37 which is coupled to the shaft 18 via a helical spring 38. The contact pressure of the abrasive cleaning flap 32 on the jacket 22 of the top roller 12 can be increased by this spring 38. Obviously other types of means can be used to increase the contact pressure. The means for increasing the contact pressure according to the invention should therefore basically be designated by the reference numeral 39.

In another embodiment of the invention shown in FIG.
Holding blocks 34a and 34b are arranged on both sides of top roller 12a and top roller 12b, respectively. In this case, the first holding block 34a is fixed to a shaft 18a, which in the embodiment according to FIG. 2 is designated by shaft 18. However, the shaft 18a passes through the second holding block 34b, and its shaft head 40 is on the opposite side when viewed from the top roller 12b. In this way, like the first retaining block 34a, the second retaining block 34b is retained on the shaft head 40 by means of suitable threaded bolts.

Furthermore, in this embodiment, the continuous shaft 42 for holding the polishing cleaning flap 32 is held by both the holding blocks 34a and 34b, which are disposed between the first holding block 34a and the second holding block 34b. The advantage of having a continuous axis is that it improves the adjustment method and ensures adjustment over the entire width of the abrasive cleaning flap.

The arrangement of the retaining block 35 on the top roller 12 is clearly shown in FIG. As shown in FIG. 4, the polishing cleaning flap 32 does not have a tip that causes a scraping phenomenon on the upstream side when viewed in the rotational direction Z. In this embodiment, the top roller 12 is combined with a cleaning roller 43 whose outer peripheral surface is covered with fleece-like woolen material. This cleaning roller 43 also serves to clean the rubber jacket 22.

In another embodiment of the abrasive cleaning device 30b partially shown in FIG. 1, the abrasive cleaning flap 32 used is held directly on the pendulum arm 1; Flap 32 has an axis 44 . Various elements are provided (details not shown) for applying contact pressure of the abrasive cleaning flap 32 to the top roller.

FIG. 5 shows still another embodiment of the present invention. In this embodiment, the abrasive cleaning device 30c is provided with a pressing member 45 having an abrasive cleaning surface 31 mated to the surface of the top roller 12. The pressing force can be applied via an intermediate member 46, for example by using a helical spring 47 on the pressing member 45.

In yet another embodiment shown in FIG. 6, an abrasive cleaning device 30d comprises a flexible belt 48 coated with a plurality of abrasive particles 49. The flexible belt 48 can run while following changes in the outer peripheral surface of the top roller 12. Furthermore, the contact pressure can be increased by applying appropriate tension to at least one end of the belt.

Instead of arranging the abrasive and cleaning devices 30 at all spinning positions, these devices 30 can be placed on a traveling service stand that moves along the spinning machine. Such a device can be used, for example, when a yarn breaks between the drafting device and the tube yarn and has to be spliced.

In another embodiment, the bottom roller itself is provided with an abrasive cleaning device having a special roughened surface that provides an abrasive effect on the top roller. Furthermore, it is advantageous if the abrasive cleaning device is equipped with a suction device which prevents abrasive dust and particles of the abrasive material itself from entering the spinning zone from the bottom roller.

[Brief explanation of the drawing]

FIG. 1 is a partial front view of a draft device equipped with an abrasive cleaning device of the present invention.

FIG. 2 is a perspective view showing an example of the polishing cleaning device of the present invention together with a draft device.

FIG. 3 is a perspective view showing another example of the polishing cleaning device of the present invention together with a draft device.

FIG. 4 is a schematic side view showing the relationship between still another example of the polishing cleaning device of the present invention and a draft device.

FIG. 5 is a schematic side view showing another embodiment of the polishing cleaning device of the present invention in relation to a draft device.

FIG. 6 is a schematic side view showing still another embodiment of the polishing cleaning device of the present invention in relation to a draft device.

[Explanation of symbols]

7, 8, 9... Bottom roller 10, 11, 12... Top roller 18... Shaft 22... Jacket 30, 30a, 30b, 30c... Polishing cleaning device 31... Polishing cleaning surface 32... Polishing cleaning flap 33, 42, 44... Shafts 34, 34a, 34b...holding block 37...lever 38...helical spring 45...pressing member

Claims (17)

[Claims] 1. A fiber material, such as cotton, in the form of a wrap, sliver or roving, which is placed for at least a short period of time on a roller equipped with a jacket made of rubber or a plastic material similar to rubber. Device for guiding material to a spinning device, in particular a drafting device, characterized in that an abrasive cleaning device (30) is applied to the jacket (22). [Claim 2] The polishing cleaning device (30) has a jacket (
2. Device according to claim 1, characterized in that it has an abrasive clean surface (31) placed against the abrasive surface (22). 3. Device according to claim 2, characterized in that the abrasive cleaning device (30) has an abrasive cleaning surface (31) of suitable shape and external properties or that is thermally coated. 4. An abrasive cleaning layer comprising, for example, a fleece-like woolen material, namely Berero, is applied to the abrasive cleaning surface (31).
3. Device according to claim 2, characterized in that as given above. 5. The polished clean surface (31) is attached to the shaft (33, 4).
2, 44), and the surface (31) extends from the shaft to the roller (1).
5. The abrasive cleaning flap (32) according to claim 2, characterized in that it is part of an abrasive cleaning flap (32) extending over a part of the outer circumference of the roller in the direction of rotation of the roller (0, 11, 12). Device. [Claim 6] The shaft (33, 42, 44) is connected to the roller (1
6. Device according to claim 5, characterized in that the device is arranged parallel to the angles 0, 11, 12). 7. Device according to claim 1, characterized in that a device (39) for increasing the contact pressure on the jacket (22) is associated with the abrasive cleaning device (30). . 8. The abrasive cleaning device (30) comprises a shaft (16, 17, 17,
18) Claims 1 to 7 characterized in that it is fixed on the
The device according to any one of . 9. An abrasive cleaning device (30) is fixed to the shaft (18) by a holding block (34), the holding block (34)
4) has a shaft (3) that holds the abrasive cleaning flap (32).
9. Device according to claim 8, characterized in that 3) is penetrating. 10. On the other end of the holding block (34) the shaft (33) is formed as a lever (37), the lever (37)
A helical spring (38) is placed between the shaft (18) and the shaft (37).
10. Device according to claim 9, characterized in that an energy storage means, or a spring-like energy storage means, is arranged as the device (39) for increasing the contact pressure. 11. Holding blocks (34a, 34b) are provided on both sides of the roller, and holding blocks (34a, 34b) are provided on both sides of the roller.
11. Device according to any one of claims 1 to 10, characterized in that between b) a shaft (42) is arranged, on which an abrasive cleaning flap (32) is fixed. 12. The polishing cleaning device (30b) has a roller (
8. Device according to any one of claims 1 to 7, characterized in that it is fixed on a support arm (1) holding a holder (10, 11, 12). 13. The polishing cleaning device (30c) comprises a pressing member (45), and the polishing cleaning surface (
8. Device according to claim 1, characterized in that the rollers (31) are adapted to fit the surface of the rollers (10, 11, 12). 14. Device according to claim 13, characterized in that the pressing member (45) acts as an energy storage means (47). 15. An abrasive cleaning device (30d) coated with a plurality of abrasive particles (49) and mounted on rollers (10, 1).
Claims 1 to 7 characterized in that it is a flexible belt (48) that is hung over a part of the surface of the
The device according to any one of . 16. Device for cleaning or polishing the top roller of a drafting device of a textile machine, characterized in that the polishing and cleaning device (30c) is part of a traveling service platform that moves along the textile machine. 17. Claims 1 to 1, further comprising a draft device and a polishing cleaning device for a top roller of the draft device.
6. The spinning machine or doubling machine according to any one of Item 6.