JPH07197326A - Rotary drive round brush for cleaning trimming rollers - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a round brush for the textile industry, which has bristles that are supported in contact near the surface to be cleaned and that can follow and adjust in the radial direction. The present invention comprises a rotationally symmetric main body and a bristle holder, the main body having radial guides for bristles on its circumference and side plates present on both end faces and connected to each other, and the bristle holder serving as a bristle rod. Formed, arranged at pitch intervals along the generatrix of the round brush, movably supported radially inside the radial guide to the bristles in the body and adjusted radially by at least two wedge-shaped adjusting elements. It relates to a rotary drive round brush for cleaning positionable trimming rollers, especially in the textile industry. In particular, the wedge-shaped adjusting elements 21, 22 for the bristle rod 3 have wedge surfaces 212, 213 acting inwardly, to which the loading element 25 acting radially outward is attached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a rotationally symmetrical body and a bristle holder, the body having radial guides for the bristles on its circumference and side plates present on both end faces and joined to each other. The bristle holders are formed as bristle bars, arranged at pitch intervals along the generatrix of the round brush, supported radially movable inside the radial guide to the bristles in the body and by at least two wedge-shaped adjusting elements. It relates to a rotary drive round brush for cleaning trimming rollers, especially in the textile industry, which can be adjusted in radial direction.

[0002]

BACKGROUND OF THE INVENTION A round brush of this kind is known from German Patent DE 645 736. The bristle bundle penetrates its jacket in a number of holes corresponding to the so-called outer roller and is attached to the so-called brush bar of the inner roller. The brush bars are movably arranged in the radial direction and are displaced and adjusted in the radial direction by an axially movable wedge that contacts an adjacent brush bar. A round brush constructed in this way has the advantage that the bristles are guided very close to their tips, and the bristles can be adjusted along their own axis to the set diameter of the roller.

This embodiment has the drawback that the maximum adjustment stroke for adjusting the bristle length is limited. Although not mentioned in the patent document, the brush bar must be held in the wedge by elastic means, for example a spring. As a result, during the normal high speed rotation of a round brush, the brush bar lifts out of the wedge due to its centrifugal force, pushing the bristles against the surface to be polished at a point that cannot be precisely defined.

Due to this state of action, the tips of the bristles inevitably bend in the direction opposite to the direction of movement and slide on the surface to be polished, partly at a very sharp angle.

On the one hand, the polishing action is reduced and, on the other hand, the friction between the bristle tips and the surface to be polished is greatly increased. Increased bristling wear.

German Patent Application Publication No. 3802
From 933, a similar device is known for the additional machining of polished surfaces. This device differs from that described above in that the axially displaceable wedges or adjusting elements can be moved along the axis of the rotating brush rather than between adjacent brush bars. A plurality of inclined surfaces are provided for uniform radial adjustment of the bristle rod.

The movable adjusting element still adjusts the bristle bar outwards against the force of the load spring, so that again during high speed rotation of the brush the bristle bar moves outwards against the action of the spring. It has the disadvantage that it is pressed and the bristles bend backwards at the surface to be worked. The cleaning action is at least reduced.

Such bending of the bristles is useful for additional polishing of the polished surface. However, this is not entirely applicable for cleaning trimming rollers, especially in the textile industry.

The problem here is to remove dust and short threads, in which case the action of adhesive substances (eg wax or sweet juice) must be ruled out. The back-tilted bristles press dust and short threads against the roller to be brushed. These adhere to the roller surface under the action of an adhesive substance. For this reason, a layer which impairs the action of the trimming roller or completely blocks it is formed in a short time.

For the above-mentioned reasons, no round brush having a brush rod which can be adjusted in the radial direction according to the above-mentioned patent specification is adopted for the round brush in the textile industry.

Therefore, in the textile industry, it is usual to attach a replaceable bristle holder to the main body in a removable manner in a round brush of this kind. The bristle holder is designed as a half shell for this purpose.

It has a large number of holes for receiving looped bristles. The bristles are fixed in the holes by wedges or by wire.

The normal wear of the bristles is thereby compensated for by the entire round brush being tuned to the roller to be cleaned. This process is done manually at somewhat regular intervals. The amount of follow-up adjustment depends on empirical values or is obtained by visual observation of the surface of the roller to be cleaned.

When the bristles wear, the half-shells are replaced with new or regenerated half-shells and the round brushes are repositioned.

[0015]

This embodiment described above is disadvantageous in many respects. First of all, it is very time consuming and cumbersome to equip a half-shell with a bristle bundle. This still requires considerable manual work. This relates to the removal of worn bristles and the installation of new bristles.

Another drawback is that the newly installed half-shells have very large protruding bristles. The bristles do not exert a sufficient cleaning action, but only when they become considerably worn, do they exert a good cleaning action. As the working capacity increases, the bristles are exposed to high heating in addition to the usual wear for cleaning.

This heating reduces the strength of the bristles, which further shortens the regeneration cycle. In order to rationalize the process of individually adjusting the round brush to the trimming roller, it has been attempted in recent years to follow the round brush as a whole with the electrically driven adjusting means to adjust the surface to be cleaned. There is.

In this case, the fixing of the position of the round brush is released through the magnet control, and the position of the round brush is fixed again by displacing the position of the round brush by the motor used as the adjusting means.

It is therefore possible to avoid frequently repeated manual adjustments. However, this does not solve the problem of different cleaning action of long and short bristles and the time-consuming and cumbersome installation of the bristles on the bristle holder.

It is an object of the present invention to make a round brush which can be employed especially in the textile industry so as to ensure the brushing technique required in the textile industry while taking advantage of the radial adjustability of the bristle rod.

In connection with the solution to this object, on the one hand, a bristle holder is produced which can be manufactured automatically and in which the bristles are arranged such that the bristles always have the same elasticity and are located at the same distance from the surface to be cleaned. That is also a problem.

The holding of the bristle holder in the round brush must be such that the bristle holder can be replaced in a short time when the round brush is regenerated.

[0023]

According to the invention, this object is achieved by means of the characterizing features of claim 1.

The direction of action of the wedge surface of the adjusting means is reversed with respect to the adjusting means for the bristles of the brush considered in the preparation of the present specification, so that the tips of the bristles do not rub strongly against the surface to be cleaned. Will be adjusted to. This just scrapes the dust and lint that collect there. The formation of harmful layers is avoided. Bristle wear is significantly reduced. The tracking adjustment process can be performed at long time intervals.

A positive radial guidance of the bristle rod and at the same time a precise displacement adjustment in its radial direction are achieved by the measures according to claim 2.

An embodiment of the radial guide and adjusting means according to claim 3 forms the basic precondition for the problem-free regeneration of the round brush.

The features of claims 4 and 5 define the prerequisites for the function-dependent automatic adjustment of the bristle rod.

The embodiment of the load element for the bristle rod according to claims 6 and 7 ensures a vibration-free and stable positioning of the bristle in front of the surface to be cleaned over the entire length of the bristle rod.

Forming the bristle holder as a radially guided and adjustable bristle rod in the body of the round brush is
It provides the precondition that the bristles are always placed in front of the surface to be cleaned under the same conditions in the stable state of the round brush axis. The bristle rods can be replaced quickly and easily by simple means.

The embodiment of the round brush according to claim 2 further ensures that, on the one hand, the side plates of the body are joined to one another in a sufficiently stable manner and, on the other hand, the bristles are always at the same distance in front of the surface to be cleaned. Guaranteed.

The cleaning action of the bristles is almost constant during the entire use of the bristle rod.

The embodiment according to claim 9 allows easy replacement of the bristle rod.

The embodiment of the guide rod according to claim 10 makes it possible to install the bristle rod while ensuring a high stability of the body. The bristles can be contacted and supported at a short distance from the surface to be cleaned.

The use of hollow profiles as holders for bristle rods according to claim 11 makes it possible to manufacture bristle rods from an endless material in an automated manufacturing process.

[0035]

The present invention will be described in detail with reference to the embodiments shown in the drawings.

A round brush used for cleaning a round comb in a carding machine will be illustrated and described. The cleaning of the circular comb is actually done during each revolution. In its working position, the round brush is supported parallel to the round comb. The axial distance between the circular comb and the circular brush is once adjusted, and then always kept at the same size. The tips of the bristles directed forward in the direction of movement require that the peripheral speed of the round brush be greater than the peripheral speed of the circular comb when trying to achieve regular cleaning.

The round brush has a body 1 which is composed of two side plates 11, 12 and a connecting element between these side plates 11, 12. In the case of this embodiment, the guide rod 13 on the circumference of the round brush acts as a connecting element.

The guide rod 13 is firmly fixed to and supported by the side plate 11 on the driving side. The guide rod 13 is inserted into the corresponding recess and is welded or affixed therein.
On the opposite side plate 12, the guide bar 13 is likewise inserted into a tight recess, but is removably retained therein. For example, the so-called tightening belt 14 bears this problem.

The adjusting means 2 for the bristle rod 3 is present in the area of these side plates. The adjusting elements 21, 22 of this adjusting means (2) have an inner contour 21 on which the radial guides 211, 221 for the projections 30 of the bristle rod 3 are machined.
2, 222 are provided. These adjusting elements 21, 22
Each have a female thread with a pitch opposite to that of the threads of the adjusting elements 22, 21 on the opposite side.

The adjusting elements 21, 22 are connected to the main body 1 via detents 15, 16 in the direction of rotation,
It can move axially with respect to the body (1).

The adjusting tube 23 for guiding the adjusting elements 21 and 22 inside is provided with adjusting elements 2 attached to both ends thereof.
Fine screws for 1, 22 are provided.

During the rotational movement of the adjusting tube 23, the adjusting element 2
The displacements of the first and the second parts are adjusted so as to be separated from or approach each other.

At the drive end of the adjusting tube 23 there is a drive wheel 24 which is rigidly connected to it. The pinion 26 supported by the side plate 11 transmits the adjustment movement coming from the outside to the drive wheel 24 and the adjustment tube 23.

In the case of this embodiment, a small motor 28 is used as a driving means for the above-mentioned pinion 26, and this small motor 28 has its support on the end wall of the side plate 11. The small motor 28 receives its energy and / or control commands from the central control unit via sliding contacts.

The motor 28 and the drive wheel 24 are provided for the purpose of ensuring the adjusted positions of the adjusting elements 21 and 22 without hindrance.
The transmission between and must be made self-locking. In this embodiment, the motor 28 directly drives the worm of the worm gear unit 27. The bristle bars 3 are fitted in the radial guides 211, 222 of the adjusting elements 21, 22 by the projections 30 thereof on the circumference of the round brush at equal intervals.

The bristle rod 3 is always held by the load element 25 against the guide surface at the inner contour 212, 222 of the adjusting element 21, 22.

The load element 25 is an annular hollow body 2 made of rubber in particular.
51, which is supplied with compressed air via a valve not shown. This annular hollow body 251,251 '
Has the effect that the bristle rod 3 is uniformly pressed over its entire length (about 40 cm) against the surface to be cleaned, irrespective of its degree of wear.

Instead of the only annular hollow body 251, it is also possible to employ a plurality of such hollow bodies in the form of small-width annular hoses 252. In this case, care must be taken to choose their mutual lateral spacing so that these annular hoses do not interfere with each other.

The hollow chambers of these hoses 252 must be connected to each other via flexible connecting pipes so that the same pressure is generated in all the hoses.

The bristle rod 3 has the purpose of accurately positioning the bristles 34 and stably fixing their position with respect to the surface to be cleaned.

These objects are achieved by the use of hollow profiles 31, 33 which are U-shaped in cross section.

The bristles 34 are provided between the legs of the U-shaped members 31, 32 in the form of a sling under the action of the wire 32, and the bristles 34 of the U-shaped members 31, 33 under the action of external pressure. It is pressed against the legs. The position of the wire 32 inside the U-shaped members 31 and 33 is a line groove portion 311 which is partially coined.
Is maintained by.

FIG. 4 shows an embodiment in which the U-shaped member 31 has a uniform wall thickness. However, this configuration has the disadvantage that, on the one hand, the radial load carrying capacity for the round brush is limited and, on the other hand, a very large bristle length has to be inserted into the U-section 31.

These defects are caused by the U-shaped member 33 in FIG.
Not in. The U-shaped material of this bristle rod 3 is stable due to the large material cross-sectional area.

The space for fixing the bristle sling 34 is minimized.

Next, the main points of the operation of this round brush will be explained once again. In the case of the basic assembly of a round brush, a bristle bar 3 with large normal length bristles 34 is installed.
The hollow body 251 or 252 releases pressure and is made thin. By manually adjusting the adjusting elements 21, 22, the tip position of the bristles 34 is adjusted so that it is located on the guide bar 13 at the desired distance.

The pressure in the hollow bodies 251, 252 is then increased by manual valve control in a short process so that the tips of the bristles 34 reach the surface to be cleaned and slide over it under slight pressure. . During this process, the carding machine is ready for operation. The combing machine control program initiates follow-up adjustment of the bristles 34 by the motor 28 in relation to a predetermined time interval or in response to an appropriate sensor. Electric control means for the valves of the hollow bodies 251, 252 are also associated with such control,
This regulates a correspondingly adapted pressure according to the predetermined maximum diameter of the hollow bodies 251, 252.

In this way, the combing machine can be continuously operated until the bristles 34 of the bristle rod 3 are worn to a predetermined minimum size.

With the machine at rest, the round brush of the carding machine is removed and installed at another work site for the purpose of reconditioning. The tightening belt 14 is released. The side plate 12 is removed. The pressure in the hollow bodies 251, 252 is reduced. The part of the adjusting element 22 having the inner contour 222 is removed from the threaded hub part. The bristle rod 3 can now be removed axially and replaced with one with a larger bristle length.

In this case, the semicircular cross-section of the guide rods 13 facilitates the insertion of the bristles 34 into the space between the guide rods 13.

After the replacement of the bristle rod 3 is completed, the adjusting element 2 is
2 is refilled, the side plate 12 is reapplied and the tightening belt 14 is attached. As a result, the operation preparation is completed again as described above.

[0062]

According to the invention, a round brush can be obtained, which can be used especially in the textile industry, so as to ensure the brushing technique required in the textile industry while taking advantage of the radial adjustability of the bristle rod.

[Brief description of drawings]

1 is a longitudinal sectional view of a round brush according to the present invention.

FIG. 2 is a partial cross-sectional view of the area of a bristle bar of a round brush when the bristles are worn.

FIG. 3 is a view corresponding to FIG. 2 with a new bristle bar attached.

FIG. 4 is a cross-sectional view of an embodiment of a bristle rod.

FIG. 5 is a cross-sectional view of different embodiments of bristle bars.

FIG. 6 is a sectional view of the guide and adjusting means with drive elements for the bristle rod.

[Explanation of symbols]

 1 Main body 11 Side plate (driving side) 12 Side plate 13 Guide rod 14 Tightening belt 15 Anti-rotation 16 Anti-rotation 2 Adjusting means 21 Adjusting element 211 Radial guide 212 Inner contour 22 Adjusting element 221 Radial guide 222 Inner contour 23 Adjusting tube 231 Screw (left) Screw) 232 screw (right screw) 24 drive wheel 25 load element 251 hollow body 251 'hollow body 252 annular hose 26 pinion 27 worm gear device 28 motor 3 bristle rod 30 protrusion 31 U-shaped member 311 groove portion 32 wire 33 U-shaped member (Thick) 34 Bristle 34 'Bristle 341 Sling 342 Sling

Claims (11)

[Claims] 1. A body comprising a rotationally symmetrical body and a bristle holder, said body having radial guides for bristles on its circumference and side plates present on both end faces and connected to each other, said bristle holder serving as a bristle rod. Formed, arranged at pitch intervals along the generatrix of the round brush, movably supported radially inside the radial guide to the bristles in the body and adjusted radially by at least two wedge-shaped adjusting elements. A rotary drive type round brush for cleaning a trimming roller that can be positioned, a wedge-shaped adjusting element (21, 22) for a bristle rod (3)
Wedge surface (212, 213) in which is acting inward
A rotary drive round brush for cleaning a trimming roller, characterized in that the bristle rod (3) is provided with a load element (25) acting radially outwardly. 2. The bristle rod (3) has projections (30) at both ends, and these projections (30) are radial guides (211, 22).
Round brush according to claim 1, characterized in that it engages with (1) and cooperates with adjusting means (2) for adjusting the bristles (3) in the radial direction. 3. The adjustment elements (21, 22) with inner contours (212, 222) are attached to the projections (30) of the bristle rod (3) in the area of the side plates (11, 12) on both sides, the two side plates. At least one of the (11, 12) is axially movable and a loading element (25) acting radially outward on the bristle rod (3) is attached between both adjusting elements (21, 22). The round brush according to claim 1 or 2. 4. Adjustment elements (21, 22) are connected to the main body (1) such that they cannot rotate relative to each other and are movable in the axial direction, and both adjustment elements (21, 22) are screws (231, 23) in opposite directions.
2) is axially displaceable on a rotatable adjustment tube (23) and drives the adjustment tube (23) (26, 27, 2).
Round brush according to any one of the preceding claims, characterized in that a self-locking transmission element (27) is attached to 8). 5. A drive device (26, 26) for the adjusting tube (23).
27, 28) with an electrically controlled adjusting means (28) attached thereto.
Round brush described in paragraph. 6. The loading element (25) for the bristle rod (3) comprises at least one annular elastic hollow body (251, 252) which can be connected via a valve to a source of compressed air. The round brush according to any one of 1 to 5. 7. A plurality of hoses (252) in which the load elements (25) for the bristle rods (3) are spaced from one another.
7. Hose according to claim 1, characterized in that these hoses (252) are connected to each other via flexible hoses, to which at least one valve is attached. Round brush. 8. A plurality of guide bars (13) around the circumference of the body (1).
The guide rods (13) are located between the bristles (34) of the bristle rods (13) adjacent to each other and have supports on both side plates (11, 12) of the body (1). The round brush according to any one of claims 1 to 7, characterized in that. 9. A guide rod (13) is non-detachably connected to a side plate (11) directly connected to a drive unit, and the other side plate (12).
The round brush according to claim 1 or 2, which is detachably attached to the round brush. 10. Round according to claim 1, characterized in that the guide rod (13) has a semicircular cross-section, which is oriented towards the inside of the round brush. brush. 11. The bristle bar (3) comprises a hollow profile (31; 33) open on one side, in which the bristles (34) are wound on a wire (32) perpendicular to the longitudinal axis. Inserted,
11. The hollow profile (31; 33) is fixed by deformation processing, according to any one of claims 1 to 10.
Round brush described in paragraph.