DE102006047545A1 - Device for cleaning roller bearings - Google Patents

Abstract

The invention relates to a device for cleaning rolling bearings (2) with a conveyor belt (4) on which the rolling bearings are transported, and at least one spraying device (6) which sprays a cleaning fluid onto the rolling bearing (2). According to the invention, the conveyor belt (4) is designed such that only one bearing ring (11, 12) of the roller bearing is in contact with the conveyor belt (4) during the transport of the roller bearings (2).

Description

The The present invention relates to a device for cleaning of rolling bearings. From the prior art, it is known mounted rolling bearings with petroleum or organic or inorganic washing media too clean to remove impurities. There are devices known in which the rolling bearings go through a cleaning unit on a conveyor belt and, for example with a cleaning fluid be splashed. However, this device does not allow complete cleaning the respective rolling bearing. Due to the remaining residual contamination arises in the further Operation of the rolling bearing a sound and also the wear of the roller bearing can thereby increase become.

Farther are known from the prior art cleaning or washing machines for rolling bearings, where different rolling bearings be cleaned with different suitable tools.

In order to are in these cleaning machines type-bound tools needed, what turn leads to high investment. Partial is also the Cleaning with such machines, such as so-called Bell washing machines, only inadequate.

Of the The present invention is therefore based on the object, a device for cleaning rolling bearings to disposal to ask what a cleaning of assembled rolling bearings allowed with improved cleaning properties. In addition to a Device available which are uncomplicated on different rolling bearing types or for example rolling bearings with different roller bearing diameters is customizable.

Besides should be a cleaning of the rolling bearings in a work process in compliance with certain specifications (eg PF 3.004) become. The cleaning should as well as possible a removal of residual pollution. Usually finds after the Cleaning process a noise test instead, this noise test being the Detection of residual contamination allowed. By the cleaning device according to the invention should be achieved that noises in the noise test be displayed and this noise test with it leads to the result that possible low residual contamination present. These tasks are through a device for washing rolling bearings according to claim 1 and a method according to claim 12 achieved. Advantageous embodiments and further developments are the subject of the dependent claims.

The inventive device for washing rolling bearings has a conveyor on which the bearings are transported. Furthermore, at least one injection device is provided, which a cleaning fluid splashes on the rolling bearing or sprays.

This is according to the invention Conveyor belt designed in such a way that while the transport of rolling bearings on the conveyor belt only a bearing ring of the rolling bearing in contact with the Conveyor belt is.

On This way it is achieved that the other or second bearing ring of the rolling bearing, d. H. either the outer ring of the rolling bearing or the inner ring of the rolling bearing, while the transport of the rolling bearing essentially remains freely rotatable. By spraying the rolling bearing a rotation of the respective free ring is effected and on this way the cleaning process improved.

at a preferred embodiment the conveyor belt is designed so that it only with the outer ring of the rolling bearing in contact. Thus, in this embodiment, the inner ring during the Transport on the conveyor belt rotatable and such rotation Can be used to improve cleaning. It would be too possible, that only the inner ring of the rolling bearing in Contact with the conveyor belt stands and in this way the outer ring is freely rotatable. In particular, being in contact with one another understood that the bearing ring in question on the conveyor belt rests. That's how it is For example, it is conceivable to design a conveyor belt in width such that only the inner ring of the bearing comes to rest on the conveyor belt.

Preferably the conveyor belt has two separate guide belts, where the outer ring of the rolling bearing supported on both guide belts. In In this case, the outer ring supported by the two guide bands and the inner ring is opposite the outer ring while the transport on the conveyor belt rotatable.

at In a particularly advantageous embodiment, the levels the guide bands against each other by a predetermined different from 0 ° Angle inclined. Among the levels of the guide bands is the respective Understood level in which the respective guide bands run. Through this Inclination can be adapted to different bearing diameter be achieved, as a function of from the diameter of the rolling bearing the outer ring each further inward or further out on the respective guide bands will come.

Preferably are the levels of the leader bands opposite one horizontal plane inclined by a predetermined angle and this angle is between 3 ° and 30 °, preferably between 5 ° and 20 °, especially preferably between 7 ° and 15 ° and more preferably in the range of 10 °.

Preferably are the levels of both guide bands around the same angle with respect to the horizontal plane inclined.

at a further preferred embodiment the spraying device has at least one spray nozzle, the oblique across from a longitudinal direction of the rolling bearing is arranged. By this weird Arrangement of the spraying device with respect to the longitudinal axis of the rolling bearing can be achieved that in addition to a splashing of the bearings at the same time a rotation of the bearing inner ring is generated. at A further advantageous embodiment is lateral guide devices provided which the rolling bearing while transport on the conveyor belt. In this way, the individual rolling bearings in terms of be centered on the conveyor belt and thus can be ensured be that all run on the conveyor belt bearings in the same position this are arranged.

These guide devices are preferably adjustable to accommodate this way to make different rolling bearing diameter. Preferably, the spraying device is on at least one guide device arranged. This means that during a movement of the guide device also changes the position of the arranged thereon sprayer. at In a further advantageous embodiment, the guide belts for the cleaning fluid permeable. This is particularly advantageous when touching the guide bands, since in this way the cleaning fluid flow away can. Instead of the guide bands whose Layers would intersect it also possible a leader band with an inwardly curved area provided. Even such a leadership band would be one Adaptation to different rolling bearing diameters enable.

at a further preferred embodiment a gear is provided which the distance of the guide means symmetrical with respect to adjusts the leadership bands. In this way, as mentioned above, a centering of the bearings be reached on the conveyor belt.

Advantageous the guide bands are going through a common drive device driven. In this way is achieved that the two guide bands synchronously be moved to each other.

The The present invention is further directed to a method of cleaning of rolling bearings directed, with the rolling bearings be transported on a conveyor belt and by an injection device with a cleaning fluid be splashed.

According to the invention the rolling bearings so led on the conveyor belt, that during the Transport of rolling bearings only one bearing ring of the rolling bearing in contact with the conveyor belt. This way, how can mentioned above, the relevant second bearing ring are guided freely rotatable.

Preferably while the conveyor belt is standing the transport of rolling bearings only with the outer ring of the rolling bearing in contact. This is also particularly advantageous here, the bearing inner ring while the transport of the rolling bearing freely rotatable.

Advantageous is further by spraying the rolling bearing with a cleaning liquid a Rotation of the inner ring opposite the outer ring of the rolling bearing caused.

Further advantages and embodiments will become apparent from the attached drawing:
It showed 1 a schematic diagram of a device according to the invention.

1 shows a schematic diagram of a device according to the invention 1 for cleaning rolling bearings. The reference number 2 in 1 refers to a rolling bearing to be cleaned. This rolling bearing has an inner ring 11 and an outer ring 12 on. Between these bearing rings are rolling elements 16 or arranged a Wälzkörperkranz.

The rolling bearing 2 will be at the in 1 shown embodiment 2 oblique guide bands 4a . 4b , who together the conveyor belt 4 form, led. These oblique guide bands are also referred to below as prismatically arranged bands.

The two guide bands 4a and 4b are permeable to the cleaning liquid or the washing medium in the embodiment shown.

In this type of leadership is the outer ring 11 the rolling bearing without tilting in the prism or on the two guide belts 4a . 4b on. The rolling element ring 16 and the inner ring 11 lie rotatable or free in the outer ring 12 ,

During the washing process, the rolling bearing by a washing curtain or a Hood 7 guided. During the cleaning process, the inner ring 11 of the rolling bearing and thus also the Wälzkörperkranz 16 set in rotation by spraying devices. More precisely, these spraying devices are spray nozzles 6a . 6b which are arranged obliquely with respect to a longitudinal direction or longitudinal axis L of the rolling bearing. These spray nozzles, not shown in detail 6a . 6b are at the in 1 shown embodiment disposed at an angle of about 60 ° relative to the longitudinal axis L, so that a circumferential force on the Wälzkörperkranz 16 is applied to the rotation of the inner ring 11 to produce against the outer ring.

However, it could also be provided here other inclination angle, such as angles between 20 ° and 90 ° or preferably between 30 ° and 70 °. In this case, the jet direction of the nozzle 6a , which is arranged on the left side, on the one hand, and the jet direction of the nozzle 6b on the right side, on the other hand, directed against each other to obtain an additive effect of the peripheral forces. In other words, the nozzle 6a aligned so that the spray jet emerging from this also a component, for example in the direction of movement of the conveyor belt 4 and the spray nozzle 6b is aligned so that from this emerging spray jet also a component opposite to the transport direction of the conveyor belt 4 having.

It would be, however another type of skew possible, For example, an angle of inclination of the spray nozzles inwardly with respect to Conveyor belt.

Due to the rotation, all inner surfaces of the rolling bearing are also wetted and washed. Finally, the rolling bearing is running 2 again through a washing curtain in which another washing process can take place.

The reference numerals 13 and 14 refer to lateral guide devices that serve to guide the rolling bearing in the wash channel. More precisely, these guide mechanisms effect 13 . 14 that the rolling bearing 2 symmetrical or centric with respect to the two guide bands 4a . 4b to be led. The spraying devices 6a and 6d or the washing nozzles are on the two side guides 13 . 14 attached. The distance of these guide means is set symmetrically via a central gear (not shown). Due to the central and symmetrical adjustment of the guide means, ie by a movement of the guide means in the direction of the arrows P1 and in that the spraying devices are attached to the guide means, the device for cleaning rolling bearings can be quickly adapted to each rolling bearing size in a certain diameter range.

Especially Also, no type-based tools are required to different rolling bearings to clean. Compared to bell washing machines or washing machines with type-based tools, investments are low comparable or better washing result. Thus, a device according to the invention for Cleaning of rolling on a certain outer diameter range the rolling bearings, such as A range of 65-120 mm, a range of 120-280 mm, a range of 280-420 mm, etc. be adapted.

In the embodiment shown here are thus substantially the centrally driven two guide belts, which are arranged at a certain angle to the horizontal plane, preferably these guide belts are permeable to the cleaning liquid. The obliquely arranged washing nozzles cause, as stated above, the rotation of the bearing inner ring relative to the outer ring. The centrally adjustable side guide makes it possible to adapt to different rolling bearing diameters. Bearing with a smaller outer diameter lie further inside, but centric on the guide belts 4a . 4b on.

The reference number 9 refers to a tub in which the entire device is cleaned for cleaning rolling elements. In this tub cleaning liquid can be collected and fed again to the cleaning process.

All Features disclosed in the application documents are considered to be essential to the invention as long as they are individually or in combination with respect to State of the art are new.

1

contraption for cleaning rolling bearings

2

roller bearing

4

conveyor belt

4a, 4b

guide belts

6

spraying device

6a, 6b

spray nozzles

7

Hood

9

tub

11

inner ring

12

outer ring

13 14

lateral guide devices

16

Wälzkörperkranz

L

longitudinal direction of the rolling bearing

P1

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Claims (14)

Device for cleaning rolling bearings ( 2 ) with a conveyor belt ( 4 ), on which the rolling bearings are transported and at least one injection device ( 6 ) which sprays a cleaning liquid onto the rolling bearing, characterized in that the conveyor belt ( 4 ) is designed such that during the transport of the rolling bearing only a bearing ring ( 11 . 12 ) of the rolling bearing in contact with the conveyor belt ( 4 ) stands. Apparatus according to claim 1, characterized in that the conveyor belt is designed such that it only with the outer ring ( 12 ) of the rolling bearing is in contact. Device according to at least one of the preceding claims, characterized in that the conveyor belt ( 4 ) two separate guide bands ( 4a . 4b ), wherein the outer ring ( 12 ) of the rolling bearing on both guide belts ( 4a . 4b ) is supported. Apparatus according to claim 3, characterized in that the levels of the guide bands ( 4a . 4b ) are inclined relative to each other at a predetermined angle different from 0 °. Device according to at least one of the preceding claims 3-4, characterized in that the levels of both guide bands ( 8a . 8b ) are inclined at the same angle with respect to a horizontal plane. Device according to at least one of the preceding claims, characterized in that the spraying device has at least one spray nozzle ( 6a . 6b . 6c ), which are arranged obliquely opposite a longitudinal direction (L) of the rolling bearing. Device according to at least one of the preceding claims, characterized in that lateral guide devices ( 13 . 14 ) are provided, which the rolling bearing during transport on the conveyor belt ( 4 ) to lead. Apparatus according to claim 6, characterized in that the injection device ( 6 ) on at least one guide device ( 13 . 14 ) is arranged. Device according to at least one of the preceding claims 3-7, characterized in that the guide belts ( 4a . 4b ) are permeable to the cleaning liquid. Device according to at least one of the preceding claims 6-8, characterized in that a transmission is provided which the distance of the guide means symmetrically with respect to the guide belts ( 4a . 4b ). Device according to at least one of the preceding claims, characterized in that the guide belts ( 4a . 4b ) are driven by a common drive means. Method for cleaning rolling bearings, the rolling bearings ( 2 ) on a conveyor belt ( 4 ) and by an injection device ( 6 ) are sprayed with a cleaning liquid, characterized in that the rolling bearings ( 2 ) on the conveyor belt ( 4 ) during transport of the rolling bearings ( 2 ) only one bearing ring ( 11 . 12 ) of the rolling bearing ( 2 ) in contact with the conveyor belt ( 4 ) stands. Method according to claim 12, characterized in that the conveyor belt ( 4 ) during transport of the rolling bearing only with the outer ring of the rolling bearing ( 2 ) is in contact. Method according to at least one of the preceding claims 12-13, characterized in that by spraying the rolling bearing ( 2 ) with the cleaning liquid, a rotation of the inner ring ( 11 ) relative to the outer ring ( 12 ) is caused.