EP3165286B1 - Method and device for de-oiling and/or cleaning mass-produced parts - Google Patents

Description

The invention relates to a method for deoiling and / or cleaning of mass parts, preferably machine components, in particular of metal, in particular screws, bolts, nuts, Kaltfließpressteile, steel sheet metal stampings, bent parts or the like, in which the mass parts are introduced in a first step in a centrifuge and in The centrifuge are de-oiled, and then washed in one or more steps, and rinsed in a subsequent or subsequent steps and dried. Furthermore, the invention relates to a device for Entölung and / or cleaning of mass parts, preferably machine components, in particular of metal, in particular screws, bolts, nuts, Kaltfließpressteile, Stahlblechstanzteile, bent parts or the like, with a motor-driven centrifuge for receiving the mass parts and a support frame in which the centrifuge is rotatably mounted, wherein mass parts are treated in the centrifuge in several steps.

From the prior art, it is known that in de-oiling and cleaning systems, mass parts, such as screws, bolts, cold extruded parts, sheet steel stamping and bending articles and small-sized hardened material must be cleaned in the tempering process. In the production of such mass parts, these are usually contaminated with oil. In hardening processes, metal parts in oil are quenched and thus brought into contact with oil, which subsequently adheres to the metal parts. Before now, for example, in such hardening processes, the parts are tempered, it is necessary that the oil deposits are removed as completely as possible in order to prevent combustion of the oil in the annealing furnace at high temperatures.

Are known in the art centrifuges that serve both the de-oiling and the cleaning of such mass parts. It is provided that the mass parts are de-oiled in a centrifuge in a first step. The de-oiling is based here on the principle of centrifugal force, that is to say that the oil components adhering to the mass parts are centrifugally discharged from the centrifuge due to the high rotational speed of the centrifuges, which for this purpose has a centrifuge casing with a multiplicity of openings through which the oil particles escape from the centrifuge Centrifuge can escape. The thus ejected oil particles are then deposited on a wall of a bell surrounding the centrifuge, from where the oil particles are collected and removed.

After the mass parts have been de-oiled, the mass parts are fed into another centrifuge, in which the mass parts are cleaned. For this purpose, a washing of the mass parts is provided with a washing fluid, which is also separated at the end of the washing process by centrifugal forces from the mass parts. Once the mass parts have reached a predetermined degree of drying, the mass parts are rinsed in another centrifuge, that is freed from still adhering washing fluid. Again, centrifugal forces are used to remove the flushing fluid with the captured particles of the washing fluid before the mass parts are then subjected to a drying process, with hot air generally being introduced for this drying process.

From the EP 1 043 074 A1 a device for degreasing mass parts is known. This device consists of a rotatable about a vertical axis and drivable drum with perforated drum wall. This drum thus represents the above-described centrifuge. The drum has a loading opening provided above and a bottom-mounted, closable by an axially movable bottom closure discharge, a stationary, surrounding the drum and under an outer ring trough with outlet nozzle outer ring channel, one between outer ring channel and drum arranged, by means of an adjusting means axially adjustable and having an inner ring trough having inner ring channel and feeds for treatment agent in the drum. In this prior art device it is provided that the inner ring channel is made adjustable from the initial position releasing the drum hole into a middle position covering the drum hole and a sealing position sealing the drum. These previously known Device thus allows degreasing and subsequent treatment with complete degreasing of mass parts. For this purpose, it is provided that a sealed container is created from the inner ring channel and the drum, in which the mass parts can be flooded. Thus they are intensively exposed to the respective liquid, for example a degreasing liquid. This process corresponds to a soaking, which greatly facilitates the subsequent release of the oil layer from the upstream deformation process. Irrespective of this, the previous process parts, such as the oil spinner, the spraying with degreasing or other treatment agents and periodic spinning and drying can be performed as needed.

Disadvantage of this known device, however, is that a very great effort in terms of sealing the absorption elements is required. Furthermore, it requires a very large footprint to set up a device of the type described above for large-sized mass parts, such a device is then usually not suitable for small-sized mass parts.

Furthermore, from the DE 101 61 086 B4 a plant for treating mass contained in transport baskets in liquids known. This system has a tank that contains liquid and in which the transport baskets dive. Furthermore, at least one trolley for the transport baskets, with which they are movable over the at least one basin. At least one basket carrier is provided, which is arranged adjustable in height on the trolley and grab a transport basket, dip into the basin and can lift out of the basin, and can drive rotating about the axis of the transport basket. Furthermore, bracing means are provided for bracing the basket carrier with respect to stationary parts near the at least one basin, which can be brought into action at least in a Abschleuderposition the transport basket in the basin above the liquid level.

From the US 2012/031437 A1 is a treatment station with individual treatment drums known. Although these pass through several stations in succession, however, no centrifuging takes place during the circulation of the various treatment drums. In the individual stations, a treatment with different media is carried out in succession.

From the DE 40 15 146 A1 For example, a method is known in which the drum inserts are transferred from station to station. In this device, only one centrifuge is available. In the other two stations, only the filling and emptying of the drum inserts takes place.

Based on this prior art, the invention has the object , a method and a device of the generic type such that the mass parts are treated gently and effectively, with a complete de-oiling and / or cleaning of the mass parts is provided which continuously and in short time with low footprint is possible.

The solution to this problem looks at a method according to the invention that the treatment steps of the de-oiling and the cleaning of the mass parts are carried out with a centrifuge, which is moved in a frame between a plurality of positions arranged substantially in a horizontal plane, wherein in the first position, the mass parts de-oiled (if necessary, chemically treated) and washed and spun in the following positions and then rinsed and spun and also dried preferably.

It is provided that the mass parts are filled only once in the centrifuge, so that a transfer from one basket to another or from one centrifuge to another is not required. Furthermore, the treatment steps can be carried out separately but always in the same centrifuge, since this allows both the de-oiling and the cleaning of the mass parts. The mass parts once added for deoiling in the first station remain in the same centrifuge until final cleaning and drying. As a result, damage to the mass parts are avoided by decanting.

By the inventive method and - as will be described below - through the inventive device Umfüllvorgänge be avoided, so that a wide range of applications not only in the de-oiling and cleaning of mass parts directly after their production process by a press or roller, but also in the annealing process in the De-oiling of hardened material is possible. In particular, for the heat treatment in the annealing furnace, the inventive method and thus the device according to the invention is particularly suitable because with the method according to the invention and thus also with the device according to the invention a very far-reaching Entölungs- and degree of purification can be achieved. For the heat treatment in the annealing furnace, it is imperative that the adhering oil components on the bulk goods (hardened material) must be removed to prevent soot and smoke formation in the annealing furnace. Since a tempering furnace when using the device according to the invention not only de-oiled, but also washed or cleaned bulk receives as feed, results in a tempering furnace safer operation, since the pollution effect is avoided for the tempering furnace or at least substantially reduced and also a deterioration of the hardened material Oil and dirt content is prevented during the subsequent annealing process.

In the method according to the invention is thus provided that in a first step, the mass parts are entered into the centrifuge. This can be done by pouring. Subsequently, the centrifuge is rotated about its longitudinal axis at high speed, so that adhering oil particles are separated from the mass parts and discharged through the perforated outer wall of the centrifuge. For this purpose, an oil release agent can be used in addition, which is inserted into the centrifuge to dissolve the oil components.

After the de-oiling process is completed, the centrifuge is moved from the first position to a second position within the support frame. In this second position, the centrifuge contains the de-oiled mass parts. In this second position, a washing fluid is then introduced into the centrifuge, with which the mass parts are washed. This process can be performed with a reduced number of revolutions of the centrifuge compared to the first step. It is also possible that the centrifuge is switched alternately in opposite directions of movement, or that the centrifuge is slightly tilted about a horizontal axis, so that a movement of the mass parts with each other is possible. As a result, areas are cleaned, which are not accessible by contact between the mass parts with constantly arranged in the same orientation mass parts.

After a predetermined washing time, for example, the washing fluid can also be discharged via centrifugal forces from the centrifuge. Here, the mass parts reach a certain degree of dryness.

Following this, the centrifuge is then again moved in the support frame in a third position. In this third position, the centrifuge is subjected to a flushing fluid which rinses off any adhering constituents of the washing fluid. Here too, the flushing fluid can then be discharged via centrifugal forces. Both in the washing and in the rinsing position, the free drainage of the washing or rinsing medium can be closed by a valve disposed in the centrifuge bottom valve for a certain time phase, so that the Zentrifugeneinfüllgut undergoes a dipping process, while then followed by opening of the valve, a rinsing process , In addition, however, a predominant part of the washing fluid or of the flushing fluid can also be drained off in both positions via a bottom-side valve of the centrifuge. It may also be possible that the rinsing station another Rinsing station must be connected downstream as the fourth station.

In addition, it can now be provided that the centrifuge is acted upon in the last position with hot air. Preferably, the hot air is introduced via the feed opening of the centrifuge, which is optionally sealed by a cover device.

With the hot air, the mass parts are then dried to a desired drying stage before the mass parts are subsequently discharged from the centrifuge in the third position. This can be done for example via a chute, which is arranged below the centrifuge in the support frame. About the chute or chute, the mass parts can then be forwarded to further processing, such as a tempering furnace. For this purpose, usually conveyors, such as conveyor belts or the like are provided.

The arrangement of the centrifuge in a support frame with three or more positions also has the advantage that a complete method can be performed with a device that has only a small footprint.

For this purpose, it is provided in a development of the method according to the invention that the centrifuge after completion of each step on a circular path by a certain angle, esp. 120 °° is moved to a subsequent position for performing the subsequent step.

A further improvement of the method according to the invention is achieved by carrying out the treatment steps with three or more centrifuges simultaneously, wherein each centrifuge is moved to a subsequent position after completion of a step to carry out the subsequent step, so that the movement of the centrifuges between the positions takes place simultaneously. The performance of a corresponding device can be significantly increased by this process step.

On the part of the device according to the invention is provided for solving the problem that the support frame anfährt three or more positions in a horizontal plane, in which the centrifuge for performing a respective treatment step of the mass parts is movable. Here, the movement takes place in a horizontal plane, so that lifting and / or lowering movements of the centrifuge are not required. This leads to, that the design effort for the arrangement of the centrifuge in the support frame is significantly reduced.

According to a further feature of the invention it is provided that in the support frame a plurality of centrifuges are arranged, which are simultaneously movable between the positions via a common drive, in particular pivot drive. By this embodiment, the performance of the device according to the invention is significantly increased. The simultaneous movement of several centrifuges leads to an exact deoiling and / or cleaning process.

Preferably, the positions are located on a circular path around each same angle, in particular 120 ° offset from each other. There is thus the possibility that a plurality of approach positions are provided in the support frame, if, for example, the cooling and drying process is to be carried out separately from one another. In principle, it is also conceivable that in four positions, only three centrifuges are provided and that consequently a position is vacant. As a result, for example, control technology different treatment times can be set in the individual positions. Thus, for example, the de-oiling step take a longer period of time than the subsequent cleaning steps, without the subsequent cleaning steps due to the longer de-oiling step must be stopped.

It has proved to be advantageous to form the support frame in cross-section octagonal. Such a configuration has the advantage that sufficient stability of the support frame can be achieved and at the same time the footprint of such a support frame can be chosen as low as possible. But it is also possible to form the support frame in cross-section rectangular.

Furthermore, it is provided according to a development of the invention that the support frame has a position in which the centrifuge is pivoted about a horizontal axis. As a rule, this is the last position in which it is finally necessary to empty the mass parts from the centrifuge. This is done in this embodiment by pivoting the centrifuge about a horizontal axis, so that the mass parts are transferred via the filling opening on a chute or chute, from where the mass parts are supplied to the further processing process. each the built-in centrifuge is pivotable for total emptying.

It is provided according to a further feature of the invention that the rotational speed of the centrifuge (s) is controllable in dependence on their position (s) in the support frame or are. The same applies with regard to the direction of rotation, which can be varied in order, for example, to effect a rearrangement of parts by mass. For this purpose, known electric motors with a corresponding control can be provided. For example, asynchronous motors have proven to be suitable. Due to the different rotational speeds of the centrifuge, it is possible to drive them in the individual positions with different rotational speed in order to set a high deoiling or a high washing intensity at low rotational speed and thus low energy consumption.

Furthermore, it is provided that the support frame has a rotatably mounted in the support frame central column, which has a support arm for each centrifuge, in particular, these support arms are provided in a star shape on the support bracket. The central column is rotatably mounted in the support frame. For the rotation of the central column in the support frame, an electric motor drive is provided. The central column preferably has one support arm per centrifuge. If only one centrifuge is provided, corresponding counterweights are provided which ensure concentricity. In general, however, all centrifuges are placed on support arms, so that the support arms are arranged in a star shape. At the free ends of the support arms, the centrifuges are provided, each having its own drive, so that the centrifuges are driven in the individual positions with different rotational speeds and / or directions of rotation.

Each centrifuge is preferably part of a centrifuge unit, which has an outer housing with a wall and a bottom deviating from the horizontal and a drive for the arranged in the outer housing centrifuge. The outer housing with the bottom in this case also forms a catch basin for emerging from the centrifuge fluid with or without Ölanhaftungen. Due to the deviating from the horizontal bottom of this fluid is directed to a designated location to which, for example, a drain line is connected, which serves for the removal of the fluid. The fluid can then be supplied to a cleaning device and / or a collecting container, which is emptied or replaced regularly.

In the outer casing, the centrifuge is rotatably disposed relative to the outer casing. For this purpose, the drive motor is provided, which is arranged for example outside of the outer housing so as to be easily accessible for maintenance.

Furthermore, it is provided according to a further feature of the invention that the support frame in the region of the position for deoiling the mass parts has an intermediate bell, which surrounds the centrifuge during the de-oiling step and in particular in a gap space between the centrifuge and the wall of the outer housing is retractable. The intermediate bell serves to collect the oil emerging from the centrifuge and to divert it as intended, so that the oil is used for further use. Furthermore, the bell also serves, of course, not to deliver the oil uncontrolled, so that thereby contamination of the device and / or the environment is caused. In addition, it may also be provided for this purpose that the support frame is completely housed, wherein the housing preferably consists of a plurality of plate members releasably secured to the support frame, so that the device is accessible after removing one or more plate elements at the designated locations.

Fig. 1

eine Vorrichtung zur Entölung und Reinigung von Massenteilen in einer ersten perspektivischen Ansicht;

Fig. 2

die Vorrichtung gemäß Fig. 1 in einer zweiten gegenüber der Fig. 1 um 45° gedrehten perspektivischen Ansicht;

Fig. 3

die Vorrichtung gemäß den Fign. 1 und 2 in Seitenansicht;

Fig. 4

die Vorrichtung gemäß den Fign. 1 bis 3 in Draufsicht;

Fig. 5

eine Zentrifugeneinheit der Vorrichtung gemäß den Fign. 1 bis 4 in teilweise geschnitten dargestellter Seitenansicht;

Fig. 6

eine Zentrifugeneinheit der Vorrichtung gemäß den Fign. 1 bis 4 zur Entölung in perspektivischer Ansicht;

Fig. 7

eine Zentrifugeneinheit zur Reinigung von Massenteilen in einer teilweise geschnitten dargestellten Seitenansicht und

Fig. 8

eine Zentrifugeneinheit zur Trocknung von Massenteilen in teilweise geschnitten dargestellter Seitenansicht.

Finally, it is provided according to a further feature of the invention that the support frame in the region of the position (s) for washing and / or rinsing and / or drying the mass parts has a lid with which an opening for filling the centrifuge (s) can be covered and in particular sealingly closable, wherein in particular the lid has a feed device for a washing and / or rinsing fluid and / or a hot air blower. This embodiment serves for a very simple supply of washing and / or rinsing fluid and moreover has the advantage that corresponding devices need not be realized in the centrifuge. Furthermore, a hot air blower can be integrated in a simple manner in the lid, so that the drying process in a quick and easy way is executable. Further features and advantages of the device according to the invention and of the method to be carried out according to the invention will become apparent from the following description of the accompanying drawings. In the drawing show:

Fig. 1

a device for de-oiling and cleaning of mass parts in a first perspective view;

Fig. 2

the device according to Fig. 1 in a second opposite the Fig. 1 rotated by 45 ° perspective view;

Fig. 3

the device according to the FIGS. 1 and 2 in side view;

Fig. 4

the device according to the FIGS. 1 to 3 in plan view;

Fig. 5

a centrifuge unit of the device according to the FIGS. 1 to 4 in partially sectioned side view;

Fig. 6

a centrifuge unit of the device according to the FIGS. 1 to 4 for deoiling in perspective view;

Fig. 7

a centrifuge unit for cleaning mass parts in a partially sectioned side view and

Fig. 8

a centrifuge unit for drying mass parts in a partially sectioned side view.

In the FIGS. 1 to 4 a device for de-oiling and cleaning of mass parts is shown. The term "mass parts" is in particular machine components, such as screws, bolts, nuts, Kaltfließpressteile, steel sheet metal stampings, bent parts or the like subsumed. The device according to the FIGS. 1 to 4 consists of a support frame 1, which is formed octagonally in cross section. The support frame 1 has a bottom plate 2, are fixed to the vertically oriented stand 3. The mounting of the stand 3 via screws 4, which connect the stator 3 with the bottom plate 2.

In the area above the bottom plate 2, the support frame 1 has horizontally oriented support 5, which according to the bottom plate 2, the octagonal cross-sectional shape of the support frame 1 take up.

In the same way, the support frame 1 in the head region corresponding carrier 6, which are connected to the free, the bottom plates 2 opposite ends of the stator 3. Furthermore, crossbeams 7 are provided, which in the head area, the ends of the stand Connect 3 and are aligned at right angles to two parallel beams 6. Furthermore, crossbeams 7 are arranged in the lower, located in the vicinity of the bottom plate 2 area in the same way. Finally, two further transverse members 7 are provided in the support frame 1, which are located above the arranged in the vicinity of the bottom plate 2 crossbeams 7 and determine a horizontal plane on which the arrangement to be described below of three centrifuge units 8 are arranged.

The centrifuge units 8 are arranged on support arms 9 of a rotatably mounted in the support frame 1 central column 10, wherein the support arms 9 are aligned in a star shape.

About the central column 10, the centrifuge units 8 can be moved relative to the support frame 1 in different positions each for performing a process step for de-oiling and cleaning of mass parts.

The centrifuge units 8 will be described below with respect to the FIGS. 5 to 8 described in detail.

Referring to the FIGS. 1 to 4 , especially the FIGS. 1 to 3 is supplementary to recognize that in the support frame 1 on the bottom plate 2 containers 11 are placed, which serve to absorb oil, washing liquid and / or Spülliquid, as far as this is discharged in the course of the process to be performed from the centrifuge units 8.

Furthermore, it can be seen that the support frame 1 has a chute 12, which serves the discharge of de-oiled and cleaned mass parts.

The already mentioned above central column 10, which is rotatably arranged in the support frame 1, has a drive 13. This drive 13 serves to move the central column 10 relative to the support frame 1, wherein the three centrifuge units 8 by the rotational movement of the central column 10 between the three in Fig. 1 to 4 Positions shown A, B and C are moved. In this regard, a de-oiling of the mass parts is carried out in a position A. In the position B, the masses previously de-oiled in the position A are washed, for which purpose a washing liquid is used. After the mass parts are washed in the position B, the centrifuge unit 8 is moved from the position B to the position C, in which the mass parts are rinsed, so that residual constituents of the wash liquor are removed. Following the rinsing in position C, the mass parts are then dried by hot air. All processes will be described below.

Hereinafter, the centrifuge units 8 according to FIGS. 5 to 8 described.

In Fig. 5 a centrifuge unit 8 is shown. The centrifuge unit 8 has a centrifuge 14 and an outer housing 15 with a wall 16 and a bottom deviating from the horizontal 17, which has a drain opening with outlet connection 19 in the region of its lowest point 18. During the further pivoting movement, the liquid can drain into a collecting channel 20 with a discharge nozzle. The pipeline 20 is connected to a container 11.

It can be seen that the centrifuge unit 8 has a frame 21 which, among other things, also carries a drive motor 22. The centrifuge 14 is rotatably mounted relative to the outer housing 15 and is driven by a drive motor 22. Each centrifuge 14 has a roller bearing mounted vertical shaft 23, which has at its upper, the centrifuge 14 end facing a flange 24 which is connected to the centrifuge drum of the centrifuge 14. The centrifuge 14 is formed perforated in its outer periphery, so that liquids are centrifuged out of the centrifuge 14 outwardly into the outer housing under high centrifugal force. The drive of the centrifuge 14 via the vertical shaft 23, which is driven at the lower end via a V-belt drive 25 with the drive motor 22 designed as centrifuge rotary drive.

The centrifuge 14 has a slightly conical bottom 26, so that during operation of the centrifuge 14, the mass parts to be centrifuged are thrown upwards against the perforated wall of the centrifuge 14.

The centrifuge 14 is further mounted pivotably about a horizontal axis by means of a direct drive, for example a slip-on geared motor. This direct drive has a DC brake, so that the centrifuge 14 remains securely fixed both in the vertical orientation and after pivoting. The pivoting of the centrifuge 14 about the horizontal axis serves to empty the centrifuge 14 to be centrifuged in the centrifuge 14 after completion of the de-oiling or cleaning from the centrifuge 14 and to pass the chute 12, from where the mass parts can be supplied for further processing.

Each of the centrifuges 14 has an already described frame 21, on which the fixed outer housing 15 is pivotally mounted about two horizontally arranged pivot pin. To such a horizontal axis, formed by the two pivot pins, each centrifuge 14 is pivotally mounted in the frame 21 and can be pivoted by the motor described above. The frame 21 is mounted on vibration metal buffer on the star-shaped arm 9 vibration isolation.

The previously described bottom 17, which forms the outer housing 15 together with the wall 16 is arranged to extend obliquely to the horizontal, so that centrifuged liquids are discharged via this bottom 17 to the drain opening 19. In order to prevent that after de-oiling the mass parts in position A residual oil in the interior of the outer housing 15 are carried along in the following positions B and C, the position A has an in Fig. 6 shown intermediate bell 27, which is formed as a pipe section. The intermediate bell 27 is adjustable in its height relative to the centrifuge 14 in the position A and has for this purpose a linear drive 28, for example a hydraulic or pneumatic cylinder, which is arranged in a bridge-like carrier 29. The carrier 29 is connected to the support frame 1.

In position A, the mass parts are introduced into the centrifuge 14 via an opening 30. Following this, possibly also before, the intermediate bell 27 is lowered via the linear drive 28 into a gap 31 between the wall 16 and the centrifuge 14. After lowering the intermediate bell 27, the centrifuge 14 is rotated at a high number of revolutions, so that due to the centrifugal forces, the oil adhering to the mass parts is thrown off and discharged via the perforated wall of the centrifuge 14. This oil is deposited on the inner wall of the intermediate bell 27 and runs on the inner wall in the direction of gravity downwards from. In the lower part, the intermediate bell 27 has a circumferential, not shown collecting channel, which is similar to a gutter. In this collecting channel, the spun-off oil is collected and stored temporarily.

The collecting trough has a drain which is passed through a plug valve during the Operation of the centrifuge 14 is closed.

After completion of de-oiling, therefore upon completion of the rotational movement of the centrifuge 14, the intermediate bell 27 is moved out of the gap 31 via the linear drive 28. Thereafter, the plug valve is opened automatically, so that the collected and located in the collecting channel oil flows through a drain not shown in a funnel nozzle, which has a central connection to an oil return down. This funnel neck is pivoted pneumatically by a pneumatic cylinder when the intermediate bell 27 is disposed above the centrifuge 14.

The oil discharged via the collecting funnel can be supplied, for example, to a container 11, in which the oil is stored for further use. The corresponding container 11 can therefore be arranged interchangeable in the support frame 1.

Fig. 7 shows a centrifuge unit 8 with a lid 32, as it is part of the support frame 1 in the position B. The lid 32 is arranged on a linear drive 33 in the axial direction of the centrifuge 14 and lowered, so that the lid 32 in the lowered position with the wall 16 of the outer housing 15 closes and does not restrict the rotational movement of the centrifuge 14.

The lid 32 is dome-shaped and has on its outer circumferential surface in the region of the outer housing 15 facing the end of a circumferential seal 34 which rests sealingly on the end face of the wall 16 when the lid 32 is mounted. Furthermore, the lid 32 has a plurality of flat jet nozzles 35, via which, for example, washing liquor or rinsing water is introduced into the centrifuge 14 in the desired or required quantity when the lid 32 is attached and sealed. Via the flat jet nozzles 35, the wash liquor or the rinse water can be introduced at high pressure and at an effective spray angle such that the desired cleaning or rinsing effect is established. For this purpose, the flat jet nozzles 35 are connected, for example, to a compressed air membrane pump not shown in detail, which is connected in a pipeline which connects a storage tank with the flat jet nozzles 35.

The lid 32 according to Fig. 7 is arranged in the support frame 1 in the region of the position B, so that the lid 32 cooperates with the centrifuge 14 and the centrifuge unit 8, which is in position B.

After carrying out the washing process in the position B or the rinsing process in the position C, a Luftabblasung takes place on the underside of the lid 32 by means of a rotating central nozzle to blow off adhering drops with the centrifuge housing is still closed. Only then is the lid 32 raised and the centrifuge unit 8 moved from position B to position C.

A provided in the position C lid 32 is in Fig. 8 shown in lowered position. Structurally, this lid 32 corresponds to the lid 32 in accordance Fig. 7 , so that here also a circumferential seal 34 is provided on the outer circumferential surface of the lid 32 for sealing against the outer housing 15, namely the end face of the wall 16.

The lid 32 in the position C has in addition to the flat jet nozzles 35 complementary to an access line 36 which is connected to a hot air blower 37, so that via the access line 36 hot air into the interior of the outer housing 15 and thus into the centrifuge 14 for drying the mass products is initiated. The exhaust air can escape via an exhaust pipe 38.

The device described above has a control device which allows pre-programming of the individual treatment cycles in the positions A to C. In this case, cycle times, centrifuge speed and / or centrifuge direction of rotation are controlled as a function of the mass-produced articles to be de-oiled and cleaned.

The feeding of this device is carried out by a feed conveyor in the form of a Stahl-hinged material conveyor, which receives the einzufüllenden mass products for a Entölungsbeziehungsweise cleaning cycle. The feed takes place in the position A. After completion of the feed, the de-oiling takes place in the position A in the centrifuge 14 located there. To feed the centrifuge 14 in position A, it may be necessary for the supply conveyor to move pneumatically until it reaches the center region of the centrifuge 14. After loading the centrifuge 14 in the position A, the supply conveyor moves back to its original position, so that subsequently the intermediate bell 27 can be retracted from above into the intermediate space between centrifuge 14 and outer housing 15. Thereafter, the Abschleuderung the oil in the position A. After completion of this de-oiling process, the intermediate bell 27 is lifted out of the gap 31 again, so that in a next step, the central column 10 is rotated in the support frame 1 by 120 °. The centrifuge 14, which was previously arranged in position A and now contains deoiled mass parts, reaches position B. In this position B, the centrifuge 14 is covered by the lid 32 and a high-pressure wash liquid is injected via the flat-jet nozzles 35, so that residual pressure is released via the high pressure. Contaminants are solved on the bulk items. During the irradiation of washing liquid, the centrifuge 14 can be operated at a low rotational speed. Also, the direction of rotation during this process can be changed several times, so that a large number of mass-produced articles are supplied with the appropriate jet of washing liquor. Furthermore, a slight inclination of the centrifuge by means of the pivot drive is possible to cause during the washing process, an additional circulation of mass-produced articles.

After the supply of washing liquid has ended, the centrifuge 14 is moved again in the vertical position with a high rotational speed, so that the washing liquid and possibly also dissolved contaminant particles are discharged via the outer circumferential surface of the centrifuge 14.

After completion of this process step in position B, the lid 32 is raised, so that the central column 10 can be rotated in turn by 120 ° within the support frame 1 and the centrifuge 14 reaches the position C in the support frame 1 with the now washed mass parts. In this position C, the lid 32 according to Fig. 8 lowered to the outer housing 15. Here it can now be provided that a further rinsing takes place with a Spülliquid and the process proceeds analogous to the washing process in position B, so that in turn Spülliquid is flowed through flat jet nozzles 35, whereupon after completion of the rinsing process, the centrifuge 14 is driven at a high rotational speed, so that the rinsing liquid is discharged via the outer circumferential surface of the centrifuge 14. The mass products thus undergo a first drying.

Then then the hot air blower 37 is turned on and over Access line 36 hot air are flowed into the rotating at low speed centrifuge 14 for drying the mass products. The exhaust air leaves the centrifuge or the outer housing 15 via the exhaust pipe 38.

After completion of the drying of the mass-produced by hot air, the lid 32 according to Fig. 8 raised. In the next step, the centrifuge 14 is now tilted about the horizontal axis by means of the swivel gear motor, so that the mass products completely, without remaining residual parts on the chute 12, from where they are supplied, for example, a conveyor belt, which supplies the mass products for further processing.

The invention described above relates to a method for de-oiling and / or cleaning of mass parts, preferably machine components, such as screws, bolts, nuts, cold nonwoven pressed parts, sheet steel stampings, bent parts or the like. In which the mass parts are introduced in a first step in a centrifuge and in this Centrifuge without refilling or reloading in several steps de-oiled, washed, rinsed and dried. It is provided that the treatment steps are carried out in one and the same centrifuge without refilling, which centrifuge is arranged on a support frame, which passes through the various treatment processes in succession substantially in a horizontal plane. After completion of each step, the centrifuge is preferably moved on a circular path, at fixed pivoting angles of, for example, 180 °, 120 °, 90 °, 72 °, 60 ° or the like, in each case to a subsequent position for carrying out the subsequent step. In the first position, the centrifuge is filled with the mass parts and in the last position, the centrifuge is emptied. The clocking steps can be carried out simultaneously with several centrifuges, with each centrifuge, after completing a step, being moved to a subsequent position for carrying out the subsequent step, so that the movement of the centrifuges between the positions takes place simultaneously. LIST OF REFERENCE NUMBERS 1 supporting frame 33 linear actuator 2 baseplate 34 poetry 3 stand 35 Flat spray nozzles 4 screw 36 access line 5 carrier 37 Outside air blower 6 carrier 38 air vent 7 crossbeams A position 8th centrifuge unit B position 9 support arm C position 10 Central column 11 container 12 chute 13 drive 14 centrifuge 15 outer casing 16 wall 17 ground 18 Point 19 drain hole 20 pipeline 21 frame 22 drive motor 23 vertical wave 24 flange 25 V-belt drive 26 ground 27 between bell 28 linear actuator 29 carrier 30 opening 31 gap 32 cover

Claims (14)

1. A method for de-oiling and/or cleaning parts from mass production, preferably machine components such as in particular screws, bolts, nuts, cold extruded parts, punched steel sheet parts, bent parts or the like, in which the parts from mass production are in a first step introduced into a centrifuge and de-oiled in the centrifuge, then washed in a second step and finally rinsed in a third step,
   characterized in
   that the steps of de-oiling and/or cleaning the parts from mass production are carried out by means of a centrifuge which can be displaced in a bearer frame between three or more positions that are essentially placed in a horizontal plane, wherein in the first position the parts from mass production will be de-oiled and/or dephosphatised, in the second position they will be washed and submitted to spinning and in the third position they will be rinsed, submitted to spinning and preferably also be dried.
2. A method according to claim 1,
   characterized in
   that after having completed each step, the centrifuge will be displaced on a circular path at equal angles, in particular each comprising 120°, into a subsequent position for carrying out the following step.
3. A method according to claim 1 or 2,
   characterized in
   that the parts from mass production will be filled into the centrifuge in the first position and that the centrifuge will be emptied in the third or fourth position.
4. A method according to one of the claims 1 through 3,
   characterized in
   that the steps will be carried out by several centrifuges simultaneously, wherein each centrifuge will be displaced after completion of a step into a subsequent position for carrying out the following step, such that the movement of the centrifuges between the positions takes place simultaneously.
5. A device for de-oiling and/or cleaning parts from mass production, preferably machine components such as in particular screws, bolts, nuts, cold extruded parts, punched steel sheet parts, bent parts or the like, comprising a centrifuge driven by motors for receiving the parts from mass production and comprising a bearer frame, on which the centrifuge is arranged in a rotating and/or pivoting manner, wherein parts from mass production will be de-oiled and/or cleaned in several steps in the centrifuge,
   characterized in
   that the bearer frame (1) comprises three positions (A, B, C) in a horizontal plane, into which positions the centrifuge (14) can be displaced for respectively carrying out one step of de-oiling and/or cleaning the parts from mass production.
6. A device according to claim 5,
   characterized in
   that several centrifuges (14) are arranged in the bearer frame (1), which centrifuges (14) can be simultaneously moved between several positions (A, B, C) by means of a common drive (13).
7. A device according to claim 5 or 6,
   characterized in
   that the positions (A, B, C) are offset with respect to each other on a circular path by respectively identical swing angles of especially 120°.
8. A device according to one of the claims 5 through 7,
   characterized in
   that the cross section of the bearer frame (1) has an octagonal shape.
9. A device according to one of the claims 5 through 8,
   characterized in
   that the bearer frame (1) comprises a position (C), in which the centrifuge (8) can be pivoted around a horizontal axis.
10. A device according to one of the claims 5 through 9,
    characterized in
    that the rotation speed of the centrifuge(s) (14) can be controlled in dependence on their position(s) (A, B. C) in the bearer frame (1).
11. A device according to one of the claims 5 through 10,
    characterized in
    that the bearer frame (1) comprises a central column (10) arranged in a rotatable manner in the bearer frame (1), which central column (10) comprises a support arm (9) for each centrifuge (14), wherein in particular the support arms (9) are provided in the form of a star on the central column (10).
12. A device according to one of the claims 5 through 11,
    characterized in
    that each centrifuge (14) is part of a centrifugal unit (8) which comprises an outer housing (15) having a wall (16) and a bottom (17) that differs from the horizontal line as well as a drive (22) for the centrifuge (14) arranged in the outer housing (15).
13. A device according to one of the claims 5 through 12,
    characterized in
    that the bearer frame (1) comprises an intermediate cover (27) in the area of position (A) for de-oiling the parts from mass production, which intermediate cover (27) surrounds the centrifuge (14) during the step of de-oiling and which cover (27) can in particular be retracted into a gap space between the centrifuge (14) and the wall (16) of the outer housing (15).
14. A device according to one of the claims 5 through 13,
    characterized in
    that the bearer frame (1) comprises a lid (32) in the area of the position(s) (B, C) for washing and/or rinsing and/or drying the parts from mass production, by means of which lid (32) an opening for filling the centrifuge(s) (14) can be covered and in particular tightly sealed, wherein in particular the lid(s) (32) comprise(s) a supply device (35) for a washing and/or rinsing fluid and/or a fan heater (37).

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