EP0662365A1 - Procédé et appareil pour meuler et/ou polir en particulier les fonds d'objets en céramiques - Google Patents

Procédé et appareil pour meuler et/ou polir en particulier les fonds d'objets en céramiques Download PDF

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Publication number
EP0662365A1
EP0662365A1 EP95100323A EP95100323A EP0662365A1 EP 0662365 A1 EP0662365 A1 EP 0662365A1 EP 95100323 A EP95100323 A EP 95100323A EP 95100323 A EP95100323 A EP 95100323A EP 0662365 A1 EP0662365 A1 EP 0662365A1
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EP
European Patent Office
Prior art keywords
objects
polishing
grinding
receptacle
foot parts
Prior art date
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Granted
Application number
EP95100323A
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German (de)
English (en)
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EP0662365B1 (fr
Inventor
Dipl.-Ing. Voit (Fh) Karl
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Voit Michael GmbH
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Voit Michael GmbH
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Publication of EP0662365A1 publication Critical patent/EP0662365A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/008—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding ceramics, pottery, table ware

Definitions

  • the invention relates to a method and an apparatus for grinding and / or polishing, in particular of foot parts of glazed and fired clay or porcelain (foot parts of ceramic moldings), such as flatware, preferably plates and plate-like objects with round and / or angular and / or oval shape.
  • the base areas such as base parts of ceramic moldings
  • the base areas are either not glazed or freed from the glaze in the case of pottery or porcelain goods, since they are used in particular as firing surfaces during firing, for example for resting on storage plates in kilns.
  • These unglazed parts, in particular unglazed foot parts are therefore rough on the surface after firing. Since the ceramic moldings are removed after firing and stacked to form bumps, these foot parts with a rough surface, which serve as a footprint, lead to scratching during the formation of bumps or piles, and consequently damage the glazed and fired surface of an object underneath in the stack.
  • the stacked, glazed and fired shaped bodies can move and shift relative to one another if they are transported to downstream processing devices with the aid of the transport devices.
  • Such scratched glaze surfaces or surfaces of the glazed and fired ceramic moldings are of inferior quality and can therefore only be offered in the trade as clay or porcelain goods at a discount.
  • foot grinders In order to avoid such rough surfaces on a glazed and fired or smoothly fired ceramic molded body, foot grinders have been used to date, which allow a fully automatic grinding of this rough surface, in particular of the foot parts, in the wet or dry state.
  • These grinding machines have a grinding belt which is subject to considerable wear during grinding and which requires a great deal of effort when it comes to disposal.
  • such grinding machines In order to be able to achieve a sufficient grinding and smoothing of the rough surfaces, in particular of the foot parts, such grinding machines comprise several grinding stations with different grinding belts from coarse to fine grain. Even if one checks the glazed and fired ceramic shaped bodies for cracks and discards ceramic shaped bodies with cracks, practice has shown that the grinding belts tear very often in such a grinding machine.
  • the previous grinding of rough surfaces not only requires separate machines with expensive grinding aids, but also such grinding results in considerable increases in manufacturing costs.
  • the invention therefore aims to provide a method and a device for grinding and / or polishing, in particular of foot parts of glazed and fired clay or porcelain, such as flatware, preferably plates or plate-like objects, which effectively grind and smooth rough surfaces Allow surfaces of ceramic moldings in a largely fully automatic manner and without separate grinding machines.
  • a method for grinding and / or polishing, in particular of foot parts of glazed and fired clay or process goods, such as flatware, preferably plates or plate-like objects is characterized in that the foot parts of two objects are mutually ground and / or polished that the foot parts resilient in a slightly off-axis arrangement are resiliently pressed against each other, perform a relative rotational movement to one another and a pendulum movement around the protruding edge regions of the foot parts.
  • the rough surfaces, in particular of foot parts are thus ground and polished by being moved relative to one another, preferably without the use of abrasive belts, directly under mutual contact in conjunction with a predetermined grinding pressure, and thereby effecting the grinding and / or polishing processing .
  • a processing method can be integrated in terms of process technology and manufacturing technology, particularly in a production line for the production of pottery or porcelain, without interruptions in the production process. This results in an economical and inexpensive machining for grinding and / or polishing rough surfaces, in particular of foot parts on glazed and fired ceramic moldings.
  • the method according to the invention also eliminates all of the difficulties that have previously arisen in connection with the separate grinding machines using expensive grinding belts with different grain sizes.
  • the method according to the invention enables grinding and / or polishing of these rough surfaces, for which purpose appropriate working conditions are selected when carrying out the method with the aid of the same means, and in this case a matching to the size, type, shape or the like of the ceramic to be processed Shaped body is possible without difficulty.
  • the two objects to be processed preferably directly under mutual contact, are preferably rotated in opposite directions, since greater frictional forces can be applied for the grinding operation.
  • polishing however, the objects to be processed can be rotated in the same direction, but at different speeds.
  • this can Grinding and / or polishing can be carried out wet or dry.
  • the particular choice of processing conditions preferably depends on the material to be processed and / or other quality requirements.
  • the ground and / or polished objects can preferably be cleaned, for example wet cleaned and optionally dried.
  • a cloth material such as a polishing cloth
  • the cloth material is preferably an endless cloth material which is moved on, for example, by means of preferably driven roll-up and roll-off rolls, as required. With such a procedure, the polishing process can preferably be optimized and significantly improved polishing results are obtained.
  • the method according to the invention for grinding and / or polishing rough surfaces, in particular foot parts of clay or porcelain objects can be used in a universal manner and can be adapted to the respectively required requirements and circumstances, so that one can be made in a technically advantageous manner and in a reliable manner Can avoid quality degradation by scratching burned surfaces when handling objects removed from kilns.
  • the procedure according to the invention allows the provision of high-quality glazed and fired clay and pottery goods while achieving low manufacturing costs.
  • a device for grinding and / or polishing, in particular of foot parts of glazed and fired clay and Process goods, such as flatware, preferably plates or plate-like objects are provided, which are characterized in that a receptacle keeps two objects to be processed slightly offset with their foot parts facing one another, the receptacle is radially and axially movably supported in the central region, and can be driven in a speed-controllable manner, and the receptacle resiliently presses the foot parts against one another around their protruding edge regions while performing a pendulum movement.
  • a special receptacle which holds two objects to be processed such that the rough surfaces to be processed, such as the feet of plates, face each other, and that the grinding and / or polishing processing then, if necessary, directly physically, mutually takes place in that these areas to be machined, which are preferably slightly offset from one another, are pressed against each other and rotated relative to each other.
  • the device according to the invention thus enables the most effective grinding and / or polishing processing of rough surface areas of ceramic shaped bodies, in particular of foot parts thereof, in a structurally simple and space-saving manner.
  • this processing is carried out in the device according to the invention without additional effort and almost automatically, grinding and / or polishing processing under optimal conditions and conditions.
  • This preferably so-called self-grinding by the method according to the invention and in the device according to the invention surprisingly results in high-quality and excellent ground and / or polished Surfaces in the desired areas.
  • the receptacle preferably comprises two receptacles which are arranged at a distance and have end faces which prevent the objects being scratched from being scratched, an object to be machined being held on the end faces of each receptacle preferably by means of a vacuum.
  • a driver disk is assigned to the receiving device according to the invention, which is fixedly connected to a drive shaft of an associated, speed-adjustable drive, for which purpose, for example, a belt drive or the like can be provided, and wherein the drive plate is resiliently connected in a rotationally fixed manner to the receiving plate, to allow the degrees of freedom of movement of the respective receiving plate that are necessary for achieving optimum machining.
  • the receiving disks of the receiving device can be arranged at different distances from one another using corresponding additional actuating devices without the basic construction of such a receiving device needing to be changed.
  • the device according to the invention can be used universally for carrying out grinding and / or polishing processing.
  • An elastic membrane is preferably provided for the rotationally fixed connection of the driving disk and the receiving disk.
  • Such an elastic membrane allows the receiving disk to be carried in connection with the driving disk when the rotary movement is carried out, but relative movements taking into account the opposing surfaces are possible without disturbing the operation of the device, and these are compensated for with the aid of the elastic membrane.
  • the pressing force exerted by the receptacle preferably changes during grinding and / or polishing Circumferential direction of the recording. Starting from a greatest value, the pressing force preferably decreases over half a circumference of the receptacle to a smallest value. Due to the changing pressure forces over the circumference of the receptacle, the grinding and / or polishing processing can be optimized directly on the surfaces rubbing against each other.
  • the pressing force is preferably applied or the pressing forces are applied via springs, preferably compression springs, which are arranged between the receiving disk and the driving disk of the respective receiving device. These springs can produce different spring forces distributed over the circumference, which then lead to the pressure forces during machining also changing in accordance with the arrangement.
  • wet processing can preferably be carried out in the device according to the invention, for which purpose, for example, a liquid cooling device is provided for grinding and / or polishing , which preferably has a nozzle directed toward the base parts for dispensing cooling liquid, preferably water.
  • a liquid cooling device is provided for grinding and / or polishing , which preferably has a nozzle directed toward the base parts for dispensing cooling liquid, preferably water.
  • the device according to the invention can also be used for wet processing.
  • a cloth material which is preferably used for polishing, is arranged between the foot parts which are held towards one another and pressed against one another by means of the receptacle. If an endless cloth material is used here, it can be guided over opposite unwinding and reeling rollers, at least one of the rollers being driven.
  • a stepping motor is expediently used for the drive, so that when the cloth material is used up, a fresh cloth material is automatically introduced into the working and working area without interrupting the operating sequence of the device with the help of a fully automatic step-by-step operation.
  • sensors can be assigned to the cloth material, which automatically monitor and detect the condition of the effective area of the cloth material.
  • the device for grinding and / or polishing can be followed by a cleaning device.
  • the receptacle holds the processed objects in such a way that the processed foot areas are arranged at a distance from one another.
  • a spray device is preferably used for cleaning, which in particular directs water onto the spaced-apart foot parts and which is arranged between them.
  • the spray device preferably comprises a plurality of spray nozzles in the diameter direction of the objects which are held at a distance by means of the receptacle and which direct corresponding spray jets onto the processed foot region.
  • the objects to be cleaned rotate during the cleaning treatment, for which purpose the drive devices provided for the grinding and / or polishing processing are used for the parts of the receptacle.
  • the rotational speed or the rotational speed of the rotating objects, which are cleaned, for example with the aid of spraying is increased with the aid of the speed-controllable drive, so that excess cleaning fluid is thrown off the processed and cleaned objects and drying can be accelerated.
  • a wet cleaning device it is provided that this is followed by a drying device in which the objects which are held, cleaned or rinsed by means of the receptacle are preferably dried with warm air.
  • the cleaned objects do not need to be converted, but the same holder is used for this drying treatment that is also used in the grinding and / or polishing processing.
  • the drying device preferably comprises an air nozzle device which is arranged between the cleaned objects, which are held at a distance by means of the receptacle. This allows the drying device to act effectively on the cleaned objects in order to achieve rapid drying.
  • the air nozzle device preferably has a slot-shaped air nozzle outlet which extends in the diameter direction of the receptacle and the object to be treated, this slot-shaped air nozzle outlet extending in particular essentially over the entire diameter dimensions of the receptacle.
  • the air nozzle outlet is designed in the form of a slot in a spiral, preferably S-shaped, the turning area of the S-shaped shape preferably passing through the center of the receptacle or the receiving disks.
  • the drying process can be further optimized in that the objects held in the drying device are spaced with a turn to the air speed, taking into account the temperature of the dry air, if necessary.
  • the direction of rotation can be selected in a corresponding manner, and the optimal ratios can then be determined and determined empirically.
  • a feed device is connected upstream of the device for grinding and / or polishing, and this or one of the aftertreatment devices, such as the cleaning device and / or the drying device, is followed by a delivery device.
  • the objects to be processed in pairs can be automatically transferred to the corresponding devices and devices, such as the receptacle or the like, and then removed from them again.
  • the feed device removes the objects to be treated in pairs from a feed-side conveyor, preferably an intermittently operable conveyor belt or parallel conveyor belts in a substantially horizontal and slightly off-axis position, and arranges the objects with each other by executing a counter-rotating movement of 90 ° with the foot parts facing to.
  • a feed-side conveyor preferably an intermittently operable conveyor belt or parallel conveyor belts in a substantially horizontal and slightly off-axis position
  • the objects to be processed are transferred in pairs to the receptacle in the predetermined arrangement. In this way, the degree of automation of such a system can be further increased.
  • the feeding device preferably comprises a suction device arrangement with two suction devices which can be rotated in opposite directions by 90 ° and which can preferably be rotated via assigned and meshing gear wheels via a common drive, such as a servomotor or the like.
  • a suction device arrangement with two suction devices which can be rotated in opposite directions by 90 ° and which can preferably be rotated via assigned and meshing gear wheels via a common drive, such as a servomotor or the like.
  • a delivery device which, based on the position in which its foot parts or the processing areas face each other, executes the objects treated in pairs by executing a counter-rotating movement of about 90 ° in each case to a delivery device on the delivery side essentially horizontal alignment, wherein the conveyor is preferably formed on an intermittently operable conveyor belt or intermittently operable parallel conveyor belts.
  • the objects treated, ground and / or polished according to the invention are then transported to further processing devices.
  • the details of the delivery device are essentially similar to those of the receiving device, as has already been described above.
  • the feed device and the delivery device are expediently assigned a common transfer device which permits appropriate handling for the paired arrangement of the objects to be processed in the assigned receptacle.
  • a transfer device which has two arms, arranged at an angle of approximately 90 °, with suction devices for holding the objects to be treated on their outer, ie their glazed and fired, bottom area.
  • These two arms preferably form a body which is rotatable about a common axis in such a way that the objects to be treated are transferred in pairs from the feed device to the receptacle and the treated objects are delivered in pairs to the delivery device.
  • Such a common transfer device allows the simultaneous handling in pairs of objects to be treated and treated, so that a clock-controlled Movement sequence can be achieved, and thereby the intermediate handling times can be significantly reduced.
  • the device for grinding and / or polishing and optionally the further treatment devices as well as the feeding, transferring and dispensing device can be arranged in the form of a turntable system or a linear system.
  • the essential details according to the invention and the respective treatment steps are, apart from intermediate conveying means, independent of the configuration as a turntable system or linear system.
  • the design of the invention is in no way limited to a rotary table system.
  • a transfer station a station with a device for grinding and / or polishing, optionally a cleaning station and a drying station can be arranged on a turnstile at regular angular intervals over an angular range of 360 °.
  • a linearly movable transfer device is provided instead of a rotatable transfer device.
  • the system and the system such as in the form of a rotary table system or a linear system, it is essential according to the invention that the objects to be processed, which are ground and / or polished in particular on their foot parts and foot areas should be processed, either directly or with the interposition of a cloth material in mutual physical contact during grinding and / or polishing, and that using one and the same holder, which is intended for grinding and / or polishing, can carry out further treatment steps depending on the desired process sequence, such as cleaning, drying and the like.
  • excellent processing and treatment results can be achieved in a surprisingly favorable manner in terms of production technology and with the shortest possible production times.
  • the design and process engineering effort is also considerably less than in the previous treatment methods, in which separate grinding machines and / or polishing machines have to be provided, to which the objects to be treated have to be transported. Such grinding machines also only allow individual processing of objects to be treated.
  • the processing power is increased by about twice as compared to the previous treatment method, apart from the fact that the invention allows fully automatic processing and possibly necessary further treatment steps, such as cleaning and drying.
  • shaped bodies of this type are generally referred to as flatware, and they are plates or plate-like objects, such as plates and the like, which can have a round and / or angular and / or oval shape. These objects still have rough, unprocessed foot parts or foot areas.
  • a plate is used as an abbreviation for the above-mentioned definition of the term, which in the figures of the drawing with 2 in the glazed and fired or smooth-burned state and in the treated or processed state with 2 'is designated.
  • such a plate 2 comprises a base area with a foot part 2a with a protruding edge area 2b, which forms the actual footprint or foot. Furthermore, an inner base region 2c is provided between the foot part 2a, and the plate 2 has an upper-side base region 2d on its upper side.
  • a turntable designated overall by A, has corresponding facilities for stations II to V at regular angular intervals of approximately 90 °.
  • a complete operation from the task to delivery and delivery is carried out by means of a corresponding indexing movement of 90 ° during undergo a complete orbital movement through 360 °.
  • the plates 2 arriving on a feed-side conveyor are centered and arranged in pairs in such a way that the plates 2 are arranged such that they are centered, but in pairs there is an axially offset assignment, as is the case is shown below in particular in connection with FIG. 5.
  • the feed-side conveyor 1 can be operated intermittently and, in the example shown, comprises two parallel, feed-side belts 1 '.
  • station I is assigned a task device, generally designated 3, from which the plates 2 are transferred in pairs to station II by means of a transfer device, generally designated 4.
  • station III which represents the next switching step during the switching sequence, forms a device for grinding and / or polishing, which is designated overall by S, and the details of which are shown in FIG. 5.
  • a cleaning device designated overall by R in station IV This is then optionally followed by a cleaning device designated overall by R in station IV.
  • station V drying is then optionally carried out with the aid of a drying device designated overall by T.
  • a transfer is then carried out to a delivery device, designated overall by 5, by means of which the processed objects in station VI are delivered to a delivery device which is denoted overall by 6 and which, for example, comprises two synchronously running, intermittently operable delivery belts 6 '.
  • the feed device 3 comprises a suction arrangement with two suction devices 7, which can be actuated and moved, for example, with an associated compressed air cylinder 8.
  • Each suction cup 7 with the associated air cylinder 8 is operatively connected to a gear wheel 9 via a support arm 31 which is L-shaped, the two gear wheels 9 being in meshing engagement with one another.
  • the feed device 3 can be moved in the longitudinal direction to the feed-side conveyor device 1, for which purpose the feed device 3 is mounted so as to be longitudinally displaceable by means of a slide-like device 10.
  • a longitudinal displacement movement is also carried out with the aid of the slide-like device 10, as is illustrated by an arrow in FIG. 2.
  • the plates 2 are thus removed in the predetermined position and arrangement from the feed-side conveying device 1 and arranged in the position which is illustrated, for example, in FIG. 1.
  • the pair of plates 2 arranged in this way is then transferred, starting from the arrangement according to FIG. 1, with the aid of the transfer device 4 to a receptacle generally designated 30, the further details of which are explained in particular in connection with FIG. 5.
  • the transfer device 4 has two arms 4a arranged at an angle of approximately 90 °, which are preferably connected to form a body. These two angle arms 4a can be rotated about a common axis of rotation 4b, as illustrated by an arrow in FIG. 2. At their respective free The ends of the arms 4a carry suction cups 11 and 33, as can be seen, inter alia, from the schematic view according to FIGS. 3 and 4 and from FIG. 1. With the help of the suction cups 11 of the transfer device 4, the two plates 2 arranged with the aid of the feed device 3, as shown in FIG. 1, are held on the transfer device 4. The finished plates 2 'indicated in station II in FIG.
  • the transfer device 4 for example in FIG. 2, is rotated clockwise about the common axis of rotation 4b, so that the finished pair of plates 2 'held on the transfer device 4 is delivered to the delivery device 5 in FIG. 2 or 1, and at the same time the pair of plates 2 to be taken over and processed by the feed device 5 is moved to the receptacle 30 and transferred.
  • the delivery device 5 is moved in the longitudinal direction via a sled-like device 15 such that at the end of the movement the two finished plates 2 'are placed on the belts 6' of the delivery device 6 on the delivery side.
  • the feed device 3 moves back into the starting position shown in FIG. 3 by executing a longitudinal displacement movement with the aid of the slide-like device 10 and a corresponding turning back of the suction arrangement.
  • the dispenser 5 executes a longitudinal displacement movement over the sled-like device 15 and a rotation of the suction arrangement into the in Fig. 4 shown starting position back.
  • a device for grinding and / or polishing the base parts 2a of a pair of plates 2, designated overall by S, will now be described in more detail with reference to FIG. 5.
  • the structure of the recordings 30 explained below corresponds to the respective recordings, which are shown schematically in stations III to V in FIG. 1 of the drawing. It is therefore sufficient to explain only one receptacle 30 in connection with FIG. 5.
  • the receptacle 30 in the device designated as S for grinding and / or polishing comprises holding disks 30 ', on the end faces of which a plate 2 to be machined is held, for example by means of vacuum, in such a way that the foot part 2a of each plate 2 to be machined is the other foot part 2a is facing.
  • the vacuum is applied to the end face of the respective receiving disk 30 'via the vacuum connection 16 and a connecting device designated 17.
  • a connecting channel 16a passes through a drive shaft 40 and which will be explained in more detail below in each case an associated drive plate 20 of the receptacle, and a communicating connection is then established with the aid of the connecting device 17 from the connection duct 16a to the duct 16b leading to the end face of the receptacle disc 30 '.
  • the connecting device 17 can be a so-called vacuum band, which is to be understood as a tubular, flexible connecting line.
  • each receiving disk 30 'of the receptacle 30 is assigned a driving disk 20, which is connected in a rotationally fixed manner to a respective drive shaft 40, which is fixed in place with the aid of a combined axial and radial bearing 32.
  • This drive shaft 40 is driven by a speed-controllable drive (not shown) and a drive belt 23.
  • Each drive plate 20 is connected to the rotary drive via an elastic membrane 19 with the respectively associated receiving plate 30 '.
  • Each receiving disk 30 ' is mounted with the aid of a support indicated at 80 to be slightly axially and radially displaceable with respect to the driving disk 20.
  • a pressure control unit 24 With the aid of a pressure control unit 24, the basic contact pressure for the plates 2 to be machined in the receptacle 30 shown in FIG.
  • FIG. 5 can be adjusted in a controllable manner, and moreover the distance between the two opposing receptacle disks 30 'can thereby be adjusted.
  • 20 springs, in particular compression springs 21, 22 are provided between the respective receiving disk 30 'and the driving disk in an arrangement distributed in the circumferential direction.
  • 21 denotes, for example, a compression spring with a maximum compression force and 22 a compression spring with a minimum compression force.
  • further springs or compression springs (not shown in more detail), each of which exerts pressure forces which decrease in their order, starting from the compression spring 21 with maximum compression force, to the compression spring 22 with the smallest compression force.
  • these springs 21, 22 are preferably arranged symmetrically opposite each other in the diameter direction, so that the springs overall over the circumference of the receiving disc 30 'and Drive plate 20 are arranged evenly distributed.
  • a pressure force profile which is desired in accordance with the conditions and which is optimally matched to the desired processing, such as grinding or polishing, can be applied to the respective receiving disc 30 '.
  • the foot parts 2a including the projecting edge regions 2b are immediately physically moved against each other and pressed against one another with a predetermined contact pressure, so that a corresponding machining takes place by executing a pendulum movement and a relative rotary movement between the foot parts 2a to be machined.
  • the two plates 2 to be machined are driven in opposite directions via the respective drive shafts 40 and the drive plates 20.
  • the receiving disks 30 'with the plates 2 held thereby can be driven in the same direction but via the drive disks 20 and the drive shafts 40 via the assigned and separately controllable drive devices, but at different rotational speeds and different speeds.
  • Such drive conditions are particularly suitable for polishing, while one preferably takes a counter-rotating movement when grinding the foot parts 2a.
  • This device S thus allows the foot parts 2a of two objects, in the example shown plate 2, to be mutually ground and / or polished by the foot parts 2a being resiliently pressed against one another in a slightly axially offset arrangement, and a relative rotational movement to one another and one Carry out a pendulum movement around the protruding edge areas 2b of the foot parts 2a.
  • two objects to be machined plates
  • the receptacle 30 is mounted so that it can move radially and axially in the central region via the support 18.
  • the respective receiving disc 30 'of the receptacle 30 Via the drive plate 20 firmly connected to the drive shaft 40 and the resilient connection via the elastic membrane 19 is the respective receiving disc 30 'of the receptacle 30 at the same time rotated in a predetermined manner either in the opposite direction or in the same direction with selectable speeds, with the help of springs 21, 22 distributed over the circumference of the receiving discs 30' different compressive forces are applied during grinding and / or polishing .
  • the foot parts 2a of two plates 2 are machined with mutual physical contact for grinding or polishing the respective surfaces.
  • the processing for grinding and / or polishing can be carried out wet, for which purpose a coolant, if appropriate in conjunction with an abrasive and / or polishing agent, such as water, via a nozzle 25 onto the processing area of the device S in Fig. 5 can be conducted. If this liquid, which is dispensed via the nozzle 25, is used simultaneously or alone for cooling, the device S is effectively cooled in the processing area in order to avoid thermal stresses in the glazed and fired plates 2 and thereby possible crack formation.
  • the processing of the plates 2 in the device S can also be carried out dry, if necessary, so that the nozzle 25 need not necessarily be provided.
  • FIGS. 9 and 10 An embodiment variant of a device S 'for grinding and / or polishing is explained in more detail with reference to FIGS. 9 and 10, in which the same or similar parts as in the embodiment details described above are provided with the same reference symbols. In particular, the explanation is based on the details which were previously explained in connection with FIG. 5.
  • a cloth material 41 is provided which is offset but axially offset between the facing and pressed against each other mutually arranged foot parts 2a is arranged in the overall device shown with S 'in FIGS. 9 and 10.
  • this cloth material 41 which is preferably used for polishing, even more optimal polishing results are obtained for the objects to be polished, in particular in the area of the foot parts 2a.
  • the cloth material 41 is laid out endlessly and runs over an opposite unrolling roller 42 and an associated reeling roller 43. At least one or both of the unwinding and reeling rollers 42 and 43 is driven, so that the used tissue material in the effective area of the foot parts 2a in the direction of the reeling roller 43 can be moved step by step, so that the grinding and / or polishing processing can be carried out in an efficient manner without an interruption of operation of the device S 'in such a way that a fresh, effective cloth material area is then again available in the working area and effective area of the device S'.
  • a stepper motor 44 is preferably used for the drive, or if the unwinding roller 42 and the reel-up roller 43 are driven, an associated stepper motor is provided for each drive.
  • the cloth material can be moved in predetermined switching steps per activation of the drive device in the form of the stepping motor 44 in such a way that a fresh and unused cloth material is then arranged again on the effective area of the device S 'with the foot parts 2a held against one another. It is sufficient to advance the cloth material in small steps, since a fresh cloth material only has to be available for the effective areas, so that the cloth material 41 can be optimally used and used.
  • the foot parts 2a to be machined are therefore not physically pressed against one another, but instead the cloth material 41, which is preferably a polishing cloth material, is arranged between them.
  • FIG. 6 With reference to station IV in FIG. 1 and with reference to FIG. 6, an example of a possibly downstream one is shown Cleaning device R explained.
  • the respective receiving disks 30 'with the plates 2 held there are axially displaced and moved apart from one another with respect to the arrangement shown in FIG. 5, so that the foot parts machined in the device S, S' 2a the plate 2 have a distance from each other.
  • the cleaning device R comprises a spray device 26, which in the diameter direction of the receptacle 30 comprises a plurality of spray nozzles 27 which, in the arrangement shown in FIG. 6, directs spray jets for cleaning onto the respectively assigned surfaces of the plates 2 arranged in pairs.
  • the two plates 2 held with the aid of the receptacle 30 are rotated either in the same direction or in the opposite direction via the associated and not shown speed-controllable drive, of which only the drive belt 23 is shown for clarity.
  • the respective area of the processed plate 2 can be cleaned in an efficient manner, preferably with the aid of water or another liquid, so that abrasion accumulated and adhering during the processing by the device S, S 'is quickly and reliably rinsed off and can be removed.
  • the cleaning device R can also be designed in a way that differs from the embodiment shown.
  • the speeds and the sense of rotation of the receiving disks 30 'and the plates 2 held there are matched to one another in a correspondingly suitable manner, suitable operating ranges preferably being determined empirically.
  • the speeds of the drive shafts 40 are preferably changed noticeably in the sense of an increase, so that, for example, excess liquid still adhering to the plates 2 can be thrown off.
  • a drying device T which may be provided in station V is explained in more detail, for example.
  • the two plates 2 processed in the device S, S 'and possibly treated in the cleaning device R are also kept at a distance from one another with the aid of the receptacle 30.
  • An air nozzle device 28, which has an air nozzle 29, is arranged in the drying device T between the foot parts 2 a of the plates 2 that are opposite each other at a distance. With the help of this air nozzle device 28, warm air is preferably directed via the air nozzle 29 onto the respectively opposite plates 2 for drying the same.
  • FIG. 8 shows a preferred embodiment of a slot-shaped air nozzle outlet, designated 29a, which is designed in a spiral or S-shape, the turning area lying approximately in the central axis area of the respective receiving disk 30 'and the plate 2 held there.
  • an air nozzle outlet 29a designed in this way, warm air can be blown uniformly over the entire diameter of the plate 2 onto the plate 2 via the air nozzle device 28 in order to effect efficient and rapid drying in the drying device T.
  • the plates 2 can perform a rotary movement about their axis with the aid of the receptacle 30, as is illustrated by an arrow in FIG. 7, for which purpose the drives assigned to the respective receptacle 30 are used, which were previously explained in connection with FIG. 5 .
  • the speed of rotation is in this case preferably matched to the air speed, the temperature of the warm dry air discharged with the aid of the air nozzle device 28 also being taken into account where appropriate.
  • the most favorable conditions can be determined empirically and depend on the shape, dimensions and the like of the objects to be treated in the drying device T, such as the plates 2. Of course, different embodiments are possible from the illustration possible with regard to the design of the drying device T.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP95100323A 1994-01-11 1995-01-11 Procédé et appareil pour meuler et/ou polir les fonds d'objets en céramiques Expired - Lifetime EP0662365B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4400559 1994-01-11
DE4400559A DE4400559A1 (de) 1994-01-11 1994-01-11 Verfahren und Vorrichtung zum Schleifen und/oder Polieren, insbesondere von Fußteilen von glasiertem und gebranntem Ton- oder Porzellangut

Publications (2)

Publication Number Publication Date
EP0662365A1 true EP0662365A1 (fr) 1995-07-12
EP0662365B1 EP0662365B1 (fr) 1998-04-22

Family

ID=6507709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100323A Expired - Lifetime EP0662365B1 (fr) 1994-01-11 1995-01-11 Procédé et appareil pour meuler et/ou polir les fonds d'objets en céramiques

Country Status (4)

Country Link
EP (1) EP0662365B1 (fr)
CZ (1) CZ7395A3 (fr)
DE (2) DE4400559A1 (fr)
SK (1) SK4295A3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857543A1 (fr) * 1997-02-07 1998-08-12 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Dispositif pour tourner des pièces avec système à vide integré et appareil comprenant ce dispositif
CN106273155A (zh) * 2016-08-30 2017-01-04 重庆凯龙科技有限公司 隔热板加工一体化机构
CN116833860A (zh) * 2023-08-31 2023-10-03 沈阳明禾石英制品有限责任公司 陶瓷型芯智能机器人打磨装备自动装夹具随动系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109333220B (zh) * 2018-10-16 2024-01-30 刘小辉 一种沉降式磨边机及其磨边加工方法
CN113770851A (zh) * 2021-10-10 2021-12-10 江苏富乐德石英科技有限公司 一种高效的石英环生产工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420751A (en) * 1922-06-27 Lapping machine
DE3636602A1 (de) * 1985-11-29 1987-06-04 Ve Wissenschaftlich Tech Betri Schleifanlage fuer feinkeramische erzeugnisse
DE3807780A1 (de) * 1988-03-09 1989-09-21 Zeidler Kg Maschf Heinrich Anlage zum saeubern des fusses bzw. der unterseite keramischer produkte
DE4104459C1 (en) * 1991-02-14 1992-02-20 Heinrich Zeidler Maschinenfabrik Gmbh & Co Kg, 8672 Selb, De Grinding machine for plates - uses flexible grinding belts engaging support rings on bottom of plates
EP0488143A1 (fr) * 1990-11-29 1992-06-03 Heinrich Zeidler, Maschinenfabrik GmbH & Co.KG Méthode pour le meulage des surfaces de support d'articles en céramique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420751A (en) * 1922-06-27 Lapping machine
DE3636602A1 (de) * 1985-11-29 1987-06-04 Ve Wissenschaftlich Tech Betri Schleifanlage fuer feinkeramische erzeugnisse
DE3807780A1 (de) * 1988-03-09 1989-09-21 Zeidler Kg Maschf Heinrich Anlage zum saeubern des fusses bzw. der unterseite keramischer produkte
EP0488143A1 (fr) * 1990-11-29 1992-06-03 Heinrich Zeidler, Maschinenfabrik GmbH & Co.KG Méthode pour le meulage des surfaces de support d'articles en céramique
DE4104459C1 (en) * 1991-02-14 1992-02-20 Heinrich Zeidler Maschinenfabrik Gmbh & Co Kg, 8672 Selb, De Grinding machine for plates - uses flexible grinding belts engaging support rings on bottom of plates

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857543A1 (fr) * 1997-02-07 1998-08-12 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Dispositif pour tourner des pièces avec système à vide integré et appareil comprenant ce dispositif
CN106273155A (zh) * 2016-08-30 2017-01-04 重庆凯龙科技有限公司 隔热板加工一体化机构
CN106273155B (zh) * 2016-08-30 2019-02-19 重庆凯龙科技有限公司 隔热板加工一体化机构
CN116833860A (zh) * 2023-08-31 2023-10-03 沈阳明禾石英制品有限责任公司 陶瓷型芯智能机器人打磨装备自动装夹具随动系统
CN116833860B (zh) * 2023-08-31 2023-11-24 沈阳明禾石英制品有限责任公司 陶瓷型芯智能机器人打磨装备自动装夹具随动系统

Also Published As

Publication number Publication date
DE4400559A1 (de) 1995-07-13
EP0662365B1 (fr) 1998-04-22
SK4295A3 (en) 1996-03-06
DE59501941D1 (de) 1998-05-28
CZ7395A3 (en) 1996-06-12

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