EP3851262A1 - Coulée sous pression de batterie pour corps creux en céramique - Google Patents

Coulée sous pression de batterie pour corps creux en céramique Download PDF

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Publication number
EP3851262A1
EP3851262A1 EP21150543.3A EP21150543A EP3851262A1 EP 3851262 A1 EP3851262 A1 EP 3851262A1 EP 21150543 A EP21150543 A EP 21150543A EP 3851262 A1 EP3851262 A1 EP 3851262A1
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EP
European Patent Office
Prior art keywords
die casting
casting molds
cavities
mold
gripping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21150543.3A
Other languages
German (de)
English (en)
Other versions
EP3851262C0 (fr
EP3851262B1 (fr
Inventor
Alois Seer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lippert GmbH and Co KG
Original Assignee
Lippert GmbH and Co KG
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Publication date
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Publication of EP3851262A1 publication Critical patent/EP3851262A1/fr
Application granted granted Critical
Publication of EP3851262C0 publication Critical patent/EP3851262C0/fr
Publication of EP3851262B1 publication Critical patent/EP3851262B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • B28B1/266—Means for counteracting the pressure being applied on the slip or on the moulded article in the mould, e.g. means for clamping the moulds parts together in a frame-like structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/0275—Feeding a slurry or a ceramic slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds

Definitions

  • the invention relates to a device for die casting ceramic hollow bodies according to the features of the preamble of claim 1 and a method for producing ceramic hollow bodies by means of ceramic die casting according to the features of claim 12.
  • This known device consists of a multi-part die casting mold which has a lower part, an upper part and side parts which define the mold cavity or a cavity.
  • the slip infusion is fluidically connected to an annular slip distribution chamber which opens into the mold cavity and presses the slip into it. The pressure is maintained until the ceramic object is completely formed in the mold cavity. Then the mold is opened and the ceramic object is removed.
  • Such a device is only intended for one-off production, which means that large numbers cannot be produced.
  • slip is poured into a mold cavity or cavity formed by a mold.
  • the pressure build-up is achieved by dipping an inflatable hollow body element into the mold cavity.
  • the hollow body element is then balloon-shaped by a fluid pressure in the interior of the hollow body element Pressurization of the slip inflated with the mold closed.
  • the ceramic shards are formed, which can then be removed from the mold.
  • a system for die-casting ceramic articles is known, with several modules working cyclically one after the other each having at least one casting mold and each having at least one fluid cylinder with which the casting molds can be opened and closed.
  • the casting mold forms a cavity for a ceramic article.
  • the casting molds share a common slip supply and are controlled in such a way that the opening or closing times of no module overlap with the opening or closing time of one of the other modules. It is a cyclically serially operating device in which only one single article is completed per cycle.
  • the present invention is therefore based on the object of specifying a die-casting device and a method for producing ceramic hollow bodies which meet the increased requirements with regard to productivity and at the same time ensure a high quality of the ceramic hollow bodies.
  • the object is achieved according to the invention by a device for die casting ceramic hollow bodies having the features of claim 1. Furthermore, this object is achieved according to the invention by a method for producing ceramic hollow bodies according to the features of claim 12.
  • a device for die casting ceramic hollow bodies in particular ceramic bottles or hand formers, is proposed, with a frame on which at least two die casting molds are held each have at least two molded parts or three molded parts or four molded parts, at least two of the molded parts, in particular three of the molded parts, preferably all four molded parts, being movably mounted, with a drive to open or close molded parts of the at least two die casting molds, such as that the molded parts of a die casting mold form several cavities in the closed state, in particular form at least two cavities or four cavities or six cavities, and wherein a control device controls a slip conveying device in order to load all cavities of the at least two die casting molds with slip at the same time and after a predetermined period of time controls a valve or a compressed air delivery device in order to simultaneously blow out residual slip from all cavities by means of compressed air, so that a shard is formed in the cavities of all die casting molds at the same time.
  • the invention proposes a method for the production of ceramic hollow bodies, in particular ceramic bottles or hand formers, by means of ceramic die casting, at least two die casting molds being used, each of which has several relatively movable molded parts, in particular four relatively movable molded parts, which in the closed state Form at least two cavities, preferably form four cavities or form six cavities, with each die casting mold having at least one mounting plate for holding at least one molding, and with a mounting plate arranged between two die-casting molds on its front side a molding of the one die and on its rear side a molding of the another die casting mold, wherein all die casting molds can be opened and / or closed via a common drive by synchronously driving at least one of the mold parts of a die casting mold, wherein in al le cavities of the at least two die casting molds slip is introduced synchronously, and after a predetermined period of time liquid slip is blown out of the cavities by means of compressed air in order to simultaneously form a shard in the cavities of all die casting molds.
  • Ceramic bottles are understood to mean, in particular, ceramic hollow bodies which have a cavity for receiving liquids and a bottle neck for filling or pouring liquids.
  • the opening or the diameter of the bottle neck is smaller than the diameter of the cavity.
  • the ceramic bottles are preferably formed upside down in the die casting molds. That means that the bottom of the ceramic bottles faces upwards and the bottle necks downwards.
  • the ceramic bottles can be removed from the die-casting molds by gripping them on the bottom, for example by gripping the ceramic bottles in the area of their bottom and lifting the ceramic bottles upwards.
  • Hand formers are understood to mean, in particular, ceramic hollow bodies for the production of gloves, in particular latex gloves.
  • the hand shapers are preferably a three-dimensional image of a human hand.
  • Two-part or three-part die casting molds can be used to manufacture the hand formers.
  • the ceramic bottles are preferably formed in the die-casting molds in an upright position. That means the fingers point upwards and the wrist or the cut forearm points downwards.
  • the hand formers can be removed from the die casting molds in a standing position, for example by gripping the hand formers in the area of the cut forearm or the wrist and lowering the hand formers downwards.
  • a plurality of hollow ceramic bodies can be produced synchronously with the at least two die casting molds and the at least two cavities in each case.
  • the die casting molds and the cavities are preferably scalable. This means that significantly more than two die casting molds can also be provided.
  • An upper limit is defined by the available installation space in the longitudinal extension of the device. It is practicable to use die casting molds in the number of about 4 die casting dies to 15 die casting dies. In the case of the cavities, in particular the installation space available transversely to the longitudinal extension determines the number of cavities. The use of 4 to 12 cavities per die has proven to be practical. With appropriate space or with large or small ceramic hollow bodies, more or fewer than this practicable number of cavities or die casting molds are used.
  • the synchronous filling of the cavities and the synchronous removal of the cullet offer the advantage of identical process variables and parameters, which ensures a consistently high quality of the ceramic hollow bodies and reduces rejects. In this way, the requirement for large quantities can be met while maintaining the high quality of the ceramic hollow bodies.
  • the cavity is preferably completely filled with liquid slip. Due to the removal of water, the liquid slip begins to solidify on the outer contour of the cavity.
  • the removal of water is promoted, for example, by die-casting molds made of plaster of paris or porous plastic or other porous materials.
  • the solidified part of the slip is also known as cullet.
  • the dwell time of the body in the cavity depends on the shape and the desired edge thickness of the hollow body to be produced.
  • the slip pressure is a further influencing variable on the basis of which the person skilled in the art determines the formation of the body, in particular the wall thickness of the body.
  • the excess liquid slip is then blown out of the cavity by means of compressed air. No inserts are therefore required to form the shape of the ceramic hollow body, and the cycle time is reduced due to the blowing out of the liquid slip by means of compressed air.
  • a predetermined air pressure is maintained within the cavities for a certain time by compressed air in order to solidify the cullet located in the cavities. The further solidification of the body by means of compressed air ensures, among other things, that the body does not inadvertently deform after opening the die-casting mold.
  • the die casting molds can remain stationary during the filling and / or discharge of the slip or the solidification of the slip to form a body. Pivoting the die casting mold for distribution or removal of the slip is not necessary.
  • the slip is completely distributed by completely filling the cavities with slip, even with complex shapes.
  • a gripping device for demolding or removing the shards formed in the at least two die-casting molds.
  • the gripping device can preferably grasp and / or remove all of the shards formed in a die-casting mold at the same time.
  • the gripping device can simultaneously grip and / or remove all of the shards formed in the at least two die casting molds, in particular in all die casting molds.
  • this enables the broken pieces to be removed quickly from the die-casting molds and thus a high cycle rate and, on the other hand, the dwell time of all the broken pieces in the die-casting mold or on the gripping device is set to be the same length.
  • a gripping device is arranged on the frame for demolding the shards formed in the at least two die casting molds, which gripping device is designed for synchronous or simultaneous fixing or gripping of the shards.
  • the gripping device grips or fixes all the shards in the at least two die-casting molds synchronously, and a molded part fixing the shards is moved away by the drive when the die-casting molds are opened from the shards fixed in place by the gripping device.
  • the cullet after being removed from the die casting mold, to be fed to a drying system in which the cullet dry or harden partially or completely. The further drying or hardening of the cullet ensures that the cullet have sufficient strength to be transported or further processed, for example.
  • the die-casting device For onward transport, it is preferably possible for the die-casting device to have a conveyor belt to which the shards are transferred by means of the gripping device.
  • the conveyor belt can have holding devices in the form of bowls or shells which are adapted to the shape of the shards so that they can be safely transported on.
  • the shards can then be mechanically processed, for example by means of milling and / or drilling.
  • the mouthpiece is free of burrs.
  • a burr created by die casting can be removed by means of mechanical post-processing.
  • Printing and / or coating of the shards is preferably also provided.
  • the shards can be coated with a protective layer, in particular a transparent protective layer, which protects the ceramic hollow body from mechanical and / or physical and / or chemical environmental influences.
  • at least one layer of paint can be applied to the body by means of printing, whereby particularly optically high-quality ceramic hollow bodies can be produced.
  • molded parts of all die casting molds are opened synchronously for demolding and the shards are fixed by a gripping device in such a way that the molded parts holding the shards are moved away from the shards fixed in place by the gripping device.
  • the gripping device has a plurality of parallel gripping arms, each gripping arm being assigned to a die casting mold and a plurality of gripping tools being arranged on each gripping arm according to the number of cavities per die casting mold.
  • the gripping device it is advantageously also possible for the gripping device to fix the shards in the area of the floor by gripping them in each case by means of a gripping tool and / or in each case being sucked in via a suction tool.
  • a suction tool damage to the body by mechanical gripping is excluded. The risk of breakage is thus considerably reduced.
  • the gripping arms extend essentially perpendicular to the opening direction or closing direction of the at least two die casting molds.
  • gripping arms it is also possible for the gripping arms to be driven to be movable perpendicular to the opening direction or closing direction in order to transport away the cullet removed from the die casting molds.
  • the frame has a guide on which the at least two die casting molds and / or the four mold parts of the at least two die casting molds are movably mounted, in particular linearly displaceable in an opening direction and a closing direction, the guide being in the opening direction or closing direction extends continuously along all die casting molds.
  • the guide can preferably extend continuously from one end of the frame to its other end.
  • the guide is designed as a linear guide.
  • the die-casting molds are closed linearly along the guide by moving them against each other. Then the slurry is poured in with the die-casting molds closed.
  • the die casting molds are fixed in place, preferably fixed in place on the frame. In particular, the die casting molds remain closed during the solidification of the slip.
  • the die casting molds are opened along the guide in the opening direction, that is, against the closing direction.
  • the die casting molds can be opened and closed by means of a linear drive, preferably a lifting cylinder or a hydraulic cylinder or a pneumatic cylinder.
  • a linear drive preferably a lifting cylinder or a hydraulic cylinder or a pneumatic cylinder.
  • the linear drive or the lifting cylinder or the hydraulic cylinder or the pneumatic cylinder during the To solidify the slip apply pressure in the closing direction to the die casting molds in order to fix them in place and / or to keep them closed.
  • An additional locking of the die casting molds can thus be omitted.
  • the guide ensures a straight and / or precisely fitting opening and closing of the molded parts of the die casting molds.
  • the shape of the cavity always remains the same and there are no unwanted edges that are caused, for example, by incorrectly fitting the molded parts.
  • the molded parts are movably mounted on the guide, the molded parts are opened essentially in a straight line.
  • the molded parts are preferably opened without play in a direction perpendicular to the opening or closing direction. This avoids transverse forces acting on the body that are caused by a movement of the molded parts perpendicular to the opening or closing direction.
  • the guide it is also possible for the guide to have a straight guide support or a straight guide rail or a straight guide rod.
  • the guide holds the die-casting molds on the frame in a linearly displaceable manner along an opening direction and / or a closing direction.
  • the at least two die casting molds are arranged in a straight line one behind the other in the opening direction or closing direction along the guide.
  • the multiple die casting molds form a horizontally aligned stack, so to speak, along the guide.
  • several die casting molds in particular two or three or four or five or six or eight or ten or more die casting molds, can form a stack that is mounted on the guide so as to be linearly movable.
  • the die-casting molds of the stack are opened and / or closed synchronously.
  • the guide it is possible for the guide to be arranged above and / or below the at least two die casting molds.
  • the guide can have a guide support arranged above the at least two die casting molds and a guide support arranged below the at least two die casting molds.
  • the two guide supports run parallel to one another.
  • the at least two die casting molds each have at least one mounting plate for holding molded parts.
  • the clamping plate can be mounted on the guide or the guide support so as to be linearly displaceable.
  • the clamping plate serves as a mechanically stable platform.
  • the clamping plate holds at least one molded part of a die-casting mold, in particular in that it is or are attached to the front and / or the rear of the clamping mold.
  • the clamping plates preferably extend transversely to the opening and closing direction of the die casting molds and over the entire width of a die casting mold or several die casting molds arranged next to one another on the clamping plate.
  • a mounting plate to be arranged between two die casting molds, which carries a molded part of the first die casting mold on its front side and a molded part of the other die casting mold on its rear side.
  • the mold parts arranged on the front side and the rear side are arranged at the same height on the clamping plate arranged between two die casting molds, preferably that the cavities of these molded parts arranged on the front and rear face in opposite directions .
  • clamping plates are mounted on the guide.
  • all of the clamping plates can be mounted on the guide so as to be movable, in particular linearly displaceable, in the opening direction and closing direction.
  • one of the clamping plates is fixed in place on the guide and / or the frame, and that the other clamping plates, in particular all other clamping plates, are slidably mounted on the guide.
  • the fact that the clamping plates are guided along the guide ensures that the individual molded parts close precisely and thus always form the same cavity.
  • the cavities of a die casting mold preferably the cavities of each of the at least two die casting molds, are preferably arranged next to one another in a direction transverse to the opening direction or closing direction.
  • the die casting molds can be opened and / or closed via a drive.
  • the drive is preferably mounted or fastened to the frame and drives several of the die casting molds, preferably all die casting molds, in a straight line along the guide in order to open it in one opening direction and to close it in the opposite closing direction.
  • the die casting molds can be locked against one another via a locking device in order to prevent unintentional opening when pressure is applied to the die casting molds.
  • the drive locks the die casting molds in the closed position, so that no additional locking device is required. It is preferably possible for the drive to open the at least two die casting molds, in particular all die casting molds, synchronously and / or to close them synchronously, preferably by the drive pulling the at least two die casting molds apart in the opening direction, in particular in a straight line, and in an opposite closing direction, in particular in a straight line, moved towards each other.
  • the straight opening of the die-casting molds ensures that no transverse forces or shear forces act on the body, which could unintentionally deform it or even lead to breakage of the body.
  • the drive is preferably designed as a linear drive, in particular a linear drive with a hydraulic cylinder, or as a linear drive with a compressed air cylinder, or as a linear drive with an electric spindle drive.
  • a die casting mold has a plurality of molded parts, in particular three molded parts or four molded parts or five molded parts or more. In the closed position, these molded parts form the cavity or the multiple cavities of a die casting mold. In the case of a die casting mold with three molded parts, these can be designed as a cover or base or foot part and two side parts. In the case of four molded parts, these can be designed as a cover and as a base or foot part and two side parts. In the case of five or more molded parts, for example, the cover or the base or a side part can be made up of several parts in order to form more complex shapes of hollow bodies.
  • synchronous opening or synchronous closing of the die casting molds can mean that the opening or closing takes place synchronously between the same or similar molded parts. That is, for example, the side parts can open and / or close synchronously, or the cover parts can open and / or close synchronously, or the base parts or foot parts can open and / or close synchronously.
  • all mold parts of the die casting molds can also open and / or close synchronously.
  • the side parts of the die casting molds are coupled to one another and opened and / or closed by a single drive.
  • the cover parts or the base parts each have their own drive in order to move them vertically, in particular to open and / or close them.
  • These cover drives or Bottom drives can be electronically coupled in order to enable the cover parts and / or bottom parts to be opened and closed synchronously.
  • a die casting mold has four mold parts, each of which comprises two side parts, a foot part and a cover part.
  • slip and / or compressed air can be introduced into a cavity of the die casting mold through the foot part and / or through the cover part.
  • the injection of the slip is assisted by gravity, as a result of which the injection time can be further shortened.
  • all of the shards are released synchronously from their die-casting mold by means of an ejection of compressed air.
  • the molded parts of all die casting molds holding the shards are moved away from the shards synchronously at the same time as the blast of compressed air or after the blast of compressed air.
  • the shards can remain in the same molded part of the die-casting molds when they are removed from the mold and are fixed there by the gripping device.
  • the die-casting device according to the invention is particularly suitable for the mass production of ceramic hollow bodies, such as, for example, drinking bottles, cups, or other drinking vessels or hand shapers.
  • ceramic hollow bodies such as, for example, drinking bottles, cups, or other drinking vessels or hand shapers.
  • Such a die-casting device according to the invention, or a method according to the invention for the production of ceramic hollow bodies offers considerable economic advantages, in the increased number of pieces and in a reduction in production costs accumulate. Due to the constant process parameters and process variables, a consistently high quality of the ceramic hollow bodies is achieved.
  • Figure 1 shows a device for die casting 1 ceramic hollow body, this essentially comprising a frame 4, a drive 5 and a gripping device 3.
  • the frame 4 comprises four posts 411, 412, 413, 414, which are preferably anchored to the ground and with side walls 431, 432 being held opposite one another on the posts.
  • the side walls 431, 432 in turn hold the first guide rail 421 and the second guide rail 422.
  • the two guide rails 421, 422 are preferably arranged parallel to one another and serve as guides 421, 422 for the die casting molds 2.
  • the gripping device 3 is perpendicular to at least one guide rail 421 , 422 arranged.
  • the six die casting molds 2 present in this embodiment are mounted movably along at least one guide rail 421, 422.
  • the device for die casting 1 further comprises a drive 5, the drive 5 opening and / or closing the at least two die casting molds 2, in particular all die casting dies 2, synchronously, preferably by the drive pulling the at least two die casting dies 2 apart in the opening direction, in particular in a straight line , and moved towards one another in an opposite closing direction, in particular in a straight line.
  • the drive comprises a hydraulic cylinder 51 and a stamp 52. It is also possible for the drive 5 to be designed as a linear drive, in particular a linear drive with a hydraulic cylinder 51, or as a linear drive with a compressed air cylinder or as a linear drive with an electric spindle drive is.
  • a control device 15 controls a slip conveying device 13 in order to feed all cavities 27 of the at least two die casting molds 2 with slip at the same time.
  • the control device 15 can then set a specific, in particular preselectable, slip pressure and hold it for a specific period of time.
  • the control device 15 can control a plurality of pressure levels, ie it can provide a plurality of time periods in which each time is different There is slip pressure. After a predetermined period of time or after the end of the slip pressure phase, the control device 15 lowers the slip pressure to zero or ambient pressure.
  • the control device 15 can then control a valve or a compressed air delivery device 14 in order to simultaneously blow out residual slip from all cavities by means of compressed air, in particular with a defined blow-out pressure.
  • the control device 15 controls the filling and the slip pressure phase and the blowing out of the slip for all die casting molds at the same time, that is to say synchronously, so that a body 9 is formed at the same time in the cavities 27 of all die casting molds 2.
  • the die-casting device 1 shown can also be used for a method for the production of ceramic hollow bodies, in particular ceramic bottles 9, by means of ceramic die-casting, several die-casting molds 2 being used, each of which has a plurality of molded parts 21, 22, 23, 24, in particular four, that are movable relative to one another mold parts 21, 22, 23, 24 movable relative to one another, which in the closed state form at least two cavities 27, preferably form four cavities 27, or form six cavities 27, with each die casting mold 2 at least one clamping plate 25 for holding at least one molded part 21 , 22, 23, 24, and wherein a clamping plate 26 arranged between two die casting molds 2 has a shaped part 21, 22, 23, 24 of one die casting mold on its front side and a shaped part 21, 22, 23, 24 of the other die casting die 2 on its rear side holds, with all die casting molds 2 via a common drive 5 by synchronous Ant rub at least one of the mold parts 21, 22, 23, 24 of a die casting mold 2 can be opened and / or closed, with slip being introduced
  • FIG. 2 Another three-dimensional representation of a die-casting device 1 is shown, the details of the gripping device 3 and the conveyor belt 11 being particularly evident here. It is provided in particular that for demolding the shards 9 formed in the at least two die casting molds 2 A gripping device 3 is arranged on the frame 4 and is designed for fixing or gripping the shards 9.
  • the gripping device 3 comprises a trolley 31 which is movably mounted along guides so that the trolley can be moved in a translatory manner perpendicular to the opening and closing direction of the casting molds.
  • the trolley 31 is preferably driven by a linear motor or servo motor or pneumatically or hydraulically.
  • a gripping column 34 is preferably held on the trolley, which in turn holds the gripping arms 321, 322, 323, 324 via a gripping rail 33.
  • the gripping device 3 has several parallel gripping arms 321, 322, 323, 324, each gripping arm 321, 322, 323, 324 being assigned to a die casting mold.
  • a plurality of gripping tools corresponding to the number of cavities 27 per die casting mold 2 are arranged on each gripping arm.
  • the die casting molds 2 have a plurality of cavities 27 which are arranged next to one another in a straight line.
  • the gripping arms 321, 322, 323, 324 extend essentially perpendicular to the opening direction or closing direction of the at least two die casting molds 2.
  • the gripping arms 321, 322, 323, 324 are driven to be movable perpendicular to the opening direction or closing direction in order to transport away the cullet 9 removed from the die casting molds 9.
  • the gripping device 3 grips or fixes all the shards 9 in the at least two die-casting molds 2 synchronously, and a molded part 21 fixing the shards is moved away by the drive 5 when the die-casting molds 2 are opened from the shards 9 fixed in place by the gripping device 3 .
  • the shards 9 are fed to a drying station 12 in order to use them there for the further processing and / or further transport to completely and / or partially dry or cure.
  • the conveyor belt 11 has holding devices adapted in particular to the shape of the cullet 9, so that the cullet 9 can be safely transported onward. It is also possible for the drying and / or hardening step to be omitted or to be carried out at a later point in time.
  • the conveyor belt 11 feeds the cullet 9 to further systems on which post-treatment of the cullet 9 is carried out.
  • glazing and / or printing of the body can take place, in particular with a protective layer, preferably a transparent protective layer, being applied that protects the body 9 from mechanical and / or physical and / or chemical environmental influences.
  • a protective layer preferably a transparent protective layer, being applied that protects the body 9 from mechanical and / or physical and / or chemical environmental influences.
  • the body 9 to be colored so that individual ceramic products can be produced which produce a particularly high-quality optical impression.
  • the body 9 is reworked by means of mechanical forming processes, such as milling and / or drilling, for example, in order to remove a burr or to form a bottle cap or bottle neck, for example.
  • mechanical forming processes such as milling and / or drilling, for example, in order to remove a burr or to form a bottle cap or bottle neck, for example.
  • the mouth parts are free of burrs so that the user cannot be injured by protruding burrs.
  • FIG. 13 shows a plan view of a die-casting device 1, the structure being identical to that of FIG Figure 1 and Figure 2 Die casting device 1 shown is.
  • the drying station 12 and the conveyor belt 11 are arranged parallel and in the immediate vicinity of the die-casting apparatus. Due to this compact design, the cycle times can be reduced due to the short travels of the gripping device 3, which in turn results in a higher number of items.
  • FIG. 4 a front view of a die-casting device 1 is shown, the structure being identical to that of FIGS Figures 1 to 3 is.
  • the frame 4 preferably has a guide 421, 422 on which at least two die casting molds 2 and / or the four mold parts 21, 22, 23, 24 of the at least two die casting molds 2 are movably mounted.
  • the guide 421, 422 preferably extends continuously in the opening or closing direction along all die casting molds 2, preferably so that the guide 421, 422 extends continuously from one end of the frame 4 to its other end.
  • the guide 421, 422 has a straight guide support or a straight guide rail or a straight guide rod.
  • All die casting molds 2 are arranged in a straight line one behind the other in the opening direction or closing direction along the guide 421, 422.
  • the guide 421, 422 is arranged on the frame above the at least two die casting molds 2.
  • the guide 421, 422 can also be arranged below the die casting molds 2.
  • the die casting molds 2 are connected to the guide 421, 422 via clamping plates 25, 26.
  • each die casting mold 2 has two clamping plates 25, 26 which are arranged at a distance from one another.
  • the die casting mold 2 is arranged or held between these two clamping plates 25, 26.
  • the die casting molds 2 are arranged one behind the other in a linear fashion and form, so to speak, a horizontally running stack. It is therefore provided that the two of the die casting molds 2 each have a common clamping plate 25, 26, in that a clamping plate 26 is arranged between the two die casting molds 2, which carries a molded part 21, 22, 23, 24 of one die casting mold 2 on its front side and a molded part 21, 22, 23, 24 of the other die casting mold 2 on its rear side.
  • the mold parts 21, 22, 23, 24 arranged on the front side and on the rear side are each arranged at the same height on the clamping plate 25, 26 arranged between the two die casting molds 2.
  • the cavities 27 of these molded parts 21, 22, 23, 24 arranged on the front side and on the rear side point in opposite directions.
  • the clamping plates 25, 26 are movably mounted on the guide 421, 422.
  • One of the clamping plates 25 is fixedly attached to the guide 421, 422 and / or the frame 4 and the other clamping plates 26, in particular all of the other clamping plates 26, are slidably mounted on the guide 421, 422.
  • all of the clamping plates 25, 26 can be slidably mounted on the guide 421, 422.
  • the die casting molds 2 shown have the respective outer die casting molds 2 on their outside an end-side clamping plate 25.
  • the clamping plate 25 at the end is movably connected to the punch 52 of the drive 5. This enables all die casting molds 2 to be opened and closed.
  • the clamping plate 25 at the end is rigidly connected to the frame 4.
  • a die casting mold 2 has four mold parts 21, 22, 23, 24 each, which each comprise two side parts 21, 22, a foot part 23 and a cover part 24.
  • the die-casting molds 2 are in the closed state.
  • the punch 52 of the drive 5 is extended and thus presses the individual die casting molds 2 together.
  • each die casting mold 2 has at least one slip conveying device 13, as a result of which the slip is injected into the cavity 27 of the die casting mold 2 or flows into the cavity 27.
  • the die casting molds 2 share a common slip conveying device 13 or have a common feed line via which the liquid slip is injected into the respective die casting molds 2.
  • the slip conveying device 13 fills the die casting molds 2 from above. This has the advantage that the injection of the liquid slip is supported by gravity and the injection time is thus reduced.
  • the liquid slip is injected into the die casting mold 2 under pressure, which is preferably generated by a pump.
  • the slip conveying device 13 is arranged below the die casting molds 2.
  • slip and / or compressed air can be introduced into a cavity 27 of the die casting mold 2 through the foot part 23 or through the cover part 24.
  • a predetermined air pressure is maintained within the cavities 27 for a certain time by means of compressed air in order to solidify the cullet 9 located in the cavities 27.
  • the die casting molds 2 are in the open state.
  • the die casting molds 2 were opened by means of the drive 5.
  • the drive 5 is mounted on the frame 4 and drives several of the die casting molds 2, preferably all of the die casting dies 2, along the guide 421, 422 in order to open them in one opening direction and to close them in the opposite closing direction.
  • the shards 9 each remain in the same molded part 21 of the die casting molds 2 when they are removed from the mold and are fixed there by the gripping device 3.
  • the gripping device 3 fixes the shards 9 in the area of the floor by gripping them by means of a gripping tool and / or by sucking them in with a suction tool.
  • the shards 9 are then, as in Figure 7 to see, demolded from the molded part 21 fixing the shards 9 and removed from the die-casting mold 2. It is provided here that for demolding the mold parts 21, 22, 23, 24 of all die casting molds 2 are opened synchronously, ie at the same time, and the shards 9 are fixed by a gripping device 3, so that the mold parts holding the shards 9 are removed from the the gripping device 3 fixed shards 9 are moved away. In order to support the demolding, it is also possible for all the shards 9 to be released synchronously from their die casting mold 2 by means of an ejection of compressed air during demolding.
  • the molded parts 21 of all die casting molds 2 holding the shards 9 can be moved away from the shards 9 synchronously either at the same time as the compressed air blast or after the compressed air blast, in order to release the shards from the molded parts.
  • each of the die casting molds 2 has four cavities 27 each.
  • the cavities 27 of a die casting mold 2, preferably the cavities 27 of each of the at least two die casting dies 2, are arranged next to one another in a direction transverse to the opening direction or closing direction.
  • FIG 9 a further representation of the die casting molds 2 is shown enlarged.
  • the cover part 24 is rigidly connected to the slip conveyor device 13. This has the advantage that each time the cavity 27 is filled, the slip always flows into the cavity 27 via the same opening, which ensures a constant quality of the ceramic hollow bodies.
  • the foot part 23 or the side part 21 or the side part 22 can be rigidly connected to the slip conveying device 13.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP21150543.3A 2020-01-10 2021-01-07 Coulée sous pression de batterie pour corps creux en céramique Active EP3851262B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020100414.1A DE102020100414A1 (de) 2020-01-10 2020-01-10 Batteriedruckguss für keramische Hohlkörper

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EP3851262C0 EP3851262C0 (fr) 2024-02-07
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3915744A3 (fr) * 2020-05-28 2022-01-19 Lippert GmbH & Co. KG Coulée sous pression à batterie du corps creux en céramique
DE102023101264A1 (de) 2023-01-19 2024-07-25 Fuco-Heg Maschinenbau Gmbh Gussformadapter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021132136A1 (de) 2021-12-07 2023-06-07 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren und Vorrichtung zur Herstellung keramischer Faserkomposite mit variabler Geometrie
CN114905608B (zh) * 2022-05-31 2023-11-14 江苏欧亿德新材料科技有限公司 一种安全性强的耐火材料压铸装置

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DE19520234C1 (de) * 1995-06-01 1996-07-18 Netzsch Erich Holding Anlage zum Druckgießen keramischer Artikel
US5611980A (en) * 1994-06-08 1997-03-18 Toto Ltd. Apparatus and method for slip casting
DE19745232C1 (de) 1997-10-13 1998-12-24 Thuringia Netzsch Feinkeramik Anlage zum Druckgießen keramischer Artikel
EP0999021A2 (fr) * 1998-11-06 2000-05-10 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Installation en ligne pour le coulage sous pression d'articles sanitaires et moules utilisés dans l'installation
DE102005002254B3 (de) 2005-01-18 2006-08-10 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Vorrichtung zur Herstellung von druckgepressten keramischen Gegenständen
EP1399304B1 (fr) 2001-06-22 2008-09-24 Josef Wagner Procede et dispositif de coulee en barbotine sous pression
CN207373422U (zh) * 2017-10-19 2018-05-18 佛山市鸣门卫浴家居有限公司 一种用于马桶高压注浆成型的生产线

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US4591472A (en) * 1982-03-17 1986-05-27 Keramik Holding Ag Laufen Process for the preparation of blanks
GB9205838D0 (en) * 1992-03-18 1992-04-29 British Ceramic Res Ltd Moulding apparatus
DE19539270C2 (de) * 1995-10-21 1999-02-11 Netzsch Erich Holding Schlickerdruckgießanlage
DE10148307A1 (de) * 2001-09-29 2003-04-24 Keramag Keramische Werke Ag Verfahren sowie Einrichtung zum Hohlgießen von keramischen Rohlingen, insbesondere zur Endverwertung im Sanitärbereich
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Publication number Priority date Publication date Assignee Title
GB1588595A (en) * 1977-08-24 1981-04-29 Ideal Standard Casting installations
JPH07332510A (ja) * 1994-06-08 1995-12-22 Toto Ltd 流体用バルブ装置
US5611980A (en) * 1994-06-08 1997-03-18 Toto Ltd. Apparatus and method for slip casting
DE19520234C1 (de) * 1995-06-01 1996-07-18 Netzsch Erich Holding Anlage zum Druckgießen keramischer Artikel
DE19745232C1 (de) 1997-10-13 1998-12-24 Thuringia Netzsch Feinkeramik Anlage zum Druckgießen keramischer Artikel
EP0999021A2 (fr) * 1998-11-06 2000-05-10 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Installation en ligne pour le coulage sous pression d'articles sanitaires et moules utilisés dans l'installation
EP1399304B1 (fr) 2001-06-22 2008-09-24 Josef Wagner Procede et dispositif de coulee en barbotine sous pression
DE102005002254B3 (de) 2005-01-18 2006-08-10 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Vorrichtung zur Herstellung von druckgepressten keramischen Gegenständen
CN207373422U (zh) * 2017-10-19 2018-05-18 佛山市鸣门卫浴家居有限公司 一种用于马桶高压注浆成型的生产线

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3915744A3 (fr) * 2020-05-28 2022-01-19 Lippert GmbH & Co. KG Coulée sous pression à batterie du corps creux en céramique
DE102023101264A1 (de) 2023-01-19 2024-07-25 Fuco-Heg Maschinenbau Gmbh Gussformadapter

Also Published As

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DE102020100414A1 (de) 2021-07-15
EP3851262C0 (fr) 2024-02-07
EP3851262B1 (fr) 2024-02-07

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