EP0411960A2 - Schlickerdruckgiessvorrichtung zum Herstellen von Sanitärartikeln - Google Patents

Schlickerdruckgiessvorrichtung zum Herstellen von Sanitärartikeln Download PDF

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Publication number
EP0411960A2
EP0411960A2 EP90308576A EP90308576A EP0411960A2 EP 0411960 A2 EP0411960 A2 EP 0411960A2 EP 90308576 A EP90308576 A EP 90308576A EP 90308576 A EP90308576 A EP 90308576A EP 0411960 A2 EP0411960 A2 EP 0411960A2
Authority
EP
European Patent Office
Prior art keywords
mould
mould part
devices
parts
mould parts
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
EP90308576A
Other languages
English (en)
French (fr)
Other versions
EP0411960A3 (en
EP0411960B1 (de
Inventor
Masanobu Hisaeda
Satoru Saitou
Masahiro Ogata
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.)
Toto Ltd
Original Assignee
Toto Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toto Ltd filed Critical Toto Ltd
Publication of EP0411960A2 publication Critical patent/EP0411960A2/de
Publication of EP0411960A3 publication Critical patent/EP0411960A3/en
Application granted granted Critical
Publication of EP0411960B1 publication Critical patent/EP0411960B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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

Definitions

  • the present invention relates to a pressure slip casting apparatus for producing sanitary ware, for example a toilet bowl.
  • the mould has to be strong enough to withstand the high moulding pressure.
  • Such high strength or rigidity can be realized by backing up the porous resin with a backup member supported in a steel frame. In such a case, however, the weight of the mould is increased to undesirably hamper the handling of the mould.
  • EP-A-0211653 discloses a pressure slip casting apparatus which comprises an upper mould part, a lower mould part and a pair of side mould parts which are connected to respective rams. After moulding, rams connected to the upper and lower mould parts are retracted to move upwardly and downwardly the upper mould part and the lower mould part, respectively thereby separating the moulded article from the upper and lower mould parts. Subsequently, a trolley with a liftable table is introduced into the casting apparatus and the liftable table is lifted to a level at which the table is just going to contact the lower surface of the moulded article. Then, the rams connected to both side mould parts are retracted to move the side mould parts away from each other to release the moulded article, whereby the moulded article is placed on the table.
  • the present invention provides a pressure slip casting apparatus for producing sanitary ware comprising: a stationary frame including a base, side posts and a top member; a mould having a bottom mould part, a core mould part and a pair of side mould parts each being formed of a porous body with internal passages; lifting means secured to the top member of the stationary frame; a pair of suspending devices supported by a plate attached to the lifting means; an interlocking mechanism for operatively connecting the suspending devices to each other; and a device for moving the suspending devices towards and away from each other through the action of the interlocking mechanism; the bottom mould part and the core mould part being attached to the base of the stationary frame and to the lower surface of the plate, respectively, the side mould parts being suspended by the suspending devices so as to brought and aligned together when the suspending devices are moved towards each other, the core mould part and the side mould parts in assembled state being adapted to be lowered by the lifting means so that the side mould parts and the core mould parts are sequentially assembled with the bottom mould part and then clampe
  • the operation of the clamping devices is terminated and the core mould part is raised apart from the side mould parts by the operation of the lifting means.
  • the suspending devices are raised to lift the side mould parts away from the bottom mould parts so that the moulded article is lifted while being retained between the side mould parts.
  • the trolley is moved into the casting apparatus and set underneath the moulded article.
  • the suspending devices are moved away from each other so as to release the side mould parts from the moulded article, whereby the moulded article is placed on the trolley.
  • a pressure slip casting apparatus for forming a sanitary ware, for example a toilet bowl, has a stationary frame 4 including a base 1, side posts 2 and a top member 3.
  • Lifting hydraulic cylinder devices 5 are fixed to the top member 3 of the frame 4 so as to be situated on the vertical central plane of the frame 4.
  • Each of the lifting hydraulic cylinder devices 5 has a piston 7 which is provided with a supporting plate 6 fixed to the lower end thereof.
  • Travelling guide rails 8 are provided on the front and rear ends of the supporting plate 6.
  • Left and right suspending devices 9 are provided on both sides of the hydraulic lifting cylinder devices 5 and have wheels 10 by means of which these suspending devices travel along the travelling guides 8.
  • Each suspension device 9 has a pair of suspension frames 12 arranged at front and rear sides of the device 9 and connected to each other through a connecting member 11.
  • Figures 4 and 5 show a hydraulic cylinder device 13 which is fixed to the upper side of the supporting plate 6 and has a piston 14 which is connected to the connecting member 11 of one of the suspending devices 9. Extension of the piston 14 causes this suspending device 9 to move along the travelling guides 8.
  • an interlocking mechanism which is adapted to cause movement of the other suspending device 9 in a direction different from that of the movement of the first-mentioned suspending device 9.
  • the interlocking mechanism includes sprocket wheels 15 rotatably mounted on both ends of the travelling guides 8, and chains 16 having one end secured to one of the suspending devices 9 and the other end secured to the other suspending device, the chains 16 passing around the sprocket wheels 15.
  • the pair of suspending devices 9 are connected to each other through a pair of chains 16.
  • the hydraulic cylinder device 13 When the hydraulic cylinder device 13 is operated to retract its piston 14, the suspending device 9 connected to this piston 14 is moved towards the center of the moulding apparatus. Consequently, one of the chains 16 moves around the sprocket wheels 15 clockwise as viewed in Figure 1 so as to cause the other suspending device 9 to move towards the center of the apparatus by the same amount as that of the movement of the first-mentioned suspending device 9.
  • the piston 14 is extended to displace the associated suspending device 9 outward of the apparatus, the other of the chains 16 moves Counterclockwise around the sprocket wheels 15, so that the other suspending device 9 also moves outwardly of the apparatus by the same amount.
  • the casting apparatus has a mould which includes a bottom mould part 17 fixed to the center of the base 1 of the stationary frame 4, a core mould part 18 stationarily fixed to the lower surface of the supporting plate 6, and a pair of side mould parts 19 which are suspended by the respective suspending devices 9 and spaced by a predetermined distance from the core mould part 18.
  • the suspension of each side mould part 19 from the associated suspending device 9 is realized by engagement between projections 20 projecting from the front and rear ends of the side mould part 19 and hooks 21 provided on the lower ends of the suspending frames 12.
  • the bottom mould part 17 includes a reinforcing steel frame 22, a continuous-pore type porous body 24 having internal hollow passages 23, and a backup member 25 supported in the reinforcing steel frame 22 so as to support the porous body 24.
  • a sealing resin layer 26 is interposed between the porous body 24 and the backup member 25 so as to seal the porous body 24.
  • Means for clamping the side mould parts 19 includes a pair of hydraulic presses 27 which are provided on the base portion of each post 2 of the stationary frame 4. Obviously, screw-type presses can be substituted for the hydraulic presses.
  • a slip supply pipe 28 connected to a source (not shown) of slip and a slip discharge pipe 29 are connected to a charging opening 30 formed in the bottom mould part 17. These pipes 28 and 29 are respectively provided with a supply valve 31 and a discharge valve 32.
  • a slip stop valve 33 is provided in the slip supply pipe 28 at a position upstream of the supply valve 31.
  • a slip pressurizing device 34 is connected to a portion of the slip supply pipe 28 between the valves 31 and 33.
  • the slip pressurizing device 34 comprises an expandable pressurizing vessel 35 formed from a rubber bellows and a hydraulic cylinder 36 for expanding and contracting the pressurizing vessel 35. It is of course possible to use other suitable slip pressurizing devices.
  • the casting apparatus is provided with a support pedestal 37 adjacent to the base 1 of the stationary frame 4.
  • a pair of rails 38 are laid on the base 1 of the stationary frame 4 and the supporting pedestal 37 along both lateral sides of the bottom mould part 17.
  • a trolley 39 is so constructed as to straddle the bottom mould part 17 and has wheels which travel on the rails 38 so that the trolley 39 is movable between the support pedestal 37 and the base 1.
  • FIG. 7 shows another casting apparatus.
  • This apparatus is substantially the same as the previously described one except that a plugging mould part 41 is disposed on the end of the apparatus opposite to the support pedestal 37.
  • the plugging mould part 41 is secured to the piston of a hydraulic cylinder device 43 mounted on a support frame 42, and forms a part of the mould.
  • both suspending devices 9 are moved along the travelling rails 8 towards the center of the apparatus by the operation of the chains 16 so that the side mould parts 19 which are suspended from the suspending devices 9, are brought together at the central vertical plane of the apparatus.
  • the lifting hydraulic cylinder devices 5 are operated to extend the pistons 7 so that the core mould part 18 and the side mould parts 19 are lowered towards the bottom mould part 17.
  • the stop valve 33 and the supply valve 31 of the slip supply pipe 28, as well as the discharge valve 32 of the slip discharge pipe 29, are opened so that a new batch of slip is supplied from the slip source so that the old slurry stagnant in the slip system is replaced with fresh slip.
  • the discharge valve 32 is closed and the slip is charged into the cavity in the mould through the slip charging opening 30 in the bottom mould part 17 so as to fill the mould cavity with the slip.
  • slip is allowed to flow into the pressurizing vessel 35 of the slip pressurizing device 34 communicating with the slip supply pipe 28.
  • the slip pressurizing device 34 is actuated to extend its piston so as to apply a predetermined pressure to the slip in the pressurizing vessel 35 for a predetermined time.
  • the water in the slip is forced into the pores of the porous bodies 24 of the mould and discharged outside the mould through the internal passages 23, whereby a moulded article is deposited on the surfaces of the mould cavity presented by the porous bodies 24.
  • the pressure in the internal passages 23 may be actively reduced to promote the movement of the water into the mould parts.
  • the supply valve 31 is closed and the operation of the hydraulic cylinder devices 5 is stopped. Then, the discharge valve 32 is opened and a valve 45 in an air line is opened so that compressed air is supplied into the mould cavity, whereby surplus slip in the mould is discharged through the slip discharge pipe 29. As shown in Figure 8, the valve 45 is provided in an air line 44 which is connected to a source of compressed air (not shown) and which communicates with the mould cavity.
  • the discharge valve 32 and the valve 45 are closed and a valve 46 in the air line 44 is opened so that pressurized air is supplied into the mould cavity for a predetermined time to promote the movement of the water in the moulded article 48 into the porous bodies, until the moulded article becomes rigid enough to permit the separation.
  • the valve 46 is closed and the slip valve 32 is opened to allow the mould cavity to communicate with the atmosphere.
  • a check valve 47 is provided in the air line 44 between the valves 45 and 46 and the mould parts 17, 18 and 19 to prevent slip from flowing back into the valves 45 and 46.
  • the clamping force is released by relieving the hydraulic pressure in the lifting hydraulic cylinder devices 5 and the hydraulic presses 27 and also in the hydraulic cylinder 43 for the plugging mould part 41 in the apparatus shown in Figure 7. Then, compressed air is supplied from the exterior through the internal passages 23 into the plugging mould part 41 so that the water in the porous bodies 24 is forced back to the boundary between the moulded article and the surfaces of the mould cavity, thus forming a water film along the boundary to facilitate release of the moulded article 48 from the mould part. Then, the hydraulic cylinder 43 is retracted to separate the plugging mould part 41.
  • the hydraulic presses 27 are completely extracted and compressed air is introduced from the exterior through the internal passages 23 into the core mould part 18 so that the water in the porous body 24 is forced back to the boundary between the moulded article and the mould cavity surface, thereby forming a water film along this boundary to facilitate release of the moulded article from the mould part.
  • the lifting hydraulic cylinder devices 5 are then actuated to lift up the core mould part 18, while raising the suspending devices 9. In this state, however, the side mould parts 19 have not been suspended yet by the suspending devices 9.
  • the retracting motion of the lifting hydraulic cylinder devices 5 is temporarily stopped at a moment immediately prior to the lifting of the side mould parts 19 by the suspending devices 9, and compressed air is supplied from the exterior through the hollow passages 23 into the bottom mould part 17 so as to force the water in the porous body 24 back to the boundary between the moulded article 48 and the surface of the bottom mould part, thus forming a water film thereby facilitating the separation of the moulded article from the bottom mould part.
  • the retracting operation of the lifting hydraulic cylinder devices 5 is re-commenced to raise the suspending devices 9 so that the side mould parts 19 with the moulded article 48 are suspended by the suspending devices 9 so as to be moved upward apart from the bottom mould part 17 thus separating the moulded article from the bottom mould part 17.
  • the trolley 39 carrying a support plate 47 is moved into the moulding apparatus.
  • the lifting hydraulic cylinder devices 5 operate again to lower the side mould parts 19 until the bottom surface of the moulded article 48, still clamped between the side mould parts 19, just contacts the supporting plate 47, for example, to a level at which the bottom surface of the moulded article is about 1 to 2mm above the surface of the supporting plate 47. Then, compressed air is supplied from the exterior through the internal passages 23 into the side mould parts 19 so that the water in the porous bodies 24 is moved to the boundaries between both side mould parts and the moulded article 48 so as to form water films in these boundaries, thus facilitating the separation.
  • Aligning and releasing of the side mould parts is effected by a single hydraulic cylinder device mounted on a support plate carried by lifting hydraulic cylinder means, while the clamping of the side mould parts is conducted by stationary clamping devices.
  • the stroke of the clamping devices can be reduced to enable the apparatus to have a compact design.
  • the side mould parts are suspended from a supporting plate through suspending devices which are movable laterally towards and away from each other, replacement of the mould parts and adjustment of the mould parts for alignment are facilitated.
  • the mould assembling and separation of the core mould part and the bottom mould part can be effected only by the lifting hydraulic cylinder devices, the mould assembling and releasing operations are simplified to shorten the time required for the releasing of the mould.
  • the bottom mould part is fixed to the base of the stationary frame while the oore mould part and the side mould parts in assembled state are moved up and down between the clamping devices by the operation of the lifting hydraulic cylinder devices, and the trolley is moved into and out of the moulding apparatus while the core mould part and the side mould parts are in the raised positions.
  • both side mould parts are brought into alignment with each other and moved apart from each other by the operation of a single hydraulic cylinder device through the action of the interlocking mechanism, both side mould parts are moved strictly at the same speed in synchronization with each other, whereby the assembly of the side mould parts and separation of these mould parts from the moulded article can be conducted smoothly.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Document Processing Apparatus (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
EP90308576A 1989-08-03 1990-08-03 Schlickerdruckgiessvorrichtung zum Herstellen von Sanitärartikeln Expired - Lifetime EP0411960B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1201789A JPH0365757A (ja) 1989-08-03 1989-08-03 文章処理装置
JP201798/89 1989-08-03

Publications (3)

Publication Number Publication Date
EP0411960A2 true EP0411960A2 (de) 1991-02-06
EP0411960A3 EP0411960A3 (en) 1991-10-09
EP0411960B1 EP0411960B1 (de) 1994-12-14

Family

ID=16446959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90308576A Expired - Lifetime EP0411960B1 (de) 1989-08-03 1990-08-03 Schlickerdruckgiessvorrichtung zum Herstellen von Sanitärartikeln

Country Status (4)

Country Link
EP (1) EP0411960B1 (de)
JP (1) JPH0365757A (de)
AT (1) ATE115459T1 (de)
ES (1) ES2064648T3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681550A1 (fr) * 1991-09-19 1993-03-26 Decoparc Sarl Procede de fabrication d'articles a base de beton moules en coquilles et machine pour la mise en óoeuvre de ce procede.
FR2683761A1 (fr) * 1991-11-19 1993-05-21 Forgel Sa Dispositif de sechage de moule en platre.
US5695791A (en) * 1994-10-25 1997-12-09 Basf Aktiengesellschaft Apparatus for producing foamed plastics parts
CN102380905A (zh) * 2011-10-18 2012-03-21 刘国文 切料装置及陶瓷压力注浆机
CN102514090A (zh) * 2011-12-06 2012-06-27 惠达卫浴股份有限公司 一种改进的陶瓷微压成型立浇线
CN107599146A (zh) * 2017-10-19 2018-01-19 佛山市鸣门卫浴家居有限公司 一种马桶高压注浆成型后的开模具方法及装置
CN115256597A (zh) * 2022-09-27 2022-11-01 德化宋炎陶瓷有限公司 一种陶瓷注浆机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520234C1 (de) * 1995-06-01 1996-07-18 Netzsch Erich Holding Anlage zum Druckgießen keramischer Artikel
JP5380799B2 (ja) * 2007-07-09 2014-01-08 セイコーエプソン株式会社 文字入力装置、テープ印刷装置および文字入力装置の表示制御方法
JP5621890B2 (ja) * 2013-07-24 2014-11-12 セイコーエプソン株式会社 文字入力装置、テープ印刷装置および文字入力装置の表示制御方法
DE102018208674A1 (de) * 2018-06-01 2019-12-05 Tools And Technologies Gmbh Mehrteilige Formmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB541425A (en) * 1940-06-24 1941-11-26 Twyfords Ltd Improvements relating to water-closet basins
DE2100868A1 (en) * 1971-01-09 1972-07-27 Siemag Siegener Masch Bau Mould closure/locking mechanism - partic for large blow moulding machines
DE2227234A1 (de) * 1972-06-05 1973-12-20 Netzsch Maschinenfabrik Vorrichtung zum ausformen keramischer gusstuecke, insbesondere klosettbecken
EP0089317A2 (de) * 1982-03-17 1983-09-21 Keramik Holding AG Laufen Verfahren und Einrichtung zur Herstellung von Formlingen
EP0211653A1 (de) * 1985-08-06 1987-02-25 Inax Corporation Verfahren zur Herstellung von Hohlwaren durch Sauggiessen
EP0317721A2 (de) * 1987-11-26 1989-05-31 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Presse zum Herstellen von Sanitärartikeln, insbesondere WC-Schüsseln, durch Druckgiessen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB541425A (en) * 1940-06-24 1941-11-26 Twyfords Ltd Improvements relating to water-closet basins
DE2100868A1 (en) * 1971-01-09 1972-07-27 Siemag Siegener Masch Bau Mould closure/locking mechanism - partic for large blow moulding machines
DE2227234A1 (de) * 1972-06-05 1973-12-20 Netzsch Maschinenfabrik Vorrichtung zum ausformen keramischer gusstuecke, insbesondere klosettbecken
EP0089317A2 (de) * 1982-03-17 1983-09-21 Keramik Holding AG Laufen Verfahren und Einrichtung zur Herstellung von Formlingen
EP0211653A1 (de) * 1985-08-06 1987-02-25 Inax Corporation Verfahren zur Herstellung von Hohlwaren durch Sauggiessen
EP0317721A2 (de) * 1987-11-26 1989-05-31 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Presse zum Herstellen von Sanitärartikeln, insbesondere WC-Schüsseln, durch Druckgiessen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681550A1 (fr) * 1991-09-19 1993-03-26 Decoparc Sarl Procede de fabrication d'articles a base de beton moules en coquilles et machine pour la mise en óoeuvre de ce procede.
FR2683761A1 (fr) * 1991-11-19 1993-05-21 Forgel Sa Dispositif de sechage de moule en platre.
US5695791A (en) * 1994-10-25 1997-12-09 Basf Aktiengesellschaft Apparatus for producing foamed plastics parts
CN102380905A (zh) * 2011-10-18 2012-03-21 刘国文 切料装置及陶瓷压力注浆机
CN102380905B (zh) * 2011-10-18 2014-06-11 刘国文 切料装置及陶瓷压力注浆机
CN102514090A (zh) * 2011-12-06 2012-06-27 惠达卫浴股份有限公司 一种改进的陶瓷微压成型立浇线
CN107599146A (zh) * 2017-10-19 2018-01-19 佛山市鸣门卫浴家居有限公司 一种马桶高压注浆成型后的开模具方法及装置
CN115256597A (zh) * 2022-09-27 2022-11-01 德化宋炎陶瓷有限公司 一种陶瓷注浆机

Also Published As

Publication number Publication date
EP0411960A3 (en) 1991-10-09
ATE115459T1 (de) 1994-12-15
JPH0365757A (ja) 1991-03-20
EP0411960B1 (de) 1994-12-14
ES2064648T3 (es) 1995-02-01

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