CN200984780Y

CN200984780Y - Pressure slip casting and pressure demoulding ceramic blank forming device

Info

Publication number: CN200984780Y
Application number: CN 200620153800
Authority: CN
Inventors: 郭俊平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-21
Filing date: 2006-11-21
Publication date: 2007-12-05
Anticipated expiration: 2016-11-21

Abstract

The utility model provides a pressure grouting, press demoulding pottery body molding device, comprising an engine body, a mould and an impacted device, which is characterized by: the impacted device is comprised by a strut, a front platen, a pressurization gasbag, a mobile platen and a rear platen, the gas pressure of the pressurization gasbag is greater than or equal to slurry pressure in mold cavity, and the area of the gasbag is bigger than that molding body, thus the mold is always in the impacted state, the mold is composed by a gypsum mold and external metal sleeve. By the application of the scheme, so the slurry pressure can reach to 0.3 to 1.5 MPa while grouting, the gas pressure can reach to 0.1 to o.7 MPa while demoulding, the density of produced pottery body is high, and the deformation is small after backing, and high mold turnover ratio, and labor intensity of demoulding is greatly reduced and saving energy.

Description

A kind of slip casing by pressure, pressure release ceramic blank forming device

Technical field

The utility model relates to a kind of ceramic body shaped device, more particularly relates to a kind of slip casing by pressure, pressure release ceramic blank forming device.

Background technology

Known horizontal ceramic body shaped device comprises body 36, mould 34 (comprising punch and die) and the hold down gag that is made of depression bar 31, traveling table 32, front pressuring plate 33 and rear fender 35 etc. as shown in Figure 4.Its weak point is: pressure is less during slip casting, the ceramic green density that (0.1MPa is following) produced is low, easily deform after burning till, owing to be from mud, to absorb water after the slip casting by plaster mold, so the blank forming time is long, production efficiency is low, and the mould turnover rate is low, and it is bigger etc. to open mould labour intensity.

Summary of the invention

The purpose of this utility model is the deficiency that overcomes on the prior art, provides a kind of grouting pressure to reach 0.3MPa to 1.5MPa, the ceramic green density height of producing, not yielding after burning till, make the blank forming time short, mould turnover rate height, the ceramic body shaped device that demoulding labour intensity is low.

In No. 2006200609260 patent applications, the applicant provides a kind of slip casting mould that is used for the ceramic body moulding, and this mould can be applicable to the above ceramic body injection forming of pressure 0.3MPa, and the utility model is included it as a reference in.

For achieving the above object, the utility model is taked following technical scheme:

The utility model comprises body, mould (containing punch and die) and hold down gag etc.

Described body is by all around, lower and upper cross-member, the front and back straight beam, and fixed guide, movable guiding rail and width adjustor constitute.

Described fixed guide is made of the back entablature.

The crossbeam of described movable guiding rail below straight beam and frame is hinged, and utilizes the distance between width adjustor adjusting and the movable guiding rail.

Described width adjustor is made of handwheel, screw rod and preceding entablature.

Described hold down gag is made of depression bar, preceding platen, supercharging air bag, moveable platen and back platen, and depression bar is installed on the upper left crossbeam, and it both can be a screw rod, also can be hydraulic stem.Depression bar heads on preceding platen, the back sky is overlapping moveable platen, sandwich supercharging air bag.Depression bar and upper left crossbeam, fixed guide, preceding entablature, upper right crossbeam and movable guiding rail be near same horizontal plane during work, and this horizontal plane is again just near the center height of mould.

Gas pressure in the described supercharging air bag is more than or equal to the mud pressure in the die cavity, and the area of air bag is greater than the area of molding blank, thereby makes mould be in compacted state all the time.

Described mould comprises punch and die, is cylinder type, is made of the metal sleeve on plaster mold and surface, and the utility model once can be loaded onto and state mould and overlap more.

Described plaster mold is provided with the pulp-inlet pipe of confession grouting, and the air inlet pipe that mould is used is opened in overfall pressurize pipe and confession.

The beneficial effects of the utility model:

(1) design of hold down gag and band metal sleeve Mould design have been offset axial force and the radial load that ceramic body produces in the slip casting process respectively, pressure when making slip casting can reach the high pressure of 0.3-1.5MPa, thereby the blank density height of producing, burn till the back and be out of shape little.

(2) under grouting pressure up to 0.3-1.5MPa, moisture content in the mud and air are discharged from the aperture on mould metal cylinder surface and the crack between adjacent two moulds soon, base substrate not only can the very fast demoulding, and because the water content of plaster mold height does not influence slip casting effect, mould is very fast can to drop into slip casting operation next time again.Improved the turnover rate of mould greatly.

(3) be provided with the air inlet pipe of using for the demoulding in the mould; as long as unclamp front pressuring plate during the demoulding; injecting compressed air in die or punch; base substrate promptly leaves second half mould with die or punch; injecting compressed air in second half mould again; base substrate promptly breaks away from mould automatically, and such release method has alleviated labor intensity of operating personnel greatly.

(4) dehydration of mud is that depended on pressure is extruded water from the micropore of gypsum during slip casting, rather than by the naturally suction of gypsum to mud, so do not need to go specially dried gypsum, energy savings.

Description of drawings

Fig. 1 is a front view of the present utility model

Fig. 2 is a vertical view of the present utility model

Fig. 3 is a workflow diagram of the present utility model

Fig. 4 is the front view of known horizontal high-pressure grouting device

Fig. 5 is a solid article die profile of the present utility model

Fig. 6 is a hollw article die profile of the present utility model

The specific embodiment

The utility model will be further described below in conjunction with accompanying drawing.

Referring to Fig. 1-6, a kind of slip casing by pressure, pressure release ceramic blank forming device, (8 is die by body 1,

mould

8,9,9 is punch, two are combined into a cover, and the utility model can be adorned this type of mould and overlap more) and the hold down gag of forming by depression bar 4, preceding platen 3, supercharging air bag 7, moveable platen 6 and rear fender 10 constitute.During work, earlier mould is installed between the fixed guide 16 and movable guiding rail 13 of frame one by one, utilizes depression bar 4, platen 3 and supercharging air bag 7, moveable platen 6 and rear fender 10 are pressed abd fixed on mould on the frame.

Referring to Fig. 3-5, start slush pump 18 and in mould, inject mud (grouting pressure is looked the difference of goods, can be chosen between the 0.3-1.5MPa) by Grouting Pipe 21.Meanwhile, be all the compressed air of 0.3-1.5MPa by supercharging tracheae 11 input pressure in supercharging air bag 7, the suffered outside reaction force of depression bar 4 this moment is held by be fixed guide rail 16 and preceding entablature 14 of upper left crossbeam 15, and the other end is connected with upper right crossbeam 17 and withstands rear fender 10 clamping molds, and the complete machine internal stress obtains balance.After slip casting finishes, close the valve 19 before the Grouting Pipe 20 successively, close the supercharging tracheae 11 of supercharging air bag 7, open the emptying tracheae, discharge the air bag air, unclamp depression bar 4, back out platen, (gas pressure is looked the difference of goods to the mould air inlet pipe 28 injection gases at high pressure that open of punch 9 in elder generation, can be chosen between the 0.1-0.7MPa) ceramic body promptly leaves punch 9 with die 8, inject aforementioned gases at high pressure to the mould air inlet pipe 24 that opens of die 8 again, ceramic body promptly leaves die 8 automatically, and whole casting process is finished.

When the mould appearance size changes, can pass through width adjustor 2,12, regulate between fixed guide 16 and the movable guiding rail 13 apart from solving.

Below in conjunction with Fig. 3, Fig. 5, Fig. 6 function of the present utility model is further described.

Referring to Fig. 3, Fig. 5, when production solid ceramic base substrate, high-pressure slurry enters the die cavity 26 of die 8 from Grouting Pipe 21, and this moment, the metal-

coating

25,27 of mould worked to bear the slip casting radial load, aforementioned hold down gag works to bear the slip casting axial force, has guaranteed finishing of high-pressure slip-casting work.After slip casting finishes, close the valve 19 before the Grouting Pipe 20.Import gases at high pressure to the mould air inlet pipe 28 that opens of punch 9 earlier, ceramic body 26 promptly leaves punch 9 with die 8, and the mould air inlet pipe 24 that opens on die 8 is imported gases at high pressure again, and ceramic body 26 promptly leaves die 8 automatically, and whole casting process is finished.

Referring to Fig. 3, Fig. 6, when producing the hollow ceramic base substrate, high-pressure slurry enters the die cavity 26 ' of die 8 ' from Grouting Pipe 21 ', this moment, the metal-coating 25 ', 27 ' of mould worked to bear the slip casting radial load, aforementioned hold down gag works to bear the slip casting axial force, has guaranteed finishing of high-pressure slip-casting work.After being full of mud and base substrate and die cavity contact-making surface in the die cavity 26 ' and having solidified certain thickness typing, close the preceding slurry-inlet valve door 19 of Grouting Pipe 21 ', open the overfall valve 22 after the Grouting Pipe 21 ', open the intake valve 29 of overfall pressurize pipe 30, in base substrate 26 ', inject pressure-air, the mud of the interior ot-yet-hardened of base substrate this moment promptly flows to overfall valve 22 from Grouting Pipe 21 ' and discharges, when confirming that overfall finishes, close overfall valve 22, continue to inject the pressure-air pressurize, it is dry to allow base substrate continue, and closes intake valve 29 after drying finishes, drain casting work is finished, and later mould program that opens and solid casting are together.

Claims

1, a kind of slip casing by pressure, pressure release ceramic blank forming device, comprise that body, mould and hold down gag constitute, and is characterized in that: described body is by all around, lower and upper cross-member, and front and back straight beam, fixed guide, movable guiding rail and width adjustor constitute; Described fixed guide is made of the back entablature; The crossbeam of described movable guiding rail below straight beam and frame is hinged, and utilizes the distance between width adjustor adjusting and the fixed guide; Described width adjustor is made of handwheel, screw rod and preceding entablature; Described hold down gag is made of depression bar, preceding platen, supercharging air bag, moveable platen and back platen.

2, a kind of slip casing by pressure according to claim 1, pressure release ceramic blank forming device, it is characterized in that: described depression bar is installed on the upper left crossbeam, and it both can be a screw rod, also can be hydraulic stem.

3, a kind of slip casing by pressure according to claim 1, pressure release ceramic blank forming device, it is characterized in that: described depression bar heads on preceding platen, the back sky is overlapping moveable platen, sandwich supercharging air bag.

4, a kind of slip casing by pressure according to claim 1, pressure release ceramic blank forming device, it is characterized in that: depression bar and the approaching same horizontal plane of upper left crossbeam, fixed guide, preceding entablature, upper right crossbeam and movable guiding rail during the work of described depression bar, and also this horizontal plane is again just near the center height of mould.

5, a kind of slip casing by pressure according to claim 1, pressure release ceramic blank forming device is characterized in that: the gas pressure in the described supercharging air bag is more than or equal to the mud pressure in the die cavity.

6, a kind of slip casing by pressure according to claim 1, pressure release ceramic blank forming device, it is characterized in that: the area of described supercharging air bag is greater than the area of molding blank.