Summary of the invention
For overcoming the deficiency of traditional moulds, the invention provides a kind of mould rapid draing that makes, and the easy Production of Ceramics gypsum mold and preparation method thereof of operation control, can enhance productivity effectively, reduce production costs.
The present invention is achieved in that a kind of pressurize-to-dry type gypsum mould, comprises the die body of being made by gypsum material, and die body has die face one side and outer surface one side; Be provided with the permeability cell that at least one diameter is 0.5~3cm in the middle of the die body thickness, permeability cell is netted or pectination distributes, and is spaced apart 5~20cm, and between join or commissure; Also be provided with breather pipe in die body, an end and the permeability cell of breather pipe join, and the other end exposes outer surface one side of die body, and can correspondingly with the efferent duct of air compressor be connected;
Described permeability cell is for to swathe on metal tube that has aperture or plastic tube lateral wall with gauze, or swathes with gauze and madely in the gas permeable material outside to have heart and the ventilative pipe of outer surface intercommunication, and arbitrarily bending or cut out.
As a further improvement on the present invention, described gas permeable material can be to cut into the sponge of strip or fiber cloth, filament, cotton yarn, also can be the cauline leaf of plant drying, and above-mentioned bar material is concatenated into strip, make made permeability cell easily crooked or cut out with little iron wire.
As another improvement of the present invention, described gas permeable material can be the bourdon tube that is rolled into by wire or rigid plastics silk.
Described gauze is cotton gauze or nonwoven.
The preparation method of pressurize-to-dry type gypsum mould, make with step as follows:
(1) will prick many uniform apertures on metal tube or the plastic tube sidewall, or gas permeable material sheared and wear and twine and conspire to create or be rolled into strip, with gauze above-mentioned bar material is swathed into the permeability cell that diameter is 0.5~3cm again with little iron wire;
(2) 2~10cm place, edge that is equivalent to be injection moulded body on master mold is interspersed with 2~4 spacer bars, and the termination of spacer bar has enough length to expose the outside of master mold;
(3) above-mentioned permeability cell is reticulated or pectination by the distribution of shapes that is injection moulded body, and between can be connected to each other or commissure, be spaced apart 5~20cm between the permeability cell;
(4) permeability cell extends to the spacer bar place and promptly is bundled into noose, and redundance is cut off;
(5) between permeability cell, join or the commissure place cuts off gauze, gas permeable material is contacted with each other, be rolled into one again with gauze again, and adjust the position of permeability cell, permeability cell is in be injection moulded the centre of body thickness;
(6) be sidelong at the outer surface one that is equivalent to be injection moulded body and put breather pipe, and an end and the permeability cell of breather pipe joined nearby, in the joint gauze is cut off, one end of breather pipe is contacted with gas permeable material, be integral with gauze parcel, the other end of breather pipe exposes and is injection moulded external surface one side again;
(7) with adjusting good calcium plaster injection, when the permeability cell distortion takes place, should correct rapidly, and once finish the cast of die body at short notice by the above-mentioned master mold that is provided with permeability cell;
(8) take out spacer bar fast when the gypsum semi-solid preparation, remove master mold and promptly make die body after gypsum solidifies fully, seal with calcium plaster at the reinforcing bar hole that will stay then on the made die body; Also can stay next hole as breather pipe.
When using gypsum mold of the present invention to carry out Production of Ceramics, after notes were made the primary production form removal, available mini air compressor was to the die body drying of pressurizeing.Its method is the efferent duct of air compressor to be inserted the breather pipe of die body, and remain on 1~8 atmospheric pressure, compressed air enters permeability cell by breather pipe, from the centre of die body to the both sides scattering and permeating, thereby the moisture content in the die body is discharged to the surface of die body both sides fast, continue about half an hour, can make die body dry and be used for once more annotating and make product.This method also can be injection moulded the body drying of pressurizeing to what just finished.
Realize the present invention, can make mould rapid draing, and not be subjected to the weather condition restriction, can enhance productivity greatly, save the workshop land used; Be specially adapted to relatively large ceramic product productions such as cleaners and polishes, can realize whenever slip casting round the clock 2~3 times, can realize that also the same day, molding was used for slip casting production the same day, carry previous week and go into operation; Because of not needing to use heating system or electric fan that mould is carried out drying, can save a large amount of energy resource consumptions again, reduce production costs, reduce air pollution and noise pollution.
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention is described further:
Pressurize-to-dry type gypsum mould comprises the die body of being made by gypsum material 1, and die body has die face one side 2 and outer surface one side 3; Be provided with the permeability cell 4 of the many about 1cm of diameter in the middle of die body 1 thickness, permeability cell 4 is netted or the pectination distribution, is spaced apart 10~15cm, and between join or commissure; Be provided with breather pipe 5 in die body 1, an end and the permeability cell 4 of breather pipe 5 join, and the other end exposes outer surface one side 3 of die body 1.Permeability cell 4 is by fiber cloth or be called bar shaped that industrial scouring pad cut into the about 1cm of the length of side as gas permeable material, swathes with the cotton gauze to form again.
The preparation method of pressurize-to-dry type gypsum mould, make with step as follows:
(1) with fiber cloth or be called bar shaped that industrial scouring pad cuts into the about 1cm of the length of side as gas permeable material, with little iron wire these bar shaped gas permeable materials are worn then and twined and conspire to create rectangularly, swathe into the permeability cell 4 of the about 1cm of diameter again with the cotton gauze;
(2) the about 5cm place, edge that is equivalent to be injection moulded body on master mold 6 is interspersed with 4 spacer bars 7, and the termination of spacer bar 7 has enough length to expose the outside 61 of master mold 6;
(3) above-mentioned permeability cell 4 is reticulated or pectination by the distribution of shapes that is injection moulded body, and between can be connected to each other or commissure, be spaced apart 10~15cm between the permeability cell 4;
(4) permeability cell 4 extends to spacer bar 7 places and promptly is bundled into noose, and redundance is cut off;
(5) between permeability cell 4, join or the commissure place cuts off gauze, gas permeable material is contacted with each other, swathe again with gauze again and be integral, and adjust the position of permeability cell 4, make permeability cell 4 be in the centre that is injection moulded body thickness;
(6) be sidelong at the outer surface one that is equivalent to be injection moulded body and put breather pipe 5, and an end and the permeability cell 4 of breather pipe 5 joined nearby, in the joint gauze is cut off, one end of breather pipe 5 is contacted with gas permeable material, again swathe with gauze and be integral, the other end of breather pipe 5 exposes outer surface one side that is injection moulded body;
(7) with adjusting good calcium plaster injection, when permeability cell 4 distortion take place, should correct rapidly, and once finish the cast of die body 1 at short notice by the above-mentioned master mold 6 that is provided with permeability cell 4;
(8) take out spacer bar 7 fast when the gypsum semi-solid preparation, remove master mold 6 and promptly make die body 1 after gypsum solidifies fully, seal with calcium plaster at the reinforcing bar hole that will stay then on the made die body 1.