JP3756160B2 - Manufacturing method of ceramic products for pavement - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceramic product in which the shape of a hand, a foot, a face, etc. is transferred in a concave shape almost faithfully. of Ceramic products for pavement that can be installed on pavements, especially for manufacturing methods of It relates to the production method.
[0002]
[Prior art]
Conventionally, as a memorial for the birth of a child, or as a memorial for visiting an area or building where a celebrity or the like is located, a method of producing a three-dimensional product from the limb type of the person or the limb type (for example, (See Patent Document 1 and Patent Document 2.)
[0003]
[Patent Document 1]
Japanese Patent No. 3321410
[Patent Document 2]
Japanese Patent No. 2589445
[0004]
In the inventions disclosed in Patent Document 1 and Patent Document 2, gypsum is poured into a first concave mold obtained by pressing or immersing a limb or the like in a mold making frame into which a resin block or resin is poured. The first convex mold is formed, a mold-making frame is provided on the first convex mold, and a plastic resin or a molten metal is poured into a second concave mold obtained by pouring silicone into the frame, and then cured. This is a method for manufacturing a convex shape 2 (final product).
[0005]
By using these methods, it is possible to manufacture limbs and three-dimensional products that faithfully reproduce fingerprints and the like of limbs and have excellent storage stability.
[0006]
However, such a conventional manufacturing method is used when the material for manufacturing the second convex mold (final product) is a resin or metal that can be poured, such as hands, feet, faces. In the case of producing ceramic products such as pavement bricks, in which the shape of a part of the body is transferred in a concave shape, it cannot be applied due to the following problems.
[0007]
[Problems to be solved by the invention]
Using these conventional methods, when trying to make a pavement brick with the shape of a part of the body such as hands, feet, face, etc. transferred in a concave shape, the first conceivable thing is to fire the first concave shape. It is a method of making a final product, that is, a method in which a hand, a foot, a face or the like is directly pressed against bricks before firing (hereinafter referred to as green bricks).
[0008]
However, pavement bricks are significantly superior in strength, durability, wear resistance and water permeability compared to ceramic products used as tableware and figurines.
[0009]
Therefore, pavement bricks are already made quite hard from the raw brick stage, and it is difficult even for adults to press their hands, feet, face, etc., and the extent to which a contour is formed on the surface of the brick Met. Therefore, it is difficult to form a contour for a person with a weak pressing force such as an infant or an elderly person. In addition, in the case of an adult, as much pressure is applied as it is pressed, the three-dimensional shape of the hands, feet, face, etc. and fingerprints are pressed, and it is not possible to produce bricks with faithfully concave transfer even to the details of the details. It was impossible.
[0010]
Therefore, adding moisture to the raw bricks until infants and the elderly can easily press their hands, feet, face, etc., and adjusting the hardness, no matter how much the baking time or baking temperature is adjusted, There was a problem that it was cracked after firing, and quality as a pavement brick could not be secured.
[0011]
The present invention has been made in view of such problems, and the object of the present invention is the shape of hands, feet, faces, etc. that can be easily manufactured without requiring excessive pressing force. Pavement ceramic with faithfully recessed transfer of It is to provide a production method.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms a first molding material made of clay softer than a pre-fired ceramic that has been wet-extruded into a predetermined shape, and presses the transferred object, A first step of forming a concave part to obtain a first concave mold, and a fluid second molding material is poured into the concave part of the first concave mold and plastically deformed when pressed against the ceramic before firing. A second step of obtaining a reproduced convex shape of the transfer object by curing to a state not to perform, and a third step of obtaining a second concave shape by pressing the reproduced convex shape against the pre-fired ceramic to form a concave portion Then, through the fourth step of firing the second concave mold to obtain a final product, a ceramic product for pavement in which the shapes of hands, feet, face, etc. are transferred in a concave shape is manufactured.
[0013]
This eliminates the need for excessive pressing force, and does not impair the quality of ceramic products for pavements, so that ceramic products with three-dimensional shapes such as hands, feet, and faces, as well as detailed patterns such as fingerprints, are faithfully recessed transferred. It can be easily manufactured. Since the ceramic product for pavement can be installed on the pavement as a matter of course, it is visible to many people, and even if a person walks on the ceramic product, it is not worn and the state is permanently preserved.
[0014]
In addition, the shape can be collected without soiling the transfer object, and the second molding material can be poured as it is without waiting for the time for curing the clay, so that the process time can be shortened. Also, since clay can be reused and the transferred material is not directly pressed onto the final product, it can be pressed onto the clay as many times as possible even if it fails.
[0015]
Claim 2 The invention described in
The first molding material is a ceramic product for pavement made of paper clay. of It is a production method.
[0016]
Claim 2 According to the invention, when the cured reproduced convex mold is released from the first concave mold, the paper clay melts if washed with water, so that the reproduced convex mold is easily released.
[0017]
Claim 3 The invention described in
The paper clay is a ceramic product for pavement having a moisture content of 30% when the object to be transferred is pressed. of It is a production method.
[0018]
Claim 3 According to this invention, even a person with weak pressing force such as an infant or an elderly person can make a ceramic product in which the shape of a hand, a leg, a face, etc. is transferred in a concave shape without applying force.
[0019]
Claim 4 The invention described in
The second molding material is a ceramic product for pavement made of resin. of It is a production method.
[0020]
Claim 4 According to the present invention, a light and stable reproducible convex shape can be produced, so that the pressing operation to the pre-fired ceramic (green brick) becomes easy. The cured resin can be easily released from the first concave mold. Once the shape has been sampled, the ceramic product can be manufactured repeatedly using the reconstructed convex mold.
[0021]
Claim 5 The invention described in
The resin is a silicone rubber pavement ceramic product of It is a production method.
[0022]
Since silicone rubber is easy to obtain and inexpensive, it can be used for collecting a large number of hands, feet, faces and the like at once. Also, by using silicone rubber with a short curing time, the process of pressing the reproduced convex shape on the ceramic before firing (raw brick) and stamping stamps and handwritten characters on the raw brick in a short time at the same place. Can be done.
[0023]
Claim 6 The invention described in
The second molding material is a ceramic product for pavement made of metal. of It is a production method.
[0024]
Claim 6 According to the present invention, it is possible to permanently store the reproduced convex shape. Once the shape has been collected, it can be repeated as many times as possible using the reconstructed convex mold to produce a ceramic product with the concave shape transferred faithfully.
[0025]
Claim 7 The invention described in
The transferred material is a ceramic product for pavement that is a part of the body such as hands, feet, face, etc. of a person with weak pressing force such as infants and the elderly of It is a production method.
[0026]
Claim 7 According to the invention, it has been difficult to make so far, the realistic three-dimensional shape and the pattern of details such as fingerprints that the infants pressed hands, feet, face, etc. directly onto the ceramic (raw brick) before firing are concave Transferred ceramic products for pavements are produced.
[0027]
Ceramic products are so-called pottery products, which are made by crushing and blending clay, sand, lime, and other materials, adding other materials such as pigments to these ingredients, mixing them uniformly, and forming by wet extrusion or dry pressing. And fired in a kiln or furnace. In addition, the ceramic product of the present invention is formed by wet extrusion after adding water to the mixed material to adjust the viscosity.
[0028]
In addition to bricks, ceramic products include tiles, ceramic blocks, and the like manufactured by substantially the same process as described above. Note that bricks, tiles, and blocks differ only in their constituent materials, firing temperature, and thickness, and even if they are tiles, a large one with a thickness of about 60 mm is called a tile block. Small things with a thickness of about 30 mm are sometimes called brick tiles.
[0029]
The ceramic product for pavement refers to a product having quality such as strength and durability that can be installed on a pavement (carway, sidewalk, plaza, parking lot, etc.) among ceramic products. For example, it refers to a ceramic product that satisfies not only the JIS R1250 standard (standard for bricks) but also a quality standard substantially equivalent to the association standard of interlocking blocks that are widely used as paving concrete blocks.
[0030]
In the present specification, the pre-fired ceramic refers to a pre-fired ceramic that has been wet-extruded during the production of a ceramic product. In particular, the ceramic before firing of the ceramic product for pavement is formed considerably harder than a general ceramic before firing in order to maintain the quality. In addition, the ceramic before baking is equivalent to the raw brick in terms of bricks.
[0031]
In addition, the pre-fired ceramic formed by dry press molding is harder than the pre-fired ceramic formed by wet extrusion, so that it is impossible to press the material to be transferred by mechanical force, and the moisture content is low. Even if pressed, the ceramic before firing is broken into pieces, so it is not used in the present invention.
[0032]
Firing is a final process for baking a pre-fired ceramic in a high-temperature kiln or furnace to obtain a final ceramic product. Note that the wet-extruded ceramic before firing is different from the dry-pressed ceramic because it contains moisture, so it needs to be dried by exposure to warm or hot air before baking. Naturally, it is included as a pre-stage of the process. Moreover, after drying the ceramic before firing, a glaze may be applied and fired.
[0033]
The object to be transferred in the present invention mainly refers to a part of the body such as a hand, a foot, a face, etc., but it is difficult or impossible to transfer the shape directly to the ceramic (green brick) before firing. (Gypsum, thin-walled glass, raw fish from Takutaku, etc.) are also included. If these materials to be transferred are pressed directly against the ceramic (green brick) before firing, they will be plastically deformed or broken before the shape is transferred to the concave shape, and if the material to be transferred is a part of the human body, labor is required. There is also a risk of injury.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. The drawings show an example of a method for producing pavement bricks in which the shapes of hands, feet, faces and the like according to the present invention are transferred in a concave shape. In addition, the following shows the case where the first to third steps are performed in a place where there is a participant who desires transfer of hands, feet, face, etc., in the manufacturing process of the brick for pavement.
[0035]
First, as a first step, the first concave mold 3 is manufactured in order to collect the shape of the transferred object 1 such as a hand, a foot, and a face (FIG. 1). The first molding material 5 to be the first concave mold 3 is molded so as to be not less than the size of the transfer object 1 and not more than the size of the brick to be the final product (FIG. 1A). ).
[0036]
The dimensions of the bricks used in this embodiment are 300 mm x 300 mm in length and width, and 60 mm in thickness. At the time of raw bricks, considering the shrinkage of about 10% due to subsequent firing. The first molding material 5 is formed in a substantially rectangular parallelepiped shape having a length and width of 200 mm × 300 mm and a thickness of 10 mm.
[0037]
The transferred object 1 is pressed onto the first mold material 5 thus molded (FIG. 1B). Thereafter, the transfer object 1 is removed from the first mold-making material 5 to obtain the first concave mold 3 in which the concave portions 3a are formed (FIG. 1C).
[0038]
The first molding material 5 to be the first concave mold 3 is a material that can directly form the concave portion 3a by pressing the transferred object 1 without plastic deformation of the transferred object 1, that is, the final product. It is a softer material than the raw brick before being fired (wet extruded), and has a predetermined shape (in this embodiment, 200 mm × 300 mm in length and width, 10 mm in thickness) Any material can be used as long as it can be molded into a substantially rectangular parallelepiped), and clay (including resin clay) is preferable.
[0039]
If a material in which a plaster, resin, concrete, or the like is fluidized is used as the first mold-making material, the transfer object 1 is soiled, and it takes a long time to become a first concave mold. In particular, when collecting shapes of infants and elderly hands, feet, faces, etc., the shapes of the hands, feet, faces, etc. will be moved before the first mold material is cured. Is difficult.
[0040]
Therefore, if the first mold-making material 5 such as clay is used, it is not necessary to apply an excessive force to the hard green brick before firing to directly press the transferred object 1 and the transferred object 1 becomes dirty. The shape is collected in a short time. Further, the first molding material 5 does not need to be cured, and immediately after the recess 3a is formed, the second molding material 9 described later can be poured into the process, thereby shortening the process time. Is planned.
[0041]
Furthermore, since clay can be used any number of times even if it fails to collect the shape, it can be reused and has the advantage of being low in cost. In this regard, if you try to press your hands, feet, face, etc. directly against raw bricks or unhardened concrete walls, or if you use gypsum or resin as the first mold material, it will fail. Since these materials will not be reusable, care must be taken and materials must be prepared for each participant. On the other hand, when the first concave mold is made of clay, it may be failed many times, and the same clay can be used among a plurality of participants.
[0042]
In the present embodiment, it is not necessary to apply force even to infants and the elderly, it is excellent in safety, the transfer object 1 is not easily soiled, and the transfer object 1 is finely processed up to a detailed pattern such as a fingerprint. Paper clay (“Nangel no Nendo” (trade name) manufactured by Chubu Denki Kogyo Co., Ltd.), which can be collected in shape, was molded and used as the first molding material 5.
[0043]
The composition ratio of the above “Angel Nendo” is 60% wet type acrylic resin hollow body, 5% pulp fiber, 20% synthetic glue, and 5% antiseptic and fungicide. Acrylic resin hollow body contains about 20% moisture, but by adding about 10% moisture at the end of the manufacturing process, the total moisture content is about 30%. The clay is soft enough to be pressed without applying force and does not stick to the transfer object 1. The additional amount of moisture is appropriately changed depending on the moisture content of the clay.
[0044]
In addition, “Angel's Nendo” has a weight of 80 g per 400 cubic centimeters (about two rice balls) and is lightweight and easy to carry anywhere. There is.
[0045]
As the second step, the first convex mold 3 is used to manufacture the reproduction convex mold 7 of the transferred object 1 (FIG. 2). After the first concave mold 3 is manufactured, the first mold molding material 5 is dried, fired, etc., if necessary, and then the fluid second mold mold is placed in the concave section 3a of the first concave mold 3. Pour material 9 (FIG. 2 (A)), cure second mold material 9 until it is plastically deformed even if pressed directly against green brick, and then remove from mold 1 (FIG. 2 (B)), the reproduction convex mold 7 of the transfer object 1 is obtained (FIG. 2 (C)). 2B is a cross-sectional view taken along line aa in FIG.
[0046]
In the present embodiment, since the first process to the third process are completed in a short time in the same place, the first concave mold 3 is formed without drying and curing the first molding material 5. After the collection, after confirming that the concave portion 3a of the first concave mold 3 is not cracked or deformed, the second mold taking material 9 made of resin is poured.
[0047]
Incidentally, the paper clay, which is the first molding material 5 used in the present embodiment, has a high moisture content and is soft, so that the first concave mold 3 is deformed by moving or leaving it. It is preferable to pour the second mold taking material 9 immediately after forming the concave portion 3a, because it is easy to be trapped or to be damaged or dust.
[0048]
On the other hand, when oven clay is used as the first mold-making material 5, it can be fired using household appliances, so the firing method is simple and the firing time is short, so firing and drying may be optional. .
[0049]
In this embodiment, it is easily available and inexpensive, and even ordinary people can safely and easily perform mixing operations, etc., cure in a short time, and stability after curing (water resistance, durability, strength, non-shrinkage) Silicone rubber having excellent properties and the like is used as the second mold taking material 9.
[0050]
Specifically, a liquid silicone rubber for molding made by GE Toshiba Silicone Co., Ltd. (product name TSE350 (main agent) and corresponding product name CE60 (curing agent), and 5 cc of curing agent for 1 liter of the main agent. (Mixed so as to be uniform for about 1 minute) is used as the second mold-making material 9 and gently poured into the recess 3a so that the shape of the recess 3a does not collapse.
[0051]
In addition, in order to make it easy to visually recognize whether or not the main agent and the curing agent are uniformly mixed, the curing agent may be colored so that it can be seen that it has been uniformly mixed.
[0052]
Moreover, in the amount of 1 liter of the above silicone rubber, the reproduction convex mold 7 produced when pressing the shape of one person's hand, foot, head, etc. on one brick of the above size is for 1 to 2 people. It is possible to make.
[0053]
Since such silicone rubber is rich in fluidity, it can easily flow into the minute gaps in the recesses 3a to make an elaborate reproduction convex mold 7. However, in addition to silicone, plastic resin or urethane resin can be used. The second mold material 9 may be used.
[0054]
Thereafter, in order to remove air contained in the cast molding material 9, deaeration and defoaming are performed by applying vibration to the first concave mold 3.
[0055]
In the present embodiment, although not shown, in order to prevent the second molding material 9 from flowing out from the first concave mold 3, the first concave mold 3 is placed in a large bat. The second mold taking material 9 is poured in a state in which is put. Further, an embankment-like frame may be provided around the first concave mold 3 to prevent the outflow of the second mold taking material 9 from expanding.
[0056]
Thereafter, the first concave mold 3 into which the second molding material 9 has been poured is left for about 30 minutes, and the second molding material 9 is cured by natural drying. The silicone rubber in this embodiment is cured to a hardness of about 47 durometer A and a tensile strength of about 2.5 MPa.
[0057]
The cured second mold taking material 9, that is, the reproduction convex mold 7, is made of resin and is excellent in releasability, and can be easily removed from the first concave mold 3 without the need for a mold release material. In the present embodiment, the first concave mold 3 is made of soft paper clay, and when the reproduction convex mold 7 is cured, the paper clay is not completely cured. When removing, paper clay fibers and small pieces may adhere.
[0058]
Therefore, in the present embodiment, the reproduced convex mold 7 is obtained by washing the first concave mold 3 with water, dissolving the first concave mold 3 itself, decomposing it, and washing it away. In addition, since the silicone rubber in the present embodiment has stability such as water resistance, durability, strength, non-shrinkage once cured, the reproduced convex mold 7 is formed even when water adheres. Does not plastically deform.
[0059]
In this way, unlike the transferred object 1 such as a hand, a foot, a face, or a plaster mold, it is lightweight and can be pressed against a raw brick without being damaged or plastically deformed. Reproduction convex mold 7 in which a detailed pattern such as a fingerprint is reproduced is easily made in a short time and in front of a participant. In addition, since a resin such as silicone rubber is easily available and inexpensive, it is possible to collect a large number of shapes such as hands, feet, and faces at once.
[0060]
Furthermore, since the reproduction convex mold 7 has stability, it can be stored semipermanently. If the reproducible convex mold 7 is stored semipermanently, the first concave mold 3 may eventually be deformed easily such as clay before curing and baking, and may have poor storage stability. Repeatedly, you can make bricks again and again.
[0061]
The second molding material 9 is not limited to the resin, and the importance and value of the transferred object 1 and the owner of the transferred object 1 when the process time, work place, budget, etc. are not concerned. Or it can be freely selected according to the budget of the creator. For example, if the celebrity hand, foot, face, or object created by the celebrity is the object 1 to be transferred, the second molding material 9 may be a molten metal. The reproduction convex mold 7 made of metal has no elasticity and is hard, so that the shape of the transfer object 1 can be faithfully transferred to the raw brick. In addition, the reproduction convex shape 7 can be permanently stored and displayed.
[0062]
As a third step, the second concave mold 13 is manufactured using the raw brick 11 (FIG. 3). The reproduction convex mold 7 is flattened by polishing, cutting, or the like on the back surface 7a that does not have the shape of the transfer object 1 as necessary.
[0063]
The reproduced convex mold 7 is pressed against the pavement surface 11a of the raw brick 11 which has been wet-extruded (FIG. 3A). Thereafter, the reproduced convex mold 7 is removed from the raw brick 11 to obtain a second concave mold 13 in which a concave portion 13a is formed (FIG. 3B).
[0064]
In the present embodiment, the raw brick before firing the hard brick of the product number K-BRICK300 manufactured by Kunitomi Co., Ltd. is used as the second concave mold 13. This green brick is mixed with clay and chamotte, which are the main raw materials similar to general bricks, in a ratio of about 8: 2, and blended with pigments to satisfy the quality of pavement bricks, and wet extrusion molding. Made. In addition, in the state of the raw brick, normally, 14 to 15% of moisture is contained, but in this embodiment, in order to facilitate the pressing work of the reproduction convex mold 7, it is approximately in the state of the raw brick. Materials are blended, adjusted, and molded so as to have a moisture content of 20% (the limit that ensures quality as a pavement brick).
[0065]
In general, raw bricks used as the basis for pavement bricks are extracted with high compression ratio and extruded to maintain quality such as strength and durability, so they are very hard even before firing. The raw bricks are dried while being transported from the manufacturing plant to the place where the third step is performed.
[0066]
Moreover, even if it is the raw brick 11 which increased the water | moisture content in the limit as which the quality as a pavement brick is ensured, the to-be-transferred object 1 which consists of a part of bodies, such as a hand, a foot, and a face, is pressed directly. This is difficult and involves labor and injury, and when the transfer object 1 such as a plaster mold is directly pressed against the raw brick 11, the plaster mold is plastically deformed without forming the recess 13a. May end up.
[0067]
Accordingly, in the present invention, the first concave mold 3 is first manufactured from such a transfer object 1, and then the reproduction convex mold 7 that can withstand pressing against the hard green brick 11 is formed as the first concave mold. The pavement brick is manufactured through the process of pressing the reproduction convex mold 7 against the raw brick 11.
[0068]
If it is difficult to form the concave portion 13a even if the reproduced convex mold 7 is used, a plate is placed on the reproduced convex mold 7 so that the shape of the concave portion 13a does not collapse as shown in FIG. The reproduced convex mold 7 is pressed from the top of the board by the weight of the adult male or the mechanical force corresponding to the weight of the adult male so that the shape of the reproduced convex mold 7 is transferred to the green brick 11 in a uniform manner. To.
[0069]
When the reproduction convex mold 7 is made of silicone rubber as in the present embodiment, at least the reproduction convex mold 7 is elastically deformed due to the property of rubber. Accordingly, when the reproduction convex mold 7 is pressed against the green brick 11, a concave portion 13a larger than the actual reproduction convex mold 7 is formed by the elastic force generated at the time of pressing.
[0070]
However, as described above, since the brick has a property of shrinking more than the raw brick when fired thereafter, it is more preferable that the concave portion 13a is formed larger than the actual convex projection 7 at the time of the raw brick. This corresponds to the actual size and shape of the object 1 and the reproduced convex mold 7.
[0071]
Here, the date of the second concave mold 13 in which the concave portion 13a is formed is stamped with a commercially available stamp, or a bamboo work or a wooden stick with a tapered pen shape is used. The original second concave mold 13 having only one in the world is completed. According to the present invention, since the first process to the third process are performed in the same place in a short time without any effort, the participant himself can perform engraving work for a sign or a message.
[0072]
Therefore, in the case of firing the second concave mold 13 in which the concave portion 13a is formed without putting a handwritten signature or message, there is no time restriction as described above, and from the first step to the second step. Can be completed in a short time. In the case where it takes time for the reproduction convex mold to be cured, engraving work for a sign or a message may be completed prior to the second and third steps.
[0073]
As the fourth step, the completed second concave mold 13 is dried and fired to obtain the brick 15 (FIG. 3C). When normal raw bricks are dried, they are dried for about 4 days by a warm air method using the residual heat of the tunnel kiln. However, in this embodiment, the moisture of raw bricks is higher than usual. The second concave mold 13 is naturally dried for about one week, and after removing excess water, normal hot air drying is performed. After drying, firing is performed for about 3 days in a high-temperature tunnel kiln of about 1300 degrees.
[0074]
In addition, after the second concave mold 13 is dried, glaze may be applied to the concave section 13 a, the concave section formed by stamping or stamping, or the entire upper surface of the second concave mold 13. By applying glaze to the recess 13a and baking, the shape of the recess 13a can be seen more clearly, and damage and wear of the recess 13a are further prevented.
[0075]
The brick 15 thus completed is a brick in which the shape of the hand, foot, face, etc. of the article to be transferred 1 and the creation of the creation are faithfully transferred, and satisfies the quality suitable for pavement use. In addition, since the compressive strength of the brick 15 manufactured in this embodiment is about 6.5 MPa and satisfies not only the JIS R1250 standard but also the standard strength of the concrete interlocking block, naturally Can be installed on the pavement.
[0076]
Even if the brick 15 is broken during drying or firing, or even if the quality as a pavement brick is not satisfied as a result of quality inspection after firing, the reproduction convex mold 7 is preserved. Therefore, it can be remade by pressing the reproduction convex mold 7 on a new green brick.
[0077]
By placing and placing the brick 15 on the pavement portion with the concave portion 13a facing upward, anyone can see it at any time, and even if it is placed on the pavement, the pavement is not damaged and worn.
[0078]
In particular, it has been impossible in the past to make a pavement with pavement bricks in which the shape of the hands, feet, face, etc. of people with weak pressing force such as infants and the elderly are faithfully transferred. Moreover, even if an adult presses a hand, foot, face, etc. against a raw brick, the contour is only transferred on the surface of the brick, and a concave shape is transferred to a three-dimensional shape and details such as fingerprints. It was impossible to make the pavement bricks.
[0079]
According to the present invention, the shape of the transferred object is easily collected, and the pressed shape is reproduced using a reproduction convex shape in which the collected shape is faithfully reproduced. Recessed pavement bricks are produced. The three-dimensional shape of the hands, feet, face, etc., and details such as fingerprints, make the viewer think that “how an infant could press the hand, feet, face, etc. strongly against such hard bricks” Pavement bricks are produced with the pattern faithfully reproduced. Moreover, because it is for pavement, it is hard to break and wear, and can be memorized forever.
[0080]
The above describes an example of a method for manufacturing a pavement brick in which the shape of a hand, foot, face, etc. is transferred in a concave shape, but the transferred object may be a part of the body other than the hand, foot, face, or shape. It may be an object that is difficult or impossible to directly concave transfer. In addition, not only bricks for pavement but also ceramic products such as pavement tiles and pavement blocks can be manufactured by the same method. Further, the production location is not limited to the above embodiment, and for example, only the first step and the engraving step for signing a green brick or message may be performed at the same location.
[0081]
【The invention's effect】
According to the present invention, a ceramic product in which the shape of a hand, a foot, a face or the like is transferred in a concave shape is placed on a pavement, so that it can be seen by many people. Moreover, even if a person walks on the ceramic product, the state is not permanently worn and the state is preserved semipermanently.
[0082]
In particular, ceramic products for pavements, in which three-dimensional shapes of infants' hands, feet, faces, etc. and details of fingerprints and other details are faithfully transferred, have not been able to be made so far. If you make a ceramic product for pavement, you can see it forever and always.
[0083]
Clay is reusable and can be pressed by hands, feet, faces, etc. without applying force or getting dirty even for infants and the elderly, so that even if it fails, it can be shaped as many times as possible. Can be collected.
[0084]
The reproducible convex shape is stable and can be semi-permanently stored, so it is possible to produce ceramic products for pavements repeatedly.
[0085]
If paper clay is used for the first concave mold and silicone rubber is used for the reproduced convex mold, the reproduced convex mold is pressed against the ceramic (raw brick) before firing from the process of collecting the shape of hands, feet, face, etc. Furthermore, the process of engraving handwritten characters and stamps can be performed in a short time without the need for special techniques. Furthermore, since it can be performed in the same place in a short time, it is possible to participate in the production of ceramic products for pavements, regardless of the number and age of participants, and without making the participants troublesome. become.
[Brief description of the drawings]
FIG. 1 is a view showing an embodiment of producing a first concave mold in the method according to the present invention.
FIG. 2 is a diagram showing an embodiment for producing a reproduction convex mold in the method according to the present invention.
FIG. 3 is a view showing an embodiment of producing a second concave mold and an embodiment of the produced pavement brick in the method according to the present invention.
[Explanation of symbols]
1: Transfer object
3: First concave mold
5: First molding material
7: Reproduction convex type
9: Second molding material
11: Raw brick
13: Second concave mold
15: brick

Claims (7)

A method for producing a ceramic product for pavement in which the shape of a transferred object such as a part of a body such as a hand, a foot, a face, etc.
A first mold material made of clay softer than the wet-extruded pre-fired ceramic is molded into a predetermined shape, the transferred material is pressed, a recess is formed, and a first recess mold is obtained. 1 process,
A fluid second molding material is poured into the first concave recess and cured to a state where it does not undergo plastic deformation when pressed against the pre-fired ceramic to obtain a reproducible convex shape of the transfer object. Two steps;
A third step of pressing the reproduced convex mold on the pre-fired ceramic to form a concave portion to obtain a second concave mold;
A fourth step of firing the second concave mold to obtain a final product;
A method for producing a ceramic product for pavements characterized by comprising: 2. The method for producing a ceramic product for pavement according to claim 1, wherein the first molding material is made of paper clay. The method for producing a ceramic product for pavement according to claim 2, wherein the paper clay has a moisture content of 30% when the object to be transferred is pressed. The method for producing a ceramic product for pavement according to any one of claims 1 to 3, wherein the second molding material is made of a resin. The method for producing a ceramic product for pavement according to claim 4, wherein the resin is silicone rubber. The method for producing a ceramic product for pavement according to any one of claims 1 to 3, wherein the second molding material is made of metal. The pavement according to any one of claims 1 to 6, wherein the transfer object is a part of a body such as a hand, a foot, or a face of a person having a weak pressing force such as an infant or an elderly person. To make ceramic products.

Images