Forming mold core of arc-shaped dovetail back pattern ceramic tile and dovetail back pattern ceramic tile
By designing an arc-shaped dovetail back pattern forming mold core, the problem of insufficient pull-out strength and flexural strength of dovetail back pattern tiles is solved, enhancing the adhesion and aesthetics of the tiles and reducing the phenomenon of the bottom showing through.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-03-13
AI Technical Summary
Existing dovetail back pattern ceramic tiles have limited improvement in tensile strength and flexural strength, and the backing is severely visible, affecting their aesthetics.
An arc-shaped dovetail back pattern molding core is used. Multiple molding protrusions are set on the soft surface, including a first protrusion and a second protrusion. The first side of the second protrusion is an arc surface that forms an acute angle with the soft surface. The surface of the second protrusion is inclined towards the center to form an arc-shaped dovetail groove, which enhances the adhesion of the adhesive and reduces the phenomenon of see-through.
It improves the tensile and flexural strength of the tiles, reduces the appearance of the tile showing through, maintains the aesthetic appeal, and enhances the physical bonding between the adhesive and the tiles.
Smart Images
Figure CN223989623U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceramic tile production technology, and in particular to a molding core for an arc-shaped dovetail back pattern ceramic tile and the dovetail back pattern ceramic tile. Background Technology
[0002] To increase the bonding area during tile installation, various patterns are designed on the back of tiles, commonly known as back patterns. Chinese patent document CN202410810734X discloses a molding core for dovetail-patterned tiles and the tiles formed from this core. The disclosed molding core for dovetail-patterned tiles can form three-way dovetail grooves on the back of the tile body, allowing the dovetails on the back of the formed tile product to generate adhesion in at least three directions. When the tile adhesive is applied into the dovetail grooves, the adhesive in each groove can penetrate into the grooves in multiple directions, enhancing the physical bonding between the adhesive and the tile product and greatly increasing the pull-out strength of the tile.
[0003] However, although the pull-out strength of the tiles formed by the mold core of the publicly disclosed dovetail back pattern tiles can be improved, there is still room for improvement in the pull-out strength. In addition, the improvement in the flexural strength of the tiles is limited. Furthermore, the existing dovetail back pattern tiles have a serious see-through phenomenon, which can cause the surface pattern of the tiles to be distorted when used in some high-light environments, thus reducing the aesthetic appeal of the tiles.
[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content
[0005] The present invention provides a molding core for an arc-shaped dovetail back pattern ceramic tile and a dovetail back pattern ceramic tile, aiming to further improve the tensile strength of the dovetail back pattern ceramic tile and solve the problem that the existing molding cores for dovetail back pattern ceramic tiles have limited improvement in flexural strength and serious bottom penetration.
[0006] To achieve the above objectives, the solution provided by this utility model is as follows:
[0007] A molding core for an arc-shaped dovetail back pattern ceramic tile includes a rigid base layer and a flexible surface layer adhered to the rigid base layer. The flexible surface layer has a central region with a radius of R centered on the center of the flexible surface layer. Multiple molding protrusions are provided on the side of the flexible surface layer not attached to the rigid base layer. Each molding protrusion includes a first protrusion located within the central region and a second protrusion located outside the central region. The second protrusion has a first side facing away from the center of the flexible surface layer, the first side being an arc surface, and the angle between the first side and the flexible surface layer being an acute angle.
[0008] Preferably, the second protrusion is a trapezoidal protrusion; the second protrusion has a second side surface near the center of the soft surface, the second side surface is an arc surface protruding toward the center of the soft surface, and the angle A1 between the waist surface of the second protrusion and the soft surface is an acute angle.
[0009] Preferably, the first protrusion is a trapezoidal protrusion, and the first protrusion has a third side surface near the center of the soft surface layer, and a fourth side surface away from the center of the soft surface layer. The angle A2 between the third side surface and the soft surface layer is 88° to 90°, the angle A3 between the fourth side surface and the soft surface layer is 88° to 90°, and the angle A4 between the waist surface of the first protrusion and the soft surface layer is 88° to 90°.
[0010] Preferably, the shaped protrusions are arranged radially around the center of the soft surface; the third side is an arc surface protruding toward the center of the soft surface; and the fourth side is also an arc surface.
[0011] Preferably, the surface of the second protrusion is inclined upward toward the center of the soft surface layer.
[0012] Preferably, the lateral distance L1 between the upper and lower edges of the first side is 0.3mm to 2.0mm, and the lateral distance L2 between the upper and lower edges of the waist surface of the second protrusion is 0.3mm to 2.0mm.
[0013] Preferably, the height difference H1 between the upper and lower edges of the first side is 0.5mm to 0.6mm, and the height difference H2 between the upper and lower edges of the second side is 1.2mm to 1.4mm.
[0014] Preferably, the soft surface layer includes a surface body and a plurality of bottom ribs that are attached to the surface body. The horizontal cross-sectional shape of the bottom ribs is the same as the horizontal cross-sectional shape of the molded protrusions, and the molded protrusions are attached to the center position of each bottom rib.
[0015] Preferably, the thickness H3 of the bottom reinforcement bar is 0.2mm to 0.4mm, and the distance L3 between two adjacent bottom reinforcement bars is 2.0mm to 3.0mm.
[0016] This utility model provides a dovetail back pattern ceramic tile, which is formed by pressing the aforementioned arc-shaped dovetail back pattern ceramic tile core.
[0017] Beneficial effects:
[0018] This invention provides a molding core for an arc-shaped dovetail back-patterned ceramic tile. By making the first side of the second protrusion away from the center of the soft surface of the tile an arc surface, and making the angle between the arc surface and the soft surface of the tile acute, the second protrusion can apply pressure to the tile body to form a concave arc-shaped groove when it expands and deforms under pressure. Compared with ordinary dovetail grooves, the arc-shaped groove has an arc-shaped groove surface. When the adhesive is applied into the arc-shaped dovetail groove, the arc-shaped groove surface forms a gripping force in more directions, thereby enhancing the physical bonding between the adhesive and the tile product and further improving the tensile strength of the tile.
[0019] Furthermore, by tilting the surface of the second protrusion upwards towards the center of the soft surface layer, when the second protrusion forms an arc-shaped dovetail groove on the back of the ceramic tile, the bottom surface of the arc-shaped dovetail groove also tilts upwards. Since the bottom surface of the arc-shaped dovetail groove is tilted upwards, its area is larger than when the groove surface is horizontal. This increases the contact area between the adhesive and the bottom surface of the arc-shaped dovetail groove, thereby improving the flexural strength of the tile and reducing the appearance of the dovetail back pattern, thus preserving the tile's aesthetic appeal.
[0020] This utility model also provides a dovetail back pattern ceramic tile, which is formed by pressing the aforementioned arc-shaped dovetail back pattern ceramic tile core. Compared with existing dovetail back pattern ceramic tiles, the tensile strength and flexural strength of the ceramic tile provided by this utility model can be further improved. In addition, without affecting the flexural strength and tensile strength of the ceramic tile, it can also reduce the phenomenon of the dovetail back pattern ceramic tile showing through, and will not reduce the aesthetics of the ceramic tile. Attached Figure Description
[0021] Figure 1 This utility model provides the design of a molding core for an arc-shaped dovetail back pattern ceramic tile. Figure 1 .
[0022] Figure 2 This is a top view of the first protrusion.
[0023] Figure 3 This is a cross-sectional view of the first protrusion.
[0024] Figure 4 This is a top view of the second protrusion.
[0025] Figure 5 This is a schematic diagram showing the second protrusion in contact with the back of the ceramic tile body.
[0026] Figure 6 This utility model provides the design of a molding core for an arc-shaped dovetail back pattern ceramic tile. Figure 2 .
[0027] Explanation of icon numbers:
[0028] 1-Hard base layer; 2-Soft surface layer; 211-Central area; 3-First convex part; 301-Third side surface; 302-Fourth side surface; 303-Waist surface of the first convex part; 4-Second convex part; 401-First side surface; 402-Second side surface; 403-Waist surface of the second convex part; 5-Bottom rib; 6-Ceramic tile body. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0031] It should also be noted that when a component is referred to as "fixed to" or "attached to" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.
[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0033] Please see Figures 1 to 6This utility model provides a molding core for an arc-shaped dovetail back pattern ceramic tile, comprising a rigid base layer 1 and a flexible surface layer 2 bonded to the rigid base layer 1. The rigid base layer 1 may have a certain thickness and approximately the same length and width dimensions as the ceramic tile to be molded. The flexible surface layer 2 has approximately the same length and width dimensions as the ceramic tile to be molded, and has a central region 211 with a radius R centered at the center of the flexible surface layer 2. Multiple molding protrusions are provided on the side of the flexible surface layer 2 not bonded to the rigid base layer 1. During tile pressing, the molding protrusions can form a dovetail groove on the back of the ceramic tile body.
[0034] Furthermore, the molded protrusion includes a first protrusion 3 located within the central region 211 and a second protrusion 4 located outside the central region 211. The structure and arrangement of the first protrusion 3 can adopt the structure and arrangement of the first protrusion 3 in the mold core of a previously disclosed dovetail-back patterned ceramic tile. As for the second protrusion 4, its overall shape is also trapezoidal, and the second protrusion 4 has a first side surface 401 located away from the center of the soft surface layer 2. Except for the first side surface 401, the other surfaces of the second protrusion 4 can be configured the same as those of existing second protrusions.
[0035] Furthermore, the first side surface 401 is curved, and the angle between the first side surface 401 and the soft surface layer 2 is an acute angle. When the second protrusion 4 is compressed and expands, each surface of the second protrusion 4 will undergo lateral expansion deformation; and since the first side surface 401 is curved, when it expands and deforms, it can apply pressure to the blank to form a concave arc-shaped groove. Compared with ordinary dovetail grooves, arc-shaped grooves have arc-shaped groove surfaces. When the adhesive is applied into the arc-shaped dovetail groove, the arc-shaped groove surface forms a gripping force in more directions, thereby enhancing the physical bonding between the adhesive and the tile product, and further improving the tensile strength of the tile.
[0036] like Figure 1 , Figures 4 to 5 As shown, in a preferred embodiment of this utility model, the second protrusion 4 has a second side surface 402 located near the center of the soft surface layer 2. The angle A1 between the waist surface of the second protrusion 4 and the soft surface layer 2 is an acute angle. Therefore, when the second protrusion 4 is compressed and expands, it can form more than one concave groove within the dovetail groove. Since the second side surface 402 is an arc-shaped surface protruding towards the center of the soft surface layer 2, the angle between the second side surface 402 and the soft surface layer 2 is an obtuse angle or close to a right angle. Thus, even if the ceramic tile expands outward, the chance of the second side surface 402 contacting the dovetail groove wall is reduced, thereby reducing the possibility of groove wall damage.
[0037] In addition, since the second side 402 is also curved, the dovetail groove formed by the second protrusion 4 on the back of the tile is more aesthetically pleasing in a petal shape.
[0038] like Figures 1 to 3 As shown, in a preferred embodiment of this utility model, the first protrusion 3 is a trapezoidal protrusion, and the first protrusion 3 has a third side surface 301 near the center of the soft surface layer 2, and a fourth side surface 302 away from the center of the soft surface layer 2. The angle A2 between the third side surface 301 and the soft surface layer 2 is 88°~90°, the angle A3 between the fourth side surface 302 and the soft surface layer 2 is 88°~90°, and the angle A4 between the waist surface of the first protrusion 3 and the soft surface layer 2 is 88°~90°. By making each side surface of the first protrusion 3 nearly perpendicular to the soft surface layer 2, even if the expansion of the central part of the ceramic tile body corresponding to the central region 211 is small, during the demolding process, the groove wall surface formed on the back of the ceramic tile body corresponding to the first protrusion 3 is unlikely to come into contact with the side surface of the first protrusion 3 that moves upward out of the groove, thus avoiding damage and cracking of the groove wall.
[0039] Similar to the existing dovetail back pattern ceramic tile molding core, the molding protrusions are arranged radially around the center of the soft surface layer 2. The specific arrangement rules can be referenced from the existing dovetail back pattern ceramic tile molding core and its attachments. Figure 1 .
[0040] like Figure 1 , Figure 2 and Figure 6 As shown, in a preferred embodiment of this utility model, the third side 301 is an arc surface protruding towards the center of the soft surface layer 2; the fourth side 302 is also an arc surface, so the groove shape formed by the first protrusion 3 on the back of the tile is also petal-shaped. When the formed protrusions are arranged radially around the center of the soft surface layer 2, the overall texture on the back of the tile presents a petal-shaped pattern radiating outwards from the tile, which can improve the overall aesthetics of the tile product and attract consumers to purchase the tile product.
[0041] like Figure 5 As shown, in a preferred embodiment of this invention, the surface of the second protrusion 4 is inclined upward toward the center of the soft surface layer 2. Therefore, when the second protrusion 4 forms an arc-shaped dovetail groove on the back of the ceramic tile body, the bottom surface of the arc-shaped dovetail groove is also inclined upward (when the back of the ceramic tile body is facing upward). When the bottom surface of the arc-shaped dovetail groove is inclined upward, its area is larger than when the groove surface is horizontal, thereby increasing the contact area between the adhesive and the bottom surface of the arc-shaped dovetail groove, thus improving the flexural strength of the ceramic tile.
[0042] In addition, when the bottom surface of the curved dovetail groove is inclined, the depth of the curved dovetail groove can be made shallower. This can reduce the phenomenon of the bottom showing through the dovetail back pattern without affecting the flexural strength and tensile strength of the tile, and will not reduce the aesthetics of the tile.
[0043] like Figure 5 As shown, in a preferred embodiment of this utility model, the lateral distance L1 between the upper and lower edges of the first side surface 401 is 0.3mm to 2.0mm, and the lateral distance L2 between the upper and lower edges of the waist surface of the second protrusion 4 is 0.3mm to 2.0mm. Thus, by using a forming mold core, dovetail grooves with multiple concave directions can be formed on the back of ceramic tile blanks of different thicknesses and lengths. The ceramic blanks of different thicknesses and lengths can be large ceramic slabs of 900x1800mm, 2400x1200mm, etc., or medium ceramic slabs of 400x800mm, 300x600mm, and 600x600mm, etc.
[0044] like Figure 5 As shown, in a preferred embodiment of this utility model, the height difference H1 between the upper and lower edges (the edges in contact with the soft surface layer 2) of the first side 401 is 0.5mm to 0.6mm, and the height difference H2 between the upper and lower edges of the second side 402 is 1.2mm to 1.4mm. Thus, the thickness of the second protrusion 4 is within the range of H1 to H2. When the thickness of the second protrusion 4 is within the above range, the see-through phenomenon of the dovetail back pattern tile will not be serious, thereby ensuring that the aesthetics of the tile will not be reduced.
[0045] like Figure 2 , Figure 4 as well as Figure 5 As shown, in a preferred embodiment of this utility model, the soft surface layer 2 includes a surface body and a plurality of bottom ribs 5 that are attached to the surface body. The horizontal cross-sectional shape of the bottom ribs 5 is the same as the horizontal cross-sectional shape of the forming protrusions, and the forming protrusions are attached to the center positions of each bottom rib 5. When the forming mold core forms the back texture, the portion of the soft surface layer 2 located between adjacent bottom ribs 5 can form a raised texture, which is used to coat the alumina base slurry, thereby preventing the back of the tile from sticking to the roller during the firing process.
[0046] like Figure 5 As shown, in a preferred embodiment of this utility model, the thickness H3 of the bottom rib 5 is 0.2mm to 0.4mm, and the distance L3 (i.e. the width of the ridge) between two adjacent bottom ribs 5 is 2.0mm to 3.0mm. This reduces the amount of alumina base slurry used while ensuring that the arc-shaped dovetail groove can hold enough adhesive, thereby ensuring stronger adhesion between the ceramic tile and the surface of the building being constructed.
[0047] This utility model provides a dovetail back pattern ceramic tile, which is formed by pressing the aforementioned arc-shaped dovetail back pattern ceramic tile core. Compared with existing dovetail back pattern ceramic tiles, the tensile strength and flexural strength of the ceramic tile provided by this utility model can be further improved. In addition, without affecting the flexural strength and tensile strength of the ceramic tile, it can also reduce the phenomenon of the dovetail back pattern ceramic tile showing through, and will not reduce the aesthetics of the ceramic tile.
[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A forming core for an arc-shaped dovetail back pattern ceramic tile, comprising a hard base layer (1) and a soft surface layer (2) adhered to the hard base layer (1); the soft surface layer (2) has a central area (211) with a center at the center of the soft surface layer (2) and a radius of R; a plurality of forming protrusions are arranged on the side of the soft surface layer (2) not adhered to the hard base layer (1); the forming protrusions comprise a first protrusion (3) located in the central area (211) and a second protrusion (4) located outside the central area (211); characterized in that, The second convex part (4) has a first side (401) facing away from the center of the soft surface layer (2), the first side (401) is an arc surface, and the angle between the first side (401) and the soft surface layer (2) is an acute angle.
2. The forming mold core of the curved dovetail back patterned tile according to claim 1, characterized in that, The second convex part (4) is a trapezoidal convex part; the second convex part (4) has a second side (402) close to the center of the soft surface layer (2), the second side (402) is an arc surface protruding towards the center of the soft surface layer (2), and the angle A1 between the waist surface (403) of the second convex part (4) and the soft surface layer (2) is an acute angle.
3. The forming mold core of the arched dovetail back patterned tile according to claim 1, wherein, The first convex part (3) is a trapezoidal convex part, and the first convex part (3) has a third side (301) close to the center of the soft surface layer (2), and a fourth side (302) facing away from the center of the soft surface layer (2), the angle A2 between the third side (301) and the soft surface layer (2) is 88°-90°, the angle A3 between the fourth side (302) and the soft surface layer (2) is 88°-90°, and the angle A4 between the waist surface (303) of the first convex part (3) and the soft surface layer (2) is 88°-90°.
4. The forming mold core of the arched dovetail back patterned tile according to claim 3, wherein, The shaped convex part is radially arranged around the center of the soft surface layer (2); the third side (301) is an arc surface protruding towards the center of the soft surface layer (2); and the fourth side (302) is also an arc surface.
5. The forming mold core for arc-shaped dovetail back patterned tiles according to claim 1, wherein, The surface (404) of the second convex part (4) is inclined upward towards the center of the soft surface layer (2).
6. The forming mold core for arc-shaped dovetail back patterned tiles according to claim 1, characterized in that, The transverse distance L1 between the upper edge and the lower edge of the first side (401) is 0.3mm-2.0mm, and the transverse distance L2 between the upper edge and the lower edge of the waist surface (403) of the second convex part (4) is 0.3mm-2.0mm.
7. The forming mold core of the arc-shaped dovetail back patterned tile according to claim 2, characterized in that, The height difference H1 between the upper edge and the lower edge of the first side (401) is 0.5mm-0.6mm, and the height difference H2 between the upper edge and the lower edge of the second side (402) is 1.2mm-1.4mm.
8. The forming mold core of the arc-shaped dovetail back patterned tile according to claim 1, wherein, The soft surface layer (2) comprises a surface layer body (21) and a plurality of bottom ribs (22) attached to the surface layer body (21), the horizontal cross-sectional shape of the bottom rib (22) is the same as that of the shaped convex part, and the shaped convex part is attached to the center of each bottom rib (22).
9. The forming mold core of the arched dovetail back patterned tile according to claim 8, wherein, The thickness H3 of the bottom rib (22) is 0.2mm-0.4mm, and the distance L3 between adjacent two bottom ribs (22) is 2.0mm-3.0mm.
10. A dovetail back texture ceramic tile, characterized by, It is pressed by the shaped mold core of the arc-shaped dovetail back texture ceramic tile according to any one of claims 1-9.