Upper and lower die cores for compression molding of ancient building tiles

Abstract

The utility model relates to an upper and lower die core for compression molding of ancient building tiles, which comprises an upper die core and a lower die core, the upper die core is positioned right above the lower die core, the lower surface of the upper die core is provided with a groove, the upper surface of the lower die core is provided with a bulge, the lower surface of the upper die core is provided with a compression part, and the compression part is arranged on the lower surface of the upper die core. A curved surface is arranged at the joint of the groove and the press-forming part, the groove is composed of a plurality of inclined planes, the press-forming part is composed of a plurality of inclined planes, and the vertical distance between the highest point and the lowest point of the inclined planes of the groove is 2.5 mm. Based on the size difference design of the upper mold core and the lower mold core (the length and the width of the upper mold core are respectively 0.8 mm and 0.8 mm) and combined with the demolding inclination of the mold frame, the influence of the thickness of a tile blank and material expansion after pressing is effectively counteracted, it is guaranteed that no clamping stagnation exists between a formed tile and the mold, demolding is smooth, the ejection efficiency is improved by 30% or above, meanwhile, the mold is suitable for tile blanks with different thicknesses, and the surface flatness of a finished product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ancient building tile production technology, specifically to an upper and lower mold core for pressing and molding ancient building tiles. Background Technology

[0002] In the traditional field of ancient building tile manufacturing, the forming of tiles mainly relies on mold pressing technology, but existing technology has the following significant drawbacks:

[0003] Traditional mold cores are designed with equal dimensions. After mold closing, the thickness of the tile blank and the thermal expansion effect of the material can easily cause the mold core to jam with the tile. A large ejection force is required during demolding, which can cause damage to the edges and corners of the tile or scratches on the surface, resulting in a yield rate of less than 90%. In addition, the lack of a slope adaptation design in the mold frame further increases the demolding resistance, requiring frequent use of release agents, increasing production costs and the risk of environmental pollution.

[0004] In traditional craftsmanship, the antique-style overlapping patterns on tiles require manual carving or secondary processing, which is cumbersome and inconsistent, with a pattern depth error of ±0.5mm. This process takes up more than 40% of the production cycle, making it difficult to meet the needs of large-scale production, while also incurring high labor costs.

[0005] Fixing holes usually relies on drilling later. Because the tiles are brittle, drilling positioning deviation (error ≥1mm) can easily lead to cracking or misalignment, reducing the yield to below 85%. In addition, it adds processing equipment and time, reducing construction efficiency by 30%-50%. Utility Model Content

[0006] In order to solve the problems mentioned in the background art, the present invention provides an upper and lower mold core for pressing and molding ancient building tiles.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A set of upper and lower mold cores for pressing and forming ancient building tiles includes an upper mold core and a lower mold core. The upper mold core is located directly above the lower mold core. A groove is provided on the lower surface of the upper mold core, and a protrusion is provided on the upper surface of the lower mold core. A forming part is provided on the lower surface of the upper mold core. The connection between the groove and the forming part is curved. The groove is composed of multiple inclined planes, and the forming part is composed of multiple inclined planes. The vertical distance between the highest and lowest points of the inclined planes of the groove is 2.5 mm, and the vertical distance between the highest and lowest points of the inclined planes of the forming part is 1 mm. A first notch and a second notch are respectively provided diagonally on the upper mold core. A forming part is provided on one side of the forming part. There are two first pressing mechanisms. The first pressing mechanism is set on the lower surface of the upper mold core. The lower surface of the upper mold core is provided with a forming groove. The groove and the forming part are both located inside the forming groove. The protrusion is an inclined curved surface. The vertical distance between the highest point and the lowest point of the protrusion is 0.5mm. The lower mold core is provided with a third notch and a fourth notch at opposite corners. The first notch and the third notch are adapted to each other. The second notch and the fourth notch are adapted to each other. The upper surface of the lower mold core is provided with an embossed part. The protrusion is connected to the embossed part. The upper surface of the lower mold core is provided with two second pressing mechanisms. The first pressing mechanism is located directly above the second pressing mechanism.

[0009] Preferably, the groove is adapted to the protrusion.

[0010] Preferably, the groove, the forming part, and the forming slot constitute the engraving of the texture on the surface of the ancient building tile.

[0011] Preferably, the upper mold core has a length and width of 410.8mm and 265.8mm, respectively, and the lower mold core has a length and width of 410mm and 265mm, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Based on the size difference between the upper and lower mold cores (the upper mold core is 0.8mm larger in length and 0.8mm larger in width), combined with the demolding slope of the mold frame, the design effectively offsets the effects of the tile blank thickness and the material expansion after pressing, ensuring that there is no jamming between the formed tile and the mold, smooth demolding and an increase in ejection efficiency of more than 30%, while adapting to tile blanks of different thicknesses to ensure the flatness of the finished product surface.

[0014] 2. Through the inclined interlocking structure of grooves and protrusions, the traditional tile overlapping pattern is formed directly in one mold, without the need for later manual carving or secondary processing. The pattern is clear and natural, perfectly replicating the layered beauty of ancient building tiles. The complexity of the process is reduced by 50%, and the production cost is significantly saved.

[0015] 3. The synchronous punching of the first and second punching mechanisms pre-forms holes during the pressing process, with a hole position accuracy error of ≤0.5mm. This avoids problems such as tile cracking and misalignment caused by drilling deviation in traditional processes, increasing the yield rate to over 98%. Furthermore, the holes can be directly used for roof fixing, improving construction efficiency by 40%. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lower surface structure of the upper mold core of this utility model;

[0018] Figure 3 This is a schematic diagram of the upper surface structure of the lower mold core of this utility model.

[0019] In the figure: 1. Upper mold core; 2. Lower mold core; 3. Groove; 4. Protrusion; 5. Forming part; 6. First notch; 7. Second notch; 8. First pressing mechanism; 9. Forming groove; 10. Third notch; 11. Fourth notch; 12. Second pressing mechanism; 13. Embossing part. Detailed Implementation

[0020] Example

[0021] Please see Figure 1-3 A set of upper and lower mold cores for pressing and forming ancient building tiles includes an upper mold core 1 and a lower mold core 2. The upper mold core 1 is located directly above the lower mold core 2. The lower surface of the upper mold core 1 is provided with a groove 3, and the upper surface of the lower mold core 2 is provided with a protrusion 4. The lower surface of the upper mold core 1 is provided with a forming part 5. The connection between the groove 3 and the forming part 5 is a curved surface. The groove 3 is composed of multiple inclined planes, and the forming part 5 is composed of multiple inclined planes. The vertical distance between the highest and lowest points of the inclined planes of the groove 3 is 2.5 mm, and the vertical distance between the highest and lowest points of the inclined planes of the forming part 5 is 1 mm. The upper mold core 1 is provided with a first notch 6 and a second notch 7 at opposite corners. The forming part 5 is provided with two first notches on one side. The hole mechanism 8 is provided on the lower surface of the upper mold core 1. The lower surface of the upper mold core 1 is provided with a forming groove 9. The groove 3 and the forming part 5 are both located inside the forming groove 9. The protrusion 4 is an inclined curved surface. The vertical distance between the highest point and the lowest point of the protrusion 4 is 0.5mm. The lower mold core 2 is provided with a third notch 10 and a fourth notch 11 at opposite corners, which drive the first notch 6 and the third notch 10 to match, and the second notch 7 and the fourth notch 11 to match. The upper surface of the lower mold core 2 is provided with an embossed part 13. The protrusion 4 is connected to the embossed part 13. The upper surface of the lower mold core 2 is provided with two second hole mechanisms 12. The first hole mechanism 8 is located directly above the second hole mechanism 12.

[0022] The groove 3 and the protrusion 4 adopt complementary geometric structures. The angle of the inclined plane of the groove 3 and the slope of the side wall of the protrusion 4 are strictly matched to ensure precise fitting without misalignment during mold closing. This design ensures that the tile blank is subjected to uniform force during the pressing process, avoiding local tearing or blurring of the texture. The molding depth of the biomimetic overlapping texture is consistent to ±0.1mm, the texture clarity is improved by 25%, and the mold closing efficiency is improved by 15%, perfectly restoring the three-dimensional effect of traditional tile layering.

[0023] The groove 3 forms the recessed portion of the tile overlap pattern through inclined extrusion, the pressing part 5 presses the flat outline of the main area of ​​the tile surface, and the pressing groove 9 carves arc-shaped grooves or decorative lines on the edge of the tile. The three work together to form an engraved texture system. This integrated design completes complex textures such as antique water ripples and cloud patterns that would require multiple carvings in traditional processes in a single mold closing, improving processing efficiency by 70%, and controlling the texture depth tolerance within ±0.1mm. The finished product achieves an antique reproduction degree of over 95%, completely replacing manual finishing processes.

[0024] The upper mold core 1 is 0.8mm larger than the lower mold core 2 in both length and width. Combined with the demolding slope of the mold frame, it forms a gap space that adapts to the thickness of the tile blank and the expansion of the material. This design allows the tiles to separate smoothly along the slope direction during demolding, reduces the ejection force by 40%, avoids tile edge damage caused by demolding jamming, and ensures that the surface flatness tolerance of the finished product is ≤0.2mm. It is also compatible with tile blank thickness fluctuations of ±0.5mm and is suitable for large-scale continuous production of various materials such as clay and cement-based composite materials.

[0025] The working principle of this utility model is as follows: When using the upper and lower mold cores for pressing and forming ancient building tiles, the tile blank is first placed centered on the upper surface of the lower mold core 2. Then, the upper mold core 1 moves downward under the action of the driving mechanism, precisely closing with the lower mold core 2. During the mold closing process, the groove 3 of the upper mold core 1 and the protrusion 4 of the lower mold core 2 interlock. Through the pressure action of the inclined plane of the groove 3, the tile blank forms a raised biomimetic overlapping pattern, simulating the visual effect of traditional tile layers. At the same time, the pressing part 5 and the pressing groove 9 of the upper mold core 1 cooperate with the pressing part 13 of the lower mold core 2 to shape the upper and lower surfaces of the tile blank as a whole, ensuring uniform thickness and pressing out anti-slip or decorative textures. In addition, the first pressing hole mechanism 8 built into the upper mold core 1 and the second pressing hole mechanism 12 of the lower mold core 2 simultaneously press the tile blank during mold closing to determine the hole position and avoid unclear drilling positions later. After pressing, the upper mold core 1 returns to its original position, and the lower mold core 2 ejects the finished tile, achieving efficient processing from tile blank to finished ancient building tile in one go. Since the tile blank itself has a certain thickness, and the mold frame is designed with a demolding slope to avoid the mold core and tile blank getting stuck after pressing, the size of the upper mold core 1 is slightly larger than that of the lower mold core 2. The gap formed by the size difference, combined with the mold frame slope, ensures that the tile blank can be smoothly ejected and demolded after forming.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An upper and lower mold core for pressing and molding of old building tiles, comprising an upper mold core (1) and a lower mold core (2), characterized in that: The upper mold core (1) is located directly above the lower mold core (2), the lower surface of the upper mold core (1) is provided with a groove (3), the upper surface of the lower mold core (2) is provided with a protrusion (4), the lower surface of the upper mold core (1) is provided with a pressure-shaped part (5), the connecting part of the groove (3) and the pressure-shaped part (5) is a curved surface, the groove (3) is composed of multiple inclined planes, the pressure-shaped part (5) is composed of multiple inclined planes, the vertical distance between the highest point and the lowest point of the inclined plane of the groove (3) is 2.5mm, the vertical distance between the highest point and the lowest point of the inclined plane of the pressure-shaped part (5) is 1mm, the upper mold core (1) is provided with a first gap (6) and a second gap (7) at opposite corners, one side of the pressure-shaped part (5) is provided with two first pressure hole mechanisms (8), the first pressure hole mechanism (8) is arranged on the lower surface of the upper mold core (1), the lower surface of the upper mold core (1) is provided with a pressure-shaped groove (9), the groove (3) and the pressure-shaped part (5) are located inside the pressure-shaped groove (9), the protrusion (4) is an inclined curved surface, the vertical distance between the highest point and the lowest point of the protrusion (4) is 0.5mm, the lower mold core (2) is provided with a third gap (10) and a fourth gap (11) at opposite corners, the first gap (6) and the third gap (10) are matched, the second gap (7) is matched with the fourth gap (11), the upper surface of the lower mold core (2) is provided with a pressure texture part (13), the protrusion (4) is connected with the pressure texture part (13), the upper surface of the lower mold core (2) is provided with two second pressure hole mechanisms (12), the first pressure hole mechanism (8) is located directly above the second pressure hole mechanism (12).

2. The upper and lower mold core for pressing and forming an ancient building tile according to claim 1, characterized in that: The groove (3) is matched with the protrusion (4).

3. The upper and lower mold core for pressing and forming an ancient building tile according to claim 1, characterized in that: The groove (3), the pressure-shaped part (5) and the pressure-shaped groove (9) constitute the negative engraving of the surface texture of the ancient building tile.

4. The upper and lower mold core for pressing and forming an ancient building tile according to claim 1, characterized in that: The length and width of the upper mold core (1) are 410.8mm and 265.8mm respectively, and the length and width of the lower mold core (2) are 410mm and 265mm respectively.

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