Porous lattice brick forming mold

Abstract

The utility model relates to porous lattice brick forming die belongs to forming die technical field, including roof, side mould, bottom plate, model outer cover, workbench, the installation groove in workbench is equipped with the axle plate, is connected with a plurality of core shaft on the axle plate, the side mould is divided into a plurality of blocks, the both sides of side mould are equipped with the V type upper ejector rod that cooperates with it, the shape of the outside wall of upper ejector rod is the shape that cooperates with side mould inboard wall, the axle plate is equipped with the through -hole that supplies the lower end of upper ejector rod to pass, the lower end of upper ejector rod is connected with lower ejector rod board, the top of lower ejector rod board is equipped with the V type groove that cooperates with upper ejector rod board, after embedding V type groove, upper ejector rod is welded fixedly. The utility model side mould adopts the design of block type, is convenient for processing, replacement and reuse, has shortened the processing cycle, has reduced maintenance cost, upper ejector rod adopts V type structure, cooperates the embedding welding technology of special -purpose ejector rod board, has reduced processing and welding deformation, has improved the strength, rigidity and service life of ejector rod, and further improved the forming efficiency.

Description

Technical Field

[0001] This utility model relates to a mold for forming porous checker bricks, and belongs to the field of molding mold technology. Background Technology

[0002] Porous checker bricks are the core heat storage element in the regenerator of a hot blast stove, and the mainstream type is a regular hexagonal honeycomb structure, such as... Figure 1 As shown. The core requirement of its production process is to ensure the precision and density of the brick's pores. Currently, the industry generally uses machine pressing for production.

[0003] Due to the complex external contour structure of the forming side mold, with 6 curved surfaces with arc grooves, the existing porous checker brick forming mold has the following shortcomings in actual use: First, the side mold is mostly an integral structure, which is not easy to process and cannot be replaced or reused; Second, the top rod structure is not reasonably designed, resulting in insufficient strength and rigidity, which makes it easy to deform during long-term machine pressing, which not only affects the forming efficiency but also leads to deviations in brick blank size. Utility Model Content

[0004] This utility model provides a porous checker brick forming mold to solve the problems mentioned in the background art.

[0005] This utility model relates to a multi-hole checker brick forming mold, including a top plate, a side mold, and a bottom plate. The side mold has a mold outer sleeve on its outer side and a hexagonal inner side wall. Each inner side wall has a forming boss. A worktable is provided below the mold outer sleeve. A shaft plate is provided in the mounting groove on the worktable. Multiple mandrels are connected to the shaft plate. The side mold is divided into multiple equal parts. V-shaped upper ejector rods are provided on both sides of the side mold. The outer side wall of the upper ejector rod is shaped to match the inner side wall of the side mold. The shaft plate has a through-hole for the lower end of the upper ejector rod to pass through. The lower end of the upper ejector rod is connected to a lower ejector plate. The top of the lower ejector plate has a V-shaped groove that matches the upper ejector rod. The upper ejector rod is embedded in the V-shaped groove and then welded and fixed.

[0006] As a preferred embodiment, the outer end of the forming boss at the edge of each side mold extends to the edge of the side mold. This prevents the forming boss at the edge from being distributed across two side molds, which would affect the forming effect of the outer wall groove after the porous checker brick is formed. The side mold is divided into 6 or 3 equal parts. Dividing the side mold into 6 or 3 equal parts significantly reduces the processing difficulty and shortens the processing cycle. At the same time, when a side mold becomes worn, that side mold can be replaced individually without replacing the entire mold, realizing the reuse of the side mold and reducing maintenance costs.

[0007] As a preferred embodiment, the bottom plate has a forming female recess at the top and the top plate has a forming male boss at the bottom.

[0008] As a preferred embodiment, a pressure plate is provided below the shaft plate, which is placed in a mounting slot on the worktable. A pad is provided below the base plate, and the top of the upper push rod contacts the bottom of the pad. The pad is mainly used to adjust the position of the bricks and to protect the base plate.

[0009] As a preferred embodiment, the top of the shaft plate is provided with multiple threaded holes, and the lower end of the mandrel is provided with a threaded connection section that mates with the threaded holes. This threaded connection method makes the connection between the mandrel and the shaft plate more secure, while also facilitating the disassembly and replacement of the mandrel. When the mandrel is worn or damaged, it can be quickly replaced, improving the maintenance efficiency of the mold.

[0010] As a preferred option, the mandrel is conical with a diameter at the upper end smaller than that at the lower end. The conical mandrel facilitates demolding and is also suitable for forming conical holes.

[0011] As a preferred option, the mandrel is made of high-carbon, high-chromium, and highly wear-resistant cold work die steel, and each upper ejector pin is welded from two carbon steel plates into a V-shape. After air quenching, the cold work die steel has extremely high hardness, excellent wear resistance, and strong hardenability, making it less prone to deformation and effectively preventing brick blank cracks, thus extending the service life of the mandrel.

[0012] This utility model has the following beneficial effects:

[0013] The side mold adopts a modular design, which is divided into multiple equal parts, making it easy to process, replace and reuse. This shortens the processing cycle, reduces maintenance costs, and solves the problems of high processing difficulty and high maintenance cost of existing integral side molds.

[0014] The upper ejector rod adopts a V-shaped structure, combined with the inlay welding process of a special ejector plate, which reduces processing and welding deformation, improves the strength, rigidity and service life of the ejector rod, and thus improves molding efficiency; in addition, the outer wall of the upper ejector rod is adapted to the inner wall of the side mold, which facilitates the guiding adaptation when the upper ejector rod is ejected. Attached Figure Description

[0015] Figure 1 A schematic diagram of the top structure of a porous checker brick;

[0016] Figure 2 A schematic diagram of the main structure of this utility model;

[0017] Figure 3 for Figure 2 Top view of the middle section structure;

[0018] Figure 4 This is a structural schematic diagram of the upper push rod, shaft plate, lower push rod plate, and pressure plate.

[0019] In the diagram: 1. Top plate; 2. Perforated grid brick; 3. Side mold; 4. Mold outer shell; 5. Base plate; 6. Worktable; 7. Shaft plate; 8. Pressure plate; 9. Lower ejector plate; 10. Upper ejector; 11. Pad plate; 12. Mandrel; 13. Forming boss; 14. Threaded hole; 15. V-groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 2 to 4 As shown, the porous checker brick forming mold of this utility model includes a top plate 1, a side mold 3, and a bottom plate 5. The side mold 3 is provided with a model outer sleeve 4 on its outer side. The inner side wall of the side mold 3 is hexagonal, and each inner side wall is provided with a forming boss. A worktable 6 is provided below the model outer sleeve 4. A shaft plate 7 is provided in the mounting groove on the worktable 6. Multiple mandrels 12 are connected to the shaft plate 7. The side mold 3 is divided into multiple pieces. V-shaped upper ejector rods 10 are provided on both sides of the side mold 3 to cooperate with it. The outer side wall of the upper ejector rod 10 is shaped to cooperate with the inner side wall of the side mold 3. The shaft plate 7 is provided with a through hole for the lower end of the upper ejector rod 10 to pass through. The lower end of the upper ejector rod 10 is connected to a lower ejector plate 9. The top of the lower ejector plate 9 is provided with a V-shaped groove 15 to cooperate with the upper ejector rod 10. The upper ejector rod 10 is embedded in the V-shaped groove 15 and then welded and fixed.

[0022] Working principle: The top plate 1 is connected to the punch, which is connected to the brick press. The lower push rod plate 9 is connected to the lower pressing cylinder. During installation, the mandrel 12 is fixed to the shaft plate 7. Multiple side molds 3 are spliced ​​and installed inside the mold outer sleeve 4, ensuring that the side molds 3 fit tightly. Then, the bottom plate 5 is placed on the mandrel 12 and inserted into the inner hole of the side mold 3. Then, the top plate 1 rises and the lower push rod plate 9 descends, placing the forming blank into the forming cavity formed by the side molds 3 and the bottom plate 5. The brick press is then started. The top plate 1 applies downward pressure, while the lower hydraulic cylinder rises. The lower ejector plate 9 drives the upper ejector 10 to apply upward pressure, achieving bidirectional pressure. Under pressure, the blank adheres to the forming boss and mandrel 12, forming a porous grid brick 2. After forming, the top plate 1 returns to its original position, the lower ejector plate 9 rises, driving the upper ejector 10 upward. The bottom plate 5 supports the side mold 3, and the porous grid brick 2 separates from the mold cavity and mandrel 12. Then, the porous grid brick 2 can be removed, and the lower ejector plate 9 descends back to its original position.

[0023] In Example 2, based on Example 1, the outer end of the forming boss at the edge of each side mold 3 extends to the edge of the side mold 3, dividing the side mold 3 into 6 or 3 equal pieces. During processing, a special template for the side mold 3 is used for marking to ensure that the six side molds 3 have consistent dimensions and precision. After machining, heat treatment, and other processes are completed, they are assembled. During assembly, the assembly gap is ensured to coincide with the edge of the brick blank to prevent the brick blank from forming a straight platform due to the assembly gap during molding.

[0024] The bottom plate 5 has a forming female recess at the top and a forming male protrusion 13 at the bottom of the top plate 1, which can form letter mouths.

[0025] A pressure plate 8 is provided below the shaft plate 7. The pressure plate 8 is placed in the mounting groove on the worktable 6. The pressure plate 8 also has a through hole. A pad plate 11 is provided below the bottom plate 5. The top of the upper push rod 10 contacts the bottom of the pad plate 11. The mandrel 12 is used to form the honeycomb channels of the porous checker brick 2. The top plate 1, bottom plate 5 and pad plate 11 are all provided with holes that mate with the mandrel 12.

[0026] The top of the shaft plate 7 is provided with multiple threaded holes 14, and the lower end of the mandrel 12 is provided with a threaded connection section that mates with the threaded holes 14. The mandrel 12 is made of cold work die steel Cr12MoV, which is a high-carbon, high-chromium, and high-wear-resistant material. After air quenching, it has extremely high hardness, excellent wear resistance and strong hardenability, low residual austenite content, good dimensional stability, and is not easily deformed. This effectively avoids cracks in the brick blank and extends the service life of the mandrel 12.

[0027] The mandrel 12 is a cone shape with a diameter at the upper end smaller than that at the lower end.

[0028] The mandrel 12 is made of high-carbon, high-chromium, and highly wear-resistant cold work die steel. Each upper ejector pin 10 is welded from two carbon steel plates into a V-shape. Each upper ejector pin 10 is welded from two 45# carbon steel plates into a V-shape. 45# carbon steel has high strength and good machinability, which can increase the strength and rigidity of the upper ejector pin 10. The upper ejector pin 10 is first welded into a "V" shape and then machined. The lower ejector pin plate 9 is milled with an inner V-groove 15 with a depth of 20mm. The upper ejector pin 10 is then embedded in the groove and welded. This structural design can reduce deformation during machining and welding, and improve the service life and forming efficiency of the upper ejector pin 10.

[0029] 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.

[0030] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A perforated checker brick forming mold, comprising a top plate (1), a side mold (3), and a bottom plate (5), wherein a mold outer sleeve (4) is provided on the outer side of the side mold (3), the inner side wall of the side mold (3) is hexagonal, and a forming boss is provided on each inner side wall; a worktable (6) is provided below the mold outer sleeve (4), and a shaft plate (7) is provided in the mounting groove on the worktable (6), and multiple mandrels (12) are connected to the shaft plate (7), characterized in that: The side mold (3) is divided into multiple sections. V-shaped upper ejector rods (10) are provided on both sides of the side mold (3) to cooperate with it. The outer side wall of the upper ejector rod (10) is shaped to cooperate with the inner side wall of the side mold (3). The shaft plate (7) is provided with a through hole for the lower end of the upper ejector rod (10) to pass through. The lower end of the upper ejector rod (10) is connected to the lower ejector plate (9). The top of the lower ejector plate (9) is provided with a V-shaped groove (15) to cooperate with the upper ejector rod (10). The upper ejector rod (10) is embedded in the V-shaped groove (15) and then welded and fixed.

2. The porous checker brick forming mold according to claim 1, characterized in that: The outer end of the forming boss at the edge of each side mold (3) extends to the edge of the side mold (3), and the side mold (3) is divided into 6 or 3 pieces.

3. The porous checker brick forming mold according to claim 1, characterized in that: The bottom plate (5) is provided with a molding female recess at the top and a molding male boss (13) at the bottom of the top plate (1).

4. The porous checker brick forming mold according to claim 1, characterized in that: A pressure plate (8) is provided below the shaft plate (7). The pressure plate (8) is placed in the mounting groove on the workbench (6). A pad (11) is provided below the bottom plate (5). The top of the upper push rod (10) contacts the bottom of the pad (11).

5. The porous checker brick forming mold according to claim 1, characterized in that: The top of the shaft plate (7) is provided with multiple threaded holes (14), and the lower end of the spindle (12) is provided with a threaded connection section that mates with the threaded holes (14).

6. The porous checker brick forming mold according to claim 1, characterized in that: The mandrel (12) is a cone with a diameter at the upper end smaller than that at the lower end.

7. The porous checker brick forming mold according to claim 1, characterized in that: The mandrel (12) is made of high carbon, high chromium and high wear-resistant cold work die steel. Each upper push rod (10) is made of two carbon steel plates welded into a V shape.

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