Mechanical pressing die for producing refractory bricks

Abstract

A machine pressing die for producing refractory bricks relates to the technical field of forming of refractory brick blanks and comprises an outer die sleeve and an inner die sleeve which are arranged in an inner cavity A of a die cavity, blocking plates are arranged between the four inner walls of the inner cavity A of the die cavity and the outer wall of the outer die sleeve, the outer die sleeve is a square box body with an opening in the upper portion, and the inner die sleeve is arranged in an outer die cavity B of the outer die sleeve. The inner die sleeve is composed of a front panel A, a rear panel A, a left panel A, a right panel A, an upper panel A and a lower panel A. The left panel A and the right panel A are matched with steps on the front panel A and the rear panel A through clamping tables respectively, and chamfers are arranged on the upper edges of the inner faces of the front panel A, the rear panel A, the left panel A, the right panel A, the upper panel A and the lower panel A. The upper panel A and the lower panel A are respectively positioned at the upper part and the lower part among the front panel A, the rear panel A, the left panel A and the right panel A; the die is simple in structure and convenient to use, and the die cavity does not need to be disassembled back and forth and can be assembled and disassembled only by disassembling the inner die sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of the forming of refractory brick blanks, in particular to a mechanical pressing die for producing refractory bricks. Background Art

[0002] As is well known, refractory bricks are building materials with high temperature resistance performance and are usually used in fields such as high-temperature equipment and industrial furnaces. At present, in the mechanical pressing forming of refractory bricks, the brick blank raw materials need to withstand the strong pressure of a large-tonnage brick pressing machine to ensure the strength of the refractory bricks. However, at the same time, the mechanical pressing die will also correspondingly bear huge horizontal acting forces. In order to ensure the service life of the die, the die is generally made large and thick and most are integral. Using the above methods, the main technical problems are as follows: ① These dies are huge and heavy, and the installation and disassembly will waste a lot of manpower, reducing the production efficiency of refractory bricks; ② Each brick type requires a matching die, and a large number of dies need to be made to adapt to various brick types, increasing a large amount of cost funds for the production factory; ③ After the die reaches the service life, a new die needs to be replaced, and the huge new die will also waste a lot of manpower and material resources; there is an urgent need for a method that can solve the above problems nowadays. Summary of the Invention

[0003] In order to overcome the deficiencies in the background art, the utility model discloses a mechanical pressing die for producing refractory bricks.

[0004] In order to achieve the above-mentioned invention purpose, the utility model adopts the following technical solutions:

[0005] A mechanical pressing die for producing refractory bricks includes an outer die sleeve and an inner die sleeve arranged in the inner cavity A of the die cavity. Plug plates are provided between the four inner walls of the inner cavity A of the die cavity and the outer wall of the outer die sleeve. The outer die sleeve is a square box body with an open upper part. The inner die sleeve is arranged in the outer die cavity B of the outer die sleeve. The inner die sleeve is of a square box body structure and is composed of a front panel A, a rear panel A, a left panel A, a right panel A, an upper panel A and a lower panel A. Concave steps are provided on both sides of the inner surfaces of the front panel A and the rear panel A. Concave clamping platforms are provided on both sides of the inner surfaces of the left panel A and the right panel A. The left panel A and the right panel A are respectively matched with the steps on the front panel A and the rear panel A through the clamping platforms. Chamfers are provided at the upper edges of the inner surfaces of the front panel A, the rear panel A, the left panel A, the right panel A, the upper panel A and the lower panel A. The upper panel A and the lower panel A are respectively located at the upper part and the lower part between the front panel A, the rear panel A, the left panel A and the right panel A.

[0006] For the mechanical pressing die for producing refractory bricks, the die cavity is set in a "convex" shape, the inner cavity A is arranged at the center of the upper part thereof, the inner cavity A is a square through hole, the outer die sleeve is arranged in the through hole, at least two bolt holes are provided on both side step surfaces, and the die cavity is fixedly connected to the bearing platform of the brick pressing machine through bolts in the bolt holes.

[0007] The machine pressing die for producing refractory bricks mentioned above, the outer die sleeve is composed of a front panel B, a rear panel B, a left panel B, a right panel B and a bottom panel B. On both sides of the inner surfaces of the front panel B and the rear panel B, sunken clamping platforms are provided. The left panel B and the right panel B are of flat plate structure. On the upper edges of the inner surfaces of the front panel B, the rear panel B, the left panel B, the right panel B and the bottom panel B, chamfers are provided, and the chamfers are set to C5 - C10, with the unit of mm. The bottom panel B is located at the lower part between the front panel B, the rear panel B, the left panel B and the right panel B, forming an outer die sleeve with an outer die cavity B, and the size of the bottom panel B is smaller than the bottom size of the outer die cavity B.

[0008] For the machine pressing die for producing refractory bricks mentioned above, the size of the bottom panel A of the inner die sleeve is set to match the lower size of the inner die cavity A.

[0009] For the machine pressing die for producing refractory bricks mentioned above, the chamfers at the upper edges of the left panel A, the right panel A, the front panel A and the rear panel A are set to C5 - C10, with the unit of mm, and the depth of the sunken steps on the front panel A and the rear panel A is 5 - 10 mm.

[0010] For the machine pressing die for producing refractory bricks mentioned above, the plug plate is a square steel plate, and at least one piece is provided on each side.

[0011] For the machine pressing die for producing refractory bricks mentioned above, the shape of the inner die cavity A of the inner die sleeve is determined according to the shape of the required refractory bricks.

[0012] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0013] For the machine pressing die for producing refractory bricks of the utility model, by setting a split inner die sleeve and outer die sleeve, after the service life of the machine pressing die is exhausted, only the inner die sleeve needs to be replaced to be used again. The replacement range is small and the cost is low; and the machine pressing die is convenient for installation and disassembly, and the die cavity does not need to be disassembled back and forth. Only by removing the inner die sleeve can the installation and disassembly be completed; the structure of the utility model is simple and easy to use. By changing the shape of the inner cavity of the inner die sleeve, refractory bricks of any shape and any size can be pressed. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the utility model.

[0015] Figure 2 is the structural schematic diagram of the die cavity of the utility model.

[0016] Figure 3 is the structural schematic diagram of the inner die sleeve of the utility model.

[0017] Figure 4 is the combined structural schematic diagram of the inner die sleeve of the utility model.

[0018] Figure 5 It is a schematic structural diagram of the outer mold sleeve of the present utility model.

[0019] Figure 6 It is a schematic combined structural diagram of the outer mold sleeve of the present utility model.

[0020] Figure 7 It is a diagram of the usage state of the present utility model.

[0021] Figure 8 It is a schematic structural diagram of the inner mold sleeve of the present utility model being ejected.

[0022] In the figure: 1. Plug plate; 2. Mold cavity; 3. Outer mold sleeve; 4. Inner mold sleeve; 5. Step surface; 6. Bolt hole channel; 7. Inner cavity A; 8. Front panel A; 9. Upper panel A; 10. Right panel A; 11. Lower panel A; 12. Rear panel A; 13. Left panel A; 14. Inner mold cavity A; 15. Left panel B; 16. Step; 17. Front panel B; 18. Right panel B; 19. Lower panel B; 20. Rear panel B; 21. Outer mold cavity B; 22. Hammer head; 23. Bolt; 24. Pressing platform of the brick press. Specific embodiments

[0023] The present utility model can be explained in detail through the following embodiments, and the purpose of disclosing the present utility model is to protect all technical improvements within the scope of the present utility model.

[0024] Combined with the attached Figures 1-6The machine press die for producing refractory bricks includes an outer die sleeve 3 and an inner die sleeve 4 arranged in the inner cavity A7 of the die cavity 2. Plug plates 1 are provided between the four inner walls of the inner cavity A7 of the die cavity 2 and the outer wall of the outer die sleeve 3. The die cavity 2 is set in a "convex" shape, and the inner cavity A7 is located at the center above it. The inner cavity A7 is a square through-hole, and the outer die sleeve 3 is arranged in the through-hole. At least two bolt holes 6 are provided on the stepped surfaces 5 on both sides. The die cavity 2 is fixedly connected to the bearing platform 24 of the brick press through bolts 23 in the bolt holes 6. The upper part of the outer die sleeve 3 is an open square box body. The inner die sleeve 4 is arranged in the outer die cavity B21 of the outer die sleeve 3. The inner die sleeve 4 is a square box body structure, composed of a front panel A8, a rear panel A12, a left panel A13, a right panel A10, an upper panel A9, and a lower panel A11. Concave steps are provided on both sides of the inner surfaces of the front panel A8 and the rear panel A12. Concave clamping platforms are provided on both sides of the inner surfaces of the left panel A13 and the right panel A10. The left panel A13 and the right panel A10 are respectively matched with the steps on the front panel A8 and the rear panel A12 through the clamping platforms. Chamfers are provided at the upper edges of the inner surfaces of the front panel A8, the rear panel A12, the left panel A13, the right panel A10, the upper panel A9, and the lower panel A11. The upper panel A9 and the lower panel A11 are respectively located at the upper and lower parts between the front panel A8, the rear panel A12, the left panel A13, and the right panel A10. The size of the lower panel A11 of the inner die sleeve 4 is matched with the lower part of the inner die cavity A14. The chamfers at the upper edges of the left panel A13, the right panel A10, the front panel A8, and the rear panel A12 are set to C5 - C10, with the unit of mm. The depth of the concave steps on the front panel A8 and the rear panel A12 is 5 - 10 mm. The function of setting chamfers at the upper edges of the outer die sleeve 3 and the inner die sleeve 4 is to have a micro-positioning effect when the hammer head 22 on the bearing platform 24 of the brick press drops.

[0025] Specifically, the outer die sleeve 3 is composed of a front panel B17, a rear panel B20, a left panel B15, a right panel B18, and a lower panel B19. Concave clamping platforms are provided on both sides of the inner surfaces of the front panel B17 and the rear panel B20. The left panel B15 and the right panel B18 are flat plate structures. Chamfers are provided at the upper edges of the inner surfaces of the front panel B17, the rear panel B20, the left panel B15, the right panel B18, and the lower panel B19. The chamfers are set to C5 - C10, with the unit of mm. The lower panel B19 is located at the lower part between the front panel B17, the rear panel B20, the left panel B15, and the right panel B18, forming the outer die sleeve 3 with the outer die cavity B21, and the size of the lower panel B19 is smaller than the bottom size of the outer die cavity B21.

[0026] Specifically, the plug plate 1 is a square steel plate, and at least one piece is provided on each side, which can be determined according to the actual situation. It is only necessary to fill the gap between the outer die sleeve 3 and the die cavity 2, and the plug plate 1 can be reused.

[0027] Specifically, the shape of the inner die cavity A of the inner die sleeve 4 is determined according to the shape of the required refractory brick.

[0028] When implementing the machine press die for producing refractory bricks of the present utility model, during use, the inner die sleeve 4 is fitted with the clamping platforms on both sides of the inner surfaces of the left panel A13 and the right panel A10 through the steps on both sides of the inner surfaces of the front panel A8 and the rear panel A12, and the lower panel A11 is clamped. As shown in the appendix Figures 3-4 As shown, according to the shape of the required refractory brick, the inner surface of the front panel A8 is set as a concave arc surface, and the inner surface of the rear panel A12 is set as a convex arc surface; the outer die sleeve 3 is assembled through the clamping platforms on both sides of the inner surfaces of the front panel B17 and the rear panel B20 with the left panel B15 and the right panel B18, and the lower panel B19 is located at the lower part between the front panel B17, the rear panel B20, the left panel B15 and the right panel B18 to form the outer die sleeve 3; as shown in the appendix Figure 7 As shown, the die cavity 2 is fixedly connected to the bearing platform 24 of the brick press through the bolts 23 in the bolt holes 6 on the step surfaces on both sides. The outer die sleeve 3 is sequentially placed into the through hole above the die cavity 2, the inner die sleeve 4 is placed into the outer die cavity B21 of the outer die sleeve 3, powder is poured into the inner die cavity A14 of the inner die sleeve 4, the upper panel A9 is covered, and under the action of gravity, the large-tonnage hydraulic device applies a huge downward pressure. The pressure is transmitted through the hammer head 22 to compact the powder. After the refractory brick blank is formed, the ejector rod in the middle part of the bearing platform 24 of the brick press is controlled by a switch to jack up the lower panel B19. As shown in the appendix Figure 8 As shown, the lower panel B19 will lift the entire inner die sleeve 4 out, separate the upper panel A9, the front panel A8, the rear panel A12, the left panel A13 and the right panel A10 of the inner die sleeve 4, and take out the brick blank. Then, the inner die sleeve 4 is reassembled, the ejector rod is lowered, the inner die sleeve 4 automatically drops, and powder is added again to press the brick; the pressure-bearing principle of the machine press die is as follows: In this machine press die, the pressure-bearing range of the working surface of the inner die sleeve 4 is generally within the range of 150 mm - 200 mm upward from the lower edge of the die, that is, the height of the refractory brick. The pressure will drop sharply above this range, and the pressure transmitted to the outer die sleeve 3 will be mostly dispersed. As a result, the entire working surface of the outer die sleeve 3 will evenly bear the pressure, and the pressure will be more dispersed further outwards. Therefore, the inner die sleeve 4 is more likely to deform, followed by the outer die sleeve 3, and the die cavity 2 hardly has the risk of deformation. Therefore, after the service life of the machine press die is exhausted, only the inner die sleeve needs to be replaced to be used again. The prepared brick blank undergoes subsequent high-temperature sintering to finally obtain high-strength refractory bricks; the large-tonnage hydraulic device and the bearing platform 24 of the brick press of the present utility model are both prior arts, so the specific structures and working principles will not be elaborated in detail.

[0029] The parts not elaborated in the present utility model are prior arts.

[0030] The embodiments selected herein for the purpose of disclosing the inventive object of the present utility model are currently considered suitable. However, it should be understood that the present utility model is intended to include all variations and improvements of all embodiments that fall within the scope of this concept and utility model.

Claims

1. A mechanical pressing mold for producing refractory bricks, comprising an outer mold sleeve and an inner mold sleeve arranged in a mold cavity A, characterized in that: Blocking plates are provided between the four inner walls of the inner cavity A of the mold cavity and the outer wall of the outer mold sleeve. The outer mold sleeve is a square box with an open upper part. The inner mold sleeve is arranged in the outer mold cavity B of the outer mold sleeve. The inner mold sleeve is a square box structure, which is composed of a front panel A, a rear panel A, a left panel A, a right panel A, an upper panel A and a lower panel A. Recessed steps are provided on both sides of the inner surfaces of the front panel A and the rear panel A, and recessed clamping platforms are provided on both sides of the inner surfaces of the left panel A and the right panel A. The left panel A and the right panel A are respectively matched with the steps on the front panel A and the rear panel A through the clamping platforms. Chamfers are provided at the upper edges of the inner surfaces of the front panel A, the rear panel A, the left panel A, the right panel A, the upper panel A and the lower panel A. The upper panel A and the lower panel A are respectively located at the upper and lower parts between the front panel A, the rear panel A, the left panel A and the right panel A.

2. The machine pressing mold for producing refractory bricks according to claim 1 is characterized in that: The mold cavity is arranged in a "convex" shape, and the inner cavity A is arranged at the center above it. The inner cavity A is a square through hole, and the outer mold sleeve is arranged in the through hole. At least two bolt holes are arranged on the step surfaces on both sides. The mold cavity is fixedly connected to the pressure platform of the brick press through the bolts in the bolt holes.

3. The machine pressing mold for producing refractory bricks according to claim 1 is characterized in that: The outer mold sleeve is composed of a front panel B, a rear panel B, a left panel B, a right panel B and a lower panel B. Concave card platforms are provided on both sides of the inner surfaces of the front panel B and the rear panel B. The left panel B and the right panel B are flat structures. Chamfers are provided at the upper edges of the inner surfaces of the front panel B, the rear panel B, the left panel B, the right panel B and the lower panel B. The chamfers are set to C5-C10, in mm. The lower panel B is located at the lower part between the front panel B, the rear panel B, the left panel B and the right panel B, forming an outer mold sleeve with an outer mold cavity B, and the size of the lower panel B is smaller than the bottom size of the outer mold cavity B.

4. The machine pressing mold for producing refractory bricks according to claim 1 is characterized in that: The size of the lower panel A of the inner mold sleeve is matched with the lower size of the inner mold cavity A.

5. The machine pressing mold for producing refractory bricks according to claim 1 is characterized in that: The chamfers at the upper edges of the left panel A, the right panel A, the front panel A and the rear panel A are set to C5-C10, in mm, and the depth of the recessed steps on the front panel A and the rear panel A is 5-10 mm.

6. The machine pressing mold for producing refractory bricks according to claim 1, characterized in that: The blocking plate is a square steel plate, with at least one plate being provided on each side.

7. The machine pressing mold for producing refractory bricks according to claim 1 is characterized in that: The shape of the inner mold cavity A of the inner mold sleeve is determined according to the shape of the required refractory bricks.

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