Mold for producing a protective airlock door

Abstract

The utility model discloses a mould for the production of protective airtight door belongs to civil air defence engineering technical field, include: mould main part and mould upper cover, the mould upper cover detachable installation at the top of mould main part, the inside of mould main part is provided with the chamber, the inside of mould main part and mould upper cover all is provided with heat preservation subassembly, the chamber inside is provided with the heat dissipation subassembly that carries out the cooling of mould main part, the utility model discloses through the mould of mould main part and mould upper cover closes the storage of pouring liquid after moulding, then gradually cooling forming of pouring liquid in the mould, in the cooling process, through the common control temperature of heat preservation subassembly and heat dissipation subassembly, through temperature sensor to the temperature of mould inside carries out the feedback, accurately controls the temperature of mould in different time periods, makes the temperature difference of pouring liquid inside and outside not too big, avoids the heat stress of pouring liquid inside, causes the crack of the surface of the production of civil air defence door because of the heat stress.

Description

Technical Field

[0001] This utility model relates to the field of civil defense engineering technology, specifically a mold for producing protective airtight doors. Background Technology

[0002] Civil defense doors are the doors at the entrances and exits of civil defense projects. Civil defense doors are clearly classified, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds, and other types of civil defense equipment. The through grooves of civil defense doors are processed by casting to ensure the integrity and strength of the door body as a whole.

[0003] Traditional blast door casting molds require the casting liquid inside to cool and solidify before demolding. Because blast doors need to maintain their strength, they are usually processed with thickening. This results in different cooling rates inside and outside the blast door during the cooling process inside the casting mold, leading to uneven cooling. The outer layer usually cools and solidifies first, while the incompletely cooled areas inside will be constrained by the solidified parts during subsequent shrinkage. This creates thermal stress inside the blast door, which directly affects the quality of the blast door. The surface of the blast door is prone to cracking due to tensile stress. Utility Model Content

[0004] The purpose of this utility model is to provide a mold for producing protective airtight doors. By using a heat insulation component to insulate the inside of the mold body and the mold cover, the temperature of the mold body and the mold cover is prevented from dropping too quickly, which would cause different cooling rates inside and outside the injection molding liquid and affect the quality of the cooling and molding of the air-raid shelter door. Through staged cooling and constant temperature maintenance of the mold body and the mold cover, thermal stress inside the air-raid shelter door during production is prevented from causing external cracks, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold for producing protective airtight doors, comprising:

[0006] Mold body and mold top cover;

[0007] The mold cover is detachably installed on the top of the mold body. The mold body has a cavity inside. Both the mold body and the mold cover are equipped with heat insulation components. The cavity is equipped with heat dissipation components to cool down the mold body.

[0008] The top of the mold cover is provided with a pouring port, and a temperature sensor is integrated inside the mold body and the mold cover.

[0009] Preferably, the heat preservation component includes a heating tube embedded inside the mold body and the mold cover, a connecting seat is installed on the side wall of the mold body and the mold cover, the heating tube extends outward and is connected to the connecting seat, and the connecting seat is connected to the controller outward through a wire.

[0010] Preferably, multiple sets of support seats are fixed in the cavity, and partitions are fixed between the support seats.

[0011] Preferably, the heat dissipation component includes two sets of through slots opened at the bottom of the mold body, and the through slots are located on both sides of the partition. An exhaust fan assembly is fixedly installed in the through slots. Multiple sets of through holes are opened on the support base. Heat dissipation holes are opened on both sides of the mold body.

[0012] Preferably, movable plates are movably arranged on both sides inside the mold body, and the movable plates are provided with connection holes that align with the heat dissipation holes. An electric push rod is fixed on the outside of the mold body, and the movable end of the electric push rod passes through the interior of the mold body and is fixedly connected to one end of the movable plate.

[0013] Preferably, the mold body is fixed with fixing seats on both sides, the mold cover is fixed with limiting plates on both sides, the fixing seat is fixed with a threaded post on the top, and the threaded post passes through the limiting plate and is threadedly connected with a nut.

[0014] Preferably, the bottom of the mold body is fixed with support legs around its perimeter, and the top of the mold cover is fixed with two sets of handles.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention stores the casting liquid after the mold body and mold cover are closed. The casting liquid then gradually cools down and solidifies inside the mold. During the cooling process, the temperature is controlled by the heat preservation components and heat dissipation components. The temperature sensor provides feedback on the internal temperature of the mold, accurately controlling the temperature of the mold at different times. This prevents the temperature difference between the inside and outside of the casting liquid from being too large, avoiding the generation of thermal stress inside the casting liquid, which could cause cracks on the surface of the produced air-raid shelter door due to thermal stress.

[0017] This invention, through the cooperation of the threaded column and the nut, can not only position the mold body and the mold cover to ensure accurate mold closing, but also prevent the expansion of the internal pouring liquid from causing the mold cover and the mold body to separate and overflow. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled three-dimensional structure of this utility model;

[0020] Figure 3 This is a cross-sectional three-dimensional structural diagram of the main body of the mold of this utility model;

[0021] Figure 4 This is a schematic diagram of the support base and partition structure of this utility model;

[0022] Figure 5 This is a side view cross-sectional three-dimensional structural diagram of the main body of the mold of this utility model.

[0023] The following are the labeling elements in the diagram: 1. Mold body; 2. Mold top cover; 3. Cavity; 4. Insulation component; 41. Heating tube; 42. Connecting seat; 43. Controller; 5. Heat dissipation component; 51. Through slot; 52. Exhaust fan component; 53. Through hole; 54. Heat dissipation hole; 6. Sprue; 7. Support base; 8. Partition plate; 9. Movable plate; 10. Connecting hole; 11. Electric actuator; 12. Fixed base; 13. Limiting plate; 14. Threaded column; 15. Nut; 16. Support leg; 17. Handle. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figures 1-5 The mold shown is for producing a protective airtight door, comprising:

[0026] Mold body 1 and mold top cover 2;

[0027] The mold cover 2 is detachably installed on the top of the mold body 1. The mold body 1 has a cavity 3 inside. Both the mold body 1 and the mold cover 2 are equipped with heat insulation components 4. The cavity 3 is equipped with heat dissipation components 5 to cool down the mold body 1.

[0028] The top of the mold cover 2 is provided with a pouring port 6, and the interior of the mold body 1 and the mold cover 2 are integrated with temperature sensors;

[0029] After the mold body 1 and the mold cover 2 are closed, the casting liquid is stored. Then the casting liquid gradually cools down and forms inside the mold. During the cooling process, the temperature is controlled by the heat insulation component 4 and the heat dissipation component 5. The temperature sensor provides feedback on the internal temperature of the mold, and the temperature of the mold is precisely controlled at different times. This ensures that the temperature difference between the inside and outside of the casting liquid is not too large, and avoids the generation of thermal stress inside the casting liquid, which could cause cracks on the surface of the produced air-raid shelter door due to thermal stress.

[0030] Among them, such as Figure 2-3 As shown:

[0031] The heat insulation component 4 includes a heating tube 41 embedded inside the mold body 1 and the mold cover 2. A connecting seat 42 is installed on the side wall of the mold body 1 and the mold cover 2. The heating tube 41 extends outward and is connected to the connecting seat 42. The connecting seat 42 is connected to the controller 43 outward through a wire. The heating tube 41 is connected to the controller 43 through the connecting seat 42. The controller 43 supplies power to the heating tube 41 and releases heat to maintain the temperature of the mold cover 2 and the mold body 1, so as to prevent the temperature of the mold cover 2 and the mold body 1 from dropping rapidly over time, which would cause thermal stress inside the produced air-raid shelter door.

[0032] The controller 43 is a PLC controller. The controller 43 is electrically connected to the electric push rod 11 and the exhaust fan assembly 52. ​​It can programmatically control the cooling time and the heat preservation time. The program part is not within the scope of protection of this patent.

[0033] Furthermore, such as Figure 3-4 As shown:

[0034] Multiple sets of support seats 7 are fixed inside the chamber 3, and partition plates 8 are fixed between the support seats 7. The support seats 7 are set to support the chamber 3 and prevent the casting liquid from squeezing the mold body 1 and deforming. At the same time, the partition plates 8 divide the chamber 3 into two parts, and the temperature of the two sides can be controlled independently, which facilitates precise temperature control and makes the temperature drop more uniform.

[0035] Preferred, such as Figure 3-5 As shown:

[0036] The heat dissipation component 5 includes two sets of through slots 51 opened at the bottom of the mold body 1, and the through slots 51 are located on both sides of the partition plate 8. An exhaust fan component 52 is fixedly installed in the through slots 51. Multiple sets of through holes 53 are opened on the support base 7. Heat dissipation holes 54 are opened on both sides of the mold body 1. Through the setting of the exhaust fan component 52, the outside air below the mold body 1 is introduced into the chamber 3. Then, the heat in the chamber 3 is discharged from the mold body 1 through the heat dissipation holes 54 with the air flow, so that the temperature of the mold body 1 drops and the temperature can be controlled in stages.

[0037] It is worth noting that, such as Figure 5 As shown:

[0038] Movable plates 9 are movably arranged on both sides inside the mold body 1. The movable plates 9 have connection holes 10 that align with the heat dissipation holes 54. An electric push rod 11 is fixed on the outside of the mold body 1. The movable end of the electric push rod 11 passes through the inside of the mold body 1 and is fixedly connected to one end of the movable plate 9. The movable plate 9 can be pushed and pulled by the electric push rod 11 to easily adjust the position of the connection hole 10 and the heat dissipation hole 54, control the effective exhaust volume of the heat dissipation hole 54, and use it to control and regulate the temperature.

[0039] In a further preferred embodiment, such as Figure 1-2 As shown:

[0040] The mold body 1 is fixed with fixed seats 12 on both sides, and the mold cover 2 is fixed with limit plates 13 on both sides. The top of the fixed seat 12 is fixed with a threaded post 14. The threaded post 14 passes through the limit plate 13 and is threaded with a nut 15. Through the cooperation of the threaded post 14 and the nut 15, the mold body 1 and the mold cover 2 can be positioned to ensure accurate mold closing. At the same time, it can prevent the expansion of the internal pouring liquid from causing the mold cover 2 and the mold body 1 to expand apart, resulting in the pouring liquid overflowing.

[0041] In addition, such as Figure 1-2 As shown:

[0042] Support legs 16 are fixed around the bottom of the mold body 1, and two sets of handles 17 are fixed on the top of the mold cover 2. The support legs 16 support the mold body 1, making it easy for the exhaust fan assembly 52 to draw external air from the bottom into the chamber 3. At the same time, the handles 17 are used for hoisting the mold cover 2.

[0043] In practical use, the mold cover 2 is placed above the mold body 1, and the threaded post 14 passes through the limiting plate 13 and is locked by the nut 15. Then, the casting liquid is poured into the mold body 1 from the pouring port 6. The casting liquid gradually cools down inside the mold body 1. The exhaust fan assembly 52 draws the air below the mold body 1 into the chamber 3, and then the hot air in the chamber 3 is discharged outward from the heat dissipation hole 54 through the through hole 53, which lowers the temperature of the mold body 1 and helps the casting liquid cool down and form. The casting liquid is cooled in stages, and heat preservation is carried out at each stage. The heating tube 41 is controlled by the controller 43 to maintain the temperature of the mold body 1 and the mold cover 2. The temperature is fed back by the temperature sensor and monitored in real time to avoid the temperature drop difference between the inside and outside of the casting liquid being too large, which would cause the outer layer of the air-raid shelter door to solidify quickly, while the temperature drop rate of the casting liquid inside is too slow, resulting in thermal stress inside the air-raid shelter door and causing cracks on the surface of the air-raid shelter door.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for producing protective airtight doors, characterized in that, include: Mold body (1) and mold cover (2); The mold cover (2) is detachably installed on the top of the mold body (1). The mold body (1) has a cavity (3) inside. Both the mold body (1) and the mold cover (2) are equipped with heat insulation components (4). The cavity (3) is equipped with a heat dissipation component (5) to cool down the mold body (1). The top of the mold cover (2) is provided with a pouring port (6), and the interior of the mold body (1) and the mold cover (2) is integrated with a temperature sensor.

2. The mold for producing a protective airtight door according to claim 1, characterized in that: The heat preservation component (4) includes a heating tube (41) embedded inside the mold body (1) and the mold cover (2). A connecting seat (42) is installed on the side wall of the mold body (1) and the mold cover (2). The heating tube (41) extends outward and is connected to the connecting seat (42). The connecting seat (42) is connected to the controller (43) outward through a wire.

3. The mold for producing a protective airtight door according to claim 1, characterized in that: Multiple sets of support seats (7) are fixed inside the chamber (3), and partitions (8) are fixed between the support seats (7).

4. The mold for producing a protective airtight door according to claim 3, characterized in that: The heat dissipation component (5) includes two sets of through slots (51) opened at the bottom of the mold body (1), and the through slots (51) are located on both sides of the partition plate (8). An exhaust fan component (52) is fixedly installed in the through slots (51). Multiple sets of through holes (53) are opened on the support base (7). Heat dissipation holes (54) are opened on both sides of the mold body (1).

5. The mold for producing a protective airtight door according to claim 1, characterized in that: Movable plates (9) are movably arranged on both sides inside the mold body (1). The movable plates (9) are provided with connecting holes (10) that are aligned with the heat dissipation holes (54). An electric push rod (11) is fixed on the outside of the mold body (1). The movable end of the electric push rod (11) passes through the inside of the mold body (1) and is fixedly connected to one end of the movable plate (9).

6. The mold for producing a protective airtight door according to claim 1, characterized in that: The mold body (1) is fixed with a fixed seat (12) on both sides, and the mold cover (2) is fixed with a limit plate (13) on both sides. The fixed seat (12) is fixed with a threaded column (14) on the top. The threaded column (14) passes through the limit plate (13) and is threadedly connected with a nut (15).

7. The mold for producing a protective airtight door according to claim 1, characterized in that: Support legs (16) are fixed around the bottom of the mold body (1), and two sets of handles (17) are fixed on the top of the mold cover (2).

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