Mould for civil air defense door leaf production

Abstract

The utility model relates to the technical field of civil air defense door processing, in particular to a civil air defense door leaf production die which comprises a bottom plate and a plurality of protruding blocks, the bottom plate is a rectangular plate, each protruding block is of a quadrangular frustum pyramid structure integrally, the cross section of each protruding block is in a regular trapezoid shape, die drawing after door leaf pouring is facilitated, and the protruding blocks are distributed on the bottom plate in a matrix mode. The protruding block and the bottom plate are welded into a whole, the protruding block cannot displace during pouring, the size of the door leaf is guaranteed, the welding position of the bottom plate and the protruding block is subjected to fillet treatment, the smooth surface of the concrete door leaf is guaranteed, the protruding block is made of a plate, the upper end of the protruding block is sealed, the weight of the mold is reduced, and the mold is convenient to move and carry, and the draft angle of the protruding block is 5-10 degrees. The bottom plate and the protruding block are welded into a whole, positioning of the protruding block is accurate, it can be guaranteed that the protruding block does not displace when the concrete door leaf is poured, and the size of the poured door leaf is accurate.

Description

Technical Field

[0001] This utility model relates to the field of civil defense door processing technology, specifically a mold for producing civil defense door panels. Background Technology

[0002] Concrete air-raid shelter doors are generally cast using molds. To reduce the weight of the door while ensuring its protective performance, multiple cavities are designed inside the door to facilitate installation. However, the existing molds have movable protrusions corresponding to the cavities. During use, the steel reinforcement frame is first placed on the base plate, and then the protrusions are placed in the steel reinforcement frame. The positioning accuracy is not high, and the protrusions are prone to displacement during concrete pouring, resulting in large errors in the door size and affecting its structure. Utility Model Content

[0003] To address the shortcomings of existing technologies, the present invention provides a mold for the production of civil defense door panels, which solves the problem that the movable protrusions in existing civil defense door panel molds are easily displaced during casting due to inaccurate positioning.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a mold for producing air defense door panels, including a base plate and protrusions. The base plate is a rectangular plate, and the protrusions are generally a truncated pyramid structure with a regular trapezoidal cross-section. Several protrusions are distributed in a matrix on the base plate, and the protrusions are welded to the base plate as one piece. The weld between the base plate and the protrusions is rounded.

[0005] The beneficial effects of this solution are: compared with the existing movable protrusions, this utility model welds the base plate and the protrusion into one piece, the protrusion is accurately positioned, and it can be ensured that the protrusion will not be displaced when the concrete door leaf is poured, and the size of the poured door leaf is accurate.

[0006] Furthermore, the protrusion is made of sheet metal and has a sealed top, which reduces the weight of the mold and makes it easier to move and transport the mold.

[0007] Furthermore, the draft angle of the protrusion is 5 to 10 degrees, which facilitates the removal of the cast door leaf. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of the mold used for producing the civil defense door leaf of this utility model;

[0009] Figure 2 This is a cross-sectional schematic diagram of the mold used for producing the civil defense door leaf of this utility model;

[0010] Figure 3 for Figure 2 Enlarged view of point A;

[0011] In the diagram: 1-base plate, 2-protrusion, 3-rounded corner. Detailed Implementation

[0012] 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.

[0013] Implementation, for example, attached Figures 1 to 3 As shown: A mold for producing civil defense door panels includes a base plate 1 and protrusions 2. The base plate 1 is a rectangular plate, and the protrusions 2 are generally truncated pyramidal structures with a trapezoidal cross-section to facilitate demolding after the door panel is cast. Several protrusions 2 are distributed in a matrix on the base plate 1 and are welded to the base plate 1 as a whole. The protrusions 2 will not shift during casting, ensuring the dimensions of the door panel. The weld between the base plate 1 and the protrusions 2 is rounded at the corner 3 to ensure a smooth surface of the concrete door panel. The protrusions 2 are made of plate material and have a sealed top end to reduce the weight of the mold and facilitate its movement and handling. The draft angle of the protrusions 2 is 5 to 10 degrees, which facilitates the removal of the cast door panel.

[0014] The specific implementation process is as follows: Place the base plate 1 horizontally, make protrusions 2 according to the number and size of the cavities inside the door leaf, and weld the protrusions 2 to the corresponding positions on the base plate 1. After the welding is firm, round the corners of the welded parts. Use a manual or deburring machine to round the corners. When pouring the door leaf, place the mold horizontally and install the steel reinforcement frame inside the mold. The main body of the steel reinforcement frame is located between the protrusions 2. After installing baffles around the base plate 1, pour concrete. After the concrete is compacted and solidified, it can be removed to obtain the concrete door leaf. The cavity of the door leaf is formed at the position corresponding to the protrusions 2. Since the protrusions 2 are welded to the base plate 1 as one piece, they will not move during pouring, which can ensure the accuracy of the door leaf size. The protrusions 2 are set as a four-sided truncated pyramid structure to facilitate the demolding of the door leaf. The rounded corners at the welded parts of the protrusions 2 and the base plate 1 can ensure the smooth surface of the door leaf.

[0015] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A mold for producing air-raid shelter door panels, comprising a base plate and protrusions, characterized in that: The base plate is a rectangular plate, and the protrusion is a truncated pyramid structure with a trapezoidal cross-section. Several protrusions are distributed in a matrix on the base plate, and the protrusions are welded to the base plate as one piece. The weld between the base plate and the protrusions is rounded.

2. The mold for producing civil defense door panels according to claim 1, characterized in that: The protrusion is made of sheet metal and has a sealed top.

3. The mold for producing civil defense door panels according to claim 1, characterized in that: The draft angle of the protrusion is 5 to 10 degrees.

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