Shell-shaped object mold

Abstract

The utility model discloses a mould of a shell-shaped object, which relates to the technical field of moulds and comprises a core mould and a plurality of layers of mutually connected mould plates, one layer of mould plate at least comprises two movable mould blocks, a cavity used for containing the core mould is defined by the two mould blocks and the adjacent mould plate, and when the core mould is taken out of the cavity, the mould blocks are arranged on the mould blocks. The two modules can move oppositely under the action of external force; the mold is more convenient to demold.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a mold for a shell-shaped object. Background Art

[0002] With the rapid development of communication technologies, 5G communication technology has become the main driving force in the modern communication field. As a key component in a wireless communication system, the protection of antennas is of crucial importance. As the outer protective structure of an antenna, the main function of an antenna radome is to prevent external environmental factors such as ice and snow, sand and dust, and solar radiation from damaging the antenna system. Its appearance and performance have a direct impact on communication quality.

[0003] To meet the requirements of aerodynamics, antenna radomes usually adopt a streamlined structure design to ensure that the incident angle changes little during antenna scanning and achieve the best electrical performance. However, the streamlined design also poses challenges to the design and manufacturing of molds. During the mold design process, the shape characteristics of the antenna radome, such as cylindrical, spherical or parabolic, need to be fully considered. For convenient transportation, the size and shape transportability of the antenna radome need to be considered during design. In actual production, the antenna radome product is often designed as a regular cuboid, and rounded corners are made on the four edges to reduce the stress concentration that may occur during transportation.

[0004] In the prior art, most molds use wood as the raw material. After cutting, there are often defects such as surface pits and burrs. When demolding the antenna radome, due to the relatively large friction between the wooden molds, it is not easy to remove the mold from the antenna radome. Forcible demolding may cause damage to the antenna radome or the mold. Summary of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a mold for a shell-shaped object, which is more convenient for demolding.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A mold for a shell-shaped object, comprising: a core mold and multiple layers of interconnected templates, where at least one layer of the templates includes at least two movable modules. The two modules and the adjacent templates enclose a cavity for accommodating the core mold. When the core mold is taken out of the cavity, the two modules can move towards each other under the action of an external force.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] During demolding, the core mold is taken out of the cavity, and then an external force is applied to press the modules to move towards each other, so that the inner wall of the workpiece is loosened from the outer wall of the template. At this time, the workpiece can be easily demolded from the template, and the entire demolding process is not likely to damage the workpiece and the mold.

[0010] As a preferred solution, lubricant is applied to the pitted areas of each of the templates and / or the joints between two adjacent templates.

[0011] As a preferred solution, the lubricant includes a mixture of gypsum and water.

[0012] As a preferred solution, the mating surfaces of two adjacent templates are adhesively connected.

[0013] As a preferred solution, each layer of the templates is fixed by winding with tape along the demolding direction.

[0014] As a preferred solution, the core mold is made of gypsum.

[0015] As a preferred solution, the cavity is in the shape of a cuboid.

[0016] As a preferred solution, this mold is applied to manufacture radomes. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the mold in the embodiment.

[0018] In the above-mentioned drawings:

[0019] 1. Module; 2. Core mold; 3. Round chamfer; 4. Template. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; the structures described in various embodiments can be freely combined without conflict in terms of structure or principle.

[0021] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] The following is a description of some embodiments of the present invention in conjunction with the accompanying drawings:

[0024] like Figure 1 As shown, the utility model proposes a mold for a shell-like object, comprising: a core mold 2 and a template 4, wherein the template 4 is provided with multiple layers (greater than or equal to two layers), and the specific number of layers of the template 4 can be increased or decreased according to actual usage conditions (such as the thickness of the workpiece, etc.); the templates 4 are stacked to form a mold, wherein a layer of the template 4 includes at least two movable modules 1; for ease of understanding, four layers of wooden templates 4 and two modules 1 are taken as an example here, and the modules 1 and adjacent templates 4 together form a cavity, and the cavity is used to place the core mold 2, and when the core mold 2 is taken out of the cavity, the two modules 1 can move toward each other under the action of external force.

[0025] By adopting the above scheme, when demoulding, the core mold 2 is taken out from the cavity, and then the module 1 is pressed by external force to move toward each other, so that the inner wall of the workpiece and the outer wall of the template 4 are loosened, and the workpiece can be easily demoulded and taken out from the template 4, and the whole demoulding process is not easy to damage the workpiece and the mold. The experimental cost and time consumption are reduced, and the appearance of the produced workpiece is good.

[0026] As a preferred solution, the core mold 2 is made of gypsum. First, the gypsum is smooth and easy to remove during demoulding. Second, the core mold 2 can be broken in special circumstances where it is inconvenient to remove, which is more convenient. In addition, gypsum is easy to obtain and has low cost and can solidify quickly.

[0027] As a preferred solution, the cavity is designed to be in a rectangular parallelepiped shape for ease of manufacturing.

[0028] As a preferred solution, the edge of the outermost template 4 is set to be a rounded chamfer 3, and the chamfer radius is 10 mm, for example, to reduce the stress concentration of the mold during transportation and use, and improve the durability of the mold. At the same time, the design of the rounded chamfer 3 is also conducive to the streamlined appearance of the radome and optimizes its aerodynamic performance.

[0029] As a preferred solution, the mold is used to manufacture antenna covers.

[0030] As a preferred solution, in order to make the workpiece demould from the mold more smoothly, a lubricant is applied to the pits of the template 4, and a lubricant can also be applied to the joints of two adjacent templates 4. The lubricant plays a lubricating role and reduces the friction when the workpiece and the mold move relative to each other.

[0031] For example, the lubricant includes a mixture of plaster and water; the mixture is applied to the pits of the wooden board and / or the joints between two adjacent templates 4, and the plaster is polished after solidification and drying. The smooth surface of the plaster plays a role of lubrication.

[0032] As a preferred solution, in order to facilitate assembly and disassembly of the template 4, the mold is reused; the mating surfaces of two adjacent templates 4 are glued together, illustratively, the mating surfaces of two adjacent templates 4 are glued together using double-sided tape.

[0033] As a preferred solution, in order to facilitate the assembly and disassembly of the template 4, the mold is reused; each layer of the template 4 is removed along the demoulding direction ( Figure 1 The adhesive tape is wound along the demoulding direction, which will not affect the application of plaster at the joints of adjacent templates 4. When demoulding, the adhesive tape on the end face of the template 4 is cut with a tool, which is convenient for pulling out the core mold 2 and also convenient for the external force to drive the module 1 to move. The adhesive tape wrapped around the template 4 is thin, which is convenient for making the antenna cover and saves costs.

Claims

1. A mold for a shell-like object, characterized in that: include: A core mold (2) and multiple layers of interconnected templates (4), wherein one layer of the template (4) includes at least two movable modules (1), and the two modules (1) and the adjacent templates (4) form a cavity for accommodating the core mold (2), and when the core mold (2) is taken out of the cavity, the two modules (1) can move toward each other under the action of external force.

2. The mold of a shell-shaped object according to claim 1, characterized in that: Lubricants are applied to the depressions of each template (4) and / or the joints between two adjacent templates (4).

3. The mold of a shell-shaped object according to claim 2, characterized in that: The lubricant includes a mixture of gypsum and water.

4. A shell-shaped object mold according to any one of claims 1 to 3, characterized in that: The abutting surfaces of two adjacent templates (4) are connected by gluing.

5. The mold of a shell-shaped object according to claim 4, characterized in that: Each layer of the template (4) is fixed by wrapping it along the demoulding direction with adhesive tape.

6. A shell-shaped object mold according to any one of claims 1 to 3, characterized in that: The core mold (2) is made of gypsum.

7. A shell-shaped object mold according to any one of claims 1 to 3, characterized in that: The cavity is in the shape of a cuboid.

8. A shell-shaped object mold according to any one of claims 1 to 3, characterized in that: The mold is used to manufacture a radome.

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