CN211683224U - Mould that antenna house product predeformed - Google Patents

Abstract

The utility model relates to the technical field of mold, a mould of antenna house product predeformation, including the die cavity that is used for the antenna house product of moulding plastics, the die cavity is the curved surface form, the height of die cavity is increased gradually to both ends from the middle part. The die cavity of the die of the patent is curved surface form, and after the injection molding of the antenna housing product, the middle of the die cavity is low, the two ends of the die cavity are high, the die cavity is curved surface form protruding downwards, then natural buckling deformation, the middle of the die cavity gradually upwarps, the two ends of the die cavity gradually sink, and the die cavity is finally planar or close to the plane. Therefore, this patent makes the antenna house product obtain with the deformation in advance that natural warpage deformation trend is opposite through improving the structure of die cavity, utilizes this deformation in advance can effectively offset the deformation that natural warpage arouses, makes the product finally be planar or is close to planar.

Description

Mould that antenna house product predeformed

Technical Field

The utility model relates to the technical field of mold, specifically a mold for producing antenna housing products.

Background

After injection molding, plastic materials generally have a certain amount of warpage, and the amount of warpage is proportional to the size of the plastic product. On the other hand, the size of the 5G radome is larger, generally about 1 meter (as shown in fig. 1), so that the radome has very large warping deformation after injection molding (as shown in fig. 2). Therefore, after being installed in an antenna base station, the performance of waterproof, dustproof, wave-transmitting rate and the like can be seriously influenced, and the installation can be further seriously disabled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mould of antenna house product predeformation to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a mould of antenna house product predeformation, is including the die cavity that is used for moulding plastics antenna house product, its characterized in that, the die cavity is the curved surface form, the height of die cavity increases gradually from the middle part to both ends.

The cavity of the existing mold is planar, after the radome product is subjected to injection molding, the radome product begins to be planar, then naturally warps and deforms, the middle of the radome product gradually warps, the two ends of the radome product gradually sink, and finally the radome product is in an upward convex curved surface shape. And the die cavity of the mould of this patent is the curved surface form, and after the antenna house product injection moulding, the centre is low, both ends are high, is bellied curved surface form downwards, then natural warpage warp, and the centre upwarps gradually, both ends sink gradually, nevertheless finally is planar or is close to planar. Therefore, this patent makes the antenna house product obtain with the deformation in advance that natural warpage deformation trend is opposite through improving the structure of die cavity, utilizes this deformation in advance can effectively offset the deformation that natural warpage arouses, makes the product finally be planar or is close to planar.

The antenna housing product predeformation die comprises an upper die and a lower die, wherein the upper die is located above the lower die, the lower die is located below the upper die, and the junction of the upper die and the lower die is provided with the die cavity.

Preferably, the mould for predeformation of the radome product further comprises an insert, wherein a groove or a protrusion corresponding to the radome product is formed in the upper part of the insert, and the groove or the protrusion is a part of the cavity;

a thimble is arranged in the lower die, a recess with an upward opening is arranged on the upper end surface of the lower die, and the thimble extends out of the recess;

the insert is detachably connected to the concave part, and the top of the ejector pin abuts against the bottom of the insert.

This patent adopts the form of inserts to bear and found the die cavity, and the convenience is through changing the inserts, satisfies the preparation of the antenna house of different curved surface degree requirements.

Drawings

Fig. 1 is a schematic structural diagram of a radome product produced by a conventional mold;

FIG. 2 is a schematic view of the structure of FIG. 1 after buckling deformation;

FIG. 3 is a sectional view of a part of the structure of the present invention;

fig. 4 is a schematic structural view of a radome article produced by the present patent;

fig. 5 is a schematic view of the structure of fig. 4 after being warped.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 3, 4, 5, a mould that antenna house product was warp in advance, including the die cavity 3 that is used for the antenna house product of moulding plastics, die cavity 3 is the curved surface form, and die cavity 3 highly increases gradually from the middle part to both ends. The cavity 3 of the existing mold is planar, after the radome product is subjected to injection molding, the radome product starts to be planar, then naturally warps and deforms, the middle of the radome product gradually warps, the two ends of the radome product gradually sink, and finally the radome product is in a curved surface shape protruding upwards. And the die cavity 3 of the mould of this patent is the curved surface form, and after the antenna house product injection moulding, the centre is low, both ends are high, is bellied curved surface form downwards, then natural warpage warp, and the centre upwarps gradually, both ends sink gradually, nevertheless is the plane or is close to the plane finally. Therefore, this patent makes the antenna house product obtain with the deformation in advance that natural warpage deformation trend is opposite through improving the structure of die cavity 3, utilizes this deformation in advance can effectively offset the deformation that natural warpage arouses, makes the product finally be planar or nearly planar.

The curvature of the cavity 3 can be obtained by the following method: the actual deformation condition of the antenna housing product manufactured by the existing mold is measured, and then if the antenna housing product manufactured by the existing mold sinks towards h, the cavity 3 is higher than the cavity 3 of the existing mold at the corresponding measuring position by h. The deformation trend and the deformation of the antenna housing product can be estimated through the mold flow analysis result, then the cavity 3 deforms in the opposite direction, and the deformation at the corresponding position is the same. The curved surface of the cavity may be a circle having the length of the long side of the cavity as a radius.

The mould for predeformation of the antenna housing product comprises an upper mould 1 positioned above, a lower mould 2 positioned below and an insert. A cavity 3 is arranged at the junction of the upper die 1 and the lower die 2, a groove or a bulge corresponding to the antenna housing product is arranged at the upper part of the insert, and the groove or the bulge is a part of the cavity 3; a thimble 4 is arranged in the lower die 2, a recess 5 with an upward opening is arranged on the upper end surface of the lower die 2, and the thimble 4 extends out of the recess; the insert is detachably connected to the concave part 5, and the top of the thimble 4 abuts against the bottom of the insert. This patent adopts the form of inserts to bear and found the die cavity, and the convenience is through changing the inserts, satisfies the preparation of the antenna house of different curved surface degree requirements. In fig. 3, the bottom of the insert is curved, and the height of the thimble 4 gradually increases from the middle of the mold to both sides. The number of the thimbles can be increased along with the increase of the area of the antenna cover. The height of the thimble can also be changed according to the height change of the bottom of the insert. The thimbles are preferably arranged in a matrix in the grooves to increase the support strength. The upper end surface of the thimble preferably corresponds in shape to the bottom surface of the insert to increase the contact area.

The mold design scheme of this patent is simple, can effectively shorten the development cycle of mould in the aspect of improving the product plane degree, saves mould development cost, and the mould adds convenient and fast, and this mold design scheme is in the mold development who is used for large-scale antenna house plastic products, and is effective reliable after verifying, and to a great extent has improved antenna house class product warp deformation to greatly increased the protective effect of antenna house product to antenna base station, promoted antenna base station's stability and life.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1. A pre-deformation mold for an antenna housing product comprises a cavity for injection molding of the antenna housing product, and is characterized in that the cavity is curved, and the height of the cavity is gradually increased from the middle part to two ends;

the mould for pre-deforming the antenna housing product comprises an upper mould and a lower mould, wherein the upper mould is positioned above the lower mould;

the antenna housing product pre-deformation mold further comprises an insert, wherein a groove or a protrusion corresponding to the antenna housing product is arranged at the upper part of the insert, and the groove or the protrusion is a part of the cavity;

a thimble is arranged in the lower die, a recess with an upward opening is arranged on the upper end surface of the lower die, and the thimble extends out of the recess;

the insert is detachably connected to the concave part, and the top of the ejector pin abuts against the bottom of the insert.

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