A built-in in-mold injection molding antenna device

Abstract

The present invention discloses a built-in in-mold injection molding antenna device, which belongs to the field of injection mold technology, and includes an upper mold core, a lower mold core, an antenna steel sheet, a steel sheet positioning component, and a spherical positioning component. The present invention can meet the needs of an integrated antenna of a spherical shell, avoiding the existing metal antenna not fitting properly on the spherical shell and easily causing wrinkles and damage on the surface; compared with LDS laser engraving technology, it can reduce the laser engraving and chemical plating processes, which is relatively environmentally friendly and reduces costs; the manufactured metal antenna product has a high reliability ratio, improves the wear resistance and good conduction performance of the product, and will not break or break; by setting the steel sheet positioning and fixing method and the force point, it can ensure that the metal antenna product will not have deformation, glue leakage, or burrs after molding.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and in particular to a built-in in-mold injection-molded antenna device. Background Art

[0002] With the development of communication technology, more and more products have added wireless communication functions, and communication equipment has become more and more diverse. As a result, the form of antennas has become more and more complex. Antenna is a converter that converts the guided waves propagating on the transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or vice versa. A component used to transmit or receive electromagnetic waves in radio equipment. Engineering systems such as radio communications, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy, all of which use electromagnetic waves to transmit information, rely on antennas to work.

[0003] The existing metal antenna may not fit properly on the spherical shell, which may easily cause wrinkles and damage on the surface, and may cause disconnection and damage. Therefore, an internal in-mold injection molding antenna device is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to solve the problem that the existing metal antenna does not fit properly on the spherical shell, which easily causes wrinkles and damage on the surface, and provides a built-in in-mold injection-molded antenna device.

[0005] The present invention solves the above-mentioned technical problems through the following technical scheme. The present invention includes an upper mold core, a lower mold core, an antenna steel sheet, a steel sheet positioning assembly, and a spherical positioning assembly. The upper mold core and the lower mold core are provided with mold inserts matching the shape of the spherical shell. The upper mold core and the lower mold core form a mold cavity when the mold is closed. The antenna steel sheet is arranged in the mold cavity. The antenna steel sheet is positioned in the mold cavity by the steel sheet positioning assembly. The outer surface of the antenna steel sheet is made highly parallel to the surface of the spherical shell by the spherical positioning assembly.

[0006] Furthermore, the steel sheet positioning assembly includes a plurality of steel sheet positioning holes arranged on the antenna steel sheet and a plurality of first positioning pins arranged through the lower mold core, the outer dimensions of the steel sheet positioning holes match those of the first positioning pins, and the steel sheet positioning holes and the first positioning pins are matched and plugged.

[0007] Furthermore, the steel sheet positioning holes include a plurality of first positioning holes and two second positioning holes, the first positioning holes are opened on the antenna steel sheet, and the second positioning holes are respectively arranged at two feeding ends of the antenna steel sheet.

[0008] Furthermore, the spherical positioning assembly includes a plurality of formed support columns, and the formed support columns are arranged through the lower mold core and contact the lower surface of the antenna steel sheet.

[0009] Furthermore, the molded support column is divided into two types, one is a cylindrical support column, and the other is a square support column.

[0010] Furthermore, the upper end surfaces of the cylindrical support column and the square support column are both arc-shaped.

[0011] Furthermore, the built-in in-mold injection-molded antenna device also includes a plurality of groups of T-shaped positioning components, and the T-shaped positioning components are arranged at the edge of the junction between the antenna steel sheet and the spherical shell.

[0012] Furthermore, the T-shaped positioning assembly includes a T-shaped positioning foot and a second positioning pin which are integrated with the antenna steel sheet. The second positioning pin is arranged through the lower mold core, and a through hole matching the second positioning pin is arranged on the T-shaped positioning foot.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1) It can meet the needs of the one-piece antenna of the spherical shell, avoiding the existing metal antenna from not fitting properly on the spherical shell and easily causing wrinkles and damage on the surface; compared with LDS laser engraving technology, it can reduce the laser engraving and chemical plating processes, which is relatively environmentally friendly and reduces costs;

[0015] 2) The metal antenna product manufactured by this device has a high reliability ratio, improves the wear resistance and good conduction performance of the product, and will not be disconnected or damaged;

[0016] 3) By setting the steel sheet positioning and fixing method and the stress points, it can be ensured that there are no deformation, glue leakage, cracking and other defects in the metal antenna product after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the lower mold core of the present invention (including the antenna steel sheet);

[0019] Figure 3 It is a schematic diagram of the top view of the lower mold core of the present invention (excluding the antenna steel sheet). DETAILED DESCRIPTION

[0020] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0021] This embodiment provides a technical solution: a built-in in-mold injection-molded antenna device, including an upper mold core 1, a lower mold core 2, an antenna steel sheet 6, a steel sheet positioning component, a spherical positioning component, and mold inserts matching the shape of a spherical shell are arranged on the upper mold core 1 and the lower mold core 2. When the upper mold core 1 and the lower mold core 2 are molded together, a mold cavity is formed, and the antenna steel sheet 6 is arranged in the mold cavity. The antenna steel sheet 6 is positioned in the mold cavity by the steel sheet positioning component, and the outer surface of the antenna steel sheet 6 is highly parallel to the surface of the spherical shell by the spherical positioning component. The built-in in-mold injection-molded antenna device can meet the requirements of an integrated antenna of a spherical shell through the arrangement of a steel sheet positioning component and a spherical positioning component. Compared with the existing metal antenna, which may not fit properly on the spherical shell, it is easy to cause wrinkles and damage on the surface.

[0022] In this embodiment, the steel sheet positioning assembly includes a plurality of steel sheet positioning holes provided on the antenna steel sheet 6 and a plurality of first positioning pins 32 provided through the lower mold core 2, and the steel sheet positioning holes match the outer dimensions of the first positioning pins 32. Through the matching and plugging of the steel sheet positioning holes and the first positioning pins 32, the position of the antenna steel sheet 6 can be well fixed, and the antenna steel sheet 6 is prevented from horizontally shifting during the injection molding process, thereby ensuring the stability of the horizontal position of the antenna steel sheet 6.

[0023] In this embodiment, the steel sheet positioning holes include a plurality of first positioning holes 311 and two second positioning holes 312. The first positioning holes 311 are relatively evenly distributed on the antenna steel sheet 6, and the second positioning holes 312 are respectively arranged at two feeding ends of the antenna steel sheet 6. Through the cooperation of the first positioning holes 311 and the second positioning holes 312, the horizontal position positioning function of the entire antenna steel sheet 6 can be realized.

[0024] In this embodiment, the spherical positioning assembly includes a plurality of formed support columns, which are arranged through the lower mold core 2 and contact the lower surface of the antenna steel sheet 6 when in use, thereby playing a supporting role.

[0025] In this embodiment, the forming support column is divided into two types, one is a cylindrical support column 41, and the other is a square support column 42. The cylindrical support column 41 and the square support column 42 are both set through the lower mold core 2. The square support column 42 is set at the lower middle position of the antenna steel sheet 6, and the cylindrical support column 41 is evenly distributed at the lower position of the antenna steel sheet 6. Among them, the square support column 42 plays a major supporting role, and the cylindrical support column 41 plays an auxiliary supporting role. After the front steel sheet positioning assembly is fixed, the mold finds a uniform force point according to the position of the curvature of the metal antenna product, and places the forming ejector pin (forming support column) so that the outer surface of the antenna steel sheet 6 and the surface of the spherical shell (plastic shell) are highly parallel.

[0026] In this embodiment, the upper end surfaces of the cylindrical support column 41 and the square support column 42 are both arc-shaped, which can better ensure that the outer surface of the antenna steel sheet 6 and the surface of the spherical shell (plastic shell) are highly parallel, that is, the vertical position positioning function.

[0027] In this embodiment, the built-in in-mold injection-molded antenna device further includes a plurality of groups of T-shaped positioning components, and the T-shaped positioning components are arranged at the edge of the junction between the antenna steel sheet 6 and the spherical shell.

[0028] In this embodiment, the T-shaped positioning assembly includes a T-shaped positioning foot 51 and a second positioning pin 52 which are integrated with the antenna steel sheet 6. The second positioning pin 52 is arranged through the lower mold core 2, and the T-shaped positioning foot 51 is provided with a through hole which matches the second positioning pin 52. When in use, the second positioning pin 52 passes through the through hole of the T-shaped positioning foot 51, which can ensure that the T-shaped positioning feet 51 on both sides of the antenna steel sheet 6 can be well wrapped by the plastic after plastic injection molding, thereby ensuring the complete combination between the antenna steel sheet 6 and the plastic and improving its firmness.

[0029] In this embodiment, it should be noted that two molding stations are arranged between the upper mold core 1 and the lower mold core 2 of this embodiment, so that two metal antenna products can be molded at one time.

[0030] Working principle: first place the antenna steel sheet 6 on the lower mold core 2. When placing it, the steel sheet positioning component, spherical positioning component, and T-shaped positioning component are used to position the antenna steel sheet 6. Then, the lower mold core 2 and the upper mold core 1 are molded together, and the molten raw material is injected into the mold cavity through the injection port. After a period of time, the mold is opened to take out the product.

[0031] To sum up, the built-in in-mold injection molding antenna device can meet the requirements of an integrated antenna for a spherical shell, avoiding the existing metal antenna that does not fit properly on the spherical shell and easily causes wrinkles and damage on the surface; compared with LDS laser engraving technology, it can reduce laser engraving and chemical plating processes, which is relatively environmentally friendly and reduces costs; the metal antenna product manufactured by this device has a high reliability ratio, improves the product's wear resistance and good conductivity, and will not break or break; the research and development of this device is mainly to solve the molding problems of the spherical shell, through the flattening analysis of the product's spherical appearance, and then to the mold design, mainly for the positioning and fixing methods of the steel sheet and the stress points, through the support of the mold ejector pin, the molding time of the mold, the pressure and other key parameters design, to ensure that the product is not deformed, leaking glue, bursting and other defects after molding.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A built-in in-mold injection-molded antenna device, characterized in that: The invention comprises an upper mold core, a lower mold core, an antenna steel sheet, a steel sheet positioning component, a spherical positioning component, and multiple groups of T-shaped positioning components. The upper mold core and the lower mold core are provided with mold inserts matching the shape of the spherical shell. When the upper mold core and the lower mold core are molded together, a mold cavity is formed. The antenna steel sheet is arranged in the mold cavity. Multiple groups of T-shaped positioning components are arranged at the edge of the junction between the antenna steel sheet and the spherical shell. The antenna steel sheet is positioned in the mold cavity through the steel sheet positioning component. The outer surface of the antenna steel sheet is highly parallel to the surface of the spherical shell through the spherical positioning component. The steel sheet positioning component comprises multiple steel sheet positioning holes arranged on the antenna steel sheet, a steel sheet positioning hole penetrating through the lower mold core, and a steel sheet positioning hole penetrating through the lower mold core. The mold core is provided with a plurality of first positioning pins, the steel sheet positioning hole matches the outer dimensions of the first positioning pin, and the steel sheet positioning hole and the first positioning pin are matched and plugged; the steel sheet positioning hole includes a plurality of first positioning holes and two second positioning holes, the first positioning holes are opened on the antenna steel sheet, and the second positioning holes are respectively arranged at the two feeding ends of the antenna steel sheet; the spherical positioning component includes a plurality of forming support columns, the forming support columns are arranged through the lower mold core and contact with the lower surface of the antenna steel sheet; the forming support columns are divided into two types, one is a cylindrical support column, and the other is a square support column; the upper end faces of the cylindrical support column and the square support column are both arc-shaped; The T-shaped positioning assembly includes a T-shaped positioning foot and a second positioning pin which are integrated with the antenna steel sheet. The second positioning pin is arranged through the lower mold core. The T-shaped positioning foot is provided with a through hole which matches the second positioning pin. The T-shaped positioning foot is matched and plugged with the second positioning pin.

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