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Filter cavity body, cavity body filter, manufacturing methods and die-casting mold

A cavity filter and die-casting mold technology, which is applied in the field of radio frequency communication, can solve the problems of difficult processing, material waste, long mold making time, difficult processing and operation, etc., and achieves the effect of saving materials, meeting quality requirements, and having a smooth surface.

Active Publication Date: 2012-02-22
ANHUI TATFOOK M&E TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the research and practice of the prior art, the inventors of the present invention found that it would take too much man-hours to process a large piece of metal material into a cavity filter with a heat dissipation structure by using a numerical control machining center, especially for The processing of metal heat sinks in the heat dissipation part is not only difficult to process but also increases material waste. At present, the processing time for a single cavity filter with heat dissipation structure is about 40 hours by using a CNC machining center
Die-casting the filter part and the heat dissipation shell by the die-casting process can avoid the waste of materials, but because it is necessary to make the mold for the cavity isolation rib of the filter part of the cavity filter with a heat dissipation structure, it is relatively complicated, and it usually takes 5 days to complete the process. The mold is completed, and the die-casting process cannot meet the requirements of smooth surface and precise structure of the filter part. If the die-cast cavity filter with heat dissipation structure is further processed by a CNC machining center, due to the attached heat dissipation structure However, the shape is large, so it is not easy to process and operate. The die-casting process needs to overcome the problem of long mold making time and the rough structure of the die-casting filter cavity.

Method used

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  • Filter cavity body, cavity body filter, manufacturing methods and die-casting mold
  • Filter cavity body, cavity body filter, manufacturing methods and die-casting mold
  • Filter cavity body, cavity body filter, manufacturing methods and die-casting mold

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1: as figure 2 Shown is a flowchart of a method for manufacturing a filter cavity with a heat dissipation structure provided by an embodiment of the present invention, and the method for manufacturing a filter cavity with a heat dissipation structure includes:

[0043] A1, fix the filter cavity in the die-casting mold of the heat dissipation structure;

[0044] In the steps of this method, the filter cavity is fixed as an insert in the die-casting mold of the heat dissipation structure. The heat dissipation structure in the embodiment of the present invention is a metal heat dissipation shell, and the die-casting mold of the heat dissipation structure is mainly used for The die-casting mold for die-casting the heat dissipation structure part, and in the embodiment of the present invention, the mold not only needs to die-cast the heat dissipation structure but also needs to accommodate the filter cavity as an insert, and the filter cavity is fixed on the die-...

Embodiment 2

[0050] Embodiment 2: as image 3 Shown is a flowchart of a method for manufacturing a filter cavity with a heat dissipation structure provided by an embodiment of the present invention, and the method for manufacturing a filter cavity with a heat dissipation structure includes:

[0051] A0, using a CNC machine tool to make the filter cavity;

[0052] In this step, CNC machine tools are used to machine the aluminum ingots, and actions such as turning, milling, and cutting are completed on the aluminum ingots according to the actual size of the filter cavity, and the associated aluminum ingots are made into the filter cavity, At this time, the processed filter cavity does not have a heat dissipation structure, but is used as a filter cavity insert in the subsequent die-casting process. In order to ensure better processing quality and processing efficiency, the CNC machine tool in the embodiment of the present invention CNC machining centers are preferred. This step includes ma...

Embodiment 3

[0060] Embodiment 3: The embodiment of the present invention provides a method for manufacturing a cavity filter, such as Figure 4 shown, including:

[0061] A1, fix the filter cavity in the die-casting mold of the heat dissipation structure;

[0062] A2, injecting metal liquid into the die-casting mold;

[0063] A3, die-casting the filter cavity and the metal liquid into the filter with heat dissipation structure

[0064] cavity;

[0065] For detailed descriptions of steps A1, A2, and A3 in the implementation of the present invention, please refer to the introduction in the above-mentioned embodiment 1, and details are not repeated here.

[0066] A4, closing the filter cavity with a cover plate;

[0067] For a cavity filter including a resonant rod, this step further includes installing the resonant rod in the cavity of the cavity filter before closing the filter cavity with a cover plate.

[0068] For the sealing method, laser welding can be selected to fix the cover p...

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Abstract

The invention discloses a filter cavity body with a radiating structure, a cavity body filter with a radiating structure, a manufacturing method of the filter cavity body with the radiating structure, a manufacturing method of the cavity body filter with the radiating structure, and a die-casting mold applied in the methods. The manufacturing method of the filter cavity body comprises the following steps of: fixing the filter cavity body in the die-casting mold of the radiating structure, injecting metal liquid in the die-casting mold, and die-casting the filter cavity body and the metal liquid into the filter cavity body with the radiating structure. The filter cavity body comprises the radiating structure and a filter cavity body embedding piece. The die-casting mold is provided with a positioning device for fixing the filter cavity body on a moving mold or a fixed mold; and the moving mold and the fixed mold are assembled into a cavity body containing the filter cavity body and metal solution. In the invention, a split processing mode is adopted for the filter cavity body and the radiating structure, so that not only is the accuracy requirement for the filter cavity body structure ensured, but also the production efficiency of the filter cavity body with the radiating structure is improved.

Description

technical field [0001] The invention relates to the technical field of radio frequency communication, in particular to a filter cavity with a heat dissipation structure, a cavity filter with a heat dissipation structure, a method for manufacturing a filter cavity with a heat dissipation structure, a method for manufacturing a cavity filter with a heat dissipation structure and Die casting molds for this method. Background technique [0002] As a frequency selection device, filters are widely used in the field of communication, especially in the field of radio frequency communication. In the base station where the communication system completes signal transmission and reception, the filter is used to select the communication signal and filter out the clutter or interference signal outside the frequency of the communication signal, and the filter cavity is an important part of the cavity filter. cannot be ignored. [0003] At present, in mobile communication base station sys...

Claims

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Application Information

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IPC IPC(8): H01P1/207H01P11/00B22D17/22
Inventor 徐晓亮常凯
Owner ANHUI TATFOOK M&E TECH