Middle frame shaping equipment and middle frame shaping method for electronic product

A technology of electronic products and equipment, which is applied in the field of electronic product frame shaping equipment and shaping, can solve the problems of complex thermal shaping process, affecting product performance, and low processing efficiency, so as to save processing cost and product production cost, and improve Frame shaping yield and the effect of saving processing costs

Pending Publication Date: 2018-11-23
DONGGUAN HUAJING POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used methods for the middle frame of metal mobile phones are: (1) The whole aluminum alloy, stainless steel plate, etc. are processed by CNC. And the processing efficiency is low and the cost is high
(2) The general shape of the middle frame is forged by forging, followed by CNC processing, which reduces the CNC machining allowance and improves production efficiency compared with method (1). The disadvantage is that the forging accuracy is poor and the CNC processing volume is still relatively large.
(3) Some low-melting point alloys are formed by die-casting, and then processed into a middle frame by CNC. It is characterized by low cost and easy mass production for some low-melting point alloys, but the surface density of processed products is not enough, and segregation is easy to occur. Microstructure The uniformity is poor, and the appearance cannot meet the requirements after treatment
Reshaping of the MIM middle frame has always been a difficult problem in the industry, because the size of the middle frame blank is large, the structure is complex, and the structural deformation after sintering is not directional, and the deformation is basically wavy or irregularly twisted, which makes it difficult to maintain the middle frame blank after shaping. To achieve the ideal structural effect
[0006] Now most of the products produced by the MIM s

Method used

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  • Middle frame shaping equipment and middle frame shaping method for electronic product

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0060] 1. Install the needle array pressurized heat preservation plastic fixture on the four-column hydraulic press.

[0061] 2. According to the traditional method, adjust the jig and adjust the pressing position of the hydraulic press.

[0062] 3. Connect the electric heating device to the orthopedic fixture, and preheat the pressure needle, the preheating temperature is 200°C.

[0063] 4. Place the middle frame blank of the mobile phone on the lower needle array jig.

[0064] 5. Start the hydraulic press, and the upper and lower molds of the shaping jig are pressed and shaped. When pressing, the holding pressure is 18MPa, and the holding time is 1.5s.

[0065] 6. Open the mold, take out the shaped mobile phone middle frame, cool at room temperature for 5 minutes, and enter the next process.

[0066] After testing, the yield rate of the product is 92%

example 2

[0068] 1. Install the needle array pressurized heat preservation plastic fixture on the four-column hydraulic press.

[0069] 2. According to the traditional method, adjust the jig and adjust the pressing position of the hydraulic press.

[0070] 3. Connect the electric heating device to the orthopedic fixture, and preheat the pressure needle, the preheating temperature is 220°C.

[0071] 4. Place the middle frame blank of the mobile phone on the lower needle array jig.

[0072] 5. Start the hydraulic press, and the upper and lower molds of the shaping jig are pressed and shaped. When pressing, the holding pressure is 18MPa, and the holding time is 2s.

[0073] 6. Open the mold, take out the shaped mobile phone middle frame, cool at room temperature for 10 minutes, and enter the next process.

[0074] After testing, the yield rate of the product is 91%.

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Abstract

The invention discloses middle frame shaping equipment and a middle frame shaping method for an electronic product. The equipment comprises an upper mold plate and a lower mold plate; a middle frame blank part is shaped when the upper mold plate and the lower mold plate are assembled; the equipment further comprises upper pressure needle arrays which are distributed at the bottom of the upper moldplate, and/or lower pressure needle arrays which are distributed at the top of the lower mold plate; and the upper pressure needle arrays and/or the lower pressure needle arrays comprise a pluralityof columnar pressure needles which are arranged in a spaced manner so as to provide a plurality of dispersed stress contact points for the shaped middle frame blank part. The middle frame shaping equipment and the middle frame shaping method for the electronic product achieve a good shaping effect on a middle frame product and are high in precision and relatively low in cost.

Description

technical field [0001] The invention relates to a frame shaping device and a shaping method for an electronic product. Background technique [0002] With the development of the mobile phone industry, consumers have put forward higher requirements for the hand feel, drop resistance, corrosion resistance and appearance of mobile phones. Among them, the metal mobile phone middle frame has become more and more mainstream due to its unique characteristics. At present, the commonly used methods for the middle frame of metal mobile phones are: (1) The whole aluminum alloy, stainless steel plate, etc. are processed by CNC. And processing efficiency is low, and cost is high. (2) The general shape of the middle frame is forged by forging, and the subsequent CNC processing is characterized by reducing the CNC machining allowance and improving production efficiency compared with method (1). The disadvantage is that the forging accuracy is poor and the CNC processing volume is still rel...

Claims

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Application Information

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IPC IPC(8): B21D3/00
CPCB21D3/00
Inventor 张柯张海洋
Owner DONGGUAN HUAJING POWDER METALLURGY
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