A kind of tearing and stretching preparation method of shielding cover
A shielding cover and stretching technology, which is applied in the field of tearing and stretching preparation of shielding covers, can solve the problems of high production costs, achieve the effects of reducing spacing, avoiding waste of raw materials, and improving material utilization
Active Publication Date: 2022-06-28
HUNAN LAIMU ELECTRONICS
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Problems solved by technology
[0004] The purpose of the present invention is to provide a tearing and stretching preparation method of the shielding cover in order to overcome the above-mentioned defects in the prior art. The original stripping process is replaced by the tearing and stretching process, and the material utilization rate is improved. , to solve the process defects of high production cost
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Embodiment
[0033] The tearing and stretching preparation method of the shielding cover in this embodiment includes the following steps:
[0034] Break-point type tearing of the outer ring of the material belt, so that the raw material is torn to form a first tearing line 1, and a plurality of first continuous material point arrays 2 are reserved around the outer ring.
[0035] The breakpoint type tear strips the inner ring with the outer ring of the preset size inward, so that the raw material is torn apart to form the second tear line 3 inside the first tear line 1, and it is ensured that a plurality of first tear lines are reserved around the inner circle. Two connecting point arrays 4, the connecting points in the second connecting point array 4 and the connecting points in the first connecting point array 2 are staggered, so as to obtain a tape with the head and tail connecting the material strips. The preset size inward is 0.3-0.7 mm inward from the first tear line 1 .
[0036] At ...
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Abstract
The invention relates to a tearing and stretching preparation method of a shielding cover, comprising: tearing the outer ring of a material tape with a break point, tearing the raw material to form a first tearing line, and ensuring that a plurality of The first connecting point array; the break point type tearing the inner ring of the preset size inwards of the outer ring of the material belt, so that the raw material is torn apart to form the second tearing line inside the first tearing line, and it is guaranteed to be around the inner ring A plurality of second connecting point arrays are reserved to obtain a material tape connecting the head and tail of the material strip; stretching, adjustment, blanking, and tail cutting processes are performed on the obtained material tape to obtain the final shielding cover product. Compared with the prior art, the present invention replaces the original material stripping process through the tearing and stretching process, improves the material utilization rate, and solves the process defect of high production cost.
Description
technical field [0001] The invention relates to a processing method of a shielding cover, in particular to a tear-stretching preparation method of the shielding cover. Background technique [0002] In the existing industrial technology, it is applied to many hardware products made of metal materials, and the forming process is diverse. More applications. The hardware produced by stamping-grade dies has the advantages of high precision, strong stability, high production efficiency and low cost, such as mobile phone SIM card trays, signal shields for electronic components, communication connectors, etc. In the production of some fully enclosed shield molds, the stretching process is an indispensable molding process. [0003] When designing stretch shield molds today, because of the flow of materials during stretching, tapes with extended fluidity are required when designing molds. In the past, the traditional process of designing the strip is to cut and cut the material to ...
Claims
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IPC IPC(8): B21D35/00B21D43/28
CPCB21D35/001B21D35/002B21D43/287
Inventor 朱大朋李仁贵朱新爱
Owner HUNAN LAIMU ELECTRONICS