Box body and cover plate and manufacturing process thereof

A manufacturing process and cover plate technology, which is applied to the box body and cover plate manufacturing process and the field of box body and cover plate manufactured by this process, can solve the problems of high production cost, many processes, and low efficiency, and achieve process saving , the effect of area increase

Active Publication Date: 2010-12-01
QINGDAO HAIER MOLDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that, using the above-mentioned existing manufacturing process to manufacture the box body and the back cover plate, not only there are many waste materials, but also there are many processes, thus causing the unfavorable situation of high production cost and low efficiency

Method used

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  • Box body and cover plate and manufacturing process thereof
  • Box body and cover plate and manufacturing process thereof
  • Box body and cover plate and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] In this embodiment, a case and a cover of a drum type washing machine are taken as an example for description. The box is made of sheet steel and has maintenance openings in the back of the box. The cover plate is installed at the opening of the box body and is used to cover the opening. Except for the manufacturing process of the box body and the cover plate, the similarities with the prior art will not be repeated here. The manufacturing process of the box opening and the cover part related to the present invention will be described below.

[0037] Since the cover plate needs to cover the opening of the box body, the cover plate partially overlaps with the peripheral portion of the opening of the box body. Therefore, in the prior art, as mentioned in the background, generally, the box body and the cover plate are formed of different ...

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PUM

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Abstract

The invention provides a process for manufacturing a box body and a cover plate as well as the box body and cover plate manufactured by the manufacturing process. The box body is provided with an opening (12'), the cover plate (11) is arranged at the opening (12') of the box body. The manufacturing process includes: a stretching working procedure, namely stretching processing is carried out on a plate (1) used for forming the box body, so as to form a sunk part (2) larger than the opening (12'); a blanking working procedure, namely blanking processing is carried out on the sunk part (2) of the plate (1), so as to separate the cover plate (11); and a levelling working procedure, namely the rest part (21b) of the sunk part (2) on the plates (1) is levelled, so as to form an opening (12') which is coincident with the periphery of the cover plate (11). Thus the box body and cover plate can be simultaneously processed on one plate, not only waste material produced when processing the opening is reasonably utilized, but also two processing working procedures are combined, so that working procedure is saved.

Description

technical field [0001] The invention relates to a manufacturing process of a box body and a cover plate and a box body and a cover plate manufactured by the process, the box body is provided with an opening, and the cover plate is installed at the opening of the box body for covering The opening. Background technique [0002] An opening for maintenance, ie a maintenance hole, is usually provided on the back of the cabinet of the drum type washing machine, and the maintenance hole is covered with a back cover. The back cover can be removed during maintenance, and the back cover can be covered on the maintenance hole during daily use. Considering the needs of handling and use, the back cover needs to meet the "back load" test, "anti-water injection" test, etc., and it must be easy to install. [0003] In the prior art, the casing and the back cover of this washing machine are processed separately. That is to say, make a box with a piece of board, first punch maintenance hol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00D06F39/12D06F39/14
Inventor 米永东郭小春余永刚孙洪起
Owner QINGDAO HAIER MOLDS
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