Method of manufacturing shell for hard suitcase and assembled shell

Abstract

The invention discloses a method of manufacturing a shell for a hard suitcase and an assembled shell. The method comprises: firstly, dividing the shell into side shells and a middle shell; forming the middle shell by stamping and bending and forming the side shells by drawing; and then assembling the side shells and the middle shell into the integrated shell. The structure of the assembled shell comprises, in the width or length direction of the shell, a first side portion, a middle portion and a second side portion which are sequentially assembled and fixed. The first side portion and the second side portion are located on both left and right sides or upper and lower sides of the middle shell, respectively, and are correspondingly formed into left and right side plates or upper and lower side plates forming the shell. The upper and lower sides or the left and right sides of the middle shell are bent to form upper and lower side plates or left and right side plates of the shell, respectively. According to the invention, the development and production efficiency of the shell are effectively improved, and the development and production costs are reduced. Moreover, the variability of the appearance of the shell can be realized, and therefore, the market competiveness of the product is improved.

Description

technical field [0001] The invention relates to the field of cases and bags, in particular to a case shell processing method for hard cases and bags and an assembled case case. Background technique [0002] In the luggage industry, there are currently two production processes for the molding of trolley aluminum box shells: [0003] The first production process is the stamping and bending process: such as Figure 1~3 As shown, taking the rear box shell of the pull-rod aluminum box as an example, a whole piece of aluminum plate 1 with a good appearance shape is used to form a box shell 3 with a cutout 2 through a bending process, and then an external matching part 4 is used to cover it. individual cuts. In actual production, this production process can be used to form a box shell with a more complex appearance, but there are the following problems: (1) The process is complicated, which is not conducive to improving production efficiency, and the forming accuracy is low. It i...

AI Technical Summary

Problems solved by technology

In actual production, this production process can be used to form a box shell with a more complex appearance, but there are the following problems: (1) The process is complicated, which is not conducive to improving production efficiency, and the forming accuracy is low

It is manifested in: to use the bending process to form a box shell, it must be carried out sequentially according to the steps of the process arrangement, and at least eight edges of the box shell need to be bent to form a box shell, and the process is complicated, which is not conducive to improving Production efficiency; at the same time, due to the scattered process of forming edges, deviations are prone to occur during repeated positioning, so the dimensional accuracy of the formed box shell is low

(2) Forming control is difficult, the development cycle is long, and the development cost is high

It is manifested in: when using the bending process to produce a more complex box shell, the control of the edge forming process is more complicated, and the entire research and development process of the box shell needs to invest a large number of special molds, resulting in a long development cycle and high development costs

(3) if image 3 As shown, because there are cutouts that must be reserved in the bending process of the box shell, it is necessary to add matching parts to cover these cutouts, which increases the cost of product development and production

When using this production process in actual production, the process of forming the edges is relatively concentrated, and there is no need to separate (that is, separate the parts of the box shell) for molding. The formed box shell has high dimensional accuracy, but there are the following problems: (1 ) The appearance of the product is single

It is manifested in: using the deep drawing process to produce a complete box shell, limited by the deep drawing process, the box shell can only form some simple shapes on the front side of the box shell during the deep drawing process, and the appearance shape cannot be formed on the side. The side surface can only be processed by stamping after the box shell is deep-drawn, but this requires sequential processing of the four sides of the box shell, and the process is complicated; at the same time, repeated positioning is required during the processing process, so The appearance shape of the box shell after stamping often has more defects; at the same time, due to the limitation of the box shell already formed, the shape of the side stamping can generally only be some relatively simple appearance shapes; in summary, the deep drawing process forming process The appearance of the products that come out will appear relatively single, and its market competitiveness is limited.

(2) The molding control is difficult and the production yield is low

It is manifested in: when using the deep drawing process to produce a box shell with a large deep drawing depth and complex shape, since the deep drawing process is very sensitive to the performance parameters of the aluminum plate, the control of the forming process is very complicated, resulting in a high yield rate during production. very low

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