A luggage reinforcement structure and its manufacturing process

Abstract

This invention discloses a luggage reinforcement structure and its manufacturing process, comprising an aluminum panel and stress ribs stamped at the central stress position of the aluminum panel. Each stress rib consists of short ribs and long ribs spaced apart from the short ribs, with one or more of each type. Each stress rib includes a stamped strip-shaped recess and a reinforcing rib joined to the strip-shaped recess. A strip-shaped cutout is provided at the strip-shaped recess, and the reinforcing rib is welded to the strip-shaped recess. This luggage reinforcement structure and its manufacturing process can assist the stamping operation through the design of the cutout, avoiding the formation of recesses around the edges, thereby processing multiple reinforcing rib structures on the aluminum panel.

Description

Technical Field

[0001] This invention relates to a luggage reinforcement structure and its manufacturing process. Background Technology

[0002] Early suitcases were made of wood or other heavy materials. With the popularization of air travel, suitcases tended to be made of lighter hard plastic or cloth. Most models also come with built-in wheels and can be easily pulled with a handle. After 2010, suitcases with four wheels also appeared, which can not only rotate 360 ​​degrees, but also can be easily pushed on flat ground.

[0003] Suitcases can also be categorized by their outer shell into hard-shell and soft-shell suitcases. Hard-shell suitcases are more durable and suitable for luggage requiring more protection. Soft-shell suitcases are generally lighter than hard-shell suitcases and are made of more flexible materials. However, the zippers on soft-shell suitcases are more likely to burst open if the suitcase is overloaded with items.

[0004] Existing hard-shell suitcases made of aluminum alloy require reinforcing ribs to be machined into the suitcase panel to compensate for stress resistance. However, in actual processing, it has been found that directly stamping the aluminum panel can easily cause dents around the edges, making it difficult to machine multiple reinforcing ribs into the aluminum panel. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a luggage reinforcement structure and its manufacturing process that can assist the stamping process through the design of the cutting opening to avoid the occurrence of dents around the edges, thereby processing multiple reinforcing rib structures on an aluminum panel.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A luggage reinforcement structure includes an aluminum panel and a stress rib stamped at the central stress position of the aluminum panel. The stress rib is composed of short ribs and long ribs spaced apart from the short ribs. There are more than one short rib and one long rib. The stress rib includes a stamped strip-shaped recess and a reinforcing rib joined to the strip-shaped recess. The strip-shaped recess has a strip-shaped cut. The reinforcing rib is fixed to the strip-shaped recess by welding.

[0008] Preferably, the cutting direction of the strip-shaped cut is consistent with the extension direction of the strip-shaped recess.

[0009] Preferably, the reinforcing rib is welded to the strip-shaped recess at the outer periphery of the strip-shaped recess.

[0010] Preferably, the reinforcing rib forms a welded fit at the strip-shaped cutout within the strip-shaped recess.

[0011] Preferably, the shape of the reinforcing rib matches the shape of the strip-shaped recess and has a reinforcing protrusion that fills the strip-shaped cut.

[0012] Another technical problem to be solved by the present invention is to provide a manufacturing process for a luggage reinforcement structure, comprising the following steps:

[0013] The aluminum coil is opened and laid flat, and then the flattened aluminum coil is leveled using an axial pressing operation.

[0014] The flattened aluminum coil is cut to obtain aluminum panels;

[0015] Locate the central stress position of the aluminum panel;

[0016] Cut strips on the aluminum panel according to the positioning location;

[0017] The strip-shaped cut edge is continuously stamped using a stamping machine;

[0018] The aluminum panel after stamping is then reinforced by welding ribs.

[0019] As a preferred method, the method of leveling the laid-out aluminum coil using axial pressing is as follows:

[0020] The aluminum coil is fed into a nine-axis axial pressing machine for leveling.

[0021] The bearing positions of this nine-axis axial compression equipment are set in a gradient, with the inlet position having the highest horizontal height and the outlet position having the lowest horizontal height.

[0022] The aluminum coil is leveled repeatedly until the pressure sensor only appears at the outlet position, thus completing the leveling process.

[0023] As a preferred method, the method for locating the central stress position of the aluminum panel is as follows:

[0024] The positions of both sides of the aluminum panel are determined by laser positioning.

[0025] Then, laser marking is performed at the central stress position of the aluminum panel to mark the location of the strip cut.

[0026] As a preferred method, the strip-shaped cut position is continuously stamped using a stamping equipment as follows:

[0027] A concave mold corresponding to the shape of the reinforcing rib is set below the strip cut;

[0028] The punching head of the punching machine is continuously punched at the strip-shaped cut position until the entire laser-marked strip-shaped cut position is punched once.

[0029] Repeat the stamping process at the strip-shaped cut until the strip-shaped cut forms a strip-shaped recess.

[0030] As a preferred method, the method for welding reinforcing ribs onto the stamped aluminum panel is as follows:

[0031] A reinforcing rib that fits into the strip-shaped recess is used for bonding;

[0032] Electric welding is used at the outer periphery where the strip-shaped recess and the reinforcing rib meet;

[0033] The strip-shaped cut where the reinforcing rib contacts the strip-shaped recess can be welded using electric welding.

[0034] The beneficial effects of this invention are:

[0035] This solution first employs a nine-axis leveling design, which processes and levels the purchased aluminum coil into a high-stress aluminum panel structure. Then, after determining the central stress position of the aluminum panel through laser calibration, the position of the strip cutting kerf is determined, and stamping is performed based on the position of the strip cutting kerf. This method of cutting before stamping can minimize the peripheral deformation caused by directly stamping the entire aluminum panel. After stamping, reinforcing ribs that match the stamped shape are welded together to complete the processing of reinforcing ribs on the aluminum panel. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of a luggage reinforcement structure according to the present invention;

[0037] Figure 2 This is a partial enlarged view of a luggage reinforcement structure according to the present invention. Detailed Implementation

[0038] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example

[0042] See Figure 1-2 As shown, a luggage reinforcement structure includes an aluminum panel 1 and a stress rib 2 stamped at the central stress position of the aluminum panel 1. The stress rib 2 is composed of short ribs 21 and long ribs 22 arranged at intervals from the short ribs 21. There are more than one short rib 21 and one long rib 22. The stress rib 2 includes a stamped strip-shaped recess 23 and a reinforcing rib 24 joined to the strip-shaped recess 23. The strip-shaped recess 23 is provided with a strip-shaped cutout 25. The reinforcing rib 24 is fixed to the strip-shaped recess 23 by welding.

[0043] The cutting direction of the strip-shaped cutout 25 is consistent with the extension direction of the strip-shaped recess 23. The strip-shaped cutout 25 is generally cut vertically, and can be cut into a long rib 22 or a short rib 21 structure as needed. It should be noted that the design of a long rib 22 and a short rib 21 is generally used, and multiple ribs are arranged in parallel to form multiple stress ribs 2.

[0044] The reinforcing rib 24 is welded to the strip-shaped recess 23 at the outer periphery of the strip-shaped recess 23, and the reinforcing rib 24 is welded to the strip-shaped cut 25 inside the strip-shaped recess 23. The reinforcing rib 24 is made of the same material as the aluminum panel 1, and during welding, the reinforcing rib 24 and the aluminum panel 1 are made to fit together as closely as possible.

[0045] The shape of the reinforcing rib 24 fits the shape of the strip-shaped recess 23 and has a reinforcing ridge that fills the strip-shaped cutout 25. In another embodiment of this application, considering the stability of the reinforcing rib 24, an additional reinforcing ridge can be added to form a retaining structure with the strip-shaped cutout 25, thereby providing more welding positions and a more secure connection in the welding process.

[0046] A manufacturing process for a luggage reinforcement structure includes the following steps:

[0047] The aluminum coil is opened and laid flat, and then the flattened aluminum coil is leveled using an axial pressing operation.

[0048] The flattened aluminum coil is cut to obtain aluminum panel 1;

[0049] Locate the central stress position of aluminum panel 1;

[0050] Cut a strip cut 25 on the aluminum panel 1 according to the positioning position;

[0051] The strip-shaped cutout at position 25 is continuously stamped using a stamping machine;

[0052] The aluminum panel 1 after stamping is then welded with reinforcing ribs 24.

[0053] The method for leveling a flattened aluminum coil using axial pressing is as follows:

[0054] The aluminum coil is fed into a nine-axis axial pressing machine for leveling.

[0055] The bearing positions of this nine-axis axial compression equipment are set in a gradient, with the inlet position having the highest horizontal height and the outlet position having the lowest horizontal height.

[0056] The aluminum coil is leveled repeatedly until the pressure sensor only appears at the outlet position, thus completing the leveling process.

[0057] The method for locating the central stress position of aluminum panel 1 is as follows:

[0058] The positions of both sides of aluminum panel 1 are determined by laser positioning;

[0059] Then, laser marking is performed at the central stress position of the aluminum panel 1, marking the position of the strip cut 25 on the aluminum panel 1.

[0060] It should be noted that the laser positioning method involves first determining the coordinate point on the left side of aluminum panel 1, then determining the coordinate point on the right side of aluminum panel 1, then determining the coordinate point on the top side of aluminum panel 1, and finally determining the coordinate point on the bottom side of aluminum panel 1 to complete the shape positioning of the entire aluminum panel 1. Then, based on the positioning results, the central stress position is determined and laser marking is performed.

[0061] The method for continuously stamping the strip-shaped cutout at position 25 using a stamping equipment is as follows:

[0062] A concave mold corresponding to the shape of the reinforcing rib 24 is provided below the strip cutout 25;

[0063] The punching head of the punching machine continuously punches the strip-shaped cutout 25 until all the laser-marked strip-shaped cutouts 25 are punched in one go.

[0064] Repeat the stamping process at the strip-shaped cutout 25 until the strip-shaped cutout 25 is formed into a strip-shaped recess 23.

[0065] It should be noted that the length of the stamping head is less than the length of the strip cut 25, and continuous stamping is performed at the length of the strip cut 25.

[0066] The method for welding the reinforcing ribs 24 to the aluminum panel 1 after stamping is as follows:

[0067] A reinforcing rib 24 that fits into the strip-shaped recess 23 is used to fit it;

[0068] Electric welding is used at the outer periphery where the strip-shaped recess 23 and the reinforcing rib 24 fit together;

[0069] The reinforcing rib 24 is welded to the strip-shaped cut 25 where it contacts the strip-shaped recess 23 by electric welding.

[0070] The beneficial effects of this invention are:

[0071] This solution first employs a nine-axis leveling design, which processes and levels the purchased aluminum coil into a high-stress aluminum panel structure. Then, after determining the central stress position of the aluminum panel through laser calibration, the position of the strip cutting kerf is determined, and stamping is performed based on the position of the strip cutting kerf. This method of cutting before stamping can minimize the peripheral deformation caused by directly stamping the entire aluminum panel. After stamping, reinforcing ribs that match the stamped shape are welded together to complete the processing of reinforcing ribs on the aluminum panel.

[0072] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A luggage case reinforcing structure comprising an aluminum panel and a stress rib punched at a central stress position of the aluminum panel, characterized in that: The stress rib is composed of short ribs and long ribs arranged at intervals with the short ribs, and the long ribs are provided with one or more than one, the stress rib includes a strip-shaped recess formed by stamping, and a reinforcing rib engaged with the strip-shaped recess, the strip-shaped recess is provided with a strip-shaped cutting port formed before stamping, and the reinforcing rib is fixed with the strip-shaped recess by welding.

2. The luggage reinforcing structure of claim 1, wherein: The cutting direction of the strip-shaped cutting port is consistent with the extension direction of the strip-shaped recess.

3. The luggage reinforcing structure of claim 1, wherein: The reinforcing rib is welded with the strip-shaped recess at the outer circumferential position of the strip-shaped recess.

4. The luggage reinforcing structure of claim 3, wherein: The reinforcing rib is welded with the strip-shaped recess at the strip-shaped cutting port in the strip-shaped recess.

5. The luggage reinforcing structure of claim 4, wherein: The shape of the reinforcing rib is consistent with the shape of the strip-shaped recess, and has a reinforcing ridge filled with the strip-shaped cutting port.

6. A process for producing a luggage case reinforcing structure, characterized by, The method comprises the following steps: The aluminum roll is opened and flattened, and the flattened aluminum roll is flattened by shaft pressing operation; The flattened aluminum roll is cut to obtain an aluminum panel; The central stress position of the aluminum panel is positioned; The aluminum panel is cut according to the positioning position to form a strip-shaped cutting port; The strip-shaped cutting port position is continuously stamped by a stamping device; The aluminum panel after stamping is welded with a reinforcing rib.

7. The process for producing a luggage reinforcing structure according to claim 6, wherein The method for flattening the flattened aluminum roll by shaft pressing operation is: The aluminum roll is sent into a nine-shaft shaft pressing device for flattening; The bearing position of the nine-shaft shaft pressing device is arranged in a gradient, and the horizontal height of the inlet position is the highest and the horizontal height of the outlet position is the lowest; The aluminum roll is repeatedly flattened for multiple times until the pressure sensing only appears at the outlet position to complete the flattening.

8. The process for producing a luggage reinforcing structure according to claim 6, wherein The method for positioning the central stress position of the aluminum panel is: The positions of the two sides of the aluminum panel are determined by laser positioning; Then, the central stress position of the aluminum panel is laser marked to mark the position of the strip-shaped cutting port on the aluminum panel.

9. The process for producing a luggage reinforcing structure according to claim 8, wherein The method for continuously stamping the strip-shaped cutting port position by the stamping device is: A concave die corresponding to the shape of the reinforcing rib is arranged below the strip-shaped cutting port; The stamping head of the stamping machine continuously stamps the position of the strip-shaped cutting port until the strip-shaped cutting port marked by laser is completely stamped once; The stamping at the strip-shaped cutting port is repeated until the strip-shaped cutting port is formed into a strip-shaped recess.

10. The process for producing a luggage reinforcing structure according to claim 9, wherein The method for welding the reinforcing rib on the aluminum panel after stamping is: The reinforcing rib is fitted with the strip-shaped recess; The fitting outer circumferential position of the strip-shaped recess and the reinforcing rib is welded by electric welding; The strip-shaped cutting port contacted by the reinforcing rib and the strip-shaped recess is welded by electric welding.

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