Aluminum alloy profile tube and method for producing the same

Abstract

The application discloses an aluminum alloy profile pipe and a preparation method thereof, and aims to provide the aluminum alloy profile pipe and the preparation method thereof, which are processed in the same working position through bending and welding, are simple to operate, and save processing time. The aluminum alloy profile pipe comprises a forming pipe, the middle part of the forming pipe is in an arc shape, the outer side wall of the arc-shaped part of the forming pipe is connected with a mounting buckle, and the mounting buckle is provided with a mounting hole. The core rod inserted in the application is made of hard plastic or hard rubber material, can ensure the smoothness of the visible surface during the bending and forming of the mold, and will not be broken. The rubber sheet arranged can ensure that the forming pipe will not be scratched when being contacted with the forming pipe during the bending and forming, can ensure the smoothness of the visible surface, and can ensure the bending and forming quality of the forming pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum profile, in particular to an aluminum alloy profile pipe and a preparation method thereof. BACKGROUND

[0002] Air suspension is a suspension system of a vehicle, which is usually composed of an air spring, a shock absorber, a guide mechanism, a vehicle body height control system and a connecting pipe. The connecting pipe is mostly an aluminum alloy profile pipe. According to design requirements, the connecting pipe is mostly a structure of a profiled pipe with a mounting piece welded thereon. In the preparation of the connecting pipe, the pipe is first bent and formed, then the formed pipe is transferred to a welding station for welding, and finally the design requirements are met. This processing method is complicated to operate, time-consuming to process and prone to production defects. SUMMARY

[0003] The present application is to overcome the deficiencies of the prior art, such as complicated operation, time-consuming processing and production defects, by providing an aluminum alloy profile pipe and a preparation method thereof, in which bending and welding are performed in the same station, the operation is simple, and the processing is time-saving.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an aluminum alloy profile pipe, comprising a formed pipe, wherein the middle part of the formed pipe is arc-shaped, an installation buckle is connected to the outer side wall of the arc-shaped part of the formed pipe, and the installation buckle is provided with an installation hole.

[0005] The formed pipe is made of aluminum alloy, the middle part of the formed pipe is an arc-shaped L-shaped pipe, and the installation buckle is connected to the outer side wall of the formed pipe, and the installation hole is provided on the installation buckle. The installation buckle is used to fix the formed pipe on the suspension of the vehicle, thereby ensuring the stability of the installation of the formed pipe.

[0006] The present application also discloses a preparation method of the aluminum alloy profile pipe, comprising the following steps:

[0007] S1. inserting a core rod into the formed pipe;

[0008] S2. bending and forming the formed pipe by using a forming die;

[0009] S3. welding the formed pipe and the installation buckle.

[0010] Before the formed pipe is formed, the core rod for forming is inserted into the formed pipe, then the formed pipe is placed into the forming die to be bent and formed by the die, so as to realize the formed pipe meeting the requirements of the formed arc degree. After the forming is completed, the welding of the installation buckle is completed before the formed pipe is taken out of the die, thereby ensuring the preparation of the aluminum alloy profile pipe. The inserted core rod is made of hard plastic or hard rubber material, which can ensure the smoothness of the visible surface during the bending and forming of the die, and will not be broken.

[0011] As preferred, the bending forming and the welding of the mounting buckle in steps S2 and S3 are performed by using a forming die, which comprises a frame, a lower die block and an upper die block vertically slidably connected with the lower die block, the upper die block and the lower die block are respectively connected with the frame, the lower die block is provided with a lower die cavity, the upper die block is provided with an upper die cavity, the lower die cavity and the upper die cavity constitute a forming cavity, and the lower die block is provided with a welding assembly for welding the mounting buckle. The forming die comprises the frame, the lower die block and the upper die block, the upper die block and the lower die block are respectively connected with the frame, the lower die cavity provided by the lower die block and the upper die cavity provided by the upper die block constitute a forming cavity for the bending forming of the forming pipe, and the welding assembly provided on the lower die block can weld the forming pipe after the bending forming and the mounting buckle, thereby ensuring the preparation of the aluminum alloy profile pipe. The die can complete the bending forming and can be used as a clamp for welding, so that the bending forming and the welding can be performed at the same station, and the operation is simple, and the processing time and cost are saved.

[0012] As preferred, the lower die cavity and the upper die cavity are L-shaped, the lower end of the lower die cavity is provided with a stop block, the top of the upper die cavity is provided with a limiting block, the inner wall of the lower die cavity is provided with a guide groove, the outer wall of the upper die block is provided with a guide block, and the guide block is slidably connected with the guide groove. The upper die cavity and the lower die cavity are both L-shaped, and the corner of the upper die cavity is arc-shaped, so as to ensure that the forming pipe can have a smooth visual surface after the bending, the limiting block is arranged on the upper die cavity, and the stop block is arranged on the lower die cavity, so as to limit the position of the forming pipe in the forming cavity, thereby ensuring that the forming pipe is stable in the forming cavity during the forming, and the bending forming quality is ensured. Meanwhile, the guide block and the guide groove can guide the closing of the upper die block and the lower die block, thereby ensuring the bending forming quality.

[0013] As preferred, the inner wall of the upper die cavity is provided with a rubber sheet, and the rubber sheet is in contact with the forming pipe. The rubber sheet arranged on the inner wall of the upper die cavity can ensure that the forming pipe will not be scratched when the rubber sheet is in contact with the forming pipe during the bending forming, thereby ensuring the smooth visual surface and the bending forming quality of the forming pipe.

[0014] As preferred, the top of the upper die block is connected with a telescopic air cylinder one, and the telescopic air cylinder one is connected with the frame. The telescopic air cylinder one can drive the movement of the upper die block, thereby ensuring the closing of the upper die block and the lower die block.

[0015] As preferred, the lower mold side wall is provided with a sliding groove communicating with the lower mold cavity, the welding assembly comprises a sliding block in sliding connection with the sliding groove, the sliding block is provided with a clamping groove for clamping the mounting buckle, and the sliding block side wall is provided with a telescopic cylinder II connected with the rack.

[0016] As preferred, the sliding block is provided with a horizontal arrangement of the give-way groove I and a vertical arrangement of the give-way groove II, both of which communicate with the clamping groove, and the give-way groove I and the give-way groove II are provided with an aluminum welding gun. The give-way groove I on the sliding block is horizontally arranged, the give-way groove II is vertically arranged, and both of them communicate with the clamping groove, so that the aluminum welding gun arranged in the give-way groove I and the give-way groove II can weld the mounting buckle, ensuring the accuracy of the welding position.

[0017] As preferred, the inner bottom surface of the give-way groove I and the give-way groove II is connected with a telescopic cylinder III, and the telescopic end of the telescopic cylinder III is connected with the aluminum welding gun. The inner bottom surface of the give-way groove I and the give-way groove II is connected with the telescopic cylinder III, which can drive the aluminum welding gun to perform telescopic action, ensuring that the aluminum welding gun accurately welds the mounting buckle and the formed pipe, and ensuring the welding quality.

[0018] As preferred, the side wall of the give-way groove I and the give-way groove II is provided with a heat dissipation hole, and the heat dissipation hole is connected with an exhaust fan. The heat dissipation hole arranged on the side wall of the give-way groove I and the give-way groove II can guide the heat generated by welding out, so that the welding position of the mounting buckle and the formed pipe can be quickly cooled, ensuring the welding quality, and the exhaust fan connected with the heat dissipation hole can improve the heat dissipation efficiency, ensuring rapid cooling and improving the welding quality.

[0019] The beneficial effects of the present application are: the inserted core rod is made of hard plastic or hard rubber material, which can ensure smooth and smooth visual surface during mold bending forming, and will not break; the rubber sheet can ensure that there is no scratch when contacting with the formed pipe during bending forming, ensuring the smoothness of the visual surface, and ensuring the bending forming quality of the formed pipe; the mold completes bending forming, and can also be used as a clamp for welding, so that bending forming and welding are carried out at the same station, which is simple to operate and saves time and cost; the telescopic cylinder III can drive the aluminum welding gun to perform telescopic action, ensuring that the aluminum welding gun accurately welds the mounting buckle and the formed pipe, and ensuring the welding quality; the exhaust fan connected with the heat dissipation hole can improve the heat dissipation efficiency, ensuring rapid cooling and improving the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the sectional view of the connection between the shaped tube and the installation buckle of the present application;

[0021] Figure 2 is the perspective view of the shaping mold in the present application;

[0022] Figure 3 is the sectional view of the shaping mold in the present application;

[0023] Figure 4 is Figure 3 is the enlarged view of A in the present application;

[0024] Figure 5 is Figure 3 is the enlarged view of B in the present application.

[0025] In the drawings,

[0026] 1. shaped tube, 2. installation buckle, 3. machine frame, 4. lower mold block, 5. upper mold block, 6. sliding block, 20. installation hole, 40. lower mold cavity, 41. stop block, 42. guide groove, 43. sliding groove, 50. upper mold cavity, 51. limiting block, 52. guide block, 53. rubber sheet, 54. telescopic cylinder I, 60. clamping groove, 61. telescopic cylinder II, 62. displacement slot I, 63. displacement slot II, 64. aluminum welding gun, 65. telescopic cylinder III, 66. heat dissipation hole, 67. exhaust fan. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application or its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0028] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0029] The relative arrangement of parts, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. Also, it is to be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for the sake of convenience in description. Techniques, methods, and equipment known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the disclosure where appropriate. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limiting. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0030] In addition, it should be noted that the use of the terms "first", "second", and the like, to describe various components, is merely intended to differentiate one component from another, and does not connote any special meaning unless otherwise stated. Thus, the use of these terms is not intended to limit the scope of the present application.

[0031] Embodiment 1, as shown in a kind of aluminum alloy profile pipe, including forming pipe 1, the arc-shaped middle part of the forming pipe 1, the outer wall of the arc-shaped part of the forming pipe 1 is connected with installation buckle 2, installation hole 20 is arranged in the installation buckle 2. Figures 1-5

[0032] Wherein, the forming pipe is of aluminum alloy material, the middle part of the forming pipe is arc-shaped L-shaped pipe, and the installation buckle is connected to the outer wall of the forming pipe, the installation hole is arranged on the installation buckle, and the installation buckle is fixedly installed on the suspension of the automobile as the forming pipe, to ensure the installation stability of the forming pipe.

[0033] Embodiment 2, a kind of aluminum alloy profile pipe preparation method, steps are as follows:

[0034] S1. the core rod is inserted into the forming pipe 1;

[0035] S2. the forming pipe 1 is bent and formed using a forming die;

[0036] S3. the forming pipe 1 is welded with the installation buckle 2.

[0037] In step S2, the forming die is used for bending and forming, the forming die includes a rack 3, a lower module 4 and an upper module 5 vertically slidably connected with the lower module 4, the lower module 4 is provided with a lower die cavity 40, the upper module 5 is provided with an upper die cavity 50, the upper die cavity 50 and the lower die cavity 40 form a forming cavity, and the lower module 4 side is connected with a welding assembly for welding the installation buckle 2.

[0038] ​The lower die cavity 40 and the upper die cavity 50 are L-shaped, the lower end of the lower die cavity 40 is provided with a stop block 41, the top of the upper die cavity 50 is provided with a limiting block 51, the inner wall of the lower die cavity 40 is provided with a guide groove 42, and the outer side wall of the upper die 5 is provided with a guide block 52 which is in sliding connection with the guide groove 42.

[0039] The inner wall of the upper die cavity 50 is provided with a rubber sheet 53 which is in contact with the profiled pipe 1.

[0040] The top of the upper die cavity 50 is connected with a telescopic cylinder I 54 which is connected with the rack 3.

[0041] The side wall of the lower die 4 is provided with a sliding groove 43 which is in communication with the lower die cavity 40, the welding assembly comprises a sliding block 6 which is in sliding connection with the sliding groove 43, the sliding block 6 is provided with a clamping groove 60 for clamping the mounting buckle 2, and the side wall of the sliding block 6 is provided with a telescopic cylinder II 61 which is connected with the rack 3.

[0042] The sliding block 6 is provided with a horizontal arranged accommodation groove I 62 and a vertical arranged accommodation groove II 63, the accommodation groove I 62 and the accommodation groove II 63 are in communication with the clamping groove 60, and the accommodation groove I 62 and the accommodation groove II 63 are internally provided with an aluminum welding gun 64.

[0043] The accommodation groove I 62 and the accommodation groove II 63 are internally connected with a telescopic cylinder III 65, and the telescopic end of the telescopic cylinder III 65 is connected with the aluminum welding gun 64.

[0044] The side wall of the accommodation groove I 62 and the accommodation groove II 63 is provided with a heat dissipation hole 66, and the heat dissipation hole 66 is externally connected with an exhaust fan 67.

[0045] The working principle of the present application is as follows: Figures 1-5 As shown in the figure, the preparation of the aluminum alloy profiled pipe adopts a mold for bending forming, meanwhile, a welding assembly for welding the mounting buckle 2 is integrated on the mold, so that the welding of the mounting buckle 2 can be realized without transferring after the bending forming is completed, the bending forming of the profiled pipe 1 and the welding of the mounting buckle 2 are processed in the same station, the operation is simple, and the processing time is saved.

[0046] The forming die is provided with a rack 3, a lower die 4 and an upper die 5, wherein the upper die 5 is connected with a telescopic cylinder 1, the telescopic cylinder 1 is connected with the rack 3, and the telescopic cylinder 1 is used to drive the upper die 5 to move through telescopic action. An upper die cavity 50 is arranged below and on the side of the upper die 5, and a lower die cavity 40 is arranged on the top of the lower die 4, wherein the lower die cavity 40 and the upper die cavity 50 are spliced to form a forming cavity, which is used for bending forming of the pipe 1. The forming cavity is L-shaped, and the corner is arc-shaped, so that the visible surface of the pipe 1 is smooth after bending, and the upper die cavity 50 is provided with a limiting block 51, and the lower die cavity 40 is provided with a stop block 41, which limits the position of the pipe 1 in the forming cavity, so that the pipe 1 is stable in the forming cavity during forming, and the bending forming quality is guaranteed. Meanwhile, the guide block 52 and the guide groove 42 are used as the guide of the upper die 5 and the lower die 4, so that the bending forming quality is guaranteed.

[0047] The rubber sheet 53 is arranged on the inner wall of the upper die cavity 50, the rubber sheet 53 is a thin layer, and oil is sprayed on the rubber sheet 53 or the workpiece of the pipe 1 during bending forming, so that the pipe 1 is not scratched when contacting the pipe 1 during bending forming, the visible surface is smooth, and the bending forming quality of the pipe 1 is guaranteed.

[0048] Meanwhile, a sliding groove 43 is arranged on the side wall of the lower die 4, and the sliding groove 43 is communicated with the lower die cavity 40. A sliding block is arranged in the sliding groove 43, and a telescopic cylinder 2 is installed outside the sliding block and connected with the rack 3, and the telescopic cylinder 2 is used to drive the sliding block to slide. A clamping groove is arranged on the sliding block, which is used to fix and limit the installation buckle 2. Meanwhile, a first clearance groove 62 is arranged horizontally on the sliding block, and a second clearance groove 63 is arranged vertically, and the first clearance groove 62 and the second clearance groove 63 are communicated with the clamping groove, so that an aluminum welding gun 64 arranged in the first clearance groove 62 and the second clearance groove 63 can weld the installation buckle 2, and the welding position is accurate. The inner bottom surfaces of the first clearance groove 62 and the second clearance groove 63 are connected with a telescopic cylinder 3, the telescopic cylinder 3 is used to drive the aluminum welding gun 64 to perform telescopic action, so that the aluminum welding gun 64 can accurately weld the installation buckle 2 and the pipe 1, and the welding quality is guaranteed. The heat generated during welding can be discharged through the heat dissipation holes 66 arranged on the side walls of the first clearance groove 62 and the second clearance groove 63, so that the welding position of the installation buckle 2 and the pipe 1 can be quickly cooled, the welding quality is guaranteed, and the exhaust fan 67 connected with the heat dissipation holes 66 can improve the heat dissipation efficiency, so that the quick cooling is realized, and the welding quality is improved.

[0049] The main working steps of the present application are as follows: the mandrel is inserted into the forming tube 1, and the forming tube 1 is placed into the lower die cavity 40, and the bottom end surface of the forming tube 1 is in contact with the stop block 41, lubricating oil is sprayed to the forming tube 1 and the upper die cavity 50, the telescopic cylinder one 54 drives the upper die block 5 to move downward, and the forming tube 1 is bent and formed. After the forming is completed, the mounting buckle 2 is placed in the clamping groove of the sliding block, and the sliding block is pushed inward along the sliding groove 43 under the pushing action of the telescopic cylinder two 61, so that the mounting buckle 2 is in contact with the forming tube 1, at this time, the telescopic cylinder three 65 is extended to push the aluminum welding gun 64 outward, so that the aluminum welding gun 64 reaches the welding position, and the welding of the mounting buckle 2 and the forming tube 1 is carried out, at the same time of welding, the exhaust fan connected with the heat dissipation hole 66 rotates, the heat dissipation effect is improved, and the welding quality is guaranteed. After the welding is completed, the upper die block 5 moves upward under the action of the telescopic cylinder one 54, and the aluminum alloy profile tube which is bent and formed and has the mounting buckle 2 welded can be taken out from the lower die cavity 40, and the machining is completed.

[0050] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A method for preparing an aluminum alloy profile tube, characterized in that, It includes a molding tube (1), the middle part of which is arc-shaped, and the outer side wall of the arc-shaped part of the molding tube (1) is connected to a mounting buckle (2), and the mounting buckle (2) is provided with a mounting hole (20). The steps are as follows: S1. Insert a mandrel into the forming tube (1); S2. The forming tube (1) is bent and formed using a forming mold; S3. The formed tube (1) is welded to the mounting buckle (2); In steps S2 and S3, a forming mold is used to bend and shape the mounting buckle (2) and weld it. The forming mold includes a frame (3), a lower module (4), and an upper module (5) that can be slidably connected to the lower module (4) in the vertical direction. The upper module (5) and the lower module (4) are respectively connected to the frame (3). The lower module (4) is provided with a lower mold cavity (40), and the upper module (5) is provided with an upper mold cavity (50). The upper mold cavity (50) and the lower mold cavity (40) constitute a forming cavity. The lower module (4) is connected to a welding component for welding the mounting buckle (2) on its side. The lower module (4) is provided with a sliding groove (43) on its side wall. The sliding groove (43) is connected to the lower mold cavity (40). The welding component includes a sliding block (6). The sliding block (6) is slidably connected to the sliding groove (43). The sliding block (6) is provided with a slot (60) for engaging the mounting buckle (2). The sliding block (6) is provided with a telescopic cylinder on its side wall. (61) The telescopic cylinder 2 (61) is connected to the frame (3). The sliding block (6) is provided with a horizontally arranged relief groove 1 (62) and a vertically arranged relief groove 2 (63). Both relief groove 1 (62) and relief groove 2 (63) are connected to the slot (60). An aluminum welding gun (64) is installed in relief groove 1 (62) and relief groove 2 (63). The bottom surface of relief groove 1 (62) and relief groove 2 (63) is connected to telescopic cylinder 3 (65). The telescopic end of the telescopic cylinder three (65) is connected to the aluminum welding gun (64). After the forming is completed, the mounting buckle (2) is placed in the slot of the sliding block. Under the pushing action of the telescopic cylinder two (61), the sliding block is pushed inward along the sliding groove (43) so that the mounting buckle (2) contacts the forming tube (1). At this time, the telescopic cylinder three (65) extends and pushes the aluminum welding gun (64) outward so that the aluminum welding gun (64) reaches the welding position and performs welding of the mounting buckle (2) and the forming tube (1).

2. The method for preparing an aluminum alloy profile tube according to claim 1, characterized in that, The lower mold cavity (40) and the upper mold cavity (50) are L-shaped. A stop block (41) is provided at the lower end of the lower mold cavity (40), and a limit block (51) is provided at the top of the upper mold cavity (50). A guide groove (42) is provided on the inner wall of the lower mold cavity (40), and a guide block (52) is provided on the outer wall of the upper mold cavity (5). The guide block (52) is slidably connected to the guide groove (42).

3. The method for preparing an aluminum alloy profile tube according to claim 1, characterized in that, The inner wall of the upper mold cavity (50) is provided with a rubber sheet (53), which is in contact with the molding tube (1).

4. The method for preparing an aluminum alloy profile tube according to claim 1, characterized in that, The top of the upper module (5) is connected to a telescopic cylinder (54), which is connected to the frame (3).

5. The method for preparing an aluminum alloy profile tube according to claim 1, characterized in that, The sidewalls of the first (62) and the second (63) relief grooves are provided with heat dissipation holes (66), and an exhaust fan (67) is connected to the outside of the heat dissipation holes (66).

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