Special die for solving roll bending and wrinkling of special-shaped dangling edge aluminum profile

Abstract

A special die for solving roll bending and wrinkling of a special-shaped dangling edge aluminum profile comprises an upper die and two lower dies, the upper die comprises upper die edges on the two sides and a plurality of combined dies clamped in the middle, and an upper die shaft penetrates through the upper die edges and the middles of the combined dies; the lower die comprises lower die edges on the two sides and a plurality of combined dies clamped in the middle, and a lower die shaft penetrates through the lower die edges and the middles of the combined dies. A filling block is filled in an inner cavity of the half-opening section of the aluminum profile. According to the utility model, the effect of supporting the inner cavity of the half-opening section of the aluminum profile is realized by filling the filling blocks on the half-opening section of the profile, so that the half-opening section does not have the defects of collapse, wrinkling, waves and the like in the roll bending process.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material processing, in particular to a special die for solving the problem of roller bending and wrinkling of special-shaped suspended edge aluminum profiles. Background Art

[0002] Aluminum profiles can be used in various aspects of industry due to their superior mechanical properties, excellent formability, light weight and excellent corrosion resistance. They are widely used in the transportation industry, including the automobile manufacturing industry, rail transportation industry, equipment and machinery manufacturing industry, durable consumer goods industry, etc.

[0003] In the fields of automobile manufacturing and rail transit manufacturing, the originally straight aluminum profiles need to be bent into various arcs or angles to meet the streamlined curves or beautiful appearance of the vehicle. In the process of bending aluminum profiles, there are many forming methods such as press bending, bending and rolling. Since automotive aluminum is long and has a large cross-section, rolling is often used to bend the profiles. Aluminum profile rolling mainly uses a rolling machine. The motor of the rolling machine drives several overlapping rollers to rotate. The aluminum profile gradually passes through the middle of the roller from the head end and is rolled and pressed by the overlapping rollers. The aluminum profile is gradually rolled from the beginning to the end into a certain arc. By controlling the position change of the roller, the curvature of the aluminum profile can be adjusted, and finally the required arc-shaped aluminum profile product is achieved.

[0004] In the roll bending process of aluminum profiles with different profile cross-sections, the roll bending of aluminum profiles with special-shaped overhangs has always been a difficult point in production: due to the special-shaped appearance, the roll bending die needs to be processed into a shape corresponding to its appearance, and the processing process is cumbersome and costly; secondly, if there is a semi-enclosed structure in the profile cross-section, such as a C-shaped or slot-shaped opening, this type of opening has upper and lower overhangs. Since the overhang structure lacks the general support of a closed-loop profile during the roll bending force process, after roll bending, the shape of the overhang will undergo large uneven deformation, and the edge will wrinkle and wave, seriously affecting the appearance quality of the aluminum profile. Utility Model Content

[0005] The utility model aims to provide a special die for solving the wrinkling problem of roll bending of special-shaped suspended edge aluminum profiles. By filling a filling block on the semi-open cross-section of the profile, the effect of supporting the inner cavity of the semi-open cross-section of the aluminum profile is achieved, so that during the roll bending process, the semi-open cross-section will not produce defects such as collapse, wrinkling and waves.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A special mold for solving the wrinkling of special-shaped hanging edge aluminum profile roll bending, the mold includes an upper mold and two lower molds, the upper mold includes upper mold edges on both sides, several combined molds clamped in the middle, and the upper mold mold axis passes through the middle of the upper mold edge and the combined mold; the lower mold includes lower mold edges on both sides, several combined molds clamped in the middle, and the lower mold mold axis passes through the middle of the lower mold edge and the combined mold; the inner cavity of the semi-open cross section of the aluminum profile is filled with a filling block. The filling block can be freely filled into the semi-open mold cavity, located in the middle of the upper and lower hanging edges, and is easy to disassemble after the roll bending is completed.

[0008] The length of the filling block is equal to that of the aluminum profile. During the roll bending process, the long strip filling block.

[0009] The material of the filling block is 6061 aluminum alloy. After calculating the mechanical properties of the material, the applicant found that the filling block made of 6061 material can ensure that the filling block has a good supporting effect during the bending process, but will not cause insufficient bending at this position due to excessive rigidity, thereby affecting the smoothness of the arc surface.

[0010] The filling block can be a solid aluminum block or a hollow aluminum profile. If the size of the semi-open cavity is large, a thicker hollow aluminum profile can be used instead of a solid aluminum block as the filling block, which also has a supporting effect, is light in weight, and is easy to operate.

[0011] The combined molds in the upper mold include an upper mold combined mold A, an upper mold combined mold B and an upper mold combined mold C; wherein a groove is arranged on the contact surface between the upper mold combined mold B and the upper mold combined mold A, and the shape thereof matches the convex rib of the cross section of the aluminum profile; a groove is arranged on the circumferential surface of the upper mold combined mold C, and the shape thereof matches the protrusion of the cross section of the aluminum profile.

[0012] The combined molds in the lower mold include a lower mold combined mold A, a lower mold combined mold B and a lower mold combined mold C; grooves are arranged on the circumferential surfaces of the lower mold combined mold A, the lower mold combined mold B and the lower mold combined mold C, and the shapes match the protrusions of the aluminum profile section.

[0013] Advantages of utility models

[0014] 1. The roll bending combination die of the utility model is suitable for profiles with special shapes and semi-open structures having hanging edges. The cross section of the obtained roll-bent profile at the hanging edge will not produce defects such as collapse, wrinkles and waves. The roll bending qualification rate is high, which effectively reduces the probability of profile scrapping.

[0015] 2. The detachable filling block of the utility model can be reused, thereby reducing the cost of roll bending.

[0016] 3. The utility model is easy to operate, the filling blocks can be produced quickly in large quantities, and the operators can start operation without long-term training. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view schematic diagram of the working state of the roll bending die;

[0018] Figure 2 It is a schematic diagram of the main view of the upper die assembly state;

[0019] Figure 3 This is a schematic diagram of the upper die disassembly state;

[0020] Figure 4 for Figure 3 Schematic diagram of the structure of the middle AA section;

[0021] Figure 5 This is a schematic diagram of the main view of the lower die assembly state;

[0022] Figure 6 This is a schematic diagram of the disassembled state of the lower die;

[0023] Figure 7 for Figure 6 Schematic diagram of the structure of the middle BB section;

[0024] The names of the components in the accompanying drawings are: 1-upper mold; 11-upper mold edge; 12-upper mold combination mold A; 13-upper mold combination mold B; 14-upper mold combination mold C; 15-upper mold shaft; 2-lower mold; 21-lower mold edge; 22-lower mold combination mold A; 23-lower mold combination mold B; 24-lower mold combination mold C; 25-lower mold shaft; 3-aluminum profile; 4-filling block. DETAILED DESCRIPTION Example 1

[0025] A special die for solving the wrinkling of special-shaped suspended edge aluminum profiles during roll bending, the die comprises an upper die 1 and two lower dies 2, the upper die 1 comprises upper die edges 11 on both sides, three combined dies clamped in the middle, and an upper die die axis 15 passes through the upper die edge 11 and the middle of the combined dies; the lower die 2 comprises lower die edges 21 on both sides, a plurality of combined dies clamped in the middle, and a lower die die axis 25 passes through the lower die edge 21 and the middle of the combined dies; the inner cavity of the semi-open cross section of the aluminum profile is filled with a filling block 4.

[0026] The length of the filling block 4 is equal to that of the aluminum profile.

[0027] The material of the filling block 4 is 6061 aluminum alloy.

[0028] The filling block 4 may be a solid aluminum block or a hollow aluminum profile.

[0029] The combined molds in the upper mold 1 include an upper mold combined mold A12, an upper mold combined mold B13 and an upper mold combined mold C14; wherein a groove is arranged on the contact surface between the upper mold combined mold B13 and the upper mold combined mold A12, and the shape thereof matches the convex rib of the cross section of the aluminum profile 3; a groove is arranged on the circumferential surface of the upper mold combined mold C14, and the shape thereof matches the protrusion of the cross section of the aluminum profile 3.

[0030] The combined molds in the lower mold 2 include a lower mold combined mold A22, a lower mold combined mold B23 and a lower mold combined mold C24; grooves are arranged on the circumferential surfaces of the lower mold combined mold A22, the lower mold combined mold B23 and the lower mold combined mold C24, and the shapes thereof match the protrusions of the cross section of the aluminum profile 3.

Claims

1. A special die for solving the problem of wrinkling of special-shaped aluminum profiles with hanging edges, characterized in that: The mold comprises an upper mold (1) and two lower molds (2), the upper mold (1) comprising upper mold edges (11) on both sides, a plurality of combined molds clamped in the middle, and an upper mold mold shaft (15) passing through the middle of the upper mold edge (11) and the combined molds; the lower mold (2) comprises lower mold edges (21) on both sides, a plurality of combined molds clamped in the middle, and a lower mold mold shaft (25) passing through the middle of the lower mold edge (21) and the combined molds; and the inner cavity of the semi-open cross-section of the aluminum profile is filled with a filling block (4).

2. According to claim 1, the special die for solving the wrinkling of the roll bending of the special-shaped overhanging aluminum profile is characterized in that: The length of the filling block (4) is equal to that of the aluminum profile (3).

3. According to claim 1, the special die for solving the wrinkling of special-shaped overhanging aluminum profile roll bending is characterized in that: The material of the filling block (4) is 6061 aluminum alloy.

4. According to claim 1, the special die for solving the problem of wrinkling of special-shaped overhanging aluminum profiles by roller bending is characterized in that: The filling block (4) may be a solid aluminum block or a hollow aluminum profile.

5. According to claim 1, the special die for solving the wrinkling of special-shaped overhanging aluminum profile roll bending is characterized in that: The combined molds in the upper mold (1) include an upper mold combined mold A (12), an upper mold combined mold B (13) and an upper mold combined mold C (14); wherein a groove is provided on the contact surface between the upper mold combined mold B (13) and the upper mold combined mold A (12), the shape of which matches the convex rib of the cross section of the aluminum profile (3); and a groove is provided on the circumferential surface of the upper mold combined mold C (14), the shape of which matches the protrusion of the cross section of the aluminum profile (3).

6. The special die for solving the wrinkling of special-shaped aluminum profiles with hanging edges according to claim 1 is characterized in that: The combined molds in the lower mold (2) include a lower mold combined mold A (22), a lower mold combined mold B (23) and a lower mold combined mold C (24); grooves are arranged on the circumferential surfaces of the lower mold combined mold A (22), the lower mold combined mold B (23) and the lower mold combined mold C (24), and the shapes thereof match the protrusions on the cross section of the aluminum profile (3).

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