CN220406763U

CN220406763U - Die for bending and forming section bar

Info

Publication number: CN220406763U
Application number: CN202322115390.4U
Authority: CN
Inventors: 孙晓龙; 黄志斌; 孙小峰; 胡建华; 何雪婷; 陈保国; 赵立龙; 朱莲萍
Original assignee: Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-01-30
Anticipated expiration: 2033-08-08

Abstract

The utility model belongs to the technical field of forming dies and discloses a die for bending and forming a section bar, which comprises a plurality of die blocks, wherein each die block is provided with a through limiting hole, and the shape of the limiting hole is the same as the shape of the cross section of the section bar to be processed; the forming section of the section to be processed sequentially penetrates through the limiting holes of each die block, and the lengths of the die blocks are 80% -100% of the lengths of the forming sections. The die for bending the profile can limit the rib body of the profile to be processed in a full-size mode, so that the formed profile is higher in shape accuracy.

Description

Die for bending and forming section bar

Technical Field

The utility model relates to the technical field of forming dies, in particular to a die for bending and forming a section bar.

Background

The profile such as L profile, H profile or Y profile is easy to generate profile distortion or convex hull phenomenon in the area without the restriction of the mould when the profile is bent and formed.

At present, in order to prevent the uncontrolled distortion or convex hull phenomenon of section bar when bending, adopt the combination snakelike piece as the packing material generally, the installation and the dismantlement of the mould that adopts the combination snakelike piece are inconvenient, and when bending, local snakelike piece is extruded easily moreover, both can fish tail section bar surface, has lost the restriction effect to the section bar again, leads to the section bar to appear distortion or convex hull phenomenon easily, and the mould surface also adapts to section bar sectional structure and does the customization and handle, and the commonality is relatively poor.

Therefore, it is necessary to provide a mold for bending and shaping a profile to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides a die for bending and forming a section bar, which can limit the whole size of a rib body of the section bar to be processed, so that the formed section bar has higher shape precision.

To achieve the purpose, the utility model adopts the following technical scheme:

the die for bending and forming the profile comprises a plurality of die blocks, wherein each die block is provided with a through limit hole, the shape of each limit hole is identical to the cross section of the profile to be processed, the forming section of the profile to be processed sequentially penetrates through each limit hole of each die block, and the total thickness of the die blocks is 80% -100% of the length of the forming section.

As a preferred technical scheme of the die for bending and forming the profile, a gap is arranged between the peripheral wall of the limiting hole and the forming section.

As a preferred technical scheme of the die for bending and forming the profile, the gap is 0.1mm-0.3mm.

As a preferred technical scheme of the die for bending and forming the profile, a release agent is arranged between the peripheral wall of the limiting hole and the forming section.

As a preferable technical scheme of the die for bending and forming the profile, a transition structure is arranged between the peripheral wall of the limiting hole and the outer surface of the die block.

As a preferred technical scheme of the die for bending and forming the profile, the transition structure is a round angle.

As a preferred technical scheme of the die for bending and forming the profile, the shape of each die block is identical.

As a preferable technical scheme of the mold for bending and forming the profile, the thickness of the mold block is 5mm-50mm.

As a preferred solution of the mould for bending the profile, the mould blocks are made of mould steel.

As a preferable technical scheme of the die for bending and forming the profile, the limit holes are Y-shaped, H-shaped or U-shaped.

The utility model has the beneficial effects that:

the utility model provides a die for bending and forming a section bar, which comprises a plurality of die blocks, wherein each die block is provided with a limiting hole, the shape of each limiting hole is the same as the cross section shape of the section bar to be processed, so that each die block can wrap the section bar to be processed, and the shape of the section bar to be processed is comprehensively limited. Before the profile to be processed is bent and formed, the forming section of the profile to be processed sequentially penetrates through the limiting holes of each die block, the total thickness of the die blocks is 80% -100% of the length of the forming section of the profile to be processed, namely, the forming section of the profile to be processed can be limited through the die blocks, compared with the mode that the serpentine blocks are adopted to limit the profile to be processed in the prior art, the die blocks are limited reliably, the shape precision of the forming section of the profile to be processed after forming can be improved, the die blocks are simple to install, and the processing efficiency can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is an assembly drawing of a mold for bending a profile and a profile (the profile is not bent) according to an embodiment of the present utility model;

fig. 2 is an assembly drawing two of a mold for bending a profile and a profile (single curvature bending of a profile) provided in an embodiment of the present utility model;

fig. 3 is an assembly drawing III of a mold for profile bending and forming and a profile (profile double curvature bending) provided by an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a Y-shaped section provided by an embodiment of the present utility model;

FIG. 5 is a front view of a mold block for a Y-profile provided in an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a sunflower profile provided by an embodiment of the present utility model;

fig. 7 is a front view of a mold block suitable for use with a sunflower profile provided in an embodiment of the present utility model.

In the figure:

100. a mold block; 110. a limiting hole; 200. and (5) a section to be processed.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

At present, in order to prevent the uncontrolled distortion or convex hull phenomenon of section bar when bending, adopt the combination snakelike piece as the filler generally, the mould that adopts the combination snakelike piece is installed and is dismantled inconvenient, and when bending, local snakelike piece is extruded easily moreover, both can fish tail section bar surface, has lost the restriction effect to the section bar again, leads to the section bar to appear distortion or convex hull phenomenon easily, and the mould surface also adapts to section bar sectional structure and does the customization and handle, and the commonality is relatively poor.

Based on the above-mentioned problems, as shown in fig. 1-7, the present embodiment provides a mold for bending a profile, which can limit the whole size of the rib of the profile 200 to be processed, so that the shape accuracy of the formed profile is higher.

Specifically, the mold for bending and forming the profile includes a plurality of mold blocks 100, each mold block 100 is provided with a through limiting hole 110, the shape of the limiting hole 110 is the same as the cross-sectional shape of the profile 200 to be processed, the forming section of the profile 200 to be processed sequentially penetrates through the limiting holes 110 of each mold block 100, that is, the limiting holes 110 are used for limiting the shape of the forming section of the profile 200 to be processed, and the total thickness of the mold blocks 100 is 80% -100% of the length of the forming section, wherein the forming section of the profile 200 to be processed refers to the part of the profile 200 to be processed which is required to be bent and formed.

By setting the shape of the limiting hole 110 to be the same as the cross-sectional shape of the profile to be processed 200, each die block 100 can wrap the profile to be processed 200, so that the shape of the profile to be processed 200 is comprehensively limited.

Before the profile 200 to be processed is bent and formed, the forming section of the profile 200 to be processed sequentially penetrates through the limiting holes 110 of each die block 100, the total thickness of the die blocks 100 is 80% -100% of the length of the forming section of the profile 200 to be processed, the forming section of the profile 200 to be processed can be limited through the die blocks 100, compared with the mode that the serpentine blocks are adopted to limit the profile 200 to be processed in the prior art, the die blocks 100 can always wrap the profile 200 to be processed in the bending and forming process of the profile 200 to be processed, the limiting is reliable, the shape precision of the profile 200 to be processed after being formed is improved, the die blocks 100 are simple to install, and the processing efficiency can be improved.

It should be noted that, in the bending process, the forming section of the profile to be processed 200 is easy to twist and the position for generating the convex hull is located at the middle position of the forming section, and the end of the forming section is not easy to deform, so the total thickness of the plurality of mold blocks 100 can be smaller than the length of the forming section, and the shape accuracy of the forming section after bending and forming can be ensured. However, when the total thickness of the mold blocks 100 is smaller than the length of the forming section, the mold blocks 100 should be placed in the middle of the forming section, where the forming Duan Yifa is distorted and convex hull is created.

Alternatively, with continued reference to fig. 2 and 3, since the mold blocks 100 have continuous discretization, the mold blocks 100 may assist in single-curvature bending (as shown in fig. 2) and double-curvature bending (as shown in fig. 3) of the profile to be processed 200, and may also assist in complex-curvature bending of the profile to be processed 200, so that the universality is high.

Alternatively, as shown in fig. 4 to 7, the cross section of the profile to be processed 200 may be Y-shaped, sun-flower-shaped, etc., and accordingly, the limiting hole 110 is Y-shaped or sun-flower-shaped. Of course, the cross section of the profile to be processed 200 may also be H-shaped, U-shaped or other shapes, and correspondingly, the limiting hole 110 is H-shaped, U-shaped or other shapes matched with the profile to be processed 200.

In order to facilitate the disassembly of the mold block 100 after the bending of the profile to be processed 200, a gap is formed between the peripheral wall of the limiting hole 110 and the forming section of the profile to be processed 200, and the gap cannot be too large so as not to affect the limiting effect of the limiting hole 110, so that the profile to be processed 200 is distorted or convex hull is generated during the bending. The gap should not be too small to achieve rapid disassembly of the mold block 100. Alternatively, in the present embodiment, the gap is 0.1mm to 0.3mm, and may be, for example, 0.1mm, 0.2mm, or 0.3mm, etc., which is set according to actual needs. When the working condition is hot stretching, the gap should be properly enlarged in consideration of the difference in thermal expansion coefficients of the profile to be processed 200 and the mold block 100.

It should be noted that the clearance refers to the minimum distance between the peripheral wall of the limiting hole 110 and the forming section.

Preferably, a release agent is provided between the forming section of the profile to be processed 200 and the peripheral wall of the limiting aperture 110. In the thermal bending process, the mold block 100 can be prevented from being detached difficultly due to the height Wen Nianmo by providing the release agent, that is, the detachment difficulty of the mold block 100 can be reduced.

Further, since there may be hard contact between the forming section of the profile to be processed 200 and the edge of the limiting hole 110 of a certain die block 100 after the profile to be processed 200 is bent, the hard contact may scratch the surface of the forming section of the profile to be processed 200. Thus, a transition structure is provided between the peripheral wall of the limiting aperture 110 and the outer surface of the mould block 100, the transition structure serving to protect the surface of the profiled section of the profile 200 to be machined. Optionally, in this embodiment, the transition structure is rounded, that is, the outer edge of the peripheral wall of the limiting hole 110 is rounded along the thickness direction of the mold block 100, so as to remove burrs.

Preferably, the shape of each mold block 100 is the same, which is beneficial to simplifying the processing difficulty of the mold blocks 100 and improving the processing efficiency. When the profile 200 to be processed is subjected to single-curvature bending forming, the existing profile stretch bending equipment is used.

Further, the mold block 100 should have high rigidity to avoid deformation during bending of the profile 200 to be processed, for example, mold steel may be selected. Cold work die steel can be selected when the section bar 200 to be processed is cold bent; when the hot bending die steel is used for hot bending the section bar 200 to be processed, hot working die steel can be selected, and the hot bending die steel can be arranged according to actual needs.

Alternatively, the thickness of the mold block 100 may be 5mm-50mm, and may be, for example, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc., depending on the material of the mold block 100 and the desired rigidity requirements.

The mold for bending and forming the profile provided by the embodiment has high flexibility by arranging the plurality of mold blocks 100, so that the mold for bending and forming the profile is suitable for bending working conditions with complex curvature. When one of the mold blocks 100 is worn, only one mold block 100 needs to be replaced independently, so that the maintenance is convenient and the maintenance cost is low. In addition, the die for bending the profile can limit the whole size of the forming section of the profile 200 to be processed, reduce the risk of twisting or producing convex hulls after the profile 200 to be processed is bent and formed, and enable the shape precision of the formed profile to be higher.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The die for bending and forming the profile is characterized by comprising a plurality of die blocks (100), wherein each die block (100) is provided with a through limiting hole (110), the shape of each limiting hole (110) is identical to the cross section of the profile (200) to be processed, the forming section of the profile (200) to be processed sequentially penetrates through each limiting hole (110) of each die block (100), and the total thickness of the die blocks (100) is 80% -100% of the length of the forming section.

2. Mould for the bending of profiles according to claim 1, characterized in that the peripheral wall of the limiting aperture (110) has a gap with the forming section.

3. A mould for the bending of a profile according to claim 2, characterised in that the gap is 0.1-0.3 mm.

4. Mould for the curved shaping of profiles according to claim 1, characterized in that a release agent is provided between the peripheral wall of the limiting aperture (110) and the shaping segment.

5. Mould for the curved shaping of profiles according to claim 1, characterized in that a transition structure is provided between the peripheral wall of the limiting aperture (110) and the outer surface of the mould block (100).

6. The mold for bending of a profile according to claim 5, wherein the transition structure is rounded.

7. Mould for the curved shaping of profiles according to claim 1, characterized in that each of the mould blocks (100) has the same external shape.

8. Mould for the curved shaping of profiles according to any one of claims 1-7, characterized in that the thickness of the mould block (100) is 5-50 mm.

9. Mould for the curved shaping of profiles according to any one of claims 1-7, characterized in that the mould block (100) is made of mould steel.

10. The die for bending forming a profile according to any one of claims 1 to 7, wherein the limiting hole (110) is Y-shaped, H-shaped or U-shaped.