A profiled section bending apparatus

Abstract

The present application relates to the technical field of bending equipment, and discloses a special-shaped section bar bending equipment. The upper surface of the workbench is provided with a driving wheel assembly for pulling the section bar to be bent, and the side of the driving wheel assembly is provided with a check wheel assembly for supporting the section bar. The side of the check wheel assembly is provided with a swing assembly to realize the bending processing of the section bar. The swing assembly comprises a bottom plate fixed on the upper surface of the workbench, a trace block and a guide rail fixed on the upper surface of the bottom plate, and a bending slot head slidingly connected in the guide rail. The outer side surface of the bending slot head is connected with a hydraulic system to realize the reciprocating movement of the bending slot head on the guide rail. The present application solves the problem of high manufacturing cost and low work efficiency caused by the fact that when the section bar with special-shaped cross section and low rigidity is bent, the section bar needs to be taken out for marking after being bent once, and the bending position and radius and other parameters need to be determined before the section bar is bent again.

Description

Technical Field

[0001] This invention relates to the field of bending equipment technology, specifically to a bending equipment for irregularly shaped cross-section profiles. Background Technology

[0002] Bending equipment is a type of mechanical equipment used to process metal profiles. It bends the profiles into the required shapes, achieving customization of material shapes. Bending equipment plays an important role in shape customization, strength enhancement, improved processing efficiency, and improved processing accuracy. It can meet the needs of different industries and fields for material bending processing. It is commonly used in the manufacture of door and window frames, aerospace components, building structures, and rail transportation. Bending equipment typically consists of a feeding system, a positioning system, a bending system, and a control system. The feeding system feeds the profile into the bending area along a predetermined trajectory. When entering the bending area, the positioning system accurately positions the profile. The bending system performs the bending processing of the metal profile, while the control system controls the operation of the entire profile bending equipment.

[0003] When bending profiles in the rail vehicle industry, due to the large size and span of the profiles, their irregular cross-sections, and low rigidity, deformation and torsion are prone to occur during the bending process. Therefore, it is necessary to select appropriate bending dies, and the geometry of the dies must match the profiles to ensure that deformation or damage does not easily occur during the bending process. Furthermore, when performing S-bends, arc bends, and variable radius bends on the profiles, the profiles need to be removed from the bending equipment after the first bend, marked to determine the bending position and guide the bending operation, and then placed back on the bending equipment for the second bend. This results in high manufacturing costs and low work efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a bending device for irregularly shaped profiles, which solves the problems of high manufacturing costs, low work efficiency, and difficulty in efficiently completing processing requirements such as S-bends, arc pushes, and variable radii when bending profiles with irregular cross-sections and low rigidity.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a profile bending device with irregular cross-section, comprising a worktable, wherein a drive wheel assembly is provided on the upper surface of the worktable for pulling the profile to be bent, a buckling wheel assembly is provided on the side of the drive wheel assembly for supporting the profile, and a swing assembly is provided on the side of the buckling wheel assembly to realize the bending process of the profile; the swing assembly includes a base plate fixed on the upper surface of the worktable, a shaped block and a guide rail are fixed on the upper surface of the base plate, a bending groove head is slidably connected in the guide rail, the outer side of the bending groove head is connected to a hydraulic system to realize the reciprocating movement of the bending groove head on the guide rail, and two swing heads arranged symmetrically are provided inside the bending groove head, a first pin is provided at the bottom of the swing head, and a bearing is sleeved on the first pin, allowing the swing head to roll on the surface of the shaped block through the bearing; wherein, the speed of the swing head falling can be adjusted by changing the shape of the shaped block, and the verticality of the swing head can be adjusted by increasing or decreasing the height of the shaped block in the vertical direction.

[0008] Preferably, the upper surface of the swing head is connected to a bending die via a mounting pin for bending profiles, and a cover plate is provided on the top of the mounting pin for protection.

[0009] Preferably, the swing head is provided with a second pin inside, and the swing head can rotate around the second pin by less than or equal to 90 degrees. The second pin is located on the inner side where the two pins are installed.

[0010] Preferably, the trace block includes a rolling part and a flipping part. The side cross-section of the rolling part is rectangular and is used to accommodate the swing head after flipping. The flipping part is located at the middle position on the rolling part. The cross-section of the flipping part is symmetrical, and the connection between the upper surface of the flipping part and the inclined surface, and the connection between the bottom surface of the flipping part and the rolling part are provided with arc transition lines.

[0011] Preferably, the buckling wheel assembly includes a bearing plate with a C-shaped cross-section and an opening facing the drive wheel assembly. A buckling plate is fixed at the center of the upper surface of the bearing plate, and a first buckling wheel and a second buckling wheel are fixed inside the buckling plate for positioning the bent profile.

[0012] Preferably, the gap between the first and second abutting wheels and the passing profile is 0.5mm to 1.5mm, ensuring that the bent profile can be placed between the two abutting wheels, and that the cross-sections of the first and second abutting wheels match the outer cross-section of the bent profile.

[0013] Preferably, the drive wheel assembly includes a fixed plate, and the upper surface of the fixed plate is provided with two sets of guide wheels, each set having four guide wheels arranged in a straight line; one set of guide wheels is rotatably connected to a fixed position on the upper surface of the fixed plate, and the connection position of the other set of guide wheels to the fixed plate can be adjusted for traction of the bending profile.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a bending device for irregular cross-section profiles, which has the following features:

[0016] Beneficial effects:

[0017] When bending profiles with irregular cross-sections, the drive wheel assembly pulls the profile into the buckling wheel assembly, which then positions the profile to determine the bending position and parameters. According to the bending requirements, the swing assembly moves and rotates the swing head. The speed and perpendicularity of the swing head rotation can be adjusted by changing the shape and thickness of the trace block, enabling bidirectional bending of the profile. Various bending processes can be performed directly on the profile, and the bending die can be replaced by installing a pin, expanding the range of applications. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the workbench of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the drive wheel assembly of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the buckling wheels of the present invention;

[0022] Figure 4 This is a cross-sectional perspective view of the swing assembly of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Workbench; 2. Drive wheel assembly; 21. Fixed plate; 22. Guide wheel; 3. Buckling wheel assembly; 31. Bearing plate; 32. Buckling plate; 33. First buckling wheel; 34. Second buckling wheel; 4. Swing assembly; 41. Base plate; 42. Shape block; 421. Rolling part; 422. Tilting part; 43. Guide rail; 44. Bending groove head; 441. Swing head; 442. First pin; 443. Bearing; 444. Mounting pin; 445. Bending die; 446. Cover plate; 447. Second pin. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Figure 1-4 In one embodiment of the present invention, a profile bending device with irregular cross-section includes a worktable 1. A drive wheel assembly 2 is provided on the upper surface of the worktable 1 for pulling the profile to be bent. A retaining wheel assembly 3 is provided on the side of the drive wheel assembly 2 for supporting the profile. An oscillating assembly 4 for bending the profile is provided on the side of the retaining wheel assembly 3. The oscillating assembly 4 includes a base plate 41 fixed to the upper surface of the worktable 1. A forming block 42 and a guide rail 43 are fixed on the upper surface of the base plate 41. A bending groove head 44 is slidably connected inside the guide rail 43, and the outer side of the bending groove head 44 is flush with... The hydraulic system is connected to realize the reciprocating movement of the bending groove head 44 on the guide rail 43. The bending groove head 44 has two symmetrically arranged swing heads 441 inside. The bottom of the swing head 441 is provided with a first pin 442. The first pin 442 is sleeved with a bearing 443. The swing head 441 can roll on the surface of the trace block 42 through the bearing 443. The speed at which the swing head 441 falls can be adjusted by changing the shape of the trace block 42. The verticality of the swing head 441 can be adjusted by increasing or decreasing the height of the trace block 42.

[0027] In practical use, when it is necessary to bend profiles with irregular cross-sections, the profile is placed on the workbench 1, so that the front end of the profile enters the drive wheel assembly 2. The drive wheel assembly 2 pulls the profile forward, moving it into the buckling wheel assembly 3. The buckling wheel assembly 3 supports and limits the bending profile. After the front end of the profile enters the swing assembly 4, the bending groove head 44 is controlled to move on the guide rail 43 according to the bending requirements. The swing head 441 moves under the drive of the bending groove head 44. The bottom of the swing head 441... The front end rolls on the surface of the profile block 42 via a pin-sleeve bearing 443, reducing the friction when the swing head 441 moves. One of the swing heads 441 flips under the guidance of the profile block 42. The entire swing head 441 can enter the bending head groove after flipping. The speed of the swing head 441 flipping can be adjusted by changing the shape of the profile block 42. The verticality of the swing head 441 can be adjusted by adjusting the thickness of the profile block 42, preventing interference when bending the profile and facilitating the bending of the profile.

[0028] The upper surface of the swing head 441 is connected to a bending die 445 via a mounting pin 444 for bending the profile. A cover plate 446 is provided on the top of the mounting pin 444 for protecting the mounting pin 444.

[0029] When bending is performed using the swing head 441, one swing head 441 is flipped by the guide of the trace block 42, while the other swing head 441 moves to the edge of the upper surface of the trace block 42, so that the profile passing through the buckle wheel assembly 3 passes around the outer circle of the swing head 441 at the edge. At this time, the bent profile comes into contact with the bending die 445, and the bending process of the profile is realized. The swing head 441 is connected to the bending die 445 through the mounting pin 444, which makes it easy to change the bending die 445 according to the shape of the profile and expand the range of applications.

[0030] Specifically, the swing head 441 has a second pin 447 inside, and the swing head 441 can rotate less than or equal to 90 degrees around the second pin 447. The second pin 447 is located on the inner side where the two pins 444 are installed.

[0031] When the swing head 441 moves on the surface of the pattern block 42 under the drive of the bending groove head 44, the bottom of the swing head 441 moves along the surface of the pattern block 42 and flips. When flipping, the swing head 441 takes the second pin 447 as the rotation center. The second pin 447 is set inside the mounting pin 444 and is at the offset position of the center of gravity, which makes it easy for the swing head 441 to tilt by gravity when flipping, so that the movement and flipping process of the swing head 441 is smooth.

[0032] More specifically, the trace block 42 includes a rolling part 421 and a flipping part 422. The side cross-section of the rolling part 421 is rectangular and is used to accommodate the flipped swing head 441. The flipping part 422 is located at the middle position on the rolling part 421. The cross-section of the flipping part 422 is symmetrical, and the connection between the upper surface of the flipping part 422 and the inclined surface, and the connection between the bottom surface of the flipping part 422 and the rolling part 421 are provided with arc transition lines.

[0033] In actual use, when the swing head 441 moves on the surface of the profile block 42 under the drive of the bending groove head 44, both swing heads 441 are initially located on the upper surface of the flipping part 422. When the bending groove head 44 moves to the right, the bottom of the right swing head 441 moves along the inclined surface of the flipping part 422, causing the swing head 441 to flip. When the bottom of the right swing head 441 moves to the rolling part 421, the entire swing head 441 enters the bending groove head 44. The left swing head 441 moves to the edge of the flipping part 422 under the drive of the bending groove head 44 and comes into contact with the other swing head 441, so that the profile passes around the swing head 441 that is vertical to the bending groove head 44, thus achieving the rightward bending of the profile.

[0034] The buckling wheel assembly 3 includes a bearing plate 31 with a C-shaped cross-section and an opening facing the drive wheel assembly 2. A buckling plate 32 is fixed at the middle of the upper surface of the bearing plate 31. A first buckling wheel 33 and a second buckling wheel 34 are fixed inside the buckling plate 32. These are used to position the bent profile, determine the bending position and radius, and improve the bending effect.

[0035] When the profile is pulled into the buckling wheel assembly 3 by the drive wheel, the buckling plate 32 limits the upper part of the bent profile. A gap is left between the first buckling wheel 33 and the second buckling wheel 34 for the profile to pass through, which is used to position the inner and outer surfaces of the profile. The bearing plate 31 is set into a C-shape, which can increase the contact area between the bearing plate 31 and the drive wheel assembly 2 while ensuring the compactness of the machine structure, and improve the stability of the buckling wheel assembly 3.

[0036] Specifically, the gap between the first abutting wheel 33 and the second abutting wheel 34 and the passing profile is 0.5mm to 1.5mm, ensuring that the bent profile can be placed between the two abutting wheels, and the cross-sections of the first abutting wheel 33 and the second abutting wheel 34 match the outer cross-section of the bent profile.

[0037] When bending the profile, it is necessary to make the profile pass through the gap between the first abutting wheel 33 and the second abutting wheel 34, so that the gap between the profile and the abutting wheel is within 0.5mm to 1.5mm, so that the profile can pass through smoothly. The cross-section of the first abutting wheel 33 and the second abutting wheel 34 matches the outer cross-section of the bent profile, thereby increasing the contact area between the profile and the two abutting wheels and providing support and protection for the profile.

[0038] The drive wheel assembly 2 includes a fixed plate 21. The upper surface of the fixed plate 21 is provided with two sets of guide wheels 22. Each set of guide wheels 22 consists of four wheels arranged in a straight line. One set of guide wheels 22 is rotatably connected to a fixed position on the upper surface of the fixed plate 21, and the connection position of the other set of guide wheels 22 with the fixed plate 21 can be adjusted for traction of the bending profile.

[0039] In actual use, when the drive wheel assembly 2 is used to pull the profile, the profile enters between the two sets of guide wheels 22. The position of the movable guide wheels 22 is adjusted according to the thickness of the profile so that the profile can pass through the guide wheels 22 without relative slippage, thereby realizing the bending and forming of the profile by dragging the drive wheel assembly 2.

[0040] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bending device for irregularly shaped cross-section profiles, comprising a workbench (1), characterized in that: The workbench (1) has a drive wheel assembly (2) on its upper surface for pulling the profile to be bent. The drive wheel assembly (2) has a buckling wheel assembly (3) on its side for supporting the profile. The buckling wheel assembly (3) has a swing assembly (4) on its side for bending the profile. The swing assembly (4) includes a base plate (41) fixed on the upper surface of the workbench (1), a trace block (42) and a guide rail (43) fixed on the upper surface of the base plate (41), a bending groove head (44) slidably connected inside the guide rail (43), and the outer side of the bending groove head (44) connected to the hydraulic system to realize the reciprocating movement of the bending groove head (44) on the guide rail (43); The bending groove head (44) is provided with two symmetrically arranged swing heads (441). The bottom of the swing head (441) is provided with a first pin (442). The first pin (442) is fitted with a bearing (443). The swing head (441) can roll on the surface of the trace block (42) through the bearing (443). The speed at which the swing head (441) falls can be adjusted by changing the shape of the trace block (42), and the verticality of the swing head (441) can be adjusted by increasing or decreasing the height of the trace block (42) in the vertical direction. The upper surface of the swing head (441) is connected to a bending die (445) via a mounting pin (444) for bending the profile. A cover plate (446) is provided on the top of the mounting pin (444) for protecting the mounting pin (444). The trace block (42) includes a rolling part (421) and a flipping part (422). The side cross-section of the rolling part (421) is rectangular and is used to accommodate the flipped swing head (441). The flipping part (422) is located at the middle position on the rolling part (421). The cross-sectional shape of the flipping part (422) is symmetrical, and the connection between the upper surface of the flipping part (422) and the inclined surface, and the connection between the bottom surface of the flipping part (422) and the rolling part (421) are provided with arc transition lines.

2. The profile bending equipment with irregular cross-section according to claim 1, characterized in that: The swing head (441) is provided with a second pin (447) inside. The swing head (441) can rotate less than or equal to 90 degrees around the second pin (447). The second pin (447) is located on the inner side where the two pins (444) are installed.

3. The profile bending equipment with irregular cross-section according to claim 1, characterized in that: The buckling wheel assembly (3) includes a bearing plate (31), the cross-sectional shape of the bearing plate (31) is C-shaped and the opening faces the drive wheel assembly (2), a buckling plate (32) is fixed at the middle position of the upper surface of the bearing plate (31), and a first buckling wheel (33) and a second buckling wheel (34) are fixed inside the buckling plate (32) for positioning the bent profile.

4. The profile bending equipment with irregular cross-section according to claim 3, characterized in that: The gap between the first abutting wheel (33) and the second abutting wheel (34) and the passing profile is 0.5mm to 1.5mm, ensuring that the bent profile can be placed between the two abutting wheels, and the cross-section of the first abutting wheel (33) and the second abutting wheel (34) matches the outer cross-section of the bent profile.

5. The profile bending equipment with irregular cross-section according to claim 1, characterized in that: The drive wheel assembly (2) includes a fixed plate (21), and two sets of guide wheels (22) are provided on the upper surface of the fixed plate (21). Each set of guide wheels (22) consists of four wheels arranged in a straight line. One set of guide wheels (22) is rotatably connected to a fixed position on the upper surface of the fixed plate (21), and the connection position of the other set of guide wheels (22) with the fixed plate (21) can be adjusted for traction bending profiles.

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