Bending device for bridge production

Abstract

The utility model discloses a bending device for bridge production, relates to the technical field of bridge production, and aims to solve the technical problems that when a bending plate is reset after bending operation is finished at present, resilience is generated due to recovery of elastic deformation, the bending angle of the plate is deviated, and the bending size precision of the plate is directly affected. Comprising a workbench body composed of a bottom plate, a frame and bending platens, the bending platens are movably arranged on the bottom side of the top of the frame, the lower ends of the bending platens are fixedly connected with bending plates, and an extrusion assembly used for extruding plates is rotationally connected between the top of the bottom plate and the front side of the frame. By additionally arranging the extrusion assembly, the turned side edge can be extruded after a plate is bent, so that the resilience force generated at the corner folding position is relieved, the probability of corner folding angle resilience is reduced, the corner folding precision is improved, and the beneficial effects that the accuracy of the corner folding precision is improved, and the resilience probability is reduced are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable tray manufacturing technology, and more specifically, to a bending device for cable tray manufacturing. Background Technology

[0002] Cable trays are categorized into various structures such as trough-type, tray-type, ladder-type, and mesh-type cable trays, and consist of supports, brackets, and installation accessories. They can be installed independently or laid on various building structures and pipe rack supports, featuring simple structure, aesthetically pleasing appearance, flexible configuration, and convenient maintenance. Cable trays are typically manufactured by bending plates.

[0003] Currently, cable trays are typically manufactured by pressing sheet metal using a bending device. During bending, due to excessive bending angles, the plastic and elastic deformations of the metal material occur simultaneously. When the bent plate returns to its original position after bending, springback occurs due to the recovery of elastic deformation, causing a shift in the bending angle and directly affecting the dimensional accuracy of the bent sheet. Therefore, we propose a bending device for cable tray production. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a bending device for cable tray production. This device solves the technical problem that when the bending plate is reset after the bending operation, the springback caused by the recovery of elastic deformation leads to the deviation of the bending angle of the plate, which directly affects the bending dimensional accuracy of the plate.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a bending device for cable tray production, comprising a workbench body composed of a base plate, a frame and bending tables, wherein a plurality of bending tables are movably arranged on the top and bottom sides of the frame, and bending plates are fixedly connected to the lower ends of the plurality of bending tables; and an extrusion assembly for extruding plates is rotatably connected between the top of the base plate and the front side of the frame.

[0006] The extrusion assembly includes a plurality of second hydraulic cylinders, and an extrusion component is rotatably connected to the upper end of the plurality of second hydraulic cylinders. The extrusion component is rotatably connected to the side of the frame that is close to it.

[0007] The top of the base plate is fixedly provided with several bases corresponding to the positions of the second hydraulic cylinders, and a first limiting member is rotatably connected between the base and the second hydraulic cylinder.

[0008] This invention enables cable tray bending operations through the design of a base plate, frame, bending table, first hydraulic cylinder, and bending plate working together. During right-angle bending, the angle of the extrusion component can be adjusted by the operation of the extrusion assembly. The tilt angle can be automatically adjusted by the up-and-down rotating connection, thereby pressing against the side of the bent plate. This allows for further extrusion on one side of the bent plate, extending the contact time between the bending plate, the plate, and the lower groove of the bending table, increasing the stress time of the bent plate, reducing the springback force of the bent angle, and thus improving the accuracy of the bent angle and the quality of cable tray production.

[0009] Preferably, the extrusion component includes an L-shaped plate, a trapezoidal sheet metal part is fixedly provided on the top of the L-shaped plate, and the center of the sheet metal part is set as a hollow cavity. An arc-shaped extrusion strip is fixedly provided on the side of the sheet metal part near the bending plate, and the top of the sheet metal part is flush with the top of the bending table.

[0010] Preferably, the bottom of the L-shaped plate is fixedly provided with a second connecting plate that is connected to the upper end of the second hydraulic cylinder, and a second limiting member is rotatably connected between the second connecting plate and the second hydraulic cylinder.

[0011] Preferably, the two opposing side walls of the frame are provided with vertical grooves, and both ends of the bent plate are fixed with sliding plates that are slidably connected to the grooves.

[0012] Preferably, a fixing plate is fixedly provided on the front side of the frame, a fixing rod is connected between the two fixing plates, and a limiting sleeve that is sleeved with the fixing rod is fixedly provided on the rear side of the L-shaped plate.

[0013] Preferably, the second hydraulic cylinder is inclined between the base and the L-shaped plate, and the included angle between the second hydraulic cylinder and the base is an acute angle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model achieves cable tray bending operations through the design of a base plate, frame, bending table, first hydraulic cylinder, and bending plate working together. During the right-angle bending operation, the angle of the extrusion component can be adjusted by the operation of the extrusion assembly. The tilt angle can be automatically adjusted by the up-and-down rotation connection, thereby pressing against the side of the plate after bending. This allows for further extrusion on one side of the plate after the angle is bent, which prolongs the contact time between the bending plate, the plate, and the lower groove of the bending table, increases the stress time of the plate at the angle, reduces the springback force of the angle, and thus improves the accuracy of the angle and the quality of cable tray production.

[0016] 2. The hollow cavity sheet metal part design of this utility model can play a certain buffering role when the extrusion strip extrudes the side of the sheet. Combined with the arc-shaped extrusion strip structure, it can reduce the occurrence of extrusion creases when extruding the side of the sheet, and maintain the flatness of the side of the sheet. In this way, the bending accuracy is improved while reducing the impact on the quality of the sheet, and further improving the effect of structural fit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded structural diagram of the extrusion assembly of this utility model;

[0020] Figure 4 for Figure 1 Enlarged structural diagram of part A.

[0021] The following are the labels in the diagram: 1. Base plate; 101. Base; 2. Frame; 201. Slide groove; 202. Fixing plate; 203. Fixing rod; 3. Bending table; 4. First hydraulic cylinder; 5. Bending plate; 501. Slide plate; 6. Extrusion assembly; 601. Second hydraulic cylinder; 602. First limiting component; 603. Second limiting component; 7. Extrusion component; 701. L-shaped plate; 702. Second connecting plate; 703. Limiting sleeve; 704. Sheet metal part; 705. Extrusion strip. Detailed Implementation

[0022] like Figures 1 to 4 As shown, this utility model relates to a bending device for cable tray production, comprising a workbench body consisting of a base plate 1, a frame 2, and bending plates 3. Several bending plates 3 are movably arranged on the top and bottom sides of the frame 2, and bending plates 5 are fixedly connected to the lower ends of the bending plates 3. An extrusion assembly 6 for extruding plates is rotatably connected between the top of the base plate 1 and the front side of the frame 2. The cooperation of the bending plates 3, the first hydraulic cylinder 4, and the bending plates 5 can complete the bending operation of the plates. During the bending process, the support of the extrusion assembly 6 can extrude the side edges of the bent plates, thereby alleviating the springback recovery characteristics of the bending angle. This ensures that the bending angle remains fixed after the bending plates 5 are reset, improving the accuracy of the bending angle.

[0023] The extrusion assembly 6 includes several second hydraulic cylinders 601, and an extrusion component 7 is rotatably connected to the upper end of the several second hydraulic cylinders 601. The extrusion component 7 is rotatably connected to the side of the frame 2 that is close to it. Under the operation of the second hydraulic cylinders 601, the rotatable connection between the extrusion component 7 and the frame 2 can lift the side connected to the second hydraulic cylinder 601 upwards. By flipping it to the side, the extrusion component 7 is made to fit with the side of the plate after bending, so as to achieve the effect of extrusion and buffering.

[0024] The top of the base plate 1 is fixedly provided with several bases 101 corresponding to the positions of the second hydraulic cylinder 601. The bases 101 and the second hydraulic cylinder 601 are rotatably connected by a first limiting member 602. The rotatable connection between the second hydraulic cylinder 601 and the base 101 can automatically tilt when adjusting the angle of the extruder 7 to achieve the effect of cooperation and reduce the impact on the flipping operation of the extruder 7.

[0025] In an embodiment of this utility model, the extrusion member 7 includes an L-shaped plate 701. A trapezoidal sheet metal part 704 is fixedly provided on the top of the L-shaped plate 701, and the center of the sheet metal part 704 is set as a hollow cavity. An arc-shaped extrusion strip 705 is fixedly provided on the side of the sheet metal part 704 near the bending plate 5. The top of the sheet metal part 704 is flush with the top of the bending table 3. The shape design of the L-shaped plate 701 can reduce the weight on the flipping side and improve the smoothness of flipping. The sheet metal part 704 is fixed at a position close to the bending plate 5. After flipping, the position of the extrusion strip 705 can be close to the angle of the folded edge of the plate, and the side of the plate is not easily deformed during the extrusion process.

[0026] In an embodiment of this utility model, a second connecting plate 702 is fixedly provided at the bottom of the L-shaped plate 701 and is connected to the upper end of the second hydraulic cylinder 601. A second limiting member 603 is rotatably connected between the second connecting plate 702 and the second hydraulic cylinder 601. The rotatable connection between the two can automatically adjust the connection angle when the L-shaped plate 701 is flipped, which is not likely to affect the extension and retraction operation of the second hydraulic cylinder 601.

[0027] In the embodiments of this utility model, vertical grooves 201 are provided on both sides of the frame 2 facing each other, and sliding plates 501 that are slidably connected to the grooves 201 are fixed at both ends of the bent plate 5. The sliding plates 501 are set inside the grooves 201 and can maintain horizontal stability when moving longitudinally, and are not easy to deviate.

[0028] In an embodiment of this utility model, a fixing plate 202 is fixedly provided on the front side of the frame 2, and a fixing rod 203 is connected between the two fixing plates 202. A limiting sleeve 703 that is sleeved with the fixing rod 203 is fixedly provided on the rear side of the L-shaped plate 701. By fixing the limiting sleeve 703 on the fixing rod 203, one side of the L-shaped plate 701 can be limited, so that the L-shaped plate 701 can be flipped and its angle adjusted by the limiting of the fixing rod 203.

[0029] In an embodiment of this utility model, the second hydraulic cylinder 601 is inclinedly disposed between the base 101 and the L-shaped plate 701, and the included angle between the second hydraulic cylinder 601 and the base 101 is an acute angle; the inclined design makes it easy to automatically adjust to the corresponding inclined angle when the L-shaped plate 701 is extended and adjusted to change its flip angle.

[0030] Working Principle: This embodiment provides a bending device for cable tray production. In use, the sheet metal is first laid flat on the top of the bending table 3, aligning its folded edge with the lower groove on the top of the bending table 3. Then, by controlling the downward movement of the bending plate 5 via the bending table 3, the sheet metal is squeezed. The lower groove achieves the angled effect. After completing the right-angle angled operation, the extrusion assembly 6 is activated. The operation of the second hydraulic cylinder 601 lifts one side of the extruded part 7 upwards. Under the angled inclination, the extrusion strip 7 on the side of the sheet metal part 704 is... 05 is fitted to the side of the folded edge of the sheet metal and then pressed. This buffers the folded corner and reduces the probability of springback at the folded corner when the bent plate 5 is reset, thus maintaining the accuracy of the folded corner and improving the quality of the sheet metal as a cable tray. The sheet metal part 704 designed on the top of the L-shaped plate 701 cooperates with the extrusion strip 705 near the bottom of the folded corner of the sheet metal after flipping. This reduces the pressure on the side of the sheet metal during the extrusion process, reduces the occurrence of indentations, and maintains the flatness of the side while improving the accuracy of the folded corner.

[0031] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A bending device for cable tray production, characterized in that, The main body of the workbench consists of a base plate (1), a frame (2) and a bending table (3). Several bending tables (3) are movably provided on the top and bottom sides of the frame (2). Bending plates (5) are fixedly connected to the lower ends of the several bending tables (3). An extrusion assembly (6) for extruding plates is rotatably connected between the top of the base plate (1) and the front side of the frame (2). The extrusion assembly (6) includes a plurality of second hydraulic cylinders (601), and an extrusion member (7) is rotatably connected to the upper end of the plurality of second hydraulic cylinders (601). The extrusion member (7) is rotatably connected to the side of the frame (2) that is close to it. The top of the base plate (1) is fixedly provided with a plurality of bases (101) corresponding to the positions of the second hydraulic cylinder (601), and a first limiting member (602) is rotatably installed between the base (101) and the second hydraulic cylinder (601).

2. The bending device for cable tray production according to claim 1, characterized in that, The extrusion part (7) includes an L-shaped plate (701), the top of which is fixedly provided with a trapezoidal sheet metal part (704), and the center of the sheet metal part (704) is set as a hollow cavity. An arc-shaped extrusion strip (705) is fixedly provided on the side of the sheet metal part (704) near the bending plate (5), and the top of the sheet metal part (704) is flush with the top of the bending table (3).

3. The bending device for cable tray production according to claim 2, characterized in that, The bottom of the L-shaped plate (701) is fixedly provided with a second connecting plate (702) that is connected to the upper end of the second hydraulic cylinder (601), and a second limiting member (603) is rotatably connected between the second connecting plate (702) and the second hydraulic cylinder (601).

4. The bending device for cable tray production according to claim 1, characterized in that, The frame (2) has vertical grooves (201) on both sides facing each other, and the two ends of the bent plate (5) are fixed with sliding plates (501) that are slidably connected to the grooves (201).

5. The bending device for cable tray production according to claim 3, characterized in that, The front side of the frame (2) is fixedly provided with a fixing plate (202), and a fixing rod (203) is connected between the two fixing plates (202). The rear side of the L-shaped plate (701) is fixedly provided with a limiting sleeve (703) that is sleeved with the fixing rod (203).

6. The bending device for cable tray production according to claim 2, characterized in that, The second hydraulic cylinder (601) is inclined between the base (101) and the L-shaped plate (701), and the included angle between the second hydraulic cylinder (601) and the base (101) is an acute angle.

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