Steel beam stretch bending machine

Abstract

The invention discloses a steel beam stretch bender, which belongs to the technical field of steel beam bending equipment and comprises a bending die, the bending die comprises a frame and an arc-shaped plate mounted on the inner side of the frame, the frame is connected with the arc-shaped plate through a connecting rod, and a plurality of groups of connecting holes are formed in the frame. The curvature radiuses of arc lines formed by connecting lines of the center points of all the sets of connecting holes are different, connecting pipes corresponding to the connecting holes are fixedly connected to the inner wall of the arc-shaped plate, and an ejection mechanism located on one side of the arc-shaped plate is installed on the inner wall of the frame. Through arrangement of the frame and the arc-shaped plate, the frame and the arc-shaped plate are mutually connected through the connecting rods, disassembly and replacement are convenient, through arrangement of the multiple sets of connecting holes, the curvature radiuses of arc lines formed by connecting lines of the center points of all the sets of connecting holes are different, and therefore the arc-shaped plate is bent to enable the connecting pipe to be matched with the different sets of connecting holes; and then the connecting rods are used for connection, so that the bending dies with different curvature radiuses can be obtained.

Description

Technical Field

[0001] The invention relates to a steel beam bending device, in particular to a steel beam bending machine, and belongs to the technical field of steel beam bending equipment. Background Art

[0002] Steel beams are widely used in construction projects, such as crane beams and working platform beams in factories, floor beams in multi-story buildings, purlins in roof structures, etc., and sometimes need to be bent. The bending machine is the main equipment used for bending steel, aluminum profiles and other profiles.

[0003] Existing bending machines include turntable bending machines, arm bending machines, etc., among which arm bending machines generally include a platform, a stretching cylinder, a stretching chuck and a bending die. The bending die of the existing steel beam bending machine is generally a special tooling, which is not universal. It is necessary to design multiple sets of bending dies according to different bending curvature requirements to meet the use of different steel beams. The structure of the existing bending die includes a die body and an arc template, and the arc template is fixedly installed on one side surface of the die body by arc welding. When bending steel beams with different curvatures, the bending die needs to be disassembled and replaced, but the disassembly and assembly of the bending die is cumbersome, complicated, time-consuming and labor-intensive.

[0004] The present invention proposes a new solution to the above problems. Summary of the invention

[0005] The main purpose of the present invention is to solve the deficiencies of the prior art and provide a steel beam bending machine.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0007] A steel beam bending machine comprises a platform, a bending die is provided on the top of the platform, both sides of the platform are connected with a rotating arm, the two rotating arms are hydraulically driven and connected for relative rotation, an electric slide rail is provided on the top of the rotating arm, a slider is installed on the electric slide rail, a stretching cylinder is installed on the top of the slider, a stretching chuck is connected to the output end of the stretching cylinder, the bending die comprises a frame and an arc plate installed on the inner side of the frame, the frame and the arc plate are connected to each other by a connecting rod, a plurality of groups of connecting holes are provided on the frame, the curvature radius of the arc formed by the center point connecting line of each group of connecting holes is different, a connecting pipe corresponding to the connecting hole is fixedly connected to the inner wall of the arc plate, and an ejection mechanism located on one side of the arc plate is installed on the inner wall of the frame.

[0008] Preferably, the frame is a U-shaped frame, and the ejection mechanism comprises an ejection cylinder installed on the inner wall of the frame and a ejection head installed on the output end of the ejection cylinder.

[0009] Preferably, the ejector head comprises a mounting frame mounted on the output end of the ejection cylinder, and a rotating rod rotatably mounted on the inner side of the mounting frame.

[0010] Preferably, both the upper and lower surfaces of the installation frame are connected to limiting blocks, and a limiting groove is provided between two adjacent connection holes in each group of connection holes.

[0011] Preferably, each group of the connecting holes comprises a middle hole and a plurality of left-right symmetrical side holes, and the middle holes in the plurality of groups of the connecting holes are coaxial.

[0012] Preferably, a connecting shaft is connected between the middle hole and the connecting pipe.

[0013] Preferably, an insertion rod is connected between the side hole and the connecting pipe.

[0014] Preferably, the top of the insertion rod is connected to a flange, and the top of the flange is connected to a handle.

[0015] Preferably, a mounting platform is connected to the top of the platform, the frame is connected to the mounting platform via screws, screw holes are provided on the mounting platform, and through holes are provided on the frame.

[0016] Preferably, the arc-shaped plate is a flexible plate.

[0017] Beneficial technical effects of the present invention: According to the steel beam bending machine of the present invention, through the arrangement of the frame and the arc plate, the frame and the arc plate are connected to each other by connecting rods, which are convenient for disassembly and replacement. Through the arrangement of multiple groups of connecting holes and connecting pipes, the curvature radius of the arc line formed by the center point connecting line of each group of connecting holes is different, and covers the curvature radius frequently used for bending. Therefore, by bending the arc plate to make the connecting pipe cooperate with different groups of connecting holes, and then using connecting rods to connect, bending molds with different curvature radii can be obtained. Through the arrangement of the ejection mechanism, the connecting pipe can be made to coincide with the connecting hole, thereby facilitating the loading and unloading of the connecting rod, thereby changing the curvature radius of the bending mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment provided according to the present invention;

[0019] Figure 2 A diagram showing the overall structure of a preferred embodiment of the present invention;

[0020] Figure 3 A diagram showing a structure of a bending mold according to a preferred embodiment of the present invention;

[0021] Figure 4 A half-section view of a bending mold structure according to a preferred embodiment of the present invention;

[0022] Figure 5 A bottom view of a frame structure according to a preferred embodiment of the present invention;

[0023] Figure 6 The figure is a schematic diagram of an ejection mechanism according to a preferred embodiment of the present invention.

[0024] In the figure: 1. platform; 2. bending die; 3. rotating arm; 4. electric slide rail; 5. slider; 6. stretching cylinder; 7. stretching chuck; 8. frame; 9. arc plate; 10. connecting hole; 11. connecting pipe; 13. ejector mechanism; 14. ejector cylinder; 15. ejector head; 16. mounting frame; 17. rotating rod; 18. limiting block; 19. limiting groove; 20. middle hole; 21. side hole; 22. connecting shaft; 23. plug rod; 24. convex edge; 25. handle; 26. mounting table; 27. screw hole; 28. through hole. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0026] like Figure 1-Figure 6 As shown, the steel beam bending machine provided in this embodiment includes a platform 1, a bending die 2 is provided on the top of the platform 1, and rotating arms 3 are connected on both sides of the platform 1. The two rotating arms 3 are hydraulically driven and connected to each other for relative rotation. An electric slide rail 4 is provided on the top of the rotating arm 3, a slider 5 is installed on the electric slide rail 4, a stretching cylinder 6 is installed on the top of the slider 5, and a stretching chuck 7 is connected to the output end of the stretching cylinder 6. The bending die 2 includes a frame 8 and an arc plate 9 installed on the inner side of the frame 8. The frame 8 and the arc plate 9 are connected to each other through a connecting rod. A plurality of groups of connecting holes 10 are provided on the frame 8, and the curvature radius of the arc formed by the center point connecting line of each group of connecting holes 10 is different. A connecting pipe 11 corresponding to the connecting hole 10 is fixedly connected to the inner wall of the arc plate 9, and an ejection mechanism 13 located on one side of the arc plate 9 is installed on the inner wall of the frame 8. By setting the frame 8 and the arc plate 9, the frame 8 and the arc plate 9 are connected to each other by a connecting rod, which is convenient for disassembly and replacement. By setting multiple groups of connecting holes 10 and connecting tubes 11, the curvature radius of the arc formed by the center point connection line of each group of connecting holes 10 is different, and covers the curvature radius frequently used for bending. Therefore, by bending the arc plate 9 to make the connecting tube 11 cooperate with different groups of connecting holes 10, and then using connecting rods to connect, bending molds 2 with different curvature radii can be obtained. By setting the ejection mechanism 13, the connecting tube 11 can be made to coincide with the connecting hole 10, so as to facilitate the loading and unloading of the connecting rod, thereby changing the curvature radius of the bending mold 2.

[0027] In this embodiment, if Figure 2 Figure 3 , Figure 4 and Figure 5 As shown, the frame 8 is a U-shaped frame, and the ejection mechanism 13 includes an ejection cylinder 14 installed on the inner wall of the frame 8 and a head 15 installed at the output end of the ejection cylinder 14. The head 15 includes a mounting frame 16 installed at the output end of the ejection cylinder 14, and a rotating rod 17 rotatably installed inside the mounting frame 16. The upper and lower surfaces of the mounting frame 16 are connected to a limiting block 18, and a limiting groove 19 is provided between two adjacent connection holes 10 in each group of connection holes 10. The arc plate 9 can be bent by the arrangement of the ejection cylinder 14 and the head 15. When the arc plate 9 is bent, the arc plate 9 will be displaced with the head 15 by the arrangement of the mounting frame 16 and the rotating rod 17. The rotating rod 17 can reduce friction and improve bending efficiency; the setting of the limiting groove 19 and the limiting block 18 plays a guiding role.

[0028] In this embodiment, if Figure 3 , Figure 4 and Figure 5 As shown, each group of connecting holes 10 includes a middle hole 20 and a plurality of symmetrical side holes 21, and the middle holes 20 in the plurality of connecting holes 10 are coaxial, a connecting shaft 22 is connected between the middle hole 20 and the connecting tube 11, an insert rod 23 is connected between the side hole 21 and the connecting tube 11, a flange 24 is connected to the top of the insert rod 23, and a handle 25 is connected to the top of the flange 24. Through the setting of the middle holes 20, the middle holes 20 in the plurality of connecting holes 10 are coaxial, so when the curvature radius of the bending die 2 is changed, the position of the middle hole 20 remains unchanged, so the connection is made using the connecting shaft 22, and it does not need to be frequently disassembled, while the side holes 21 are connected using the insert rod 23, which is convenient for disassembly, so that the curvature radius can be quickly changed.

[0029] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the top of the platform 1 is connected with a mounting platform 26, the frame 8 is connected to the mounting platform 26 by screws, the mounting platform 26 is provided with a screw hole 27, the frame 8 is provided with a through hole 28, and the curved plate 9 is a flexible plate. The arrangement of the screw hole 27 and the through hole 28 facilitates the disassembly of the bending mold 2.

[0030] In this embodiment, if Figure 1-Figure 6 As shown, the working process of a steel beam bending machine provided in this embodiment is as follows:

[0031] Step 1: Pull out the insertion rod 23, and start the ejection mechanisms 13 located at equal distances on both sides of the middle hole 20 in sequence and simultaneously, the ejection cylinder 14 drives the ejector head 15 to extend, and the rotating rod 17 pushes the arc plate 9 to bend outward, so that the side hole 21 is aligned with the corresponding connecting pipe 11, and the insertion rod 23 is inserted;

[0032] Step 2: After all the plug rods 23 are installed, the steel beam is placed on one side of the curved plate 9 and bent.

[0033] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A steel beam bending machine, comprising a platform (1), a bending die (2) is provided on the top of the platform (1), rotating arms (3) are connected to both sides of the platform (1), the two rotating arms (3) are hydraulically driven and connected to rotate relative to each other, an electric slide rail (4) is provided on the top of the rotating arm (3), a slider (5) is installed on the electric slide rail (4), a stretching cylinder (6) is installed on the top of the slider (5), and a stretching chuck (7) is connected to the output end of the stretching cylinder (6), characterized in that: The bending die (2) comprises a frame (8) and an arc-shaped plate (9) mounted on the inner side of the frame (8); the frame (8) and the arc-shaped plate (9) are connected to each other via a connecting rod; a plurality of groups of connecting holes (10) are provided on the frame (8); the curvature radius of the arc formed by the central point connecting line of each group of the connecting holes (10) is different; a connecting pipe (11) corresponding to the connecting hole (10) is fixedly connected to the inner wall of the arc-shaped plate (9); and an ejection mechanism (13) located on one side of the arc-shaped plate (9) is mounted on the inner wall of the frame (8).

2. A steel beam bending machine as claimed in claim 1, characterized in that: The frame (8) is a U-shaped frame, and the ejection mechanism (13) comprises an ejection cylinder (14) mounted on the inner wall of the frame (8) and a ejection head (15) mounted on the output end of the ejection cylinder (14).

3. A steel beam bending machine as claimed in claim 2, characterized in that: The ejector head (15) comprises a mounting frame (16) mounted on the output end of the ejector oil cylinder (14), and a rotating rod (17) rotatably mounted inside the mounting frame (16).

4. A steel beam bending machine as claimed in claim 3, characterized in that: The upper and lower surfaces of the installation frame (16) are both connected to limiting blocks (18), and a limiting groove (19) is provided between two adjacent connecting holes (10) in each group of connecting holes (10).

5. A steel beam bending machine as claimed in claim 1, characterized in that: Each group of the connecting holes (10) comprises a middle hole (20) and a plurality of left-right symmetrical side holes (21), and the middle holes (20) in the plurality of groups of the connecting holes (10) are coaxial.

6. A steel beam bending machine as claimed in claim 5, characterized in that: A connecting shaft (22) is connected between the middle hole (20) and the connecting pipe (11).

7. A steel beam bending machine as claimed in claim 5, characterized in that: An insertion rod (23) is connected between the side hole (21) and the connecting pipe (11).

8. A steel beam bending machine as claimed in claim 7, characterized in that: The top of the insertion rod (23) is connected to a convex edge (24), and the top of the convex edge (24) is connected to a handle (25).

9. A steel beam bending machine as claimed in claim 1, characterized in that: The top of the platform (1) is connected to a mounting platform (26); the frame (8) is connected to the mounting platform (26) via screws; a screw hole (27) is provided on the mounting platform (26); and a through hole (28) is provided on the frame (8).

10. The steel beam bending machine according to claim 1, characterized in that: The arc-shaped plate (9) is a flexible plate.

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