Metal fitting bending device

Abstract

The utility model belongs to the technical field of metal fitting processing, and particularly relates to a metal fitting bending device which comprises a bending machine and an iron round pipe workpiece, a first hydraulic cylinder is installed on the top of the inner side of the bending machine, and a stroke rod of the first hydraulic cylinder is vertically and downwards fixed with a downward pressing piece. Two second hydraulic cylinders are fixed to the left end and the right end of the inner wall of the bending machine correspondingly, rotating columns are rotationally connected to stroke rods at the ends, close to each other, of the second hydraulic cylinders at the left end and the right end correspondingly, a sliding ring is rotationally connected between the two rotating columns, and a connecting structure is installed in the sliding ring and used for being connected with an iron circular pipe workpiece. The connecting structure comprises a clamp pipe connected to the inner wall of the sliding ring in a sliding mode, and the iron circular pipe workpiece is installed in the clamp pipe. According to the utility model, the stress between the iron circular tube workpiece and the clamp can be reduced, so that the deformation of the pressed edge between the circular tube and the clamp can be effectively avoided, and the processing quality and efficiency of the metal circular tube can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal fitting processing technical field, and specifically relates to metal fitting bending device. BACKGROUND

[0002] In the field of metal processing, the bending processing of metal fittings is one of the common processes, especially in the manufacture of metal iron round pipes, the application of the bending process is particularly wide, and the bending processing can make the metal material bend according to the predetermined shape and angle to meet the needs of various structures and designs, however, in the bending process, the deformation often occurs at the compressed edge between the round pipe and the clamp, and this deformation not only affects the appearance quality of the metal round pipe, but also can reduce its structural strength and service life.

[0003] The existing metal round pipe bending device usually includes a bending machine, a clamp and a die, etc., in the bending process, the round pipe is fixed in the clamp, and then the round pipe is bent by the bending machine through the application of pressure, however, due to the fact that the edge part of the round pipe in contact with the clamp cannot uniformly disperse the pressure when stressed, the material of this part is subjected to local excessive stress, thereby causing deformation, and this deformation problem is particularly prominent in the processing of thin-walled round pipes, because the rigidity of the thin-walled material is low, and it is more prone to deformation when stressed.

[0004] For example, some traditional bending clamps do not consider the stress distribution problem of the compressed edge of the round pipe, and only fix the round pipe through a simple clamping method, which can easily cause obvious indentation or depression on the edge of the round pipe when bending, in addition, some designs attempt to disperse the pressure by increasing the contact area of the clamp, but due to the shape and structure limitation of the clamp, it is often difficult to effectively solve the edge deformation problem, or the edge quality is improved at the expense of processing efficiency.

[0005] Therefore, in view of the edge deformation problem of the metal round pipe in the prior art, the utility model provides an improved metal fitting bending device. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing metal fitting bending device, can pass through the stress between iron round pipe workpiece and clamp is reduced, effectively avoids the deformation of the compressed edge between the round pipe and the clamp, thereby improving the processing quality and efficiency of the metal round pipe.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] The metal fitting bending device comprises a bending machine and an iron round pipe workpiece, a first hydraulic cylinder is installed on the top of the inner side of the bending machine, and a lower pressing piece is fixed vertically downward on the stroke rod of the first hydraulic cylinder.

[0009] Two second hydraulic cylinders are fixed to the left and right ends of the inner wall of the bending machine, a rotating column is rotatably connected to the stroke rod of the end of the second hydraulic cylinders on the left and right sides, a sliding ring is rotatably connected between the two rotating columns, a connecting structure is installed in the sliding ring, and the connecting structure is used for connecting the ferrous pipe workpiece.

[0010] The connecting structure comprises a clamp pipe slidably connected to the inner wall of the sliding ring, the ferrous pipe workpiece is installed in the inner part of the clamp pipe, end pipes are arranged at the two ends of the clamp pipe, a sliding groove is arranged at the middle part of the clamp pipe between the two end pipes, and the sliding ring is slidably arranged outside the sliding groove.

[0011] A plurality of electromagnets are installed in the inner part of the end pipe.

[0012] A torsion spring is installed between the rotating column and the sliding ring.

[0013] A plurality of first mounting pieces are fixed to the outer side of the two end pipes, a plurality of second mounting pieces are fixed to the outer side of the sliding ring and correspond to the first mounting pieces in number and position, and springs are installed between the second mounting pieces and the first mounting pieces on the two sides of the second mounting pieces.

[0014] Limiting rods are fixed in the inner part of the two first mounting pieces, the limiting rods are slidably connected with the second mounting pieces, and the limiting rods are arranged in the inner part of the springs.

[0015] A limiting strip is arranged outside the sliding groove, and the sliding groove and the sliding ring are slidably connected through the limiting strip.

[0016] The technical effects achieved by the bending machine are as follows.

[0017] The bending machine can effectively avoid the deformation of the edge of the pipe and the clamp under pressure by reducing the stress between the ferrous pipe workpiece and the clamp, thereby improving the processing quality and efficiency of the metal pipe. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the utility model;

[0019] Figure 2 is a structural schematic view of the limiting rod, the second hydraulic cylinder and the clamp pipe in the utility model;

[0020] Figure 3 is a structural schematic view of the electromagnet, the rotating column and the second hydraulic cylinder in the utility model;

[0021] Figure 4 is a structural schematic view of the sliding groove, the sliding ring and the limiting strip in the utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Bending machine; 2. First hydraulic cylinder; 3. Pressing part; 4. Iron round tube workpiece; 5. Fixture tube; 6. Slide groove; 7. Electromagnet; 8. Rotating column; 9. Sliding ring; 10. Torsion spring; 11. Second hydraulic cylinder; 12. First mounting plate; 13. End tube; 14. Second mounting plate; 15. Spring; 16. Limiting rod; 17. Limiting strip. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figures 1-4 As shown, the metal fitting bending device includes a bending machine 1 and an iron round tube workpiece 4. The iron round tube workpiece 4 is set inside the bending machine 1. The bending machine 1 may have side walls on both sides. If there are side walls, holes are provided on the side walls to facilitate the installation of the iron round tube workpiece 4. The bending machine 1 may also not have side walls on both sides. A first hydraulic cylinder 2 is installed on the top of the inner side of the bending machine 1. The stroke rod of the first hydraulic cylinder 2 is vertically fixed with a pressing member 3.

[0026] Two second hydraulic cylinders 11 are fixed at both ends of the inner wall of the bending machine 1. Rotating columns 8 are rotatably connected to the stroke rods of the second hydraulic cylinders 11 at their closest points. Sliding rings 9 are rotatably connected between the two rotating columns 8. (Refer to the attached diagram.) Figure 3 A torsion spring 10 is installed between the rotating column 8 and the sliding ring 9. The torsion spring 10 allows the sliding ring 9 and the clamp tube 5 to be pushed down by the pressing member 3. The pressing member 3 moves upward, and the sliding ring 9 can be reset to its original horizontal state via the torsion spring 10. Further details can be found in the appendix. Figure 4 A limiting strip 17 is provided on the outer side of the slide groove 6, and the slide groove 6 and the sliding ring 9 are slidably connected through the limiting strip 17. With this setting, when the sliding ring 9 slides on the outer side of the slide groove 6, it can only slide and cannot rotate, thereby ensuring the success rate of the pressing part 3 moving the iron round tube workpiece 4. A connecting structure is installed inside the sliding ring 9, which is used to connect the iron round tube workpiece 4.

[0027] When the second hydraulic cylinder 11 is driven, it can drive the sliding ring 9 to move, thereby moving the sliding ring 9 to a suitable position, which facilitates the installation of the iron round tube workpiece 4 and subsequent bending processing.

[0028] See attached documentFigure 3 The connecting structure comprises a clamp pipe 5 slidingly connected to the inner wall of the sliding ring 9, and the ferrous pipe workpiece 4 is installed inside the clamp pipe 5. When the ferrous pipe workpiece 4 is inserted into the clamp pipe 5, the first hydraulic cylinder 2 can be driven to move the lower pressing piece 3 downward until the lower pressing piece 3 contacts the ferrous pipe workpiece 4 and then presses the lower pressing piece 3, thereby bending the ferrous pipe workpiece 4;

[0029] Both ends of the clamp pipe 5 are provided with end pipes 13, and the middle part of the clamp pipe 5 between the two end pipes 13 is provided with a sliding groove 6, and the sliding ring 9 slides outside the sliding groove 6. The inside of the end pipe 13 is provided with a plurality of electromagnets 7. Referring to the drawings Figure 3 The outer side of the two end pipes 13 is fixed with a plurality of first mounting pieces 12, and the outer side of the sliding ring 9 is fixed with a plurality of second mounting pieces 14 corresponding to the first mounting pieces 12 in number and position. The second mounting piece 14 and the first mounting piece 12 on both sides thereof are both provided with a spring 15. Through this arrangement, when the clamp pipe 5 is pressed, it will slide in the sliding ring 9. After the lower pressing piece 3 moves up, the clamp pipe 5 loses the pressing force. At this time, the spring 15 can drive the clamp pipe 5 to reset to the original state through the arrangement of the spring 15. Further, the inside of the two first mounting pieces 12 is fixed with a limiting rod 16, and the limiting rod 16 is slidingly connected with the second mounting piece 14, and the limiting rod 16 is arranged in the spring 15. Through the arrangement of the limiting rod 16, the limiting rod 16 can reduce the occurrence of the spring 15 tilting outward when the spring 15 is pressed.

[0030] When the lower pressing piece 3 presses the ferrous pipe workpiece 4, it can drive the clamp pipe 5 to rotate towards the position close to the lower pressing of the lower pressing piece 3. When the lower pressing piece 3 presses the ferrous pipe workpiece 4, the electromagnet 7 can be driven to magnetically attract the ferrous pipe workpiece 4, so that the plurality of electromagnets 7 attract the ferrous pipe workpiece 4 from multiple directions, reducing the pressure of the ferrous pipe workpiece 4 on the inner wall of the end pipe 13.

[0031] When the ferrous pipe workpiece 4 is pressed, it will cause compression with the inner wall of the end pipe 13 and may cause deformation, etc. The electromagnet 7 arranged on the upper part of the end pipe 13 can magnetically attract the ferrous pipe workpiece 4 to reduce the stress and reduce the deformation of the ferrous pipe workpiece 4.

[0032] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A metal fitting bending device, comprising a bending machine (1) and an iron round tube workpiece (4), characterized in that: The bending machine (1) has a first hydraulic cylinder (2) installed on the top of its inner side, and the stroke rod of the first hydraulic cylinder (2) is fixed with a pressing component (3) vertically downward. Two second hydraulic cylinders (11) are fixed at both ends of the inner wall of the bending machine (1). Rotating columns (8) are rotatably connected to the stroke rods of the second hydraulic cylinders (11) at both ends that are close to each other. A sliding ring (9) is rotatably connected between the two rotating columns (8). A connecting structure is installed inside the sliding ring (9). The connecting structure is used to connect the iron round tube workpiece (4).

2. The metal fitting bending device according to claim 1, characterized in that: The connection structure includes a clamp tube (5) that is slidably connected to the inner wall of the sliding ring (9). The iron round tube workpiece (4) is installed inside the clamp tube (5). Both ends of the clamp tube (5) are provided with end tubes (13). The middle part of the clamp tube (5) is located in a groove (6) provided between the two end tubes (13). The sliding ring (9) slides on the outside of the groove (6). Multiple electromagnets (7) are installed inside the end tube (13).

3. The metal fitting bending device according to claim 1, characterized in that: A torsion spring (10) is installed between the rotating column (8) and the sliding ring (9).

4. The metal fitting bending device according to claim 2, characterized in that: Multiple first mounting pieces (12) are fixed to the outer side of the two end tubes (13), and second mounting pieces (14) with the same number and position as the first mounting pieces (12) are fixed to the outer side of the sliding ring (9). Springs (15) are installed between the second mounting pieces (14) and the first mounting pieces (12) on both sides.

5. The metal fitting bending device according to claim 4, characterized in that: A limiting rod (16) is fixed inside the two first mounting pieces (12), and the limiting rod (16) is slidably connected to the second mounting piece (14), and the limiting rod (16) is disposed inside the spring (15).

6. The metal fitting bending device according to claim 2, characterized in that: A limiting strip (17) is provided on the outer side of the slide groove (6), and the slide groove (6) and the sliding ring (9) are slidably connected through the limiting strip (17).

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