Steel pipe bending forming die

Abstract

The utility model discloses a steel pipe bending forming die and relates to the field of steel pipes. The steel pipe bending forming die comprises a bending die body, a pressing die is arranged above the bending die body, a control mechanism is arranged on the outer surface of the pressing die and comprises a supporting frame, the supporting frame is fixedly arranged above the pressing die, the two sides of the supporting frame are movably arranged in the bending die body, lower pressing rods are rotatably arranged on the two sides of the pressing die, and the lower pressing rods are movably arranged in the bending die body. The lower pressing type rod extrudes, bends and forms the steel pipe, the control ring is movably arranged in the bending die body, and the auxiliary springs are installed on the two sides of the control ring. According to the steel pipe bending forming die, the pressing die is arranged above the bending die body, the stability of downward movement of the pressing die is improved, a control ring and auxiliary springs on the two sides have a certain buffering effect on force generated when a steel pipe is bent and deformed, and an upper pressing rod and a lower pressing rod prevent the steel pipe from being clamped outside the pressing die through rotation of the upper pressing rod and the lower pressing rod; therefore, the bending stability of the steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe bending, in particular to a steel pipe bending forming die. Background Art

[0002] Steel pipes need to be bent during production. Steel pipes of the same length need to be processed into shapes with the same bending angle. Each bending process has its own special bending forming die. The steel pipe needs to be placed on the forming die, and then a hydraulic machine is used to extrude the steel pipe.

[0003] The existing steel pipe bending forming dies have the problem that the steel pipe is easily deformed and damaged during the extrusion process, and is easily stuck on the outside of the extruded part;

[0004] The reason for this problem is that during the bending process of the steel pipe, the steel pipe needs to be placed above the bending forming die first, and then the steel pipe is squeezed downward by the extrusion structure so that the steel pipe fits the internal bending line of the die to complete the bending process. The steel pipe itself is made of a harder material, and the extrusion force of the extrusion structure will be greater at this time. The steel pipe itself will also generate a certain rebound force to both sides when it is bent under force. At this time, continuing to press downward will cause the steel pipe to bend to one side, and the inside of the forming die will be concave. If the steel pipe is bent, one end of the steel pipe will be squeezed and deformed, resulting in damage to the shape of the steel pipe. At the same time, uneven force will also cause closing problems inside the steel pipe. In addition, the steel pipe is easily stuck on the outside of the pressing die due to excessive force during the extrusion forming process, which makes it difficult to remove it later. Therefore, we propose a steel pipe bending forming die. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a steel pipe bending forming die, which solves the problems of the existing steel pipe bending forming die that the steel pipe is easily deformed and damaged during the extrusion process and is easily stuck on the outside of the extruded part.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a steel pipe bending and forming die, including a bending die body, a pressing die is arranged above the bending die body, and a control mechanism is arranged on the outer surface of the pressing die, the control mechanism includes a support frame, which is fixedly arranged above the pressing die, and the two sides of the support frame are movably arranged inside the bending die body, and the lower pressing rod is rotatably arranged on both sides of the pressing die. The lower pressing rod extrude and bend the steel pipe, and the control ring is movably arranged inside the bending die body. The control ring controls the position of steel pipes of different sizes during forming by moving, and auxiliary springs are installed on both sides of the control ring. The auxiliary spring drives the control ring to automatically return to its position through tension.

[0009] Preferably, a support rod is fixedly connected to the interior of the bending mold body, and the control ring is movably sleeved on the exterior of the support rod.

[0010] Preferably, a telescopic sleeve is fixedly connected to the side of the control ring, the other end of the telescopic sleeve is fixedly connected to the inside of the bending mold body, the auxiliary spring is arranged inside the telescopic sleeve, the auxiliary spring is movably sleeved on the outside of the support rod, and the other side of the auxiliary spring is fixedly connected to the inside of the bending mold body.

[0011] Preferably, a support plate is fixedly connected to the bottom of the support frame, and a sliding block is fixedly connected to the bottom end of the support plate.

[0012] Preferably, a functional groove is formed on the upper portion of the bending mold body, the sliding block is slidably connected inside the functional groove, and the support plate is movably arranged inside the functional groove.

[0013] Preferably, a limiting rod is fixedly connected to the interior of the functional groove, and a control spring is movably sleeved on the outer surface of the limiting rod.

[0014] Preferably, the sliding block is fixedly connected to the top end of the control spring, and the sliding block is movably sleeved on the outer surface of the limiting rod.

[0015] Preferably, upper pressing rods are rotatably provided on both sides of the pressing die, and the upper pressing rods are arranged above the lower pressing rods.

[0016] The utility model discloses a steel pipe bending forming die, which has the following beneficial effects:

[0017] The steel pipe bending forming die is provided by placing the steel pipe in the middle of two groups of control rings, and then pushing the upper position of the press mold by a hydraulic rod. The press mold will move downward after being squeezed, and at this time, the two groups of lower press rods will squeeze the position of the steel pipe that needs to be bent. At this time, the support plates on both sides of the press mold will enter the inside of the functional groove. After the steel pipe is bent by force, the positions on both sides of the press mold will push the control rings to move toward the two ends of the support rods. By setting the press mold above the bending mold body, the stability of the press mold moving downward is increased. At the same time, when the steel pipe is bent, the control ring and the auxiliary springs on both sides play a certain buffering role on the force generated when the steel pipe is bent and deformed, preventing the steel pipe from being squeezed and deformed due to large force, and the control ring can play a certain limiting effect on the two end positions of the steel pipe. The upper press rod and the lower press rod prevent the steel pipe from being stuck on the outside of the press mold by rotating themselves, thereby increasing the stability of the steel pipe when it is bent and reducing its deformation. At the same time, it will also be convenient to remove the bent steel pipe later. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is an exploded view of the external structure of the bending die main body of the utility model;

[0021] Figure 3 This is an exploded view of the side structure of the support frame of the utility model;

[0022] Figure 4 This is a schematic diagram of the external structure of the compression mold of the utility model;

[0023] Figure 5 This is a schematic diagram of the side structure of the bending die body of the utility model;

[0024] Figure 6 This is an exploded view of the external structure of the support rod of the utility model.

[0025] In the figure: 1. bending mold body; 2. pressing mold; 201. support frame; 202. control spring; 203. control ring; 204. telescopic sleeve; 205. functional groove; 206. support rod; 207. auxiliary spring; 208. lower pressing rod; 209. upper pressing rod; 210. sliding block; 211. limit rod; 212. support plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The embodiment of the present application solves the problem that the steel pipe is easily deformed and damaged during the extrusion process and is easily stuck on the outside of the extruded part by providing a steel pipe bending and forming die.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The utility model embodiment discloses a binding device for file arrangement.

[0030] According to the attached Figure 1-6 As shown, it includes a bending die body 1, a pressing die 2 is arranged above the bending die body 1, and a control mechanism is arranged on the outer surface of the pressing die 2, the control mechanism includes a support frame 201, which is fixedly arranged above the pressing die 2, and both sides of the support frame 201 are movably arranged inside the bending die body 1, and a lower pressing rod 208 is rotatably arranged on both sides of the pressing die 2. The lower pressing rod 208 extrude and bend the steel pipe, and a control ring 203 is movably arranged inside the bending die body 1. The control ring 203 controls the position of steel pipes of different sizes during forming by moving, and auxiliary springs 207 are installed on both sides of the control ring 203. The auxiliary springs 207 drive the control ring 203 to automatically return to its position through tension.

[0031] The steel pipe is placed on top of the bending die body 1, and then the steel pipe is pressed downward by the pressing structure so that the steel pipe fits the inner bending line of the die to complete the bending process.

[0032] The inside of the bending mold body 1 is fixedly connected to a support rod 206, the control ring 203 is movably sleeved on the outside of the support rod 206, the side of the control ring 203 is fixedly connected to a telescopic sleeve 204, the other end of the telescopic sleeve 204 is fixedly connected to the inside of the bending mold body 1, and an auxiliary spring 207 is arranged inside the telescopic sleeve 204, the auxiliary spring 207 is movably sleeved on the outside of the support rod 206, and the other side of the auxiliary spring 207 is fixedly connected to the inside of the bending mold body 1.

[0033] A support plate 212 is fixedly connected to the bottom of the support frame 201, and a sliding block 210 is fixedly connected to the bottom end of the support plate 212. A functional groove 205 begins to be formed above the bending mold body 1. The sliding block 210 is slidably connected to the inside of the functional groove 205, and the support plate 212 is movably arranged inside the functional groove 205.

[0034] The functional groove 205 is internally fixedly connected with a limit rod 211, and the outer surface of the limit rod 211 is movably sleeved with a control spring 202. The sliding block 210 is fixedly connected to the top of the control spring 202, and the sliding block 210 is movably sleeved on the outer surface of the limit rod 211. Upper press rods 209 are rotatably arranged on both sides of the press mold 2, and the upper press rods 209 are arranged above the lower press rods 208.

[0035] By placing the steel pipe in the middle position of the two groups of control rings 203, and then pushing the upper position of the profiling die 2 through the hydraulic rod, the profiling die 2 will move downward after being squeezed. At this time, the two groups of lower profiling rods 208 will squeeze the position of the steel pipe that needs to be bent. At this time, thrusts will be generated on both ends of the steel pipe. While generating force, the two ends of the steel pipe will contact the side arc surfaces of the control rings 203. Therefore, while generating force, the two ends of the steel pipe will also squeeze the arc surfaces of the side of the control rings 203, so that the control rings 203 on both sides move to the two sides of the support rod 206 respectively. Auxiliary springs 207 are arranged on both sides of the control ring 203, which can play a certain buffering role for the force generated when the steel pipe is bent and deformed, and prevent the steel pipe from being squeezed and deformed due to large force. At the same time, the control ring 203 can play a certain limiting effect on the positions of the two ends of the steel pipe. The profiling die 2 is arranged above the bending die body 1, so that the support frame 201 supports the position of the profiling die 2. The support plate 212 has a limiting effect on the movement of the profiling die 2, which can increase the balance between the profiling die 2 and the bending die main body 1, increase the stability of the profiling die 2 moving downward, and reduce the problem of uneven force on the steel pipe. At the same time, an upper profiling rod 208 and a lower profiling rod 209 are arranged on both sides of the profiling die 2, which can reduce the friction between the profiling die 2 and the steel pipe, thereby facilitating the later removal of the steel pipe after profiling. By arranging the profiling die 2 above the bending die main body 1, the accuracy of the position between the bending die main body 1 and the profiling die 2 is increased, and the stability of the downward movement of the profiling die 2 is increased. At the same time, when the steel pipe is bent, the control ring 203 and the auxiliary springs 207 on both sides play a certain buffering role on the force generated when the steel pipe is bent and deformed, preventing the steel pipe from being squeezed and deformed due to large force. At the same time, the control ring 203 can have a certain limiting effect on the positions of the two ends of the steel pipe, and the upper profiling rod 208 and the lower profiling rod 209 prevent the steel pipe from being stuck on the outside of the profiling die 2 by their own rotation.

[0036] The molding die 2 is pushed downward by the external hydraulic rod. During the downward movement of the molding die 2, the sliding block 210 will slide inside the functional groove 205. At this time, the sliding block 210 will slide outside the limiting rod 211. During the downward movement, the sliding block 210 will squeeze the control spring 202 together with the inside of the functional groove 205. If the molding die 2 loses the downward thrust of the hydraulic rod, the control spring 202 will lose the squeezing force and generate tension. Under the action of the tension of the control spring 202, the sliding block 210 will be pushed upward, so that the sliding block 210 slides inside the functional groove 205. At this time, the support plate 212, the support frame 201 and the molding die 2 will also return to their original positions.

[0037] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0038] By placing the steel pipe in the middle position of the two groups of control rings 203, and then pushing the upper position of the profiling die 2 through the hydraulic rod, the profiling die 2 will move downward after being squeezed. At this time, the two groups of lower profiling rods 208 will squeeze the position of the steel pipe that needs to be bent. At this time, the support plates 212 on both sides of the profiling die 2 will enter the interior of the functional groove 205. After the steel pipe is bent by force, its two sides will push the control ring 203 to move toward the two ends of the support rod 206. By setting the profiling die 2 above the bending die body 1, the stability of the profiling die 2 moving downward is increased. At the same time, when the steel pipe is bent, the control ring 203 and the auxiliary springs 207 on both sides play a certain buffering role on the force generated when the steel pipe is bent and deformed, preventing the steel pipe from being squeezed and deformed due to large force, and the control ring 203 can have a certain limiting effect on the two end positions of the steel pipe. The upper profiling rod 208 and the lower profiling rod 209 prevent the steel pipe from being stuck on the outside of the profiling die 2 by their own rotation, thereby increasing the stability of the steel pipe when bending, reducing its deformation, and also facilitating the removal of the bent steel pipe.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A steel pipe bending die, comprising a bending die body (1), characterized in that: A pressing die (2) is arranged above the bending die body (1), and a control mechanism is arranged on the outer surface of the pressing die (2), wherein the control mechanism comprises: A support frame (201) is fixedly arranged above the pressing die (2), and two sides of the support frame (201) are movably arranged inside the bending die body (1); A lower pressing rod (208) is rotatably arranged on both sides of the pressing die (2), and the lower pressing rod (208) extrude and bend the steel pipe into shape; A control ring (203) is movably arranged inside the bending die body (1), and the control ring (203) controls the position of steel pipes of different sizes during forming by moving; Auxiliary springs (207) are installed on both sides of the control ring (203). The auxiliary springs (207) drive the control ring (203) to automatically return to its original position through tension.

2. A steel pipe bending forming die according to claim 1, characterized in that: A support rod (206) is fixedly connected to the interior of the bending die body (1), and the control ring (203) is movably sleeved on the exterior of the support rod (206).

3. The steel pipe bending die according to claim 1, characterized in that: A telescopic sleeve (204) is fixedly connected to the side of the control ring (203), the other end of the telescopic sleeve (204) is fixedly connected to the inside of the bending mold body (1), the auxiliary spring (207) is arranged inside the telescopic sleeve (204), the auxiliary spring (207) is movably sleeved on the outside of the support rod (206), and the other side of the auxiliary spring (207) is fixedly connected to the inside of the bending mold body (1).

4. The steel pipe bending die according to claim 1, characterized in that: A support plate (212) is fixedly connected below the support frame (201), and a sliding block (210) is fixedly connected to the bottom end of the support plate (212).

5. A steel pipe bending die according to claim 4, characterized in that: A functional groove (205) is provided above the bending mold body (1), the sliding block (210) is slidably connected inside the functional groove (205), and the supporting plate (212) is movably arranged inside the functional groove (205).

6. A steel pipe bending forming die according to claim 5, characterized in that: The interior of the functional groove (205) is fixedly connected to a limiting rod (211), and the outer surface of the limiting rod (211) is movably sleeved with a control spring (202).

7. The steel pipe bending die according to claim 4, characterized in that: The sliding block (210) is fixedly connected to the top end of the control spring (202), and the sliding block (210) is movably sleeved on the outer surface of the limiting rod (211).

8. The steel pipe bending die according to claim 1, characterized in that: Upper pressing rods (209) are rotatably arranged on both sides of the pressing mold (2), and the upper pressing rods (209) are arranged above the lower pressing rods (208).

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