Multi-station spinning forming device for metal pipe fittings

Abstract

The utility model relates to the technical field of forming devices, in particular to a metal pipe fitting multi-station spinning forming device which comprises a forming workbench, a guide rail, a spinning wheel and a clamping and fixing assembly, the clamping and fixing assembly comprises a fixing disc, a connecting disc is fixedly installed at one end of the fixing disc, a telescopic hydraulic cylinder is arranged at one end of the connecting disc, and the telescopic hydraulic cylinder is connected with the guide rail. The fixing mode that the second clamping plates are used for supporting on the inner wall and the first clamping plates are used for clamping on the outer side to form internal and external combination is adopted, so that the problem that the non-uniform stress condition is formed at the clamped part of the hollow metal pipe fitting, and consequently the metal pipe fitting is deformed in the machining process is avoided, the shape and size precision of the metal pipe fitting is ensured, and the machining efficiency is improved. By means of the spinning forming device, a machined product better meets the design requirement, the overall quality of the product is improved, the metal pipe fitting is more stable in the spinning forming process due to uniform stress distribution, and machining errors caused by shaking or displacement are reduced.

Description

Technical Field

[0001] This utility model relates to the field of forming equipment technology, specifically a multi-station spinning forming device for metal pipes. Background Technology

[0002] Multi-station spinning forming equipment for metal pipes is an automated device used for processing metal pipes. It is mainly used in spinning forming processes and uses spinning tools at multiple stations to process the pipes step by step, enabling the pipes to complete deformation, forming, and finishing processes in multiple processing steps. It is widely used in the automotive, aerospace, precision instrument, construction, and pipeline industries. Spinning forming is a processing method that uses the relative motion between the rotating workpiece and the tool to deform the metal in a plastic state under certain pressure, thereby forming the required geometric shape. Multiple stations perform different processing steps simultaneously, such as stretching, bending, flaring, and shrinking.

[0003] However, in existing devices, when processing and spinning metal pipes, the metal pipes are fixed by a clamping mechanism, and spinning is performed on the rotating metal pipes using double-sided spinning wheels. Since most metal pipes are hollow, when the clamping mechanism tightens one end of the metal pipe, the clamping part of the pipe will be subjected to uneven force, which will cause the metal pipe to deform during the processing. Utility Model Content

[0004] The purpose of this invention is to provide a multi-station spinning forming device for metal pipes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-station spinning forming device for metal pipe fittings, comprising a forming worktable, a guide rail, spinning wheels, and a clamping and fixing assembly. The clamping and fixing assembly includes a fixing plate, a connecting plate fixedly installed at one end of the fixing plate, a telescopic hydraulic cylinder provided at one end of the connecting plate, a telescopic guide post installed at one end of the telescopic hydraulic cylinder, a fixing cylinder fixedly installed at one end of the fixing plate, the telescopic guide post being disposed inside the fixing cylinder, and a first connecting rod rotatably connected to the outside of the telescopic guide post.

[0006] As a further preferred embodiment of this technical solution, one end of the first connecting rod is rotatably connected to a second clamping plate, and the lower end of the second clamping plate is rotatably connected to a second connecting rod.

[0007] As a further preferred embodiment of this technical solution, one end of the second connecting rod is rotatably connected to the outside of the fixed cylinder, and one end of the second clamping plate contacts the inner wall of the metal pipe.

[0008] As a further preferred embodiment of this technical solution, the fixed disk has a sliding groove inside, a sliding block is slidably connected inside the sliding groove, and a lead screw is rotatably connected inside the sliding block.

[0009] As a further preferred embodiment of this technical solution, a nut is fixedly installed at the upper end of the lead screw, the lead screw is connected through the interior of the mounting plate, and the lower end of the mounting plate is located on the outside of the fixed plate.

[0010] As a further preferred embodiment of this technical solution, one end of the sliding block is fixedly connected to a first clamping plate, and one end of the first clamping plate contacts the outside of the metal pipe.

[0011] This utility model provides a multi-station spinning forming device for metal pipes, which has the following advantages:

[0012] (1) This utility model utilizes the second clamping plate to support the inner wall and the first clamping plate to clamp the outer side, forming a fixed method that combines the inner and outer sides. This avoids uneven stress on the clamping part of the hollow metal pipe, which would cause deformation of the metal pipe during processing. This helps to ensure the shape and dimensional accuracy of the metal pipe, making the processed product more in line with the design requirements and improving the overall quality of the product. The uniform stress distribution makes the metal pipe more stable during the spinning process, reducing processing errors caused by shaking or displacement.

[0013] (2) This utility model enables the device to adapt to metal pipes of different sizes by cooperating components such as lead screw, sliding block and first clamping plate. The outer diameter of the pipe can be adapted by adjusting the position of the first clamping plate. On the other hand, the second clamping plate can be adjusted according to the different diameters of the metal pipes, and can flexibly adapt to metal pipes with different inner diameters. This bidirectional adjustability can adapt to metal pipes of different specifications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the clamping and fixing component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the fixed cylinder, sliding groove, and telescopic guide column structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the sliding block, the first clamping plate, and the lead screw structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembled structure of the clamping and fixing component of this utility model;

[0019] In the diagram: 100, forming worktable; 101, guide rail; 102, spinning wheel; 200, clamping and fixing assembly; 201, fixing plate; 202, first clamping plate; 203, mounting plate; 204, nut; 205, second clamping plate; 206, sliding groove; 207, telescopic guide post; 208, fixing cylinder; 209, sliding block; 210, lead screw; 211, connecting plate; 212, telescopic hydraulic cylinder; 214, first connecting rod; 215, second connecting rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1 to 3 , Figure 5 As shown in this embodiment, a multi-station spinning forming device for metal pipes includes a forming worktable 100, a guide rail 101, a spinning wheel 102, and a clamping and fixing assembly 200. The clamping and fixing assembly 200 includes a fixing plate 201, a connecting plate 211 fixedly installed at one end of the fixing plate 201, a telescopic hydraulic cylinder 212 provided at one end of the connecting plate 211, a telescopic guide post 207 installed at one end of the telescopic hydraulic cylinder 212, a fixing cylinder 208 fixedly installed at one end of the fixing plate 201, the telescopic guide post 207 being disposed inside the fixing cylinder 208, a first connecting rod 214 rotatably connected to the outside of the telescopic guide post 207, a second clamping plate 205 rotatably connected to one end of the first connecting rod 214, a second connecting rod 215 rotatably connected to the lower end of the second clamping plate 205, a second connecting rod 215 rotatably connected to one end of the second connecting rod 215 being rotatably connected to the outside of the fixing cylinder 208, and one end of the second clamping plate 205 contacting the inner wall of the metal pipe.

[0022] Furthermore, such as Figures 2 to 4As shown, a sliding groove 206 is provided inside the fixed plate 201. A sliding block 209 is slidably connected inside the sliding groove 206. A lead screw 210 is rotatably connected inside the sliding block 209. A nut 204 is fixedly installed at the upper end of the lead screw 210. The lead screw 210 passes through and is connected inside the mounting plate 203. The lower end of the mounting plate 203 is located on the outside of the fixed plate 201. A first clamping plate 202 is fixedly connected to one end of the sliding block 209. One end of the first clamping plate 202 contacts the outside of the metal pipe. The operator uses... The tool rotates the nut 204, which drives the lead screw 210 to rotate. The lead screw 210 rotates inside the sliding block 209, which in turn drives the sliding block 209 to move within the sliding groove 206 of the fixed plate 201. The sliding block 209 further drives the first clamping plate 202 to move. When the first clamping plate 202 moves, it clamps and fixes itself to the outside of the metal pipe. With the synergistic effect of the lead screw 210, the sliding block 209, and the first clamping plate 202, it can adapt to and clamp metal pipes of different sizes.

[0023] In this scheme, when the metal pipe to be spun, the metal pipe is first aligned and placed in the center of the fixed plate 201. The operator uses a tool to rotate the nut 204, and the nut 204 drives the screw 210 to rotate. The lead screw 210 rotates inside the sliding block 209, thereby driving the sliding block 209 to move within the sliding groove 206 of the fixed plate 201. The sliding block 209 further drives the first clamping plate 202 to move. When the first clamping plate 202 moves, it clamps and fixes itself to the outside of the metal pipe. With the synergistic action of the lead screw 210, the sliding block 209, and the first clamping plate 202, it can adapt to and clamp metal pipes of different sizes. Then, by activating the telescopic hydraulic cylinder 212, the telescopic guide post 207 is pushed to telescopically move within the fixed cylinder 208. Since the outer side of the telescopic guide post 207 is rotatably connected to the first connecting rod 214, and one end of the first connecting rod 214 is rotatably connected to the second clamping plate 205, while the lower end of the second clamping plate 205 is rotatably connected to the second connecting rod 21. 5. One end of the second connecting rod 215 is rotatably connected to the outside of the fixed cylinder 208. Therefore, when the telescopic guide post 207 extends, the second clamping plate 205 will open outward through the linkage of the first connecting rod 214 and the second connecting rod 215 until one end of the second clamping plate 205 is in close contact with the inner wall of the metal pipe. The first clamping plate 202 clamps and fixes the metal pipe from the outside, thus firmly clamping and fixing the metal pipe. The second clamping plate 205 can also be retracted and adjusted according to the different diameters of the metal pipe. The second clamping plate 205 clamps and fixes the metal pipe to the inner wall and the outer first clamping plate 202, avoiding uneven stress on the clamping part of the hollow metal pipe, which would cause deformation of the metal pipe during processing.

[0024] This utility model provides a multi-station spinning forming device for metal pipe fittings. The specific working principle is as follows: When the metal pipe fitting to be spun is to be formed, the metal pipe fitting is first aligned and placed in the center of the fixed plate 201. The operator uses a tool to rotate the nut 204, and the nut 204 drives the lead screw 210 to rotate. The lead screw 210 rotates inside the sliding block 209, thereby driving the sliding block 209 to move within the sliding groove 206 of the fixed plate 201. The sliding block 209 further drives the first clamping plate 202 to move. When the first clamping plate 202 moves, it clamps and fixes itself to the outside of the metal pipe. With the synergistic action of the lead screw 210, the sliding block 209, and the first clamping plate 202, it can adapt to and clamp metal pipes of different sizes. Then, by activating the telescopic hydraulic cylinder 212, the telescopic guide post 207 is pushed to telescopically move within the fixed cylinder 208. Since the outside of the telescopic guide post 207 is rotatably connected to the first connecting rod 214, and one end of the first connecting rod 214 is rotatably connected to the second clamping plate 205, while the lower end of the second clamping plate 205 is rotatably connected to... There is a second connecting rod 215, and one end of the second connecting rod 215 is rotatably connected to the outside of the fixed cylinder 208. Therefore, when the telescopic guide post 207 extends, the second clamping plate 205 will open outward through the linkage of the first connecting rod 214 and the second connecting rod 215 until one end of the second clamping plate 205 is in close contact with the inner wall of the metal pipe. The first clamping plate 202 clamps and fixes the metal pipe from the outside, thereby firmly clamping and fixing the metal pipe. The second clamping plate 205 can also be retracted and adjusted according to the different diameters of the metal pipe. The second clamping plate 205 clamps and fixes the metal pipe to the inner wall of the metal pipe and the outer first clamping plate 202. After the metal pipe is clamped and fixed, the forming worktable 100 will start working according to the preset program. The spinning roller 102 moves along the guide rail 101 to spin the metal pipe. During the movement, the spinning roller 102 applies pressure to the metal pipe, causing it to undergo plastic deformation and achieve the desired shape.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station spinning forming device for metal pipe fittings, comprising a forming workbench (100), a guide rail (101), a spinning wheel (102) and a clamping and fixing assembly (200), characterized in that: The clamping fixing assembly (200) includes a fixing disc (201), one end of the fixing disc (201) is fixedly installed with a connecting disc (211), one end of the connecting disc (211) is provided with a telescopic hydraulic cylinder (212), one end of the telescopic hydraulic cylinder (212) is installed with a telescopic guide column (207), one end of the fixing disc (201) is fixedly installed with a fixing cylinder (208), the telescopic guide column (207) is arranged in the fixing cylinder (208), and the outer side of the telescopic guide column (207) is rotatably connected with a first connecting rod (214).

2. The multi-station spinning forming device for metal pipes according to claim 1, characterized in that: One end of the first connecting rod (214) is rotatably connected with a second clamping plate (205), and the lower end of the second clamping plate (205) is rotatably connected with a second connecting rod (215).

3. A multi-station spinning forming device for metal tubes according to claim 2, characterized in that: One end of the second connecting rod (215) is rotatably connected to the outer side of the fixing cylinder (208), and one end of the second clamping plate (205) is in contact with the inner wall of the metal pipe.

4. The multi-station spinning forming device for metal pipes according to claim 1, characterized in that: The inner side of the fixing disc (201) is provided with a sliding groove (206), and the inner side of the sliding groove (206) is slidably connected with a sliding block (209).

5. The multi-station spinning forming device for metal pipes according to claim 4, characterized in that: The inner side of the sliding block (209) is rotatably connected with a lead screw (210), the upper end of the lead screw (210) is fixedly installed with a nut (204), the lead screw (210) penetrates through the inner side of the mounting plate (203), and the lower end of the mounting plate (203) is arranged on the outer side of the fixing disc (201).

6. A multi-station spinning forming device for metal tubes according to claim 5, characterized in that: One end of the sliding block (209) is fixedly connected with a first clamping plate (202), and one end of the first clamping plate (202) is in contact with the outer side of the metal pipe.

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