Exhaust pipe numerical control pipe bender

Abstract

The utility model provides a kind of exhaust pipe numerical control pipe bender, it is related to numerical control pipe bending equipment technical field, and it includes: workbench main body, bending mechanism, bending mechanism includes drive assembly, multiple extrusion assemblies and bending assembly, bending assembly includes track disc, guide block, limit block, track slot, guide slot and connecting block, track disc is fixedly connected on the surface of workbench main body, track slot is opened in the circumferential surface of track disc, guide block, limit block, guide slot and connecting block are all equipped with multiple, multiple guide slots are all opened in the surface of workbench main body, multiple connecting blocks are respectively slidably connected in the inner wall of multiple guide slots, the problem that traditional single-station pipe bender can only be processed, production efficiency is low, artificial waiting time is long is solved, batch production speed is significantly improved, unit processing cost is reduced, and the demand of modern manufacturing to efficient, energy-saving, intelligent production is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of CNC pipe bending equipment technology, and in particular to a CNC pipe bending machine for exhaust pipes. Background Technology

[0002] The CNC pipe bending machine for exhaust pipes is a specialized piece of equipment used for the precise bending of metal pipes. It is widely used in the automotive, aerospace, and construction industries. Traditional exhaust pipe bending machines are mostly single-station structures, using a CNC system to control hydraulic or servo motors to drive the bending molds, achieving automated bending of single pipes. They offer advantages such as high processing accuracy and good repeatability, making them suitable for mass production of standard bent pipe parts.

[0003] However, when faced with the task of mass production of multiple exhaust pipes of the same specification, traditional single-pipe bending machines can only process them one by one, resulting in low production efficiency, increased manual intervention and waiting time, and long overall production cycle and high cost, making it difficult to meet the needs of modern manufacturing industry for efficient, energy-saving and intelligent production.

[0004] Therefore, it is necessary to provide a CNC pipe bending machine for exhaust pipes to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a CNC pipe bending machine for exhaust pipes.

[0006] This utility model provides a CNC pipe bending machine for exhaust pipes, comprising: Workbench body; A bending mechanism includes a drive assembly, multiple extrusion assemblies, and a bending assembly. The bending assembly includes a track disc, guide blocks, limit blocks, track grooves, guide slots, and connecting blocks. The track disc is fixedly connected to the surface of the workbench body. The track grooves are formed on the circumferential surface of the track disc. Multiple guide blocks, limit blocks, guide slots, and connecting blocks are provided. Multiple guide slots are formed on the surface of the workbench body. Multiple connecting blocks are slidably connected to the inner walls of multiple guide slots. Multiple guide blocks are fixedly connected to the surfaces of multiple connecting blocks. Multiple limit blocks are fixedly connected to the surface of the workbench body. The extrusion assembly is used to extrude and fix the exhaust pipe. The drive assembly is used to control the movement of the connecting blocks and guide blocks along the guide slots.

[0007] Preferably, each extrusion assembly includes a base, a hydraulic cylinder, an expansion rod, a fixed plate, a T-slot, a sliding block, a limiting rod, and an expansion block. The base is fixedly connected to the surface of the workbench body, the hydraulic cylinder is fixedly connected to the surface of the base, the expansion rod is fixedly connected to the output end of the hydraulic cylinder, and the fixed plate is fixedly connected to the surface of the limiting block. Multiple T-slots, sliding blocks, limiting rods, and expansion blocks are provided. Multiple T-slots are formed on the surface of the fixed plate. Multiple sliding blocks are slidably connected to the inner walls of multiple T-slots. Multiple limiting rods are fixedly connected to the surfaces of multiple sliding blocks, and multiple expansion blocks are slidably connected to the surfaces of multiple expansion rods.

[0008] Preferably, the drive assembly includes a motor and a rotating arm. The motor is fixedly connected to the surface of the workbench body, the rotating arm is fixedly connected to the output shaft of the motor, and both ends of the rotating arm are fixedly connected to the surfaces of two connecting blocks respectively.

[0009] Preferably, each of the plurality of guide blocks has a support block fixedly connected to its surface.

[0010] Preferably, the expansion rod is frustum shaped, and the inner walls of the plurality of expansion blocks are all inclined surfaces, and the inclined surfaces are in contact with the expansion rod.

[0011] Preferably, the plurality of expansion blocks are arranged in a circumferential array on the fixed disk.

[0012] Compared with related technologies, the CNC pipe bending machine for exhaust pipes provided by this utility model has the following beneficial effects: 1. This utility model effectively solves the problem of low production efficiency in traditional single-station exhaust pipe CNC bending machines, which can only process one pipe at a time during batch production. By setting up multiple sets of synchronous bending mechanisms, it can clamp, bend and shape two or more exhaust pipes at the same time, realizing parallel processing of multiple pipes, significantly improving the output per unit time, reducing equipment idle time and manual waiting time. The whole process is automatically controlled by the CNC system, which greatly shortens the production cycle, reduces labor costs and energy consumption, and is particularly suitable for the high-efficiency production needs of large batches of pipe fittings of the same specifications, such as automotive exhaust systems.

[0013] 2. This utility model adopts an internal support hydraulic clamping structure. Multiple inclined expansion blocks are pushed outward synchronously by a frustum-shaped expansion rod, achieving uniform and firm clamping from the inside of the pipe. This avoids the damage or deformation of the pipe wall caused by traditional external clamping methods. It is especially suitable for processing exhaust pipes with thin walls or high surface requirements. At the same time, the support blocks set on the guide block provide dynamic support during bending. With the precise guidance of the track plate and track groove, it ensures that the bending angle is consistent and the roundness is high. The overall structure is stable and reliable, easy to maintain, and has the advantages of high efficiency, high precision and high yield. Attached Figure Description

[0014] Figure 1 A first-view perspective perspective view provided for this utility model; Figure 2 A second-view perspective perspective view provided for this utility model; Figure 3 A partial exploded view provided for this utility model; Figure 4 Provided by this utility model Figure 3 Enlarged view of point A in the middle.

[0015] The following are the labeling elements in the diagram: 1. Main body of the workbench; 201. Track plate; 202. Guide block; 203. Limiting block; 204. Track groove; 205. Guide groove; 206. Connecting block; 301. Base; 302. Hydraulic cylinder; 303. Expansion rod; 304. Fixed plate; 305. T-slot; 306. Sliding block; 307. Limiting rod; 308. Expansion block; 401. Motor; 402. Rotating arm; 5. Support block. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1 to 4 A CNC pipe bending machine for exhaust pipes, comprising: Workbench body 1; The bending mechanism includes a drive assembly, multiple extrusion assemblies, and a bending assembly. The bending assembly includes a track disk 201, a guide block 202, a limiting block 203, a track groove 204, a guide groove 205, and a connecting block 206. The track disk 201 is fixedly connected to the surface of the workbench body 1. The track groove 204 is formed on the circumferential surface of the track disk 201. Multiple guide blocks 202, limiting blocks 203, guide grooves 205, and connecting blocks 206 are provided. Multiple guide grooves 205 are formed on the surface of the workbench body 1. Multiple connecting blocks 206 are slidably connected to the inner walls of multiple guide grooves 205. Multiple guide blocks 202 are fixedly connected to the surfaces of multiple connecting blocks 206. Multiple limiting blocks 203 are fixedly connected to the surface of the workbench body 1. The extrusion assembly is used to extrude and fix the exhaust pipe. The drive assembly is used to control the movement of the connecting block 206 and the guide block 202 along the guide groove 205.

[0018] In the specific implementation process, multiple exhaust pipes that need to be bent are inserted into the circular channel formed by the splicing of the track groove 204 and the guide block 202. After the pipe passes through the limiting block 203, it continues to be pushed until the front end of the pipe covers the area where multiple expansion blocks 308 are located. The pipe is fixed by the extrusion component. At this time, the drive component is activated to drive the connecting block 206 and the guide block 202 to move along the guide groove 205, so that the pipe bends along the direction of the track groove 204, thus achieving the purpose of pipe bending. This structure supports the simultaneous clamping and positioning of multiple pipes, which improves the space utilization and processing preparation efficiency of the equipment. It is especially suitable for the batch production of exhaust pipes with the same bending angle, saving the time of clamping each pipe in sequence.

[0019] refer to Figures 1 to 4 As shown, each extrusion assembly includes a base 301, a hydraulic cylinder 302, an expansion rod 303, a fixed plate 304, a T-slot 305, a sliding block 306, a limiting rod 307, and an expansion block 308. The base 301 is fixedly connected to the surface of the workbench body 1, the hydraulic cylinder 302 is fixedly connected to the surface of the base 301, the expansion rod 303 is fixedly connected to the output end of the hydraulic cylinder 302, and the fixed plate 304 is fixedly connected to the surface of the limiting block 203. The T-slot 305, sliding block 306, and limiting rod 308 are also included. Multiple T-slots 305 are provided on the surface of the fixed plate 304, multiple sliding blocks 306 are slidably connected to the inner walls of the multiple T-slots 305, multiple limiting rods 307 are fixedly connected to the surface of the multiple sliding blocks 306, and multiple limiting rods 307 are slidably connected to the inner walls of the T-slots 305, multiple expansion blocks 308 are fixedly connected to the surface of the multiple sliding blocks 306, and multiple expansion blocks 308 are slidably connected to the surface of the expansion rod 303.

[0020] In the above embodiment, after the pipe is positioned, the hydraulic cylinder 302 is activated to push the expansion rod 303 toward the fixed plate 304. Since the expansion rod 303 is frustum-shaped and its surface gradually becomes thicker, when it is inserted into the fixed plate 304, it will contact multiple inclined expansion blocks 308 and apply radial outward thrust, forcing the expansion blocks 308 to slide outward along the T-groove 305. At the same time, the sliding block 306 moves synchronously in the T-groove. The limiting rod 307 plays a guiding and anti-dislodgement role. Finally, multiple expansion blocks 308 tightly press against the pipe from the inner wall to achieve automatic clamping and prevent slippage. This internal support clamping method has uniform force and firm clamping, and is especially suitable for thin-walled or easily deformable pipes, avoiding damage to the surface from external clamping.

[0021] refer to Figures 1 to 4 As shown, the drive assembly includes a motor 401 and a rotating arm 402. The motor 401 is fixedly connected to the surface of the worktable body 1, and the rotating arm 402 is fixedly connected to the output shaft of the motor 401. Both ends of the rotating arm 402 are respectively fixedly connected to the surfaces of two connecting blocks 206.

[0022] In the above embodiment, the motor 401 is started, and its output shaft drives the rotating arm 402 to rotate. The two ends of the rotating arm 402 are connected to two connecting blocks 206, thereby driving the connecting blocks 206 to move in an arc along the guide groove 205, causing the guide block 202 to rotate around its center along the outer edge of the track disk 201. Since the pipe has been fixed at the bending starting point by the expansion block 308, the rotation of the guide block 202 will force the pipe to bend and form gradually along the curvature radius of the track groove 204, so as to achieve the purpose of completing the synchronous bending of multiple pipes in one action.

[0023] refer to Figures 1 to 4 As shown, support blocks 5 are fixedly connected to the surfaces of multiple guide blocks 202.

[0024] In the above embodiment, a support block 5 is added to the surface of the guide block 202. When the pipe is subjected to radial force during bending, the support block 5 can provide additional support from below to prevent the pipe from sagging or local deformation under its own weight or bending stress, thereby improving the bending accuracy and surface quality. The support structure moves synchronously with the guide block and is always located below the bending area to form dynamic support, effectively avoiding the problem of insufficient traditional fixed support points.

[0025] refer to Figures 1 to 4 As shown, the expansion rod 303 is in the shape of a frustum, and the inner walls of the multiple expansion blocks 308 are all inclined surfaces, which are in contact with the expansion rod 303.

[0026] In the above embodiment, the expansion rod 303 adopts a frustum shape design, and its outer surface is a continuous inclined surface, which is completely in contact with the inclined surface of the inner wall of the expansion block 308. Under hydraulic push, a smooth sliding fit is formed between the two, which can efficiently convert the axial thrust into radial expansion force, so that multiple expansion blocks 308 expand outward synchronously and evenly, achieving a consistent clamping force distribution and avoiding excessive force on one side. This conical transmission structure has fast response, low wear, and high repeatability, ensuring stable and reliable clamping action, extending the service life of the fixture, and improving the overall stability of the equipment.

[0027] refer to Figures 1 to 4 As shown, multiple expansion blocks 308 are arranged in a circular array on the fixed disk 304.

[0028] In the above embodiment, multiple expansion blocks 308 are evenly distributed in a circular array on the fixed disk 304 and are symmetrically arranged around the central axis. When the expansion rod 303 is pushed forward, all expansion blocks 308 are subjected to the same inclined plane thrust, realizing synchronous radial movement, ensuring that the clamping force applied to the inner wall of the pipe is completely symmetrical in the circumferential direction, achieving the purpose of high clamping concentricity and no damage to the pipe.

[0029] The working principle of the CNC pipe bending machine for exhaust pipes provided by this utility model is as follows: By setting multiple sets of synchronous bending mechanisms on the main body 1 of the workbench, multiple exhaust pipes can be bent simultaneously. In use, multiple pipes are respectively inserted into the circular channel composed of the track groove 204 and guide block 202, and pass through the limiting block 203 until the pipes cover the area of ​​the expansion block 308. The hydraulic cylinder 302 is then activated to push the frustum-shaped expansion rod 303 forward, causing multiple inclined expansion blocks 308 to slide outward synchronously along the T-slot 305, achieving a firm clamping from the inner wall of the pipes. Subsequently, the motor 401 is activated to drive the rotating arm 402 to rotate, driving the connecting block 206 and... The guide block 202 moves in an arc along the guide groove 205, causing the pipe to bend continuously along the radius of curvature of the track plate 201. After bending is completed, the motor 401 reverses and resets, and the hydraulic cylinder 302 retracts to release the clamping force, allowing the finished product to be removed. The entire process can simultaneously position, clamp, and bend two or more pipes, solving the problems of traditional single-station pipe bending machines that can only process one pipe at a time, resulting in low production efficiency and long waiting times for manual labor. It significantly improves the speed of batch production, reduces the unit processing cost, and meets the needs of modern manufacturing for efficient, energy-saving, and intelligent production.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A CNC pipe bending machine for exhaust pipes, characterized in that, include: Workbench body (1); The bending mechanism includes a drive assembly, multiple extrusion assemblies, and a bending assembly. The bending assembly includes a track plate (201), a guide block (202), a limiting block (203), a track groove (204), a guide groove (205), and a connecting block (206). The track plate (201) is fixedly connected to the surface of the workbench body (1). The track groove (204) is formed on the circumferential surface of the track plate (201). The guide block (202), the limiting block (203), the guide groove (205), and the connecting block (206) are all... Multiple guide slots (205) are provided, each of which is formed on the surface of the workbench body (1). Multiple connecting blocks (206) are slidably connected to the inner walls of the multiple guide slots (205). Multiple guide blocks (202) are fixedly connected to the surfaces of the multiple connecting blocks (206). Multiple limiting blocks (203) are fixedly connected to the surface of the workbench body (1). The extrusion assembly is used to extrude and fix the exhaust pipe. The drive assembly is used to control the connecting blocks (206) and guide blocks (202) to move along the guide slots (205).

2. The CNC pipe bending machine for exhaust pipes according to claim 1, characterized in that, Each of the extrusion components includes a base (301), a hydraulic cylinder (302), an expansion rod (303), a fixed plate (304), a T-slot (305), a sliding block (306), a limiting rod (307), and an expansion block (308). The base (301) is fixedly connected to the surface of the workbench body (1), the hydraulic cylinder (302) is fixedly connected to the surface of the base (301), the expansion rod (303) is fixedly connected to the output end of the hydraulic cylinder (302), the fixed plate (304) is fixedly connected to the surface of the limiting block (203), and the T-slot (305) and sliding block (306) are fixedly connected to the surface of the limiting block (203). Multiple limiting rods (307) and expansion blocks (308) are provided. Multiple T-slots (305) are opened on the surface of the fixed plate (304). Multiple sliding blocks (306) are slidably connected to the inner walls of multiple T-slots (305). Multiple limiting rods (307) are fixedly connected to the surface of multiple sliding blocks (306) and multiple limiting rods (307) are slidably connected to the inner walls of T-slots (305). Multiple expansion blocks (308) are fixedly connected to the surface of multiple sliding blocks (306) and multiple expansion blocks (308) are slidably connected to the surface of expansion rods (303).

3. The CNC pipe bending machine for exhaust pipes according to claim 1, characterized in that, The drive assembly includes a motor (401) and a rotating arm (402). The motor (401) is fixedly connected to the surface of the workbench body (1), and the rotating arm (402) is fixedly connected to the output shaft of the motor (401). Both ends of the rotating arm (402) are respectively fixedly connected to the surfaces of two connecting blocks (206).

4. The CNC pipe bending machine for exhaust pipes according to claim 2, characterized in that, Each of the multiple guide blocks (202) has a support block (5) fixedly connected to its surface.

5. A CNC pipe bending machine for exhaust pipes according to claim 2, characterized in that, The expansion rod (303) is in the shape of a frustum, and the inner walls of the plurality of expansion blocks (308) are all inclined surfaces, and the inclined surfaces are in contact with the expansion rod (303).

6. A CNC pipe bending machine for exhaust pipes according to claim 5, characterized in that, Multiple expansion blocks (308) are arranged in a circumferential array on a fixed disk (304).

Images