Welding-free exhaust pipe progressive bending machine for automobile and working method thereof

Abstract

The invention discloses a welding-free exhaust pipe progressive bending machine for an automobile. The bending machine comprises a plurality of first progressive bending pipe assemblies, second progressive bending pipe assemblies and pipe fitting support assemblies which are arranged at intervals in parallel, wherein the first progressive bending pipe assemblies and the second progressive bendingpipe assemblies are arranged on a mounting base; the first progressive bending pipe assemblies and the second progressive bending pipe assemblies are provided with pressure sensors, ultrasonic flaw detectors and laser three-dimensional scanners; and the pressure sensors, the ultrasonic flaw detectors and the laser three-dimensional scanners are connected to a central processing unit. The inventionfurther discloses a working method of the welding-free exhaust pipe progressive bending machine. According to the welding-free exhaust pipe progressive bending machine for the automobile and the working method thereof, the first progressive bending pipe assemblies and the second progressive bending pipe assemblies can freely adjust the postures, the pressure sensors, the ultrasonic flaw detectors, the laser three-dimensional scanners and the central processing unit can monitor the working process of all the components in real time, and tearing caused by excessive stretching, excessive deformation or violent twisting can be prevented.

Description

technical field [0001] The invention relates to a stretch bending machine, in particular to a progressive stretch bending machine for an exhaust pipe and a working method thereof. Background technique [0002] Pipe bending technology is widely used in the production and manufacture of pipe bends in central air-conditioning, automobile industry, aerospace industry, shipbuilding and other industries. The quality of pipe bends will directly affect the structural rationality of products in these industries , safety, reliability, etc., and the feeding of the pipe fittings is mainly controlled by the booster device during the pipe bending process of the pipe bending machine. The front end of the device has reached the position of the anti-wrinkle plate on the bending machine head. At this time, the pipe pushing device cannot continue to move forward due to the restriction of the anti-wrinkle plate, so it cannot continue to provide force to the pipe. Push the remaining pipe fittin...

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Problems solved by technology

[0002] Pipe bending technology is widely used in the production and manufacture of pipe bends in central air-conditioning, automobile industry, aerospace industry, shipbuilding and other industries. The quality of pipe bends will directly affect the structural rationality of products in these industries , safety, reliability, etc., and the feeding of the pipe fittings is mainly controlled by the booster device during the pipe bending process of the pipe bending machine. The front end of the device has reached the position of the anti-wrinkle plate on the bending machine head. At this time, the pipe pushing device cannot continue to move forward due to the restriction of the anti-wrinkle plate, so it cannot continue to provide force to the pipe. Push the remaining pipe fittings in the pipe fitting chuck out for processing. At this time, the remaining pipe fittings in the pipe fitting chuck become processing surplus materials and are wasted. At present, the mechanical pipe bending industry often uses push bending, pulling bending, winding bending, and pressing bending. When processing bent pipes in the same way, the bending mechanisms used are all one-way bending mechanisms. If a pipe needs to be bent in multiple directions in different directions, it can only be solved by changing the material, which is labor-intensive and requires replacement. The material process affects the processing accuracy and molding quality;

[0003] Chinese patent ZL201110438634 discloses a pipe bender. The pipe bender uses a driving mechanism to fix the first roller at the limit position corresponding to the root of the mandrel head of the guide structure to withstand the pipe material, and drives the second roller in another The guide structure moves from the limit position corresponding to the root of the mandrel head to the limit position corresponding to the end of the mandrel head. During this process, the tube material is bent by rolling the tube material with the second roller. Although the pipe bender can The pipe material is bent into Z-shape, W-shape and other shapes, but there are still the following problems: 1. The driving mechanism is set on the work table, which will hinder the formed part of the pipe material during the bending process, especially not It is beneficial to the bending of serpentine pipes with multiple bending parts; 2. The relative position of the two rollers needs to be changed during the bending process, which affects the accuracy of the bending pipe; 3. The bending pipe requires two driving mechanisms, which is not only complicated in structure, but also The requirements for the driving mechanism are high, and special-shaped pipe fittings with complex shapes cannot be produced

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