Cold and hot composite forming system and method for spiral duct seam

Abstract

The invention provides a cold and hot composite forming system and method for a spiral duct seam, and belongs to the technical field of mechanical metal plates. The system comprises an uncoiling device, a heating control system, a seam forming unit, a seam pressing unit, an automatic air pipe cutting device and a supporting frame which are sequentially arranged from front to back. The heating control system comprises a heating device, an infrared temperature measurement sensor and a temperature controller; the heating devices are arranged on the two sides of the strip respectively; two sensing ends of the infrared temperature measuring sensor are respectively positioned on two sides of the strip; and the infrared temperature measurement sensor is connected with the temperature controller. A common spiral duct machine forming device is improved, a heating device is additionally arranged in front of a seaming forming roller, the machining thickness of common spiral duct equipment can be increased to 5 mm from within 1.2 mm through a seaming cold and hot composite forming method, the formed thick-wall spiral corrugated pipe is good in seaming quality and sealing performance, and the service life of the thick-wall spiral corrugated pipe is prolonged. And the ring stiffness and the compressive strength are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical sheet metal, and in particular relates to a cold-heat composite forming system and method for the bite of a spiral air duct, which is suitable for the spiral bite forming of high-strength medium-thick strips with a plate thickness of 1.2mm-5mm. Background technique [0002] At present, the spiral air duct produced by occlusal molding has a wall thickness generally limited to less than 1.2mm and a diameter of less than 1500mm. It was first used in the field of ventilation and cooling, and then gradually expanded to the return air duct of the purification system and the central air-conditioning ventilation duct. , Industrial air supply and exhaust ventilation pipes, mining gas drainage pipes, mining rubber coated air ducts and other fields. [0003] Due to a series of advantages such as simple forming technology, good sealing performance and high ring stiffness, the spiral bellows began to be pop...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, to provide a cold and hot composite molding system and method for the bite of the spiral air duct, to solve the problem that the existing spiral air duct equipment cannot produce thick-walled air ducts, and to expand The material selection and application scope of the spiral duct can extend the material of the spiral duct to high-strength steel, 7075 high-strength aluminum alloy, TC4 titanium alloy and other high-strength materials that are difficult to deform at room temperature, and promote the technological innovation of the spiral duct industry. The wall spiral duct can be applied to military fields such as aerospace, ships, nuclear submarines, etc.

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