Production method of hose elbow connection and processing device used in the method

Abstract

The invention provides a manufacturing method for a hose elbow joint and machining equipment applied in the method, which belongs to the mechanical technology field. The invention solves the problems that the heat treatment cannot be performed during the machining and casting of hoses conventionally. The manufacturing process for a hose elbow joint comprises the steps of a. preparing materials; b. machining convex rings; c. forming reducing joints; d. bending a pipe body; and e. forming a flange joint. In the step b, the periphery of a pipe is provided with a jig and one end of the pipe is inserted in an extrusion sleeve to enable a cylinder at the center of the extrusion sleeve to be inserted into the pipe. Meanwhile, the insertion end of the pipe abuts against the pressing surface at the periphery of the cylinder. A gap is reserved between the pressing surface of the jig and the pressing surface of the extrusion sleeve. The extrusion sleeve approaches the jig under the action of a pressure actuated device. Under the extrusion effect of the jig, the extrusion sleeve and the cylinder, a convex ring protruded outwardly is formed on the pipe. The manufacturing method for a hose has the advantages of simple machining technique, low manufacturing cost, good molding effect and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a method for manufacturing a hose elbow joint and a processing device used in the method. Background technique [0002] Existing hose elbow joints used in air conditioners or other fields are generally formed by die-casting and red punching. There are insurmountable defects in the die-casting process: 1. Due to the high speed of filling the cavity with liquid metal during die-casting, the flow state is unstable, and the castings are prone to produce pores, so heat treatment cannot be performed; 2. The life of the die-casting product is low and unsuitable. Small batch production; 3. The pipe wall of the die-casting product is thicker, the amount of raw materials is large, and the production cost is high. The red punching processing method is a process method for stamping processing by utilizing the characteristics of the material that the tensile strength and shear strength are g...

AI Technical Summary

Problems solved by technology

There are insurmountable defects in the die-casting process: 1. Due to the high speed of filling the cavity with liquid metal during die-casting, the flow state is unstable, and the castings are prone to produce pores, so heat treatment cannot be performed; 2. The life of the die-casting product is low and unsuitable. Small batch production; 3. The pipe wall of die-casting products is thicker, the amount of raw materials is large, and the production cost is high

In addition, the size of the product obtained due to red punching can only be determined according to the mold. If products of different sizes are needed, molds must be manufactured separately, which increases the production cost.

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