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Forming technique of hose elbow core

A molding process and tube technology, applied in the field of machinery, to achieve the effect of simple method, beautiful appearance and cost reduction

Active Publication Date: 2012-07-18
王林秋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Forming technique of hose elbow core
  • Forming technique of hose elbow core
  • Forming technique of hose elbow core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1 to Figure 10 As shown, the forming process of the hose elbow core includes the following steps: a. material preparation, b. processing the convex ring 2, c. pipe body bending, d. flange forming, and processing the hose elbow core. Before the protruding ring 2 is processed, the necking can be carried out at the end. figure 1 The steps in the dotted box can be implemented according to actual needs.

[0039] Specifically, in the material preparation step a, a cylindrical pipe 1 is prepared, which is usually obtained by cutting a section from a common metal pipe with good cold plasticity, so as to prevent the pipe 1 from cracking, and the pipe 1 is processed. Annealing treatment; or obtained by cutting a section of pipe 1 from an annealed metal pipe. Annealing the pipe 1 can improve the toughness of the pipe 1 .

[0040] Before step b, one end of the pipe can be shrinked to make the diameter of the end smaller, and then a convex ring can be processed a...

Embodiment 2

[0054] Such as Figure 12 As shown, the content of embodiment 2 is basically the same as that of embodiment 1. The difference is that in step b, one end of the pipe 1 is inserted and can move circumferentially relative to the inner wall of the pipe 1 when the pipe 1 rotates and can be moved under the action of friction. A rolling head 5 that rotates by itself, the rolling head 5 has several rolling convex rings 6, and the rolling convex rings 6 can exert a radial outward force on the inner wall of the pipe 1 during the circumferential movement of the rolling head 5 around the inner wall of the pipe 1. The force, thus forming several protruding protruding rings 2 on the pipe 1. A plurality of convex rings 2 are simultaneously processed by rolling the convex ring 6 on the rolling head 5, and the requirement can be met by rolling once, which obviously improves the processing efficiency.

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Abstract

The invention provides a forming process of hose bend cores, and a processing device used in the process, belonging to the field of mechanical technology and solving the problems that in the pressure casting processing, the existing hose bend cores can not be thermally treated, have short service life and high cost; and the products are easy to crack in the red punching processing. The forming process of hose bend cores is realized by the following steps of: a. feed preparing; b. convex ring processing; c. hose body bending; and d. flange forming. The processing device of the hose bend cores comprises a convex ring forming device and a necking forming device. The convex ring forming device comprises a bracket and a holding fixture which is arranged on the bracket and used for fixing pipes, and a rolling mechanism is arranged at one side of the holding fixture. The necking forming device comprises the bracket and the holding fixture which is arranged on the bracket and used for fixing the pipes, and a forming head is arranged at one side of the holding fixture. The forming process has simple manufacturing method, beautiful product appearance, low cost and stable and reliable quality.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a molding process of a hose elbow core. Background technique [0002] Existing hose elbow cores used in air-conditioning or other fields are generally formed by two processing methods: 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 greatly reduced and the duct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/00B21D53/06B21D15/06B21D41/02B21D41/04
Inventor 王林秋
Owner 王林秋