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Expansion valve power head vertical welding device and welding method

A welding device and power head technology, applied in the field of valve expansion valve processing, can solve the problems of poor weld quality consistency, inconvenient operation, low efficiency, etc., achieve good consistency and stability, good load capacity, and reduce production costs Effect

Inactive Publication Date: 2015-08-05
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an expansion valve power head vertical welding device that can firmly fix the power head and perform welding in a manner that the power head rotates and the welding torch does not move. Problems of low efficiency and poor consistency of weld quality

Method used

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  • Expansion valve power head vertical welding device and welding method
  • Expansion valve power head vertical welding device and welding method
  • Expansion valve power head vertical welding device and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, see figure 1 , a vertical welding device for an expansion valve power head, including a frame 1, a positioning sleeve 2, a welding torch clamp 3 and a lifting seat 4.

[0034] The lower end of the frame 1 is provided with a base 11 . The base 11 is rotatably provided with a lower rotating shaft 13 through a bearing seat 12 . The lower rotating shaft 13 extends in the up and down direction. A conductive plate 14 is provided below the base 11 . The conductive disk 14 is connected to the lower end of the bearing seat 12, so the conductive disk 14 is electrically connected with the lower rotating shaft 13 through the bearing seat 12.

[0035] The positioning sleeve 2 is cylindrical. The positioning sleeve 2 is coaxial with the lower rotating shaft 13. The positioning sleeve 2 is located above the lower rotating shaft 13 . The lower end of the positioning sleeve 2 and the positioning seat 21 are connected together. A shift fork 22 is plugged into the p...

Embodiment 2

[0040] Embodiment two, the difference with embodiment one is:

[0041] see figure 2 , Also includes sharpening knife 5, air supply rod 6, leak detection switch 7 and repair welding control unit (not shown in the figure).

[0042] Cutter 5 is connected together with frame (frame 1 is not shown in this figure) liftably by feeding cylinder 51.

[0043] The upper end of air delivery rod 6 is hinged on the lower end of upper rotating shaft 44 by hinge shaft 61 . An air duct 81 is provided in the air delivery rod 6 . The outer surface of the upper end of the air delivery rod 6 is provided with an abutting surface 62 of the air rod part. The outlet 811 of the air passage of the air rod part is located at the free end of the air delivery rod 6 . The inlet 812 of the gas channel of the gas rod is located on the abutting surface 62 of the gas rod.

[0044] The lower end of the upper rotating shaft 44 is provided with a limiting block 48 . The limiting block 48 and the upper rotat...

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PUM

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Abstract

The invention relates to machining equipment and a method of an expansion valve, in particular to a vertical type welding device and a welding method of a power head of the expansion valve. The vertical type welding device of the power head of the expansion valve comprises a rack, a material clamping cylinder and a welding gun driving cylinder. A lower rotating shaft which extends in the vertical direction is arranged at the lower end of the rack, the upper end of the rack is connected with a lifting base in a lifting mode through the material clamping cylinder, and the lifting base is provided with an upper rotating shaft and a motor which drives the upper rotating shaft to rotate. The upper rotating shaft and the lower rotating shaft are coaxial. The middle of the rack is connected with a welding gun clip in a horizontal moving mode through the welding gun driving cylinder. The rack is provided with an electric conduction disk which is electrically connected with the lower rotating shaft or the upper rotating shaft together. The vertical type welding device of the power head of the expansion valve can fix the power head firmly and can conduct welding in the mode that the power head rotates and a welding gun is motionless, and the problems of being inconvenient to operate, low in efficiency and poor in consistency of welding joint quality in the welding process of the power head of an existing expansion valve are solved.

Description

technical field [0001] The invention relates to expansion valve processing equipment and methods, in particular to a vertical welding device and welding method for a power head of an expansion valve, belonging to the field of valve expansion valve processing. Background technique [0002] In air conditioning and refrigeration, the refrigerant in the power head of the thermal expansion valve plays a key role. If there is a gap in the power head of the expansion valve after welding, the refrigerant in the power head will leak, which will cause the air conditioner to fail. Therefore, the welding effect of the power head of the thermal expansion valve directly determines the heat. Expansion valve performance. A thermal expansion valve power head is disclosed in the patent document with the Chinese patent application number 2009101430472 and the publication date being November 18, 2009. The power head is welded by two end caps with through holes in the middle. [0003] In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02B23K37/04B23K37/02
CPCB23K37/02B23K37/0435B23K37/047
Inventor 谷小红蔡晋辉
Owner CHINA JILIANG UNIV