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Method for welding copper capillary tube, method for manufacturing beading on same and manufacturing equipment thereof

A copper capillary and welding method technology, which is applied in welding equipment, metal processing equipment, arc welding equipment, etc., can solve the problem that the distance between the capillary inserted into the outer tube with the thick diameter is not easy to accurately control, and the copper capillary and the thick outer tube are difficult to define and fix. , poor welding strength and other problems, to achieve the effect of high assembly efficiency, high yield and high welding strength

Active Publication Date: 2010-06-16
苏州宏太铜材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper capillary is used in refrigeration equipment such as air conditioners, refrigerators, and freezers. It must be welded with other large-diameter outer tubes during assembly. However, due to the large matching gap between the two, the distance between the capillary and thick-diameter outer tubes is not large. It is easy to control accurately. The current commonly used method is: mark the capillary, when the capillary is inserted into the outer tube with a large diameter, and the inserted length just reaches the mark, it is welded. However, it is difficult to limit the distance between the copper capillary and the thick outer tube. and fixed, so it brings great difficulty to the operation
And the diameter of the copper capillary is very small, there is also the problem of poor welding strength

Method used

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  • Method for welding copper capillary tube, method for manufacturing beading on same and manufacturing equipment thereof
  • Method for welding copper capillary tube, method for manufacturing beading on same and manufacturing equipment thereof
  • Method for welding copper capillary tube, method for manufacturing beading on same and manufacturing equipment thereof

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Effect test

Embodiment 1

[0037] Example 1 It is required to process a 2.7×1.4×370mm copper capillary

[0038] The copper capillary of this specification is a high-grade copper capillary in the national standard; 2.7 means that the outer diameter of the copper capillary is 2.7±0.03mm; 1.4 means that the inner diameter of the copper capillary is 1.4±0.02mm; 370 means that the length of the copper capillary is 370 +2.0 mm. The copper capillary is to be welded with the outer tube with an inner hole of Φ3mm, the insertion length of both ends of the copper capillary is 15±1mm, and the welding shoulder is set to Φ3.5 +0.4 mm, shoulder width L 4 : 2±0.5mm see attached figure 1 shown.

[0039] Its processing equipment is attached figure 2 As shown, it mainly includes:

[0040] Rack 7;

[0041] A pair of clamping molds, including an upper clamping mold 4 and a lower clamping mold 14, the lower clamping mold 14 is fixedly arranged on the frame 7, and the upper clamping mold 4 passes through the lifting pl...

Embodiment 2

[0065] Embodiment 2 The size of the copper capillary to be produced is: height 1.8×0.67×2600.

[0066] Among them, "high" represents the advanced capillary in the national standard, 1.8±0.03mm represents the outer diameter of the copper capillary, 0.67±0.01mm is the inner diameter of the copper capillary, and 2600mm is the length of each copper capillary. The copper capillary outer tube should be welded with an outer tube with an inner diameter greater than 1.8 mm and less than 2.5 mm, and the length of the copper capillary inserted into the outer tube is 46 mm. -0 +1 mm, so the design value of the shoulder size of the copper capillary is Φ2.5±0.1, and the thickness is 2mm.

[0067] The copper capillary is processed as follows:

[0068] 1. According to the process of processing high-grade copper capillary outer tube, the tube blank is processed into a capillary outer tube with a height of 1.8×0.67 through five passes;

[0069] 2. Put the coiled copper capillary on the clean...

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Abstract

The invention relates to a method for welding a copper capillary tube, which is used for welding the copper capillary tube with an outer tube with larger diameter together. The method comprises the following steps: 1, forming the beading at a set position on the copper capillary tube to be welded; 2, inserting the end part to be welded of the copper capillary tube into the outer tube until the end surface of the outer tube is supported against the beading on the copper capillary tube; and 3, welding the copper capillary tube and the outer tube. The invention also relates to a method for forming the beading on the copper capillary tube, which mainly uses a pair of extruding dies to clamp and fix the front end part of the copper capillary tube, and uses a pair of clamp dies to clamp and fix the middle part of the copper capillary tube to ensure that the pair of the extruding dies can move backwards and extrude the copper capillary tube to form the beading. The welding method can quickly and accurately position, and the size and the smoothness of the inner diameter at the beading position of the copper capillary tube obtained by using the manufacturing method and the manufacturing equipment are fixed so as to ensure that the flow value or the pressure difference is consistent before and after manufacturing.

Description

technical field [0001] The invention relates to a copper capillary welding method and a method for forming a shoulder on the copper capillary, and also relates to a device for processing the shoulder on the copper capillary. Background technique [0002] Copper capillary is used in refrigeration equipment such as air conditioners, refrigerators, and freezers. It must be welded with other large-diameter outer tubes during assembly. However, due to the large matching gap between the two, the distance between the capillary and thick-diameter outer tubes is not large. It is easy to control accurately. The current commonly used method is: mark the capillary, when the capillary is inserted into the outer tube with a large diameter, and the inserted length just reaches the mark, it is welded. However, it is difficult to limit the distance between the copper capillary and the thick outer tube. And fixed, therefore brought very big difficulty to operation. Moreover, the diameter of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B21C23/00
Inventor 肖力畅
Owner 苏州宏太铜材有限公司