CN201133787Y - Heating radiator fin connection inner joint - Google Patents
Heating radiator fin connection inner joint Download PDFInfo
- Publication number
- CN201133787Y CN201133787Y CNU2007201287930U CN200720128793U CN201133787Y CN 201133787 Y CN201133787 Y CN 201133787Y CN U2007201287930 U CNU2007201287930 U CN U2007201287930U CN 200720128793 U CN200720128793 U CN 200720128793U CN 201133787 Y CN201133787 Y CN 201133787Y
- Authority
- CN
- China
- Prior art keywords
- thread
- nipple
- inner joint
- millimeters
- heating radiator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an inner joint used for the connection of a heating radiator sheet which is drew to be a steel tube with high inner and outer diameter precision as well as smooth surface by a hydraulic machine after being phosphated by a high frequency welding tube. In order to improve the concentricity of the left thread and the right thread of the inner joint, the left group of thread rolling dies and the right group of thread rolling dies are simultaneously arranged by a thread forming machine and simultaneously the left thread and the right thread of the inner joint are simultaneously rolled. The inner joint used for the connection of a heating radiator sheet has the beneficial effects that the concentricity of the left thread and the right thread of the inner joint is better than that of being rolled by two times, thus improving the quality of connection assembly of the heating radiator sheets and the production cost is reduced by using a high frequency welding tube.
Description
Affiliated technical field
This uses novel association and a kind of convector to connect the pipe joint of usefulness.
Background technology
At present, the pipe joint that convector is used utilizes one to roll tooth machine rolling left thread by the high seamless steel pipe of cost, utilizes other platform to roll tooth machine rolling right thread and forms.Because the concentricity of the left thread of rolling and right thread is bad at twice, the radiator of assembling leaks gas easily.
Summary of the invention
The purpose of this utility model provides the nipple that a kind of convector sheet connects usefulness, is used to improve the assembling quality of convector, reduces production costs.
The purpose of this utility model is achieved in that nipple utilizes ratio-frequency welded tube after the epithelium processing in order to reduce cost, and utilizes the hydraulic press drawing to become inside and outside footpath precision height, ganoid steel pipe again.For the left thread that improves nipple and the concentricity of right thread, utilize and roll the tooth machine and load onto left and right two groups of THREAD ROLLING DIESs and the left thread and the right thread of rolling nipple together simultaneously simultaneously.
The beneficial effects of the utility model are: the left thread of nipple and the concentricity of right thread are better than rolling at twice, use the cost of ratio-frequency welded tube to reduce.
Description of drawings
Fig. 1 is the nipple schematic diagram that a kind of convector sheet connects usefulness.
Among Fig. 1: 1. left thread 2. right threads 3. outer grooves.
The specific embodiment
A kind of convector sheet connects the nipple of usefulness, form by steel pipe rolling external screw thread, the nipple external screw thread is made up of two parts, its tooth form is 55 ° of non-tight gas thread made in Great Britain, one end is left thread (1), the other end is right thread (2), one 2.5 millimeters to 4 millimeters outer groove (3) is arranged between left thread of nipple (1) and the right thread (2), the middle footpath of the left thread of nipple (1) is 31.56 millimeters of φ, the path of left thread (1) is 30 millimeters of φ, the middle footpath of the right thread of nipple (2) is 31.56 millimeters of φ, and the path of right thread (2) is 30 millimeters of φ.The outer of the both ends of the surface of nipple is 60 ° of angles to the angle, and the interior of the both ends of the surface of nipple is 60 ° of angles to the angle.
External diameter forms nipple through the epithelium processing, in drawing changes again by ratio-frequency welded tube, and the external diameter of used steel pipe is that 35 millimeters of φ, internal diameter are 28.6 millimeters of φ, and the external diameter of steel pipe is 31.4 ± 0.05 millimeters of φ after the drawing, and internal diameter is 25.4 ± 0.20 millimeters of φ.
The left thread of nipple and right thread are rollings simultaneously, the concentricity of its left thread and right thread≤0.20.
Claims (3)
1. a convector sheet connects the nipple of usefulness, its tooth form is 55 ° of non-tight gas thread made in Great Britain, form by steel pipe rolling external screw thread, it is characterized in that the nipple external screw thread is made up of two parts, one end is a left thread, the other end is a right thread, one 2.5 millimeters to 4 millimeters outer groove is arranged between the left thread of nipple and the right thread, the middle footpath of the left thread of nipple (1) is 31.56 millimeters of φ, the path of left thread (1) is 30 millimeters of φ, the middle footpath of the right thread of nipple (2) is 31.56 millimeters of φ, and the path of right thread (2) is 30 millimeters of φ.
2. a kind of convector sheet according to claim 1 connects the nipple of usefulness, it is characterized in that the outer of both ends of the surface of nipple is 60 ° of angles to the angle, and the interior of the both ends of the surface of nipple is 60 ° of angles to the angle.
3. a kind of convector sheet according to claim 1 connects the nipple of usefulness, it is characterized in that the left thread of nipple and right thread are rollings simultaneously, the concentricity of its left thread and right thread≤0.20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201287930U CN201133787Y (en) | 2007-08-16 | 2007-08-16 | Heating radiator fin connection inner joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201287930U CN201133787Y (en) | 2007-08-16 | 2007-08-16 | Heating radiator fin connection inner joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133787Y true CN201133787Y (en) | 2008-10-15 |
Family
ID=40062058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201287930U Expired - Fee Related CN201133787Y (en) | 2007-08-16 | 2007-08-16 | Heating radiator fin connection inner joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133787Y (en) |
-
2007
- 2007-08-16 CN CNU2007201287930U patent/CN201133787Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20090916 |