CN202411255U - Expansion head structure of expansion pipe - Google Patents
Expansion head structure of expansion pipe Download PDFInfo
- Publication number
- CN202411255U CN202411255U CN201120576328XU CN201120576328U CN202411255U CN 202411255 U CN202411255 U CN 202411255U CN 201120576328X U CN201120576328X U CN 201120576328XU CN 201120576328 U CN201120576328 U CN 201120576328U CN 202411255 U CN202411255 U CN 202411255U
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- China
- Prior art keywords
- ball
- bloated
- nut
- expansion
- hold
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- Expired - Lifetime
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Abstract
The utility model discloses an expansion head structure of an expansion pipe, which comprises an expansion ball and a fastening screw connected with an expansion rod. The expansion head structure is characterized in that a conical surface is formed on the side surface of the expansion ball; a guide conical surface is formed on the side surface of a nut of the fastening screw; the expansion ball is fixedly connected with the fastening screw; and the conical surface and the guide conical surface are in smooth transition. The expansion head structure has the advantages that raised edges can not occur on the connecting surface between the expansion ball and the fastening screw, so that the phenomenon that the inner wall of a copper bar is scratched can not occur, the structure is simple, and the expansion head structure is convenient to produce and machine.
Description
(1) technical field:
The utility model relates to a kind of bloated header structure of expand tube, particularly processes in the heat exchanger institute use tube expander, the bloated header structure of expand tube.
(2) background technology:
In the production process of air-conditioning heat exchanger, the operation of the copper pipe in the fin being carried out expand tube is most important, and this process is pushed an expand tube with expansion copper pipe diameter toward copper pipe is inner, and made copper pipe and closely be connected with heat sink normally through the external force effect.This expand tube is divided into expander roll and expands two parts, and bloated head comprises diameter greater than the bloated ball of copper pipe and the hold-down screw that is connected with expander roll, and general connected mode is that the ball that will expand of the nut through hold-down screw is connected on the expander roll.Owing to can't accomplish to fit like a glove when bloated ball and screw fit, in bloated ball side and pane mismatch error is often arranged, make the joint face place often have the edge outstanding; The diameter of ball and nut is all less owing to expand, so this mismatch error is difficult to avoid.And in the process of expand tube, the projecting edge that forms because of mismatch error can scratch by bloated copper pipe inwall, and serious also may scratch tube wall.Influence the quality of copper pipe.
(3) utility model content:
In order to overcome the deficiency of prior art, the purpose of the utility model provides a kind of simple in structure, the bloated header structure that can avoid scratching workpiece.
The utility model is to realize through following technical scheme:
A kind of bloated header structure of expand tube comprises the hold-down screw that expands ball and be connected with expander roll, and said bloated ball middle part is provided with through hole; The ball that expands is enclosed within through through hole on the double-screw bolt of said hold-down screw, and the ball front end that expands is established a platform, and its said bloated ball is connected with hold-down screw; Said platform is against the nut bottom; The outer surface of ball that expands is being provided with the guiding conical surface near nut one end, and the nut of hold-down screw is taper, seamlessly transits between the tapered side of the said guiding conical surface and nut.
Above-mentioned said fixed connection is said platform and nut bottom adhesive.
Above-mentioned said fixed connection also comprises the double-screw bolt surface bonding of the inwall and the hold-down screw of through hole.
Above-mentioned said nut is provided with installation groove radially.
Compared with prior art, the utility model has following advantage: the ball that 1, expands is fixedly connected with hold-down screw, and the ball that in the expand tube process, expands can not rotate and influence the expand tube quality; 2, the junction of the guiding conical surface of the conical surface of bloated ball and hold-down screw seamlessly transits, and can not produce raised edges, thereby in the process of expand tube, can not scratch the phenomenon of copper pipe inwall.3, the utility model is simple in structure, and production and processing is convenient, and cost is low.
(4) description of drawings:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the cut-away view of the utility model;
Fig. 3 is the cut-away view of bloated ball.
(5) specific embodiment:
Below in conjunction with accompanying drawing the utility model is done detailed explanation:
The utility model comprises the hold-down screw that expands ball 1 and be connected with expander roll (not marking); Said bloated ball 1 middle part is provided with through hole 4, and the ball 1 that expands is enclosed within through through hole 4 on the double-screw bolt 6 of said hold-down screw, and ball 1 front end that expands is established a platform 3; Said platform 3 was against nut 5 bottoms when said bloated ball 1 was connected with hold-down screw; Ball 1 outer surface that expands is being provided with the guiding conical surface 2 near nut 5 one ends, the nut 5 of hold-down screw seamlessly transits between the tapered side 8 of the said guiding conical surface 2 and nut 5 for taper.
Above-mentioned said fixed connection is said platform 3 and nut 5 bottom adhesive.
Above-mentioned said fixed connection also comprises the double-screw bolt 6 surface bondings of the inwall and the hold-down screw of through hole 4.
Above-mentioned said nut 5 is provided with installation groove 7 radially.Can instrument be put in when being installed to the head that expands on the expander roll and install in the groove, turning tool is to drive the hold-down screw rotation, the convenient installation.
The production method of the said bloated head of the utility model may further comprise the steps:
A. the ball 1 that will expand is enclosed within on the double-screw bolt 6 of hold-down screw, and said platform 3 is bondd with said nut 5 bottoms;
B. the inwall of said through hole 4 and double-screw bolt 6 surfaces of screw are bondd;
C. to the processing of polishing of the guiding conical surface 2 of the ball 1 that expands and the tapered side 8 of nut 5, make between the two to seamlessly transit.
The foregoing description is the preferred embodiments of the utility model; But the embodiment of the utility model is not limited thereto; Other are any not to deviate from change, the modification done under spirit and the principle of the utility model, substitute, combination, simplify; Be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (4)
1. the bloated header structure of an expand tube comprises the hold-down screw that expands ball and be connected with expander roll, and said bloated ball middle part is provided with through hole; The ball that expands is enclosed within through through hole on the double-screw bolt of said hold-down screw, and the ball front end that expands is established a platform, and it is characterized in that: said bloated ball is connected with hold-down screw; Said platform is against the nut bottom; The outer surface of ball that expands is being provided with the guiding conical surface near nut one end, and the nut of hold-down screw is taper, seamlessly transits between the tapered side of the said guiding conical surface and nut.
2. a kind of bloated header structure according to claim 1 is characterized in that: said fixed connection is said platform and nut bottom adhesive.
3. a kind of bloated header structure according to claim 2 is characterized in that: said fixed connection also comprises the double-screw bolt surface bonding of the inwall and the hold-down screw of through hole.
4. according to claim 2 or 3 described a kind of bloated header structures, it is characterized in that: said nut is provided with installation groove radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120576328XU CN202411255U (en) | 2011-12-31 | 2011-12-31 | Expansion head structure of expansion pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120576328XU CN202411255U (en) | 2011-12-31 | 2011-12-31 | Expansion head structure of expansion pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202411255U true CN202411255U (en) | 2012-09-05 |
Family
ID=46736051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120576328XU Expired - Lifetime CN202411255U (en) | 2011-12-31 | 2011-12-31 | Expansion head structure of expansion pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202411255U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909280A (en) * | 2011-12-31 | 2013-02-06 | 中山市奥美森自动化设备有限公司 | Expansion joint structure for expanding pipe and manufacturing method thereof |
| CN107520364A (en) * | 2017-08-19 | 2017-12-29 | 常州爱迪尔制冷科技有限公司 | Insert swollen finned heat exchanger D type swelling techniques and its insert swollen finned heat exchanger |
-
2011
- 2011-12-31 CN CN201120576328XU patent/CN202411255U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909280A (en) * | 2011-12-31 | 2013-02-06 | 中山市奥美森自动化设备有限公司 | Expansion joint structure for expanding pipe and manufacturing method thereof |
| WO2013097496A1 (en) * | 2011-12-31 | 2013-07-04 | 中山市奥美森自动化设备有限公司 | Expander head structure for tube expansion and manufacturing process therefor |
| CN102909280B (en) * | 2011-12-31 | 2016-03-30 | 郴州智造科技有限公司 | A kind of swollen header structure of expand tube and manufacture method thereof |
| CN107520364A (en) * | 2017-08-19 | 2017-12-29 | 常州爱迪尔制冷科技有限公司 | Insert swollen finned heat exchanger D type swelling techniques and its insert swollen finned heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENZHOU ZHIZAO TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONGSHAN HENGCHISEN AUTOMATION EQUIPMENT CO., LTD. Effective date: 20140827 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGSHAN HENGCHISEN AUTOMATION EQUIPMENT CO., LTD Free format text: FORMER NAME: ZHONGSHAN OMS AUTOMATION EQUIPMENT CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528400 ZHONGSHAN, GUANGDONG PROVINCE TO: 423000 CHENZHOU, HUNAN PROVINCE |
|
| CP03 | Change of name, title or address |
Address after: 5 No. 528400 Guangdong city in Zhongshan Province five Shan Tong Industrial Avenue Patentee after: ZHONGSHAN HENGCHISEN AUTOMATION EQUIPMENT CO.,LTD. Address before: Nine road 528400 Guangdong province Zhongshan Torch Development Zone No. 6 Patentee before: ZHONGSHAN OMS AUTOMATION EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140827 Address after: Chenzhou City, Hunan province 423000 Township Beihu district on the outskirts of the village OMS (Chenzhou) Industrial Park Patentee after: CHENZHOU ZHIZAO TECHNOLOGY Co.,Ltd. Address before: 5 No. 528400 Guangdong city in Zhongshan Province five Shan Tong Industrial Avenue Patentee before: ZHONGSHAN HENGCHISEN AUTOMATION EQUIPMENT CO.,LTD. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20160330 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |