CN201436097U - Spindle for bend pipe formation of metal pipe - Google Patents
Spindle for bend pipe formation of metal pipe Download PDFInfo
- Publication number
- CN201436097U CN201436097U CN2009200599120U CN200920059912U CN201436097U CN 201436097 U CN201436097 U CN 201436097U CN 2009200599120 U CN2009200599120 U CN 2009200599120U CN 200920059912 U CN200920059912 U CN 200920059912U CN 201436097 U CN201436097 U CN 201436097U
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- China
- Prior art keywords
- mandrel
- spindle
- metal tube
- bend pipe
- forming according
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- Expired - Fee Related
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Abstract
A spindle for bend pipe formation of a metal pipe comprises a spindle, the front end of the spindle is in a conical form, a conical tip thereof is eccentrically arranged relative to a central axis of the spindle, and is deflection toward the inner side of the bend pipe. The conical tip position has smooth transition. On the cross section of the front end of the spindle, the section radian toward the inner side of the bend pipe is less than the section radian toward the outer side of the bend pipe. The spindle is provided with a lubricating oil channel; one end of an oil injection hole is arranged at the front end of the lubricating oil channel, the other end is arranged at the outer diameter of the front end of the spindle; one end of an oil inlet hole is arranged at the rear end of the lubricating oil channel, and the other end is arranged at the outer diameter of the rear end of the spindle; the rear end of the spindle is provided with an internal screwed hole communicated with the lubricating oil channel; and one end of the oil inlet hole is provided at the internal screwed hole. The utility model has the characteristics of simple and reasonable structure, low manufacturing cost, flexible operation, high production rate, which not only can ensure the size precision of a U-shaped pipe, but also can prolong the service life of the spindle.
Description
Technical field
The utility model relates to a kind of mandrel that is used for the metal tube bending tube forming, and particularly a kind of being used for done support in metal tube inside, makes the mandrel of the metal tube bending forming that is enclosed within its outside.
Background technology
The U-shaped metal tube as U-shaped copper pipe, U-shaped aluminum pipe or U-iron pipe, is to be used for the condenser of air-conditioning or the refrigerant circulation duct UNICOM on the evaporimeter are formed the closed circuit that seals.Because U-shaped metal tube use amount is big, it is also big to be used to bend the used mandrel mould consumption of the bending machine of U-shaped metal tube, and expending of mandrel mould is very high, and manufacturing cost is higher relatively.Yet at present the curved pearl mandrel that adopts is because the restriction of design, the cross-sectional strength that causes part during with the metal tube shaping suffered bending force do not match, mandrel lost efficacy because of fracture easily.And, often there is post-rift curved pearl to stay in the U-shaped pipe and is difficult to take out, so there is serious hidden danger of quality in product, increased operative employee's labour intensity simultaneously again greatly.
The utility model content
The purpose of this utility model aim to provide a kind of simple and reasonable, cost of manufacture is low, flexible operation, production efficiency height, can guarantee the dimensional accuracy of U-shaped pipe, can prolong the mandrel mandrel that is used for the metal tube bending tube forming in service life again, to overcome weak point of the prior art.
A kind of mandrel that is used for the metal tube bending tube forming by this purpose design comprises mandrel, it is characterized in that the front end of mandrel is coniform, and its cone tip part is provided with respect to the central axis of mandrel is eccentric, and deflection bend pipe inboard.
Described cone tip part rounding off.On the cross section of the front end of mandrel, little towards the cross section radian in the bend pipe outside towards the cross section of bend pipe inboard camber ratio.
Be provided with grease channel in the described mandrel; One end perforate of nozzle opening is in the front end of grease channel, and its other end perforate is in the front end external diameter of mandrel; One end perforate of fuel feed hole is in the rear end of grease channel, and its other end perforate is in the rear end of mandrel external diameter.
The rear end of described mandrel is provided with the internal thread hole that communicates with grease channel; One end perforate of fuel feed hole is in internal thread hole.Mandrel is positioned at position, internal thread hole place and is provided with for the keyway that clamps usefulness.
The external diameter of the front middle part of described mandrel is provided with the empty avoiding recess of the power of reducing friction.The empty avoiding recess arranges continuously that in the form of a ring perhaps, empty avoiding recess interval is symmetric arrangement uniformly.The middle part of mandrel be provided with that anti-stress concentrates rounded corner, rounded corner is positioned at the rear of empty avoiding recess.
The utility model in the cone tip part rounding off of the front end of mandrel, grease channel is set on mandrel, the empty avoiding recess of the power of reducing friction, anti-stress are concentrated rounded corner and for the keyway that clamps usefulness, both be convenient to mandrel turnover metal tube, prevented mandrel collision or scratch metal tube, dimensional accuracy and plumpness after frictional resistance in the time of reducing the mandrel turnover again, lifting U-shaped pipe are shaped, also be convenient to adjust or control mandrel, be beneficial to operation.
The utlity model has simple and reasonable, cost of manufacture is low, flexible operation, production efficiency height, can guarantee the dimensional accuracy of U-shaped pipe, can prolong the mandrel characteristics in service life again, applicable to metal tubes such as copper pipe, aluminum pipe, iron pipes, its scope of application is quite wide.
Description of drawings
Fig. 1 is the utility model one embodiment sectional structure schematic diagram.
Fig. 2 overlooks the partial structurtes schematic diagram for the left end of Fig. 1.
Fig. 3 is that A-A among Fig. 1 is to cross-sectional view.
Fig. 4 is that B-B among Fig. 1 is to cross-sectional view.
Fig. 5 is that C-C among Fig. 1 is to cross-sectional view.
Fig. 6 is the utility model user mode structural representation.
Among the figure: 1 is mandrel, and 1.1 is grease channel, and 1.2 is nozzle opening, and 1.3 are the empty avoiding recess, and 1.4 is rounded corner, and 1.5 is fuel feed hole, and 1.6 is keyway, and 1.7 is internal thread hole, and 2 is metal tube.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1-Fig. 5, originally be used for the mandrel of metal tube bending tube forming, comprise mandrel 1, the front end of mandrel is coniform, and its cone tip part is provided with respect to the central axis of mandrel 1 is eccentric, and deflection bend pipe inboard.The cone tip part rounding off of mandrel.On the cross section of the front end of mandrel 1, littler than the cross section radian measure beta outside bend pipe towards the cross section of bend pipe inboard radian measure alpha.
Be provided with grease channel 1.1 in the mandrel 1; One end perforate of nozzle opening 1.2 is in the front end of grease channel 1.1, and its other end perforate is in the front end external diameter of mandrel 1; The rear end of mandrel 1 is provided with the internal thread hole 1.7 that communicates with grease channel 1.1; One end perforate of fuel feed hole 1.5 is in internal thread hole 1.7, and its other end perforate is in the rear end of mandrel 1 external diameter.
Claims (9)
1. a mandrel that is used for the metal tube bending tube forming comprises mandrel (1), it is characterized in that the front end of mandrel is coniform, and its cone tip part is provided with respect to the central axis of mandrel is eccentric, and deflection bend pipe inboard.
2. the mandrel that is used for the metal tube bending tube forming according to claim 1 is characterized in that described cone tip part rounding off.
3. the mandrel that is used for the metal tube bending tube forming according to claim 1 is characterized in that on the cross section of front end of described mandrel (1), towards the cross section of bend pipe inboard radian (α) than little towards the cross section radian (β) in the bend pipe outside.
4. the mandrel that is used for the metal tube bending tube forming according to claim 1 is characterized in that being provided with in the described mandrel (1) grease channel (1.1); One end perforate of nozzle opening (1.2) is in the front end of grease channel, and its other end perforate is in the front end external diameter of mandrel; One end perforate of fuel feed hole (1.5) is in the rear end of grease channel, and its other end perforate is in the rear end of mandrel external diameter.
5. the mandrel that is used for the metal tube bending tube forming according to claim 4 is characterized in that the rear end of described mandrel (1) is provided with the internal thread hole (1.7) that communicates with grease channel (1.1); One end perforate of fuel feed hole (1.5) is in internal thread hole.
6. the mandrel that is used for the metal tube bending tube forming according to claim 5 is characterized in that described mandrel (1) is positioned at internal thread hole (1.7) position, place and is provided with for the keyway (1.6) that clamps usefulness.
7. the mandrel that is used for the metal tube bending tube forming according to claim 1 is characterized in that the external diameter of the front middle part of described mandrel (1) is provided with the empty avoiding recess (1.3) of the power of reducing friction.
8. the mandrel that is used for the metal tube bending tube forming according to claim 7 is characterized in that described empty avoiding recess (1.3) arranges in the form of a ring continuously, and perhaps, the empty avoiding recess is symmetric arrangement uniformly at interval.
9. the mandrel that is used for the metal tube bending tube forming according to claim 7, the middle part that it is characterized in that described mandrel (1) be provided with that anti-stress concentrates rounded corner (1.4), rounded corner is positioned at the rear of empty avoiding recess (1.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200599120U CN201436097U (en) | 2009-07-02 | 2009-07-02 | Spindle for bend pipe formation of metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200599120U CN201436097U (en) | 2009-07-02 | 2009-07-02 | Spindle for bend pipe formation of metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436097U true CN201436097U (en) | 2010-04-07 |
Family
ID=42372553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200599120U Expired - Fee Related CN201436097U (en) | 2009-07-02 | 2009-07-02 | Spindle for bend pipe formation of metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436097U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886406A (en) * | 2012-10-09 | 2013-01-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Soft mandrel for forming conduit |
| CN104353713A (en) * | 2014-11-06 | 2015-02-18 | 格力电器（武汉）有限公司 | Pipe bending core rod |
| CN106552848A (en) * | 2016-11-14 | 2017-04-05 | 芜湖通和汽车管路系统股份有限公司 | For the core muscle of automobile pipeline bending |
| CN109261766A (en) * | 2018-11-12 | 2019-01-25 | 格力电器（石家庄）有限公司 | Oil spout core bar |
-
2009
- 2009-07-02 CN CN2009200599120U patent/CN201436097U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886406A (en) * | 2012-10-09 | 2013-01-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Soft mandrel for forming conduit |
| CN102886406B (en) * | 2012-10-09 | 2015-06-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Soft mandrel for forming conduit |
| CN104353713A (en) * | 2014-11-06 | 2015-02-18 | 格力电器（武汉）有限公司 | Pipe bending core rod |
| CN106552848A (en) * | 2016-11-14 | 2017-04-05 | 芜湖通和汽车管路系统股份有限公司 | For the core muscle of automobile pipeline bending |
| CN109261766A (en) * | 2018-11-12 | 2019-01-25 | 格力电器（石家庄）有限公司 | Oil spout core bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Midea Refrigeration Equipment Co., Ltd. Assignor: Meidi Electric Appliances Co., Ltd., Guangdong Contract record no.: 2011440000209 Denomination of utility model: Spindle for bend pipe formation of metal pipe Granted publication date: 20100407 License type: Exclusive License Record date: 20110321 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100407 Termination date: 20130702 |