CN109261766A - Oil injection core rod - Google Patents
Oil injection core rod Download PDFInfo
- Publication number
- CN109261766A CN109261766A CN201811344187.1A CN201811344187A CN109261766A CN 109261766 A CN109261766 A CN 109261766A CN 201811344187 A CN201811344187 A CN 201811344187A CN 109261766 A CN109261766 A CN 109261766A
- Authority
- CN
- China
- Prior art keywords
- core bar
- oil spout
- spout core
- oil
- nozzle opening
- 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.)
- Withdrawn
Links
- 238000002347 injection Methods 0.000 title abstract description 10
- 239000007924 injection Substances 0.000 title abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 238000005452 bending Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 description 69
- 230000000694 effects Effects 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention provides an oil injection core rod, relates to the technical field of auxiliary equipment tools in the bending process of a U-shaped pipe, and solves the technical problems of complex structure and high processing difficulty of the oil injection core rod in the prior art. The device comprises an oil injection core rod body, wherein the oil injection core rod body is of an integrally formed structure, the end part of the oil injection core rod body is of an arc surface structure, and the end of the arc surface structure of the oil injection core rod body, which extends into the copper pipe, can support the bending point of the copper pipe so as to guide the copper pipe to be bent into a U shape in the bending process of the copper pipe. The bending device is used for bending the U-shaped pipe.
Description
Technical field
Ancillary equipment technical field of tools during being bent the present invention relates to U-tube, more particularly, to a kind of oil spout core
Bar.
Background technique
Fin tube type heat exchanger of air condition is superimposed by a certain number of fins, and the hole on fin is then passed through using copper pipe
Make fin closely be superimposed to be formed.U-tube head and the tail docking forms the flow cycle of refrigerant.U-shaped copper pipe is bending process
In, it needs to carry out interior auxiliary power contact support using oil spout core bar and carrys out assistant formation, because copper pipe wall thickness is very thin, usually only 0.5mm, easily
Deformation, cracky, so to oil spout core bar support core print it is more demanding, support core print need to have higher surface gloss,
Structure size and surface lubrication effect.
Applicants have discovered that at least there is following technical problem in the prior art:
It is that separate structure, core print and core bar are connected by spring, spherical structure that existing long U pipe, which bends the oil spout core bar used,
Assembling is connect, front end core print bends process with U pipe and is bent.In use, it is connect with core bar by spring due to core print, core print
High frequency time is bent meeting so that contained spring elastic stress dies down, and free poor flexibility will lead to core print and not spring back appearance, copper pipe occurs
It is abnormal, and end core print difficulty of processing is big, quick abrasion, at high cost, structure limits the position of oil spout point excessively rearward, lubricant effect
Difference.
Summary of the invention
The purpose of the present invention is to provide a kind of oil spout core bars, and it is multiple to solve oil spout core bar structure existing in the prior art
Technical problem miscellaneous, difficulty of processing is big.Optimal technical scheme in many technical solutions provided by the invention can be generated all
More technical effect elaborations as detailed below.
To achieve the above object, the present invention provides following technical schemes:
A kind of oil spout core bar provided by the invention, including oil spout core bar ontology, the oil spout core bar ontology are integrally formed
The end of structure, the oil spout core bar ontology is globoidal structure, and copper pipe in the process of bending, protrudes into the spray in the copper pipe
Its globoidal structure end of wick bar body can support bending for the copper pipe a little U-shaped to guide the copper pipe to be bent into.
Preferably, the end of the oil spout core bar ontology is ellipsoid structure, which can support described
Copper pipe is bent a little.
Preferably, it is U-shaped structure that the oil spout core bar ontology, which is parallel to the outer contour shape in the section of its own axis,.
Preferably, the oil spout core bar ontology is internally provided with oil transportation channel, and the oil transportation channel is along the oil spout core
The length direction of bar body is distributed；Nozzle opening, the oil spout are set close to the globoidal structure end on the oil spout core bar ontology
Hole is connected with the oil transportation channel.
Preferably, the part or all of section of the oil transportation channel is along close to described its cross-sectional area of globoidal structure extreme direction
It is gradually reduced.
Preferably, screw thread is provided on the nozzle opening inner sidewall.
Preferably, the nozzle opening gradually subtracts greatly along far from its cross-sectional area of the direction of the oil transportation channel.
Preferably, the nozzle opening close to the globoidal structure end curved surface along the direction far from the oil transportation channel to institute
State the side inclination at globoidal structure end.
Preferably, the nozzle opening is evenly distributed on the oil spout core bar sheet along the circumferential direction of the oil spout core bar ontology
On body.
Preferably, the number of the nozzle opening is three.
The present invention provides oil spout core bar be an integral molding structure, overall structure is simple, reliable, intensity is high, stability
It is good, long service life, easy to process, and then solve that oil spout core bar structure existing in the prior art is complicated, difficulty of processing is big
The technical issues of.
Optimal technical scheme of the present invention can also at least have the following technical effects:
The outer contour shape of this body section of oil spout core bar is remaining of U-shaped structure, globoidal structure end and oil spout core bar ontology
Part connection transitions smooth is stablized, and globoidal structure end intensity is improved；
Oil transportation channel uses reducing pressurizing structure, increases injection pressure at nozzle opening；
Jet is the tool horn-like structure of internal thread, makes oil atomizing, oil spout is uniform；
Nozzle opening is designed using oblique nozzle opening, realizes that copper pipe bends a sufficient lubrication；
In conjunction with globoidal structure end and the gap of copper pipe, nozzle opening spray angle etc., using three pore structures, both can guarantee uniformly distributed
Property, while guaranteeing machinability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is oil spout core bar provided in an embodiment of the present invention longitudinal direction schematic cross-sectional view；
Fig. 2 is oil spout core bar transverse direction schematic cross-sectional view provided in an embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view that oil spout core bar provided in an embodiment of the present invention is located in copper pipe.
1- oil spout core bar ontology in figure；2- globoidal structure end；3- oil transportation channel；4- nozzle opening.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Referring to figures 1-3, the present invention provides a kind of oil spout core bar, including oil spout core bar ontology 1, oil spout core bar ontologies 1
It is an integral molding structure, the end of oil spout core bar ontology 1 is globoidal structure, and copper pipe in the process of bending, protrudes into the spray in copper pipe
Its globoidal structure end 2 of wick bar body 1 can support bending for copper pipe a little U-shaped to guide copper pipe to be bent into.Existing oil spout
Core bar is separate structure, and core head structure is complicated, difficulty of processing is big, at high cost, core print frequency of usage height, quick abrasion, life cycle
It is short, the proportion of goods damageds are high, abnormal hidden danger is big after damage, and oil spout core bar provided by the invention is an integral molding structure, and overall structure can
Lean on, intensity is high, stability is good, long service life, due to whole integrated molding, material consistency is good, washability is strong, machinability
It is superior, and there is good intensity, wearability in use, the extending life period reduces the proportion of goods damageds, avoids existing core print
The problems such as high frequency time bending causes contained spring elasticity to die down, curved convex caused by free poor flexibility, and nozzle is abnormal.Oil spout core bar sheet
The end of body 1 can use ellipsoid structure, which can support bending a little for copper pipe, and guidance copper pipe is bent.
As the embodiment of the present invention, optionally embodiment, oil spout core bar ontology 1 are parallel to the section of its own axis
Outer contour shape is U-shaped structure.Globoidal structure end 2 is the core print of oil spout core bar ontology 1, the rest part of oil spout core bar ontology 1
For core bar, core bar and core print joining place smooth steady effectively guide copper pipe bending.
As optionally embodiment of the embodiment of the present invention, oil spout core bar ontology 1 is internally provided with oil transportation channel 3, defeated
Oily channel 3 is distributed along the length direction of oil spout core bar；Nozzle opening 4, spray are set close to globoidal structure end 2 on oil spout core bar ontology 1
Oilhole 4 is connected with oil transportation channel 3.Lubricating oil flows to nozzle opening 4 by oil transportation channel 3, realizes and lubricates in copper pipe bending part,
The friction for reducing oil spout core bar ontology 1 and copper pipe inner wall avoids bending process damage copper pipe, copper pipe from abnormal situation occur.
As optionally embodiment of the embodiment of the present invention, the part or all of section of oil transportation channel 3 is along close to globoidal structure
Its cross-sectional area of 2 directions is held to be gradually reduced, oil transportation channel 3 uses reducing pressurizing structure, so that injection pressure increases at nozzle opening 4
Greatly, strong injection is formed.
As optionally embodiment of the embodiment of the present invention, screw thread on 4 inner sidewall of nozzle opening, nozzle opening 4 is along far from defeated
Its cross-sectional area of the direction in oily channel 3 gradually subtracts greatly, has the nozzle opening 4 of the horn-like structure of internal thread, discharges oil spout pressure
Power makes oil atomizing.
As optionally embodiment of the embodiment of the present invention, nozzle opening 4 close to globoidal structure end 2 curved surface along far from oil transportation
The direction in channel 3 is tilted to the side at globoidal structure end 2, and using the design of oblique nozzle opening, (i.e. nozzle opening 4 is close to globoidal structure end
2 curved surface is tilted along the direction far from oil transportation channel 3 to the side at globoidal structure end 2), so that lubricating oil is injected in copper pipe forward curved
It is processed, realize sufficient lubrication；Dissipating effect is also improved simultaneously, increases oil spout area.
As the embodiment of the present invention, optionally embodiment, nozzle opening 4 uniformly divide along the circumferential direction of oil spout core bar ontology 1
Cloth realizes copper pipe in the effect of the comprehensive lubrication of bending part, the number of nozzle opening 4 can be three on oil spout core bar ontology 1
It is a, it both can guarantee uniformly distributed property, while guaranteeing machinability.
U pipe to bend forming process as follows:
During the bending process, globoidal structure end 2 (i.e. core print) enters the position set in copper pipe, and lubricating oil is through fuel transfer system
Make copper pipe in the comprehensive sufficient lubrication of bending point under the restriction of oil transportation channel 3 and 4 structure of nozzle opening to oil transportation channel 3；Copper
Pipe side fits closely the bending point of bend pipe mould and the oil spout core bar support copper pipe in copper pipe, in the two collective effect
Lower that copper pipe is formed U-tube, molding U pipe is detached from oil spout core bar under discharge arm effect, and U pipe bends molding.The present invention improves
Oil spout core bar, suitable for the bending of long U pipe, while being also applied in small U tube bending machine.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of oil spout core bar, which is characterized in that including oil spout core bar ontology (1), which is characterized in that
The oil spout core bar ontology (1) is an integral molding structure, and the end of the oil spout core bar ontology (1) is globoidal structure, copper
In the process of bending, its globoidal structure end (2) of the oil spout core bar ontology (1) protruded into the copper pipe can support the copper to pipe
Bending for pipe is a little U-shaped to guide the copper pipe to be bent into.
2. oil spout core bar according to claim 1, which is characterized in that the end of the oil spout core bar ontology (1) is ellipsoid
Face structure, the ellipsoid structure can support bending a little for the copper pipe.
3. oil spout core bar according to claim 1 or 2, which is characterized in that the oil spout core bar ontology (1) is parallel to it certainly
The outer contour shape in the section of body axis is U-shaped structure.
4. oil spout core bar according to claim 1, which is characterized in that oil spout core bar ontology (1) is internally provided with
Oil transportation channel (3), the oil transportation channel (3) are distributed along the length direction of the oil spout core bar ontology (1)；The oil spout core bar sheet
Close to the globoidal structure end (2) setting nozzle opening (4) on body (1), the nozzle opening (4) is connected with the oil transportation channel (3)
It is logical.
5. oil spout core bar according to claim 4, which is characterized in that the part or all of section edge of the oil transportation channel (3)
It is gradually reduced close to globoidal structure end (2) direction cross-sectional area.
6. oil spout core bar according to claim 4, which is characterized in that be provided with screw thread on nozzle opening (4) inner sidewall.
7. oil spout core bar according to claim 4, which is characterized in that the nozzle opening (4) is along far from the oil transportation channel
(3) its cross-sectional area of direction gradually subtracts greatly.
8. oil spout core bar according to claim 4, which is characterized in that the nozzle opening (4) is close to the globoidal structure end
(2) curved surface is tilted along the direction far from the oil transportation channel (3) to the side of the globoidal structure end (2).
9. oil spout core bar according to claim 4, which is characterized in that the nozzle opening (4) is along the oil spout core bar ontology
(1) circumferential direction is evenly distributed on the oil spout core bar ontology (1).
10. oil spout core bar according to claim 4, which is characterized in that the number of the nozzle opening (4) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344187.1A CN109261766A (en) | 2018-11-12 | 2018-11-12 | Oil injection core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344187.1A CN109261766A (en) | 2018-11-12 | 2018-11-12 | Oil injection core rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109261766A true CN109261766A (en) | 2019-01-25 |
Family
ID=65193287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811344187.1A Withdrawn CN109261766A (en) | 2018-11-12 | 2018-11-12 | Oil injection core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109261766A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3001885U (en) * | 1994-03-10 | 1994-09-06 | エヌケーエンジニアリング株式会社 | Pipe bender |
| JPH07290157A (en) * | 1994-04-25 | 1995-11-07 | Matsushita Refrig Co Ltd | Core bar for bending pipe |
| TW201008653A (en) * | 2008-08-28 | 2010-03-01 | chun-sheng Deng | Fuel injection device exclusively for internal combustion engine |
| CN201436097U (en) * | 2009-07-02 | 2010-04-07 | 广东美的电器股份有限公司 | Spindle for bend pipe formation of metal pipe |
| CN201482843U (en) * | 2009-08-13 | 2010-05-26 | 珠海格力电器股份有限公司 | Core print device for pipe bender |
| CN102305221A (en) * | 2011-08-16 | 2012-01-04 | 周新田 | Application of steam-water direct mixing pressurization mode in heat tracing of oil exploitation |
| CN203803999U (en) * | 2014-04-03 | 2014-09-03 | 广东美的集团芜湖制冷设备有限公司 | Core shaft used in bending of copper pipe for heat exchanger |
| CN104338813A (en) * | 2014-11-06 | 2015-02-11 | 珠海格力电器股份有限公司 | Pipe bending core rod |
| CN209363364U (en) * | 2018-11-12 | 2019-09-10 | 格力电器（石家庄）有限公司 | Oil injection core rod |
-
2018
- 2018-11-12 CN CN201811344187.1A patent/CN109261766A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3001885U (en) * | 1994-03-10 | 1994-09-06 | エヌケーエンジニアリング株式会社 | Pipe bender |
| JPH07290157A (en) * | 1994-04-25 | 1995-11-07 | Matsushita Refrig Co Ltd | Core bar for bending pipe |
| TW201008653A (en) * | 2008-08-28 | 2010-03-01 | chun-sheng Deng | Fuel injection device exclusively for internal combustion engine |
| CN201436097U (en) * | 2009-07-02 | 2010-04-07 | 广东美的电器股份有限公司 | Spindle for bend pipe formation of metal pipe |
| CN201482843U (en) * | 2009-08-13 | 2010-05-26 | 珠海格力电器股份有限公司 | Core print device for pipe bender |
| CN102305221A (en) * | 2011-08-16 | 2012-01-04 | 周新田 | Application of steam-water direct mixing pressurization mode in heat tracing of oil exploitation |
| CN203803999U (en) * | 2014-04-03 | 2014-09-03 | 广东美的集团芜湖制冷设备有限公司 | Core shaft used in bending of copper pipe for heat exchanger |
| CN104338813A (en) * | 2014-11-06 | 2015-02-11 | 珠海格力电器股份有限公司 | Pipe bending core rod |
| CN209363364U (en) * | 2018-11-12 | 2019-09-10 | 格力电器（石家庄）有限公司 | Oil injection core rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |