CN203711669U - Pipe expander and flaring sleeve thereof - Google Patents
Pipe expander and flaring sleeve thereof Download PDFInfo
- Publication number
- CN203711669U CN203711669U CN201420065165.2U CN201420065165U CN203711669U CN 203711669 U CN203711669 U CN 203711669U CN 201420065165 U CN201420065165 U CN 201420065165U CN 203711669 U CN203711669 U CN 203711669U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- flaring
- pipe
- expander
- cylindrical body
- 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 - Lifetime
Links
- 230000007704 transition Effects 0.000 claims abstract description 13
- 230000004323 axial length Effects 0.000 claims description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 16
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 14
- 238000003466 welding Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model discloses a flaring sleeve of electric tube expander, including the horn mouth formed part that is located the front end and the axle sleeve that is located the rear end and is used for being connected with the electric tube expander, and the horn mouth formed part includes: a front end guide part which can extend into the pipe fitting to be flared; the small end of the conical flaring part is connected with the front end guide part, and the conical flaring part is in arc transition connection with the front end guide part; the cylindrical body is connected with the large end of the conical flaring portion in a transition mode through an arc, the radius of the cylindrical body is larger than the diameter of the large end of the conical flaring portion, and the part, extending out of the large end of the conical flaring portion, of the cylindrical body forms a plane extension portion. The flaring sleeve can ensure that a qualified bell mouth can be manufactured, and can effectively prevent the bell mouth from cracking to the straight wall part of a pipe fitting. The utility model also discloses an install telescopic electric tube expander of above-mentioned flaring.
Description
Technical Field
The utility model relates to an air conditioner preparation technical field, more specifically say, relate to a used electric tube expander of heat exchanger of air conditioner in the manufacturing process and electric tube expander's flaring sleeve.
Background
In the production process of the air-conditioning heat exchanger, a flaring process is carried out, wherein the flaring process is to process a bell mouth at the end part of a copper pipe of the air-conditioning heat exchanger, and the bell mouth at the pipe mouth mainly plays a role in supporting welding flux in the subsequent welding process so as to avoid the loss of the welding flux during welding.
The main equipment that uses in the flaring process is the electric tube expander, installs the flaring sleeve on the electric tube expander and carries out the flaring shaping to the copper pipe mouth of pipe, and present flaring sleeve pipe formula structure as an organic whole, and its middle part is the great column connector of diameter to the one end of connector is for being used for carrying out the bellmouth shaping portion of flaring to the copper pipe, and the other end is for being used for the axle sleeve of being connected with the electric tube expander, and bellmouth shaping portion generally includes front end guide part and with the toper flaring portion that front end guide part meets, the main aspects of toper flaring portion are close to the column connector, and the main edges of toper flaring portion with the diameter of column connector is unanimous.
However, the flaring sleeve has the following problems that the edge position of the large end of the conical flaring part on the flaring sleeve is designed according to the length of the copper pipe to be flared, namely according to the design, under the ideal length, the end part of the copper pipe just reaches the edge of the large end of the conical flaring part, so that the bell mouth forming is completed, and therefore, when the actual length of the copper pipe is not deviated from the preset length, a more ideal bell mouth can be manufactured, but in the actual production process, the deviation exists between the length of the copper pipe and the ideal value due to the tolerance generated in the blanking process of the copper pipe or the difference of the shrinkage rate of the copper pipe, so that the copper pipe has the defect of being long or short.
When the copper pipe is shorter than an ideal value, the end part of the copper pipe cannot be sleeved on the large end edge of the conical flaring part, so that the bell mouth is smaller and even cannot form the bell mouth, and the loss of solder is easily caused in the subsequent welding process, and the welding quality is influenced; when the copper pipe is longer than an ideal value, the copper pipe can continue to move along the flaring sleeve, so that the bell mouth is cracked to the straight wall part of the copper pipe, and the phenomenon of insufficient soldering, welding of air holes and even welding leakage can be easily caused in the welding process under the condition.
Therefore, how to ensure that the qualified bell mouth of the pipe fitting is manufactured in the flaring procedure and avoid the bell mouth from cracking to the straight wall part of the pipe fitting is a technical problem which needs to be solved urgently by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a flaring sleeve of electric tube expander to can enough guarantee that the pipe fitting produces qualified horn mouth in the flaring process, can avoid the horn mouth fracture to the straight wall position of pipe fitting again.
Another object of the present invention is to provide a pipe expander with the above flaring sleeve.
In order to achieve the above object, the utility model provides a following technical scheme:
a flare sleeve for a pipe expander, comprising a flare former at a front end and a sleeve at a rear end for connection with the pipe expander, and the flare former comprising:
a front end guide part which can extend into the pipe fitting to be flared;
the small end of the conical flaring part is connected with the front end guide part, and the conical flaring part is in arc transition connection with the front end guide part;
the cylindrical body is connected with the large end of the conical flaring portion in a transition mode through an arc, the radius of the cylindrical body is larger than the diameter of the large end of the conical flaring portion, and the part, extending out of the large end of the conical flaring portion, of the cylindrical body forms a plane extension portion.
Preferably, the end of the front end guide part is also provided with a conical guide surface with a small end facing forwards.
Preferably, the horn mouth formed part be used for with the one end that the axle sleeve links to each other is provided with the radius and is less than the sleeve pipe of the column body, just the cover is equipped with axial length and is less than on the sleeve pipe the sheathed tube elasticity external member, be provided with on the axle sleeve with the suit hole of sleeve pipe adaptation, just the axial depth in suit hole is greater than the sleeve pipe with the difference of elasticity external member axial length.
Preferably, the elastic sleeve is arranged between the shaft sleeve and the bearing.
Preferably, the distance between the end of the sleeve and the bottom of the casing hole is 2mm-3 mm.
Preferably, the elastic sleeve is a spring.
Preferably, the elastic sleeve is a rubber sleeve.
The utility model also discloses a pipe expander, including the flaring sleeve in this pipe expander, and the flaring sleeve is as above-mentioned the flaring sleeve disclosed in arbitrary one.
According to the above technical scheme, the utility model provides an among the flaring sleeve of electric tube expander, the front end is front end guide portion in the horn mouth formed part, through circular arc transitional coupling with front end guide portion for the toper flaring portion, and the tip and the front end guide portion of toper flaring portion are connected, through circular arc transitional coupling with toper flaring portion main aspects for the column body, and the radius of column body is greater than the diameter of toper flaring portion main aspects, and the position that the column body stretches out toper flaring portion main aspects forms plane extension portion.
The large end of the conical flaring part is in transition connection with the plane extending part through an arc, if the tolerance between the end, used for contacting with the flaring sleeve, of the pipe fitting to be flared and an ideal value is lower, namely the end is lower than the ideal height, when the end of the pipe fitting reaches the plane extending part, the plane extending part further extends the end of the pipe fitting, so that the bell mouth forming of the end part of the pipe fitting is ensured, and the condition that the end part of the pipe fitting has no bell mouth after the flaring process is avoided; if the tolerance between the end of the pipe fitting to be flared, which is used for being in contact with the flaring sleeve, and the ideal value is higher, namely the end is higher than the ideal height, the conical flaring portion can ensure the initial state of the bell mouth, the plane extension portion can further expand the longer end of the pipe fitting to enable the pipe fitting to generate a plane turning structure, and two turning points are formed from the plane turning structure to the straight wall part of the pipe fitting, so that the stress at the end part of the pipe fitting is not easy to extend to the straight wall part of the pipe fitting, and the defect that the bell mouth is cracked to the straight wall part of the pipe fitting is avoided.
The utility model discloses in the disclosed electric tube expander because install this kind of flaring sleeve, therefore this electric tube expander also has above-mentioned flaring sleeve's advantage concurrently, no longer gives unnecessary details to this here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a flaring sleeve of a pipe expander provided in an embodiment of the present invention;
fig. 2 is an exploded view of a flare sleeve of a pipe expander provided in an embodiment of the present invention.
Wherein,
1 is a bell mouth forming part, 2 is an elastic sleeve, 3 is a gasket, and 4 is a shaft sleeve;
11 is a tapered guide surface, 12 is a leading end guide portion, 13 is a cylindrical body, 14 is a sleeve, 15 is a tapered flared portion, and 16 is a planar extension portion.
Detailed Description
One of the cores of the utility model is to provide a flaring sleeve of a pipe expander so as to not only ensure that the pipe fitting produces qualified bellmouth in the flaring process, but also avoid the bellmouth to crack to the straight wall position of the pipe fitting.
Another core of the present invention is to provide a tube expander with the above flaring sleeve.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram illustrating an overall structure of a flaring sleeve of a pipe expander according to an embodiment of the present invention, and fig. 2 is an exploded view of the flaring sleeve of the pipe expander according to an embodiment of the present invention.
The embodiment of the utility model provides an in the flaring sleeve of the electric tube expander that provides including the horn mouth formed part 1 that is located the front end and the axle sleeve 4 that is used for being connected with the electric tube expander that is located the rear end, the utility model discloses an one of the core improvement point lies in the improvement to horn mouth formed part 1, and this horn mouth formed part 1 includes: referring to fig. 2, the front end guide portion 12, the tapered flared portion 15 and the cylindrical body 13, the front end guide portion 12 mainly guides the pipe to be flared to the tapered flared portion 15, so that the diameter of the front end guide portion 12 should be smaller than the inner diameter of the pipe to be flared, so that the pipe can be easily and quickly sleeved on the front end guide portion 12, the small end of the tapered flared portion 15 is connected with the front end guide portion 12, and the connection portion between the tapered flared portion 15 and the front end guide portion 12 is in circular arc transition connection, so as to ensure that the end of the pipe smoothly transitions to the tapered flared portion 15, prevent the end of the pipe from bending or locking at the connection portion between the tapered flared portion 15 and the front end guide portion 12, the cylindrical body 13 is connected with the large end of the tapered flared portion 15, and the connection portion transitions through a circular arc, the radius of the cylindrical body 13 is larger than the diameter of the large end of the tapered flared portion 15, so that the portion of the cylindrical body 13 extending out of the large end of the tapered flared portion 15 forms, as shown in fig. 2.
It should be noted that the front end guide portion 12, the tapered flared portion 15 and the cylindrical body 13 mentioned in the above embodiments are all coaxially disposed, and the front end in the above embodiments specifically refers to the end that is first contacted with the end of the pipe during the flaring process, and the rear end is the end opposite to the front end.
The large end of the conical flaring portion 15 is in arc transition connection with the plane extension portion 16, if the tolerance between the end of the pipe to be flared, which is used for being in contact with the flaring sleeve, and an ideal value is lower, namely the end is lower than the ideal height, when the end of the pipe reaches the plane extension portion 16, the plane extension portion 16 further expands the end of the pipe, so that the bell mouth forming of the end of the pipe is ensured, and the condition that the end of the pipe has no bell mouth after the flaring process is avoided; if the tolerance between the end of the pipe to be flared, which is used for contacting the flaring sleeve, and the ideal value is higher, namely the end is higher than the ideal height, the conical flaring portion 15 ensures the initial state of the bell mouth, and the plane extension portion 16 further expands the longer end of the pipe to generate a plane turnover structure, and two turning points are formed from the plane turnover structure to the straight wall part of the pipe, so that the stress at the end of the pipe is not easy to extend to the straight wall part of the pipe, and the defect that the bell mouth is cracked to the straight wall part of the pipe is avoided.
Therefore, the embodiment of the utility model provides an in the flaring sleeve of electric tube expander that provides can enough guarantee to produce qualified horn mouth, can effectively avoid horn mouth fracture to the straight wall position of pipe fitting again.
In order to further optimize the technical solution in the above embodiment, in this embodiment, a tapered guide surface 11 with a small end facing forward is further disposed at the end of the front end guide portion 12, and the disposition of the tapered guide surface 11 will further improve the accuracy of the tube fitting in the front end guide portion 12.
As is well known to those skilled in the art, in the process of flaring the heat exchange tube of the air conditioning heat exchanger, the tube expansion operation is first performed on the tube, which aims to expand the aluminum sheet and the copper tube of the heat exchanger, and then further pressure is applied to complete the preparation of the bell mouth. The flaring sleeve of the currently applied pipe expander is an integrated rigid flaring sleeve, and the sleeve cannot buffer pressure, so that the instantaneous pressure change is overlarge when the pipe expander is in transition from a pipe expanding stage to a bell mouth preparation stage, and the pipe fitting is easy to break.
To this end, the flaring sleeve provided in this embodiment is a split type, as shown in fig. 2, specifically, the flaring sleeve 1 and the shaft sleeve 4 are split, and one end of the flaring sleeve 1, which is used for being connected with the shaft sleeve 4, is provided with a sleeve 14 with a radius smaller than that of the cylindrical body 13, so that a structure similar to a shaft shoulder is formed between the sleeve 14 and the cylindrical body 13, the sleeve 14 is sleeved with an elastic sleeve member 2 with an axial length smaller than that of the sleeve 14, the shaft sleeve 4 is provided with a sleeving hole adapted to the sleeve 14, and the axial depth of the sleeving hole is greater than the difference between the axial lengths of the sleeve 14 and the elastic sleeve member 2.
Since the difference between the axial lengths of the sleeve 14 and the elastic sleeve 2 is the length of the sleeve 14 exposed out of the elastic sleeve 2 after the end of the elastic sleeve 2 abuts against the cylindrical body 13, the sleeve 14 exposed out of the elastic sleeve 2 can be sleeved in the sleeved hole of the shaft sleeve 4, and since the depth of the sleeved hole is greater than the length of the sleeve 14 exposed out of the elastic sleeve 2, the end of the sleeve 14 does not contact with the bottom of the sleeved hole, but has a gap, which is just a buffer gap of the bell-mouth-shaped part 1 relative to the shaft sleeve 4.
Specifically, when preparing the stage transition by the expand tube stage to the horn mouth, great pressure variation will make the compression of elasticity external member 2 in the twinkling of an eye, and horn mouth formed part 1 will remove to axle sleeve 4 this moment, and this great pressure variation in the twinkling of an eye can effectively be cushioned to the fracture of pipe fitting has effectively been avoided.
It is easy to understand that, the distance between the end of the sleeve 14 and the bottom of the sleeve sleeving hole is too large, which easily causes the problem that the connection between the bell-mouth-shaped part 1 and the shaft sleeve 4 is not stable enough, and the distance between the end of the sleeve 14 and the bottom of the sleeve sleeving hole is too small, which easily causes the problem that the pressure changing instantaneously cannot be effectively buffered, so that the distance between the end of the sleeve 14 and the bottom of the sleeve sleeving hole is set to be 2mm-3mm in this embodiment, so as to effectively buffer the pressure changing instantaneously while ensuring the stable connection between the bell-mouth-shaped part 1 and the shaft sleeve 4.
Usually, the elastic sleeve 2 can be selected from a spring or a rubber sleeve, and of course, in order to ensure a longer service life, a person skilled in the art can also use other more durable materials to prepare the elastic sleeve.
For protection of the elastic elements, a gasket 3 may also be provided between the elastic sleeve 2 and the bushing 4, as shown in fig. 1 and 2.
The utility model discloses in install the flaring sleeve among the electric tube expander that provides to the flaring sleeve among this electric tube expander is the flaring sleeve of the electric tube expander disclosed in an above-mentioned arbitrary embodiment.
Because install above-mentioned flaring sleeve pipe in this electric tube expander, therefore this electric tube expander has above-mentioned flaring sleeve pipe's whole advantages concurrently, and this is no longer repeated in this application file.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a flaring sleeve of electric tube expander, is used for axle sleeve (4) be connected with the electric tube expander including the horn mouth formed part (1) that is located the front end and is located the rear end, its characterized in that, horn mouth formed part (1) includes:
a front end guide part (12) which can extend into the pipe fitting to be flared;
a conical flared part (15) with the small end connected with the front end guide part (12), wherein the conical flared part (15) is in arc transition connection with the front end guide part (12);
the cylindrical body (13) is connected with the large end of the conical flared part (15) in a transition mode through an arc, the radius of the cylindrical body (13) is larger than the diameter of the large end of the conical flared part (15), and a plane extension part (16) is formed at the part, extending out of the large end of the conical flared part (15), of the cylindrical body (13).
2. Flaring sleeve for a pipe expander as claimed in claim 1, characterized in that said front guide (12) ends with a conical guide surface (11) with a small end facing forward.
3. Flaring sleeve for a pipe expander according to claim 1, characterized in that the end of the bell-mouth forming part (1) intended to be connected to the sleeve (4) is provided with a sleeve (14) having a smaller radius than the cylindrical body (13), and in that the sleeve (14) is fitted with an elastic sleeve (2) having an axial length smaller than the sleeve (14), and in that the sleeve (4) is provided with a fitting hole adapted to the sleeve (14), and in that the axial depth of the fitting hole is greater than the difference between the axial lengths of the sleeve (14) and the elastic sleeve (2).
4. Flaring sleeve for a pipe expander as claimed in claim 3, characterized in that it further comprises a gasket (3) arranged between said elastic sleeve (2) and said sleeve (4).
5. Flaring sleeve for a pipe expander as claimed in claim 4, characterized in that the distance between the end of the sleeve (14) and the bottom of the nested hole is between 2mm and 3 mm.
6. Flaring sleeve for a pipe expander as claimed in claim 3, characterized in that said elastic sleeve (2) is a spring.
7. Flaring sleeve for a pipe expander as claimed in claim 3, characterized in that said elastic sleeve (2) is a rubber sleeve.
8. A pipe expander including a flaring sleeve, wherein said flaring sleeve is a flaring sleeve of a pipe expander as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065165.2U CN203711669U (en) | 2014-02-13 | 2014-02-13 | Pipe expander and flaring sleeve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065165.2U CN203711669U (en) | 2014-02-13 | 2014-02-13 | Pipe expander and flaring sleeve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203711669U true CN203711669U (en) | 2014-07-16 |
Family
ID=51150869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065165.2U Expired - Lifetime CN203711669U (en) | 2014-02-13 | 2014-02-13 | Pipe expander and flaring sleeve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203711669U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741466A (en) * | 2015-04-07 | 2015-07-01 | 江苏仓环铜业股份有限公司 | Processing equipment for horn mouth of metal tube |
| CN104841786A (en) * | 2014-02-13 | 2015-08-19 | 珠海格力电器股份有限公司 | Pipe expander and flaring sleeve thereof |
| CN106270229A (en) * | 2015-05-15 | 2017-01-04 | 天津市久盛通达科技有限公司 | Spigot-and-socket steel pipe rolling pipe-expanding machine |
-
2014
- 2014-02-13 CN CN201420065165.2U patent/CN203711669U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841786A (en) * | 2014-02-13 | 2015-08-19 | 珠海格力电器股份有限公司 | Pipe expander and flaring sleeve thereof |
| CN104741466A (en) * | 2015-04-07 | 2015-07-01 | 江苏仓环铜业股份有限公司 | Processing equipment for horn mouth of metal tube |
| CN106270229A (en) * | 2015-05-15 | 2017-01-04 | 天津市久盛通达科技有限公司 | Spigot-and-socket steel pipe rolling pipe-expanding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |