CN106915070B - A kind of portable pipe expander - Google Patents
A kind of portable pipe expander Download PDFInfo
- Publication number
- CN106915070B CN106915070B CN201710039054.2A CN201710039054A CN106915070B CN 106915070 B CN106915070 B CN 106915070B CN 201710039054 A CN201710039054 A CN 201710039054A CN 106915070 B CN106915070 B CN 106915070B
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- China
- Prior art keywords
- expander
- spanner
- pipe fitting
- pipe
- clamp system
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of portable pipe expander, including main body, heating device and expander mold；The main body is gun type of gas burner, and hole expansion die is arranged on the heating, and is fixed on the top of main body；The pipe expander further includes the guide holder being arranged in main body, pipe fitting clamp system and spanner；A pair of of guiding polished rod is provided between guide holder and heating device, pipe fitting clamp system is arranged on the sliding block on guiding polished rod；Spanner is fixed in the shaft of body interior, and the inner end of spanner is abutted against by the lower part of pressing device and pipe fitting clamp system；Pipe fitting clamp system will be clamped to expander, and the inner end of spanner pushes the Forward of pipe fitting clamp system, and the end to expander is pressed into the hole expansion die on heating device.Portable pipe expander provided by the invention, structurally reasonable for the expansion of plug-in type installation pipe fitting internal diameter, it is convenient to operate, and is conducive to the attaching type sealing fastening of pipe fitting, and the present invention has wide applicability and promotional value in engineering construction.
Description
Technical field
The present invention relates to a kind of pipe expander more particularly to a kind of portable pipe expanders.
Background technique
Pacify in similar PFA pipe fitting and tubing in use, carrying out attaching type sealing with pipe fitting after needing to expand pipe end
Dress.For example, in chemical-mechanical planarization (CMP) equipment, PFA pipe fitting and tubing supply gas and liquid are usually selected.
Pipe expander is that one end of tubing key is squeezed widened device, the opening of pipe fitting can be made to strut in this way, with
Facilitate the interconnection of pipe fitting.
In existing pipe expander, generally it is arranged each other by two cone clamping parts, multiple expanding plates are around conical surface diameter
To arrangement, the distance that user shortens between two folders makes the conical surface that expanding plate be pushed to move to the outer direction, completes the interior of tube body
Wall supports outward；Meanwhile there is also a kind of pipe expander, by being set to the holding rod for operation of ontology, holding is utilized
It drives a taper expander punching pin to move forward, and forces the movement of expander module progress expander.
Existing pipe expander general structure is more complicated, needs individually to heat to pipe fitting end, then individually be expanded
Hole operation, it is cumbersome, influence working efficiency.
Summary of the invention
The present invention be directed to above-mentioned technical problems, provide a kind of portable pipe expander, install tracheae for plug-in type
Or the expansion of water pipe front end bore, structurally reasonable, it is convenient to operate, and is conducive to the attaching type sealing fastening of pipe fitting, the application
The pipe expander of offer has wide applicability and promotional value in engineering construction.
Technical solution of the present invention
In order to solve the above technical problems, a kind of portable pipe expander provided by the invention comprising main body, heating device
And expander mold.
The main body is gun type of gas burner, and pipe expander is arranged on the heating, and is fixed on the top of main body；The expansion
Pipe device further includes the guide holder being arranged in main body, pipe fitting clamp system, pressing device and spanner；Guide holder and heating device
It is arranged in parallel with a pair of of guiding polished rod, pipe fitting clamp system is arranged on the sliding block on guiding polished rod；Spanner is fixed in main body
In the shaft in portion, the inner end of spanner passes through the lower contacts of pressing device and pipe fitting clamp system；Pipe fitting clamp system will be wait expand
Pipe clamp is tight, pulls the outer end of spanner, and the inner end of spanner pushes the Forward of pipe fitting clamp system, and the end to expander is pressed into heating dress
The expander mold set.
Further, the pipe fitting clamp system includes a pair of of electromagnetism V-block, and reset spring, reset spring setting is one
To between electromagnetism V-block；The lower end of the sliding block is provided with sliding rail, and electromagnetism V-block is arranged on the slide rail；Electromagnetism V-block is along sliding
Sliding rail on block moves left and right；The effect of reset spring between electromagnetism V-block: in electromagnetism V-block power loss, by electromagnetism V-type
Block separation.
Further, the pressing device includes spanner pushing block, spanner spring, spring cavity and position-limited rack；Spring cavity
And a pair of of position-limited rack is fixed in main body, position-limited rack is located at the side of spring cavity, and limit sliding chutes are formed on the bottom of position-limited rack；It pulls
Hand spring and spanner pushing block assemble, and pass through spring cavity, are limited by position-limited rack；Spanner pushing block includes straight bar section and flat plate section,
Spanner spring is mounted on the straight bar section of spanner pushing block, and passes through spring cavity, and the flat plate section of spanner pushing block is arranged in limit sliding chutes
It is interior.The inner end that spanner may be implemented in pressing device steadily pushes pipe fitting clamp system, makes steadily to move forward to expander, to guarantee expander
Quality.
Further, the pressing device further includes contact plate, insulation sleeve and spanner wheel, and contact plate is fixed on pipe fitting clamping
The lower part of mechanism, wedge groove is provided on contact plate, and insulation is set on the straight bar section of spanner pushing block；Spanner wheel is located at spanner
Inner end, spanner wheel are abutted against with spanner pushing block.
Further, the portable pipe expander further includes expander operation warning system, expander operation warning system by
Warning lamp and connection line composition, warning lamp show the job state of portable pipe expander.
Further, the wedge groove is the inclined square hole in lower end surface, and the straight bar section of spanner pushing block passes through on contact plate
Wedge groove, the clutch of straight bar section and wedge groove, formed expander operation warning system connection line on-off.Straight bar section and wedge shape
Slot mutually from when, the connection line of expander operation warning system disconnects；When straight bar section and wedge groove contact, expander operation warning system
Connection line closure.
Further, the pipe fitting clamp system clamps the expander mold on the central axis and heating device when expander
Central axis, the purpose designed in this way are pressed into expander mold to expander straight, are conducive to expand under spanner induced effect
Pipe uniformly, guarantees expander quality.
Further, the expander mold removably it is fixed on the heating, the size of expander mold with to
Expander is equipped with, to expand the applicability of pipe expander.
Further, the portable pipe expander further includes spanner supporting plate, and spanner supporting plate is hinged on the lower part of main body, pulls
Hand supporting plate can block the lower end of spanner, keep the compressive state of spanner spring, that is, guarantee end and heating to expander
The time of contact of expander mold ensures reaming quality.
Further, the portable pipe expander further includes system for detecting temperature, and system for detecting temperature is by temperature switch
And connection line composition, the inside of heating device is arranged in temperature switch, for detecting the temperature of heating device；Temperature detection system
Heater switch, warning lamp are also connected in the connection line of system.Temperature switch can with the heated condition of effective monitoring heating device,
The portable pipe expander of alarm has reached setting temperature, and has the function of working condition prompting.
Invention the utility model has the advantages that
A kind of portable pipe expander that invention provides, for plug-in type installation tracheae or water pipe front inner diameter
Expansion, structurally reasonable, it is convenient to operate, and is conducive to the attaching type sealing fastening of pipe fitting, pipe expander provided by the present application exists
There is wide applicability and promotional value in engineering construction.
Detailed description of the invention
By detailed description made by conjunction with the following drawings, the advantages of invention, will be apparent and be easier
Understand, these attached drawings are only schematical, are not intended to limit invention, in which:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is perspective view of the invention；
Fig. 3 is the clamping device of the present invention and the installation diagram of pressing device；
Fig. 4 is the structural schematic diagram of the spanner pushing block of the present invention；
Fig. 5 is the structural schematic diagram of the contact plate of the present invention；
Fig. 6 is the partial enlarged view of Fig. 1；
Fig. 7 is the connection figure of the expander operation warning system of the present invention；
Fig. 8 is the connection figure of the system for detecting temperature of the present invention.
In attached drawing, component representated by each label is as follows:
1. main body；2. spanner；3. pressing device；4. heating device；5. expander mold；6. spanner spring；7. being oriented to polished rod；
8. sliding block；9. reset spring；10. electromagnetism V-block；11. guide holder；12. to expander；13. heater switch；14. electromagnetic switch；
15. spanner supporting plate；16. temperature switch；17. warning lamp；18. spring cavity；19. position-limited rack；20. contact plate；21. spanner pushes away
Block；22. spanner wheel；23. insulation sleeve；24. straight bar section；25. flat plate section；26. wedge groove.
Specific embodiment
A kind of portable pipe expander of the invention is described in detail with attached drawing combined with specific embodiments below.
The embodiment recorded herein is specific specific embodiment of the invention, for illustrating design of the invention,
Be it is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also based on the claim of this application book and specification disclosure of that using aobvious and
The other technical solutions being clear to, these technical solutions include using any obvious to making for the embodiment recorded herein
The technical solution of substitutions and modifications.
The attached drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each section
And its correlation.It note that for the ease of clearly showing the structure of each component of the embodiment of the present invention, identical reference
Label is for indicating identical part.
Fig. 1 is a kind of structural schematic diagram of portable pipe expander of the application comprising main body 1, heating device 4 and expander
Mold 5.
The main body 1 is gun type of gas burner, and expander mold 5 is arranged on heating device 4, and is fixed on the top of main body 1；Institute
Stating pipe expander further includes guide holder 11, pipe fitting clamp system, pressing device 3 and the spanner 2 of setting on the body 1；Guide holder
A pair of of guiding polished rod 7 is arranged in parallel between 11 and heating device 4, the sliding block 8 on guiding polished rod 7 is arranged in pipe fitting clamp system
On；Spanner 2 is fixed in the shaft inside main body 1, and the inner end of spanner 2 passes through the lower part of pressing device 3 and pipe fitting clamp system
It abuts against；Pipe fitting clamp system will be clamped to expander 12, pull the outer end of spanner 2, and the inner end of spanner 2 pushes pipe fitting clamp system
End to expander 12 is pressed into the expander mold 5 on heating device 4 by Forward.
A kind of perspective view of portable pipe expander, as shown in Figure 2.Pipe fitting clamp system is clamping in when expander 12
The central axis of expander mold 5 in mandrel and heating device 4 guarantees that expander mold 5 can be pressed into straight to expander 12, has
It is uniform conducive to expander, guarantee expander quality.
Fig. 3 is the clamping device of the present invention and the installation diagram of pressing device, and pipe fitting clamp system includes a pair of of electromagnetism V-block
10, reset spring 9, reset spring 9 is arranged between a pair of of electromagnetism V-block 10；The lower end of the sliding block 8 is provided with sliding rail, electricity
Magnetic V-block 10 is arranged on the slide rail.Sliding rail of the electromagnetism V-block 10 on sliding block moves left and right, and can be adapted for different rulers in this way
Very little pipe fitting；The effect of reset spring 9 between electromagnetism V-block 10: in electromagnetism 10 power loss of V-block, electromagnetism V-block 10 is divided
From.
The pressing device 3 includes spanner pushing block 21, spanner spring 6, spring cavity 18 and position-limited rack 19；Spring cavity 18
And a pair of of position-limited rack 19 is fixed on the body 1, position-limited rack 19 is located at the side of spring cavity 18, and limit is formed on the bottom of position-limited rack 19
Position sliding slot；Spanner spring 6 and spanner pushing block 21 assemble, and pass through spring cavity 18, are limited by position-limited rack 19.
Fig. 4 is the structural schematic diagram of the spanner pushing block of the present invention comprising straight bar section 24 and flat plate section 25, spanner spring 6
It is mounted on the straight bar section 24 of spanner pushing block 21, and passes through spring cavity 18, the setting of flat plate section 25 of spanner pushing block 21 is slided in limit
In slot.
The pressing device 3 further includes contact plate 20 and insulation sleeve 23, and contact plate 20 is fixed under pipe fitting clamp system
Portion, Fig. 5 are the structural schematic diagrams of the contact plate of the present invention, and wedge groove 26 is provided on contact plate 20, and the setting of insulation sleeve 23 is being pulled
The straight bar section 24(of hand push block 21 is as shown in Figure 6).
The portable pipe expander further includes expander operation warning system, as shown in Figure 7.Expander operation warning system by
Warning lamp 17 and connection line composition, warning lamp 17 show the job state of portable pipe expander.Under the wedge groove 26 is
The square hole of end slope, the straight bar section 24 of spanner pushing block 21 pass through the wedge groove 26 on contact plate 20, straight bar section 24 and wedge shape
The clutch of slot 26 forms the on-off of expander operation warning system.
Spanner 2 pushes spanner pushing block 21 to move forward, and compresses spanner spring 6, the straight bar section 24 and contact plate 20 of spanner pushing block 21
On wedge groove 26 contact, the conducting of the connection line of expander operation warning system；Straight bar section 24 and 26 phase of wedge groove from when, expander
The connection line of operation warning system disconnects, and warning lamp 17 is displayed in red, as shown in Figure 6；Straight bar section 24 is contacted with wedge groove 26
When, the closure of expander operation warning system, warning lamp 17 shows green, and the portable pipe expander in surface is just in expander operation.
The pressing device 3 further includes spanner wheel 22, and the inner end of spanner 2, spanner wheel 22 and spanner pushing block 21 is arranged in
It abuts against, keeps compression movement more steady.
When work, electromagnetic switch 14 is pressed, pipe fitting clamp system will be clamped to expander 12；Heater switch 13 is pressed, is heated
Device 4 is heated to expander mold 5, is heated to certain time；The outer end of spanner 2 is pulled, the spanner wheel 22 on the inner end of spanner 2 pushes away
Dynamic pressing device 3 moves forward, and the end to expander 12 is pressed into the expander mold 5 on heating device 4；It is after being kept for a few minutes, i.e., complete
At tube enlarging operation.
The portable pipe expander further includes spanner supporting plate 15, and spanner supporting plate 15 is fixed on the lower part of main body 1, spanner branch
Plate can block the lower end of spanner, keep the compressive state of spanner spring, that is, guarantee to the end of expander and the expander of heating
The time of contact of mold ensures reaming quality.
The portable pipe expander further includes system for detecting temperature, as shown in Figure 8.System for detecting temperature is by temperature switch
16 and connection line composition, the inside of heating device 4 is arranged in temperature switch 16, for detecting the temperature of heating device 4；Temperature
Heater switch 13, warning lamp 17 are also connected in the connection line of detection system.Operator presses heater switch 13, heating dress
It sets 4 to begin to warm up, when temperature rises to setting temperature, temperature switch 16 is attracted, and 17 place connection line of warning lamp is connected, warning
Lamp 17 is opened.I.e. temperature switch 16 can be had reached with the heated condition of effective monitoring heating device, the portable pipe expander of alarm
Temperature is set, and operator's pipe expander can be reminded in running order.
Now in conjunction with embodiment shown in FIG. 1, a kind of operating procedure of portable pipe expander described herein is illustrated:
Firstly, will be placed between a pair of of electromagnetism V-block 10 to expander 12 along guide holder 11；
Then, electromagnetic switch 14 is pressed, electromagnetism V-block 10 moves inward under electromagnetic switch effect along sliding rail, will be to
Expander 12 clamps；
Then, heater switch 13 is pressed, starts heating device 4, heats expander mold 5 connected to it；
Then, spanner 2 is pulled, the spanner wheel 22 on the inner end of spanner 2 will push pressing device movement, in this way, 8 edge of sliding block
Parallel guiding polished rod 7 steadily moves forward, and drives and moves forward to expander 12, and the end to expander 12 is pressed into expander mold 5；This
When, the straight bar section 24 of spanner pushing block 21 is contacted with the wedge groove 26 on contact plate 20, the closure of expander operation warning system, warning
Lamp 17 shows green, and portable pipe expander starts expander；
Then, spanner supporting plate 15 is loaded on to the lower end of spanner 2, makes the end to expander 12 and the expander mold 5 of heating
Contact a period of time；
Then, it is kept for a few minutes to the end indentation expander mold 5 of expander 12, that is, completes the reaming of pipe fitting, at this time main body 1
On warning lamp 17 flash.Operator removes spanner supporting plate 15 from the lower end of spanner 2, under the action of spanner spring 6, pulls
Hand push block 21 moves back, and the straight bar section 24 of spanner pushing block 21 is separated with the wedge groove 26 on contact plate 20, expander operation warning system
Connection line disconnect, warning lamp 17 is displayed in red, and portable pipe expander stops expander.
Finally, pressing electromagnetic switch 14,10 power down of electromagnetism V-block is disengaged to expander 12 from electromagnetism V-block 10, operator
Member removes the spool for completing tube enlarging operation.
A kind of portable pipe expander provided by the invention installs the expansion of tracheae or water pipe front inner diameter for plug-in type
Greatly, structurally reasonable, it is convenient to operate, and is conducive to the attaching type sealing fastening of pipe fitting, pipe expander provided by the present application is in engineering
There is wide applicability and promotional value in construction.
The present invention is not limited to the above-described embodiments, anyone can obtain other various forms under the inspiration of the present invention
Product, it is all that there is technical side identical or similar to the present application however, make any variation in its shape or structure
Case is within the scope of the present invention.
Claims (10)
1. a kind of portable pipe expander, including main body (1), heating device (4) and expander mold (5)；It is characterized in that, described
Main body (1) is gun type of gas burner, and expander mold (5) is arranged on heating device (4), and is fixed on the top of main body (1)；The expansion
Pipe device further includes guide holder (11), pipe fitting clamp system, pressing device (3) and the spanner (2) being arranged on main body (1)；It leads
To a pair of of guiding polished rod (7) is arranged in parallel between seat (11) and heating device (4), the setting of pipe fitting clamp system is in guiding polished rod
(7) on the sliding block (8) on；Spanner (2) is fixed in the internal shaft of main body (1), and the inner end of spanner (2) passes through pressing device
(3) lower part with pipe fitting clamp system abuts against；Pipe fitting clamp system will be clamped to expander (12), pull the outer end of spanner (2),
The inner end of spanner (2) pushes the Forward of pipe fitting clamp system, and the end to expander (12) is pressed into the expanding die on heating device (4)
Have (5).
2. portable pipe expander according to claim 1, which is characterized in that the pipe fitting clamp system includes a pair of of electromagnetism
V-block (10), reset spring (9), reset spring (9) are arranged between a pair of of electromagnetism V-block (10)；Under the sliding block (8)
End is provided with sliding rail, and electromagnetism V-block (10) is arranged on the slide rail.
3. portable pipe expander according to claim 1, which is characterized in that the pressing device (3) includes spanner pushing block
(21), spanner spring (6), spring cavity (18) and position-limited rack (19)；Spring cavity (18) and a pair of of position-limited rack (19) are fixed on
In main body (1), position-limited rack (19) is located at the side of spring cavity (18), and limit sliding chutes are formed on the bottom of position-limited rack (19)；Spanner
Spring (6) and spanner pushing block (21) are assembled, and pass through spring cavity (18), are limited by position-limited rack (19)；Spanner pushing block (21) packet
Straight bar section (24) and flat plate section (25) are included, spanner spring (6) is mounted on the straight bar section (24) of spanner pushing block (21), and passes through spring
The flat plate section (25) of cavity (18), spanner pushing block (21) is arranged in limit sliding chutes.
4. portable pipe expander according to claim 3, which is characterized in that the pressing device (3) further includes contact plate
(20), insulation sleeve (23) and spanner wheel (22), contact plate (20) are fixed on the lower part of pipe fitting clamp system, and contact plate is set on (20)
It is equipped with wedge groove (26), the straight bar section (24) in spanner pushing block (21) is arranged in insulation sleeve (23)；Spanner wheel (22) is located at spanner (2)
Inner end, spanner wheel (22) abuts against with spanner pushing block (21).
5. portable pipe expander according to claim 1, which is characterized in that the portable pipe expander further includes expander
Operation warning system, expander operation warning system are made of warning lamp one and connection line, and warning lamp one shows portable expander
The job state of device.
6. portable pipe expander according to claim 4, which is characterized in that the wedge groove (26) is that lower end surface is inclined
Square hole, the straight bar section (24) of spanner pushing block (21) pass through the wedge groove (26) on contact plate (20), straight bar section (24) and wedge shape
The clutch of slot (26) forms the on-off of expander operation warning system connection line.
7. portable pipe expander according to claim 1, which is characterized in that the pipe fitting clamp system clamps when expander
Central axis and heating device (4) on expander mold (5) central axis.
8. portable pipe expander according to claim 1, which is characterized in that the expander mold (5) is removably
It is fixed on heating device (4), the size of expander mold (5) is equipped with to expander (12).
9. portable pipe expander according to claim 1, which is characterized in that the portable pipe expander further includes spanner
Supporting plate (15), spanner supporting plate (15) are hinged on the lower part of main body (1).
10. portable pipe expander according to claim 1, which is characterized in that the portable pipe expander further includes temperature
Detection system is spent, system for detecting temperature is made of temperature switch (16) and connection line, and temperature switch (16) setting is filled in heating
The inside for setting (4), for detecting the temperature of heating device (4)；Heating is also connected in the connection line of system for detecting temperature to open
Close (13), warning lamp two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039054.2A CN106915070B (en) | 2017-01-19 | 2017-01-19 | A kind of portable pipe expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039054.2A CN106915070B (en) | 2017-01-19 | 2017-01-19 | A kind of portable pipe expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106915070A CN106915070A (en) | 2017-07-04 |
| CN106915070B true CN106915070B (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710039054.2A Active CN106915070B (en) | 2017-01-19 | 2017-01-19 | A kind of portable pipe expander |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108995195B (en) * | 2018-06-20 | 2020-07-28 | 五冶集团上海有限公司 | Portable full-automatic cable wall bushing bell mouth forming machine |
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| CN202655495U (en) * | 2012-05-15 | 2013-01-09 | 润联(天津)五金工具有限公司 | Tube expander |
| JP2013163211A (en) * | 2012-02-13 | 2013-08-22 | Toyo Densen Kk | Flare forming apparatus |
| CN103272956A (en) * | 2013-06-25 | 2013-09-04 | 河北亚大汽车塑料制品有限公司 | Flexible pipe end heating pipe-expanding machine, integrated device and heating pipe-expanding method |
| CN203381187U (en) * | 2013-06-24 | 2014-01-08 | 东华大学 | Reamer for machining tapered hole of PC (polycarbonate) protection sleeve of osteopathic medical device |
| CN205021494U (en) * | 2015-07-07 | 2016-02-10 | 诸暨市艾拓五金工具有限公司 | Smooth clencher with expand tube and taut function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201532699A (en) * | 2013-10-30 | 2015-09-01 | American Grease Stick Co | Hand held flaring tool |
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2017
- 2017-01-19 CN CN201710039054.2A patent/CN106915070B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013163211A (en) * | 2012-02-13 | 2013-08-22 | Toyo Densen Kk | Flare forming apparatus |
| CN202655495U (en) * | 2012-05-15 | 2013-01-09 | 润联(天津)五金工具有限公司 | Tube expander |
| CN203381187U (en) * | 2013-06-24 | 2014-01-08 | 东华大学 | Reamer for machining tapered hole of PC (polycarbonate) protection sleeve of osteopathic medical device |
| CN103272956A (en) * | 2013-06-25 | 2013-09-04 | 河北亚大汽车塑料制品有限公司 | Flexible pipe end heating pipe-expanding machine, integrated device and heating pipe-expanding method |
| CN205021494U (en) * | 2015-07-07 | 2016-02-10 | 诸暨市艾拓五金工具有限公司 | Smooth clencher with expand tube and taut function |
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| Publication number | Publication date |
|---|---|
| CN106915070A (en) | 2017-07-04 |
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