CN107755553A - A kind of pipe expander - Google Patents
A kind of pipe expander Download PDFInfo
- Publication number
- CN107755553A CN107755553A CN201610697997.XA CN201610697997A CN107755553A CN 107755553 A CN107755553 A CN 107755553A CN 201610697997 A CN201610697997 A CN 201610697997A CN 107755553 A CN107755553 A CN 107755553A
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- CN
- China
- Prior art keywords
- piston rod
- cylinder
- rod
- piston
- expander
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- 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.)
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Classifications
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- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The present invention relates to a kind of pipe expander, and it includes expander mold mechanism and actuating unit, and actuating unit includes oil cylinder and piston rod；The first stopping means or the bottom of piston rod that the bottom that the outer wall of the lower cylinder cap of oil cylinder is provided with limitation piston rod moves downward are provided with the second stopping means that the bottom of limitation piston rod is moved upwards.The pipe expander of the present invention, machinery positioning is realized using simple mechanical structure, compared with the photoelectricity positioning of prior art, the terminal that piston rod moves downward or upward can more accurately be determined, realize the positioning of piston rod, so as to reliably hold expander size, especially essence expands size, and fluctuating error scope is in 0.05mm.
Description
Technical field
The present invention relates to a kind of mechanical manufacturing tools, more particularly to a kind of pipe expander.
Background technology
The effect of pipe expander is that the less thin pipe of diameter is processed into the thick pipe being relatively large in diameter, or will be close to cylinder
The housing expander of shape is shaped to cylindrical shape, such as the housing of compressor is shaped into cylindrical shape.
In general, pipe expander mainly includes expander mold mechanism and actuating unit, and wherein actuating unit can use liquid
Pressure power mechanism.Hydraulic power mechanism generally comprises oil cylinder and the piston rod of piston movement is done in oil cylinder, and piston rod has
The shaft portion of oil cylinder is stretched out, the shaft portion is connected with expander mold mechanism so as to drive the motion of mould, referring to middle promulgated by the State Council
Bright patent document CN202037265U.
On the spacing of piston rod movement, generally use photoelectric positioning apparatus in the prior art, but photoelectricity positioning and oil
Laminate section, which exists, coordinates error, so as to cause each expander size can not be constant, especially at " essence expands ", and the stabilization of size
Property it is bad, such as be likely to result in expander size fluctuation it is very big, worst error reaches 0.2mm, but require to need will be by mistake for standard
Difference control is between 0.05mm.
Therefore, can be accurately spacing, it is necessary to a kind of pipe expander, control the exercise end of piston rod.
The content of the invention
In order to solve the above technical problems, one aspect of the present invention provides a kind of pipe expander, it include expander mold mechanism and
Actuating unit, the actuating unit include：Oil cylinder, it include cylinder body, the closing cylinder body upper end upper cylinder cover and
Close the lower cylinder cap of the bottom of the cylinder body；With, piston rod, it includes piston portion in the cylinder body, upper end
Pass the upper end link rod part of the upper cylinder cover and lower end passes the bottom of the lower cylinder cap；The upper end link rod part and the expansion
Pipe mold mechanism connects；The direction of motion of the piston portion is to be moved towards the lower cylinder cap；Set on the outer wall of the lower cylinder cap
The first stopping means that the bottom of the restricted piston rod moves downward.
Preferably, first stopping means includes：Positioning pedestal, it is fixedly installed on the outer wall of the lower cylinder cap,
And with the hollow cylinder for housing the piston-rod lower end portion；First adjusting screw rod, it is located at the bottom of the hollow cylinder,
And coordinate with the inner thread of the hollow cylinder so as to realize on inwall of first adjusting screw rod along the hollow cylinder
Lower movement；With the first locking nut, it is removable installed in the bottom of the hollow cylinder so that the first regulation spiral shell
Bar is relatively fixed with the hollow cylinder；When the piston rod is in spacing state, the bottom of the piston rod is supported downwards
It is held in first adjusting screw rod.
Preferably, the pipe expander includes the fixed positioning pedestal and the lower cylinder cap and fixes the lower cylinder simultaneously
The fastener of lid and the cylinder body.
Another aspect of the present invention provides a kind of pipe expander, and it includes expander mold mechanism and actuating unit, the power
Mechanism includes：Oil cylinder, it include cylinder body, the closing cylinder body upper end upper cylinder cover and the closing cylinder body under
The lower cylinder cap of end；With, piston rod, it includes piston portion in the cylinder body, upper end passes the upper of the upper cylinder cover
End link portion and lower end pass the bottom of the lower cylinder cap；The upper end link rod part is connected with the expander mold mechanism；Institute
The direction of motion for stating piston portion is to be moved towards the upper cylinder cover；The bottom of the piston rod, which is provided with, limits the piston rod
The second stopping means that bottom is moved upwards.
Preferably, second stopping means includes the second adjusting screw rod, the second locking nut and limiting stand；The piston
The screwed hole for housing second adjusting screw rod is provided with the bottom of bar, second adjusting screw rod coordinates with the screwed hole
So as to realize that second adjusting screw rod moves up and down along the screwed hole；Second locking nut its be removable installed in
The bottom of the piston rod so that the bottom of second adjusting screw rod and the piston rod is relatively fixed；It is described spacing
Platform is located at the outside in the piston-rod lower end portion, and is set with being relatively fixed with the piston rod；When the piston rod is in limit
During the state of position, the limiting stand is held in the lower cylinder cap upwards.
Preferably, the limiting stand is located at the top of second locking nut and is supported on second locking nut.
Preferably, periphery wall of the limiting stand around the piston-rod lower end portion is set.
The pipe expander of the present invention, machinery positioning is realized using simple mechanical structure, is positioned with the photoelectricity of prior art
Compare, can more accurately determine the terminal that piston rod moves downward or upward, realize the positioning of piston rod, so as to reliably
Expander size is held, especially essence expands size, and fluctuating error scope is in 0.05mm.
Brief description of the drawings
Fig. 1 is the part-structure schematic diagram of the pipe expander of embodiment 1；
Fig. 2 is the part-structure schematic diagram of the pipe expander of embodiment 2.
Embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally
Conversion is all contained in protection scope of the present invention.
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical is attached in figure
Icon note represents same or similar structure, thus will omit repetition thereof.
Described feature, structure or characteristic can be incorporated in one or more embodiments in any suitable manner
In.In the following description, there is provided many details fully understand so as to provide to embodiments of the present invention.However,
One of ordinary skill in the art would recognize that without one or more in specific detail, or using other methods, constituent element, material
Material etc., can also put into practice technical scheme.In some cases, be not shown in detail or describe known features, material or
Person's operation is fuzzy of the invention to avoid.
Embodiment 1
It is the part-structure schematic diagram of the pipe expander of the embodiment of the present invention 1 as shown in Figure 1, the pipe expander includes expander mould
Mechanism (not shown) and actuating unit 100, as shown in figure 1, actuating unit 100 includes oil cylinder 10 and piston rod 20.
Wherein, oil cylinder 10 includes cylinder body 11, the upper cylinder cover 12 for the upper end for closing cylinder body 11 and closing cylinder body 11
Bottom lower cylinder cap 13.
Piston rod 20 passes the upper end of upper cylinder cover 12 including the piston portion (not shown) in cylinder body 11, upwards
Link rod part 22 and the bottom 23 for passing lower cylinder cap 13 downwards.Wherein, upper end link rod part 22 is connected with expander mold mechanism, so as to
Piston rod 20 drives expander mold movement by upper end link rod part 22.
In the present embodiment, the direction of motion of piston portion is moves towards lower cylinder cap 13, i.e. the pipe expander of the present embodiment
Piston rod 20 is the piston rod of pulldown, and its direction of motion in cylinder body 11 is directed downwardly.In the present embodiment, piston portion
It can originate, move downward from the inwall of upper cylinder cover 12.
In the present embodiment, the outer wall of lower cylinder cap 13 be provided with limitation piston rod 20 bottom 23 move downward first
Stopping means 30.
First stopping means 30 includes positioning pedestal 31, the first adjusting screw rod 32 and the first locking nut 33.
Wherein, positioning pedestal 31 is fixedly installed on the outer wall of lower cylinder cap 13, and with collecting piston rod 20 bottom 23
Hollow cylinder 311.
First adjusting screw rod 32, it is located at the bottom of hollow cylinder 311, and matches somebody with somebody with the inner thread of hollow cylinder 311
Close so as to realize that inwall of first adjusting screw rod 32 along hollow cylinder 311 moves up and down.
First locking nut 33, it is removable installed in the bottom of hollow cylinder 311 so that the first adjusting screw rod 32
It is relatively fixed with hollow cylinder 311, i.e. the first locking nut 33 is to be used to the first adjusting screw rod 32 being fixed on hollow cylinder 311
On.
In actual mechanical process, first determine that the distance that piston rod 20 moves downward (has also determined that the first adjusting screw rod
32 position), tune the first adjusting screw rod 32 so that inwall of first adjusting screw rod 32 along hollow cylinder 311 move up and down to
Identified position, then first adjusting screw rod 32 is fixed in hollow cylinder 311 with the first locking nut 33.Work as piston rod
20 move downward until when the bottom 23 of piston rod 20 is held in the first adjusting screw rod 33 downwards, and piston rod 20 is in spacing shape
State, it can not be further continued for moving downward, so that it is determined that the terminal that piston rod 20 moves downward.
The pipe expander of embodiment 1, machinery positioning is realized using simple mechanical structure, positioned with the photoelectricity of prior art
Compare, can more accurately determine the positioning for moving downward terminal, realizing piston rod 20 of piston rod 20, so as to reliably hold
Expander size, especially essence expand size, and fluctuating error scope is in 0.05mm.
In the present embodiment, pipe expander include stationary positioned pedestal 31 and lower cylinder cap 13 and simultaneously fixed lower cylinder cap 13 with
The fastener of cylinder body 11.I.e. using same harness fastener f while stationary positioned pedestal 31, lower cylinder cap 13 and cylinder body 11.
In existing product, lower cylinder cap 13 is provided with a circle mounting hole, and fastener coordinates with mounting hole realizes lower cylinder cap 13 and cylinder body 11
Fixation.In the present embodiment, as shown in figure 1, a circle mounting hole can also be set correspondingly in positioning pedestal 31, use
The fastener f of lengthening matches somebody with somebody with the mounting hole (not marked in figure) of positioning pedestal 31, the mounting hole (not marked in figure) of lower cylinder cap 13
Close and realize stationary positioned pedestal 31, lower cylinder cap 13 and cylinder body 11 simultaneously.
Embodiment 2
The part-structure schematic diagram of the pipe expander of the embodiment of the present invention 2 is illustrated in figure 2, the pipe expander includes expander mould
Mechanism (not shown) and actuating unit 100 ', as shown in Fig. 2 actuating unit 100 ' includes oil cylinder 10 ' and piston rod 20 '.
Wherein, wherein, oil cylinder 10 ' includes cylinder body 11 ', the upper cylinder cover 12 ' for the upper end for closing cylinder body 11 ' and closing
The lower cylinder cap 13 ' of the bottom of cylinder body 11 '.
Piston rod 20 ' includes piston portion 21 ', the upward upper end link rod part for passing upper cylinder cover 12 ' in cylinder body 11 '
22 ' and the bottom 23 ' of lower cylinder cap 13 ' is passed downwards.Wherein, upper end link rod part 22 ' is connected with expander mold mechanism, so as to living
Stopper rod 20 ' drives expander mold movement by upper end link rod part 22 '.
In example 2, the direction of motion of piston portion 21 ' is to be moved towards upper cylinder cover 12 ', i.e. the pipe expander of the present embodiment
Piston rod 20 ' be jacking type piston rod, its direction of motion in cylinder body 11 ' is upward.In the present embodiment, it is living
Piston part 21 ' can originate from the inwall of lower cylinder cap 13 ', motion upwards.
The bottom 23 ' of piston rod 20 ' is provided with the second spacing dress that the bottom 23 ' of limitation piston rod 20 ' is moved upwards
Put 30 '.
Second stopping means 30 ' includes the second adjusting screw rod 32 ', the second locking nut 33 ' and limiting stand 34 '.
The screwed hole that collecting second adjusting screw rod 32 ' is provided with the bottom 23 ' of piston rod 20 ' (is not marked in figure
Note), the second adjusting screw rod 32 ' coordinate with screwed hole so as to realize the second adjusting screw rod 32 ' threadingly hole relative to piston rod 20 '
Move up and down.
Second locking nut 33 ' is removable installed in the bottom 23 ' of piston rod 20 ' so that the second adjusting screw rod 32 '
It is relatively fixed with the bottom 23 ' of piston rod 20 '.
Limiting stand 34 ' is located at the outside of the bottom 23 ' of piston rod 20 ', and is set with being relatively fixed with piston rod 20 '.
When piston rod 20 ' is in spacing state, limiting stand 34 ' is held in lower cylinder cap 13 ' upwards.
In actual mechanical process, first determine piston rod 20 ' move upwards distance (also determined that limiting stand 34 ' with
The distance between lower cylinder cap 13 ', that is, the position of limiting stand 34 ' is determined), tune the second adjusting screw rod 32, the second regulation
Screwed hole of the screw rod 32 ' along the bottom 23 ' of piston rod 20 ' moves up and down, until limiting stand 34 ' is moved to identified position
Put, it is then with the second locking nut 33 ' that the second adjusting screw rod 32 ' is fixed, when piston rod 20 ' moves upwards, limiting stand 34 '
Also motion upwards therewith, when limiting stand 34 ' is held in lower cylinder cap 13 ' upwards, piston rod 20 ' is in spacing state, Wu Fazai
Continue up, so that it is determined that the terminal that piston rod 20 ' moves upwards.
The pipe expander of embodiment 2, machinery positioning is realized using simple mechanical structure, positioned with the photoelectricity of prior art
Compare, can more accurately determine the upward exercise end of piston rod 20, realize the positioning of piston rod 20, so as to reliably hold
Expander size, especially essence expand size, and fluctuating error scope is in 0.05mm.
Preferably, in the present embodiment, limiting stand 34 ' is located at the top of the second locking nut 33 ' and is supported on the second lock
Tight nut 33 '.The lower surface of limiting stand 34 ' can be overlapped on the second locking nut 33 ', for example, as shown in Fig. 2 limiting stand
34 ' lower surface can be chimeric with the second locking nut 33 ', so as to ensure the upper surface keep level state of limiting stand 34 '.
Preferably, in the present embodiment, limiting stand 34 ' can surround the setting of bottom 23 ' of piston rod 20 '.Certainly,
Several limiting stands 34 ' can be symmetrically arranged in the periphery of the bottom 23 ' of piston rod 20 '.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included in the scope of the protection.
Claims (7)
1. a kind of pipe expander, it includes expander mold mechanism and actuating unit,
The actuating unit includes：
Oil cylinder, it includes cylinder body, the upper cylinder cover of upper end of the closing cylinder body and the bottom of the closing cylinder body
Lower cylinder cap；With,
Piston rod, it includes piston portion in the cylinder body, upper end pass the upper cylinder cover upper end link rod part and under
End passes the bottom of the lower cylinder cap；The upper end link rod part is connected with the expander mold mechanism；
It is characterized in that：
The direction of motion of the piston portion is to be moved towards the lower cylinder cap；
The outer wall of the lower cylinder cap, which is provided with, limits the first stopping means that the bottom of the piston rod moves downward.
2. pipe expander as claimed in claim 1, it is characterised in that：
First stopping means includes：
Positioning pedestal, it is fixedly installed on the outer wall of the lower cylinder cap, and with the hollow of the collecting piston-rod lower end portion
Cylinder portion；
First adjusting screw rod, it is located at the bottom of the hollow cylinder, and with the inner thread of the hollow cylinder coordinate from
And realize inwall of first adjusting screw rod along the hollow cylinder and move up and down；With
First locking nut, it is removable installed in the bottom of the hollow cylinder so that first adjusting screw rod with
The hollow cylinder is relatively fixed；
When the piston rod is in spacing state, the bottom of the piston rod is held in downwards first adjusting screw rod.
3. pipe expander as claimed in claim 2, it is characterised in that：
The pipe expander includes the fixed positioning pedestal and the lower cylinder cap and fixes the lower cylinder cap and the oil cylinder simultaneously
The fastener of body.
4. a kind of pipe expander, it includes expander mold mechanism and actuating unit,
The actuating unit includes：
Oil cylinder, it includes cylinder body, the upper cylinder cover of upper end of the closing cylinder body and the bottom of the closing cylinder body
Lower cylinder cap；With,
Piston rod, it includes piston portion in the cylinder body, upper end pass the upper cylinder cover upper end link rod part and under
End passes the bottom of the lower cylinder cap；The upper end link rod part is connected with the expander mold mechanism；
It is characterized in that：
The direction of motion of the piston portion is to be moved towards the upper cylinder cover；
The bottom of the piston rod, which is provided with, limits the second stopping means that the bottom of the piston rod is moved upwards.
5. pipe expander as claimed in claim 4, it is characterised in that：
Second stopping means includes the second adjusting screw rod, the second locking nut and limiting stand；
The screwed hole for housing second adjusting screw rod, second adjusting screw rod and institute are provided with the bottom of the piston rod
Screwed hole is stated to coordinate so as to realize that second adjusting screw rod moves up and down along the screwed hole；
Second locking nut its be removable installed in the bottom of the piston rod so that second adjusting screw rod with
The bottom of the piston rod is relatively fixed；
The limiting stand is located at the outside in the piston-rod lower end portion, and is set with being relatively fixed with the piston rod；
When the piston rod is in spacing state, the limiting stand is held in the lower cylinder cap upwards.
6. pipe expander as claimed in claim 5, it is characterised in that：
The limiting stand is located at the top of second locking nut and is supported on second locking nut.
7. pipe expander as claimed in claim 5, it is characterised in that：
Periphery wall of the limiting stand around the piston-rod lower end portion is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697997.XA CN107755553A (en) | 2016-08-22 | 2016-08-22 | A kind of pipe expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697997.XA CN107755553A (en) | 2016-08-22 | 2016-08-22 | A kind of pipe expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107755553A true CN107755553A (en) | 2018-03-06 |
Family
ID=61262246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610697997.XA Pending CN107755553A (en) | 2016-08-22 | 2016-08-22 | A kind of pipe expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107755553A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0374407A2 (en) * | 1988-12-17 | 1990-06-27 | Emitec Gesellschaft für Emissionstechnologie mbH | Assembling method |
| CN1371802A (en) * | 2001-02-28 | 2002-10-02 | 朱锦忠 | Hydraulic press for powder formation |
| CN101825125A (en) * | 2009-03-06 | 2010-09-08 | 张家港和升数控机床制造有限公司 | Oil cylinder with adjustable piston stroke |
| CN201618811U (en) * | 2009-12-23 | 2010-11-03 | 钢铁研究总院 | Pipe expanding device |
| CN202667468U (en) * | 2012-06-13 | 2013-01-16 | 上海天阳钢管有限公司 | Hydraulic steel tube expanding machine |
| CN203725788U (en) * | 2014-01-21 | 2014-07-23 | 云南琥正机械有限公司 | Novel lathe tailstock |
| CN205996045U (en) * | 2016-08-22 | 2017-03-08 | 南昌海立电器有限公司 | A kind of pipe expander |
-
2016
- 2016-08-22 CN CN201610697997.XA patent/CN107755553A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0374407A2 (en) * | 1988-12-17 | 1990-06-27 | Emitec Gesellschaft für Emissionstechnologie mbH | Assembling method |
| CN1371802A (en) * | 2001-02-28 | 2002-10-02 | 朱锦忠 | Hydraulic press for powder formation |
| CN101825125A (en) * | 2009-03-06 | 2010-09-08 | 张家港和升数控机床制造有限公司 | Oil cylinder with adjustable piston stroke |
| CN201618811U (en) * | 2009-12-23 | 2010-11-03 | 钢铁研究总院 | Pipe expanding device |
| CN202667468U (en) * | 2012-06-13 | 2013-01-16 | 上海天阳钢管有限公司 | Hydraulic steel tube expanding machine |
| CN203725788U (en) * | 2014-01-21 | 2014-07-23 | 云南琥正机械有限公司 | Novel lathe tailstock |
| CN205996045U (en) * | 2016-08-22 | 2017-03-08 | 南昌海立电器有限公司 | A kind of pipe expander |
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Application publication date: 20180306 |
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